MouseCode - Mouse code for the MacroRat

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Mouse code for the MacroRat

Dependencies: ITG3200 QEI

mbed-dev/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_sai.c@46:b156ef445742, 2017-06-03 (annotated)

Committer:: sahilmgandhi
Date:: Sat Jun 03 00:22:44 2017 +0000
Revision:: 46:b156ef445742
Parent:: 18:6a4db94011d3

Final code for internal battlebot competition.

Who changed what in which revision?

User	Revision	Line number	New contents of line
sahilmgandhi	18:6a4db94011d3	1	/**
sahilmgandhi	18:6a4db94011d3	2	******************************************************************************
sahilmgandhi	18:6a4db94011d3	3	* @file stm32f4xx_hal_sai.c
sahilmgandhi	18:6a4db94011d3	4	* @author MCD Application Team
sahilmgandhi	18:6a4db94011d3	5	* @version V1.5.0
sahilmgandhi	18:6a4db94011d3	6	* @date 06-May-2016
sahilmgandhi	18:6a4db94011d3	7	* @brief SAI HAL module driver.
sahilmgandhi	18:6a4db94011d3	8	* This file provides firmware functions to manage the following
sahilmgandhi	18:6a4db94011d3	9	* functionalities of the Serial Audio Interface (SAI) peripheral:
sahilmgandhi	18:6a4db94011d3	10	* + Initialization/de-initialization functions
sahilmgandhi	18:6a4db94011d3	11	* + I/O operation functions
sahilmgandhi	18:6a4db94011d3	12	* + Peripheral Control functions
sahilmgandhi	18:6a4db94011d3	13	* + Peripheral State functions
sahilmgandhi	18:6a4db94011d3	14	*
sahilmgandhi	18:6a4db94011d3	15	@verbatim
sahilmgandhi	18:6a4db94011d3	16	==============================================================================
sahilmgandhi	18:6a4db94011d3	17	##### How to use this driver #####
sahilmgandhi	18:6a4db94011d3	18	==============================================================================
sahilmgandhi	18:6a4db94011d3	19
sahilmgandhi	18:6a4db94011d3	20	[..]
sahilmgandhi	18:6a4db94011d3	21	The SAI HAL driver can be used as follows:
sahilmgandhi	18:6a4db94011d3	22
sahilmgandhi	18:6a4db94011d3	23	(#) Declare a SAI_HandleTypeDef handle structure (eg. SAI_HandleTypeDef hsai).
sahilmgandhi	18:6a4db94011d3	24	(#) Initialize the SAI low level resources by implementing the HAL_SAI_MspInit() API:
sahilmgandhi	18:6a4db94011d3	25	(##) Enable the SAI interface clock.
sahilmgandhi	18:6a4db94011d3	26	(##) SAI pins configuration:
sahilmgandhi	18:6a4db94011d3	27	(+++) Enable the clock for the SAI GPIOs.
sahilmgandhi	18:6a4db94011d3	28	(+++) Configure these SAI pins as alternate function pull-up.
sahilmgandhi	18:6a4db94011d3	29	(##) NVIC configuration if you need to use interrupt process (HAL_SAI_Transmit_IT()
sahilmgandhi	18:6a4db94011d3	30	and HAL_SAI_Receive_IT() APIs):
sahilmgandhi	18:6a4db94011d3	31	(+++) Configure the SAI interrupt priority.
sahilmgandhi	18:6a4db94011d3	32	(+++) Enable the NVIC SAI IRQ handle.
sahilmgandhi	18:6a4db94011d3	33
sahilmgandhi	18:6a4db94011d3	34	(##) DMA Configuration if you need to use DMA process (HAL_SAI_Transmit_DMA()
sahilmgandhi	18:6a4db94011d3	35	and HAL_SAI_Receive_DMA() APIs):
sahilmgandhi	18:6a4db94011d3	36	(+++) Declare a DMA handle structure for the Tx/Rx stream.
sahilmgandhi	18:6a4db94011d3	37	(+++) Enable the DMAx interface clock.
sahilmgandhi	18:6a4db94011d3	38	(+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
sahilmgandhi	18:6a4db94011d3	39	(+++) Configure the DMA Tx/Rx Stream.
sahilmgandhi	18:6a4db94011d3	40	(+++) Associate the initialized DMA handle to the SAI DMA Tx/Rx handle.
sahilmgandhi	18:6a4db94011d3	41	(+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the
sahilmgandhi	18:6a4db94011d3	42	DMA Tx/Rx Stream.
sahilmgandhi	18:6a4db94011d3	43
sahilmgandhi	18:6a4db94011d3	44	(#) The initialization can be done by two ways
sahilmgandhi	18:6a4db94011d3	45	(##) Expert mode : Initialize the structures Init, FrameInit and SlotInit and call HAL_SAI_Init().
sahilmgandhi	18:6a4db94011d3	46	(##) Simplified mode : Initialize the high part of Init Structure and call HAL_SAI_InitProtocol().
sahilmgandhi	18:6a4db94011d3	47
sahilmgandhi	18:6a4db94011d3	48	[..]
sahilmgandhi	18:6a4db94011d3	49	(@) The specific SAI interrupts (FIFO request and Overrun underrun interrupt)
sahilmgandhi	18:6a4db94011d3	50	will be managed using the macros __HAL_SAI_ENABLE_IT() and __HAL_SAI_DISABLE_IT()
sahilmgandhi	18:6a4db94011d3	51	inside the transmit and receive process.
sahilmgandhi	18:6a4db94011d3	52
sahilmgandhi	18:6a4db94011d3	53	[..]
sahilmgandhi	18:6a4db94011d3	54	(@) SAI Clock Source configuration is managed differently depending on the selected
sahilmgandhi	18:6a4db94011d3	55	STM32F4 devices :
sahilmgandhi	18:6a4db94011d3	56	(+@) For STM32F446xx devices, the configuration is managed through RCCEx_PeriphCLKConfig()
sahilmgandhi	18:6a4db94011d3	57	function in the HAL RCC drivers
sahilmgandhi	18:6a4db94011d3	58	(+@) For STM32F439xx/STM32F437xx/STM32F429xx/STM32F427xx devices, the configuration
sahilmgandhi	18:6a4db94011d3	59	is managed within HAL SAI drivers through HAL_SAI_Init() function using
sahilmgandhi	18:6a4db94011d3	60	ClockSource field of SAI_InitTypeDef structure.
sahilmgandhi	18:6a4db94011d3	61	[..]
sahilmgandhi	18:6a4db94011d3	62	(@) Make sure that either:
sahilmgandhi	18:6a4db94011d3	63	(+@) I2S PLL is configured or
sahilmgandhi	18:6a4db94011d3	64	(+@) SAI PLL is configured or
sahilmgandhi	18:6a4db94011d3	65	(+@) External clock source is configured after setting correctly
sahilmgandhi	18:6a4db94011d3	66	the define constant EXTERNAL_CLOCK_VALUE in the stm32f4xx_hal_conf.h file.
sahilmgandhi	18:6a4db94011d3	67	[..]
sahilmgandhi	18:6a4db94011d3	68	(@) In master Tx mode: enabling the audio block immediately generates the bit clock
sahilmgandhi	18:6a4db94011d3	69	for the external slaves even if there is no data in the FIFO, However FS signal
sahilmgandhi	18:6a4db94011d3	70	generation is conditioned by the presence of data in the FIFO.
sahilmgandhi	18:6a4db94011d3	71
sahilmgandhi	18:6a4db94011d3	72	[..]
sahilmgandhi	18:6a4db94011d3	73	(@) In master Rx mode: enabling the audio block immediately generates the bit clock
sahilmgandhi	18:6a4db94011d3	74	and FS signal for the external slaves.
sahilmgandhi	18:6a4db94011d3	75
sahilmgandhi	18:6a4db94011d3	76	[..]
sahilmgandhi	18:6a4db94011d3	77	(@) It is mandatory to respect the following conditions in order to avoid bad SAI behavior:
sahilmgandhi	18:6a4db94011d3	78	(+@) First bit Offset <= (SLOT size - Data size)
sahilmgandhi	18:6a4db94011d3	79	(+@) Data size <= SLOT size
sahilmgandhi	18:6a4db94011d3	80	(+@) Number of SLOT x SLOT size = Frame length
sahilmgandhi	18:6a4db94011d3	81	(+@) The number of slots should be even when SAI_FS_CHANNEL_IDENTIFICATION is selected.
sahilmgandhi	18:6a4db94011d3	82
sahilmgandhi	18:6a4db94011d3	83	[..]
sahilmgandhi	18:6a4db94011d3	84	Three operation modes are available within this driver :
sahilmgandhi	18:6a4db94011d3	85
sahilmgandhi	18:6a4db94011d3	86	* Polling mode IO operation *
sahilmgandhi	18:6a4db94011d3	87	=================================
sahilmgandhi	18:6a4db94011d3	88	[..]
sahilmgandhi	18:6a4db94011d3	89	(+) Send an amount of data in blocking mode using HAL_SAI_Transmit()
sahilmgandhi	18:6a4db94011d3	90	(+) Receive an amount of data in blocking mode using HAL_SAI_Receive()
sahilmgandhi	18:6a4db94011d3	91
sahilmgandhi	18:6a4db94011d3	92	* Interrupt mode IO operation *
sahilmgandhi	18:6a4db94011d3	93	===================================
sahilmgandhi	18:6a4db94011d3	94	[..]
sahilmgandhi	18:6a4db94011d3	95	(+) Send an amount of data in non-blocking mode using HAL_SAI_Transmit_IT()
sahilmgandhi	18:6a4db94011d3	96	(+) At transmission end of transfer HAL_SAI_TxCpltCallback() is executed and user can
sahilmgandhi	18:6a4db94011d3	97	add his own code by customization of function pointer HAL_SAI_TxCpltCallback()
sahilmgandhi	18:6a4db94011d3	98	(+) Receive an amount of data in non-blocking mode using HAL_SAI_Receive_IT()
sahilmgandhi	18:6a4db94011d3	99	(+) At reception end of transfer HAL_SAI_RxCpltCallback() is executed and user can
sahilmgandhi	18:6a4db94011d3	100	add his own code by customization of function pointer HAL_SAI_RxCpltCallback()
sahilmgandhi	18:6a4db94011d3	101	(+) In case of flag error, HAL_SAI_ErrorCallback() function is executed and user can
sahilmgandhi	18:6a4db94011d3	102	add his own code by customization of function pointer HAL_SAI_ErrorCallback()
sahilmgandhi	18:6a4db94011d3	103
sahilmgandhi	18:6a4db94011d3	104	* DMA mode IO operation *
sahilmgandhi	18:6a4db94011d3	105	=============================
sahilmgandhi	18:6a4db94011d3	106	[..]
sahilmgandhi	18:6a4db94011d3	107	(+) Send an amount of data in non-blocking mode (DMA) using HAL_SAI_Transmit_DMA()
sahilmgandhi	18:6a4db94011d3	108	(+) At transmission end of transfer HAL_SAI_TxCpltCallback() is executed and user can
sahilmgandhi	18:6a4db94011d3	109	add his own code by customization of function pointer HAL_SAI_TxCpltCallback()
sahilmgandhi	18:6a4db94011d3	110	(+) Receive an amount of data in non-blocking mode (DMA) using HAL_SAI_Receive_DMA()
sahilmgandhi	18:6a4db94011d3	111	(+) At reception end of transfer HAL_SAI_RxCpltCallback() is executed and user can
sahilmgandhi	18:6a4db94011d3	112	add his own code by customization of function pointer HAL_SAI_RxCpltCallback()
sahilmgandhi	18:6a4db94011d3	113	(+) In case of flag error, HAL_SAI_ErrorCallback() function is executed and user can
sahilmgandhi	18:6a4db94011d3	114	add his own code by customization of function pointer HAL_SAI_ErrorCallback()
sahilmgandhi	18:6a4db94011d3	115	(+) Pause the DMA Transfer using HAL_SAI_DMAPause()
sahilmgandhi	18:6a4db94011d3	116	(+) Resume the DMA Transfer using HAL_SAI_DMAResume()
sahilmgandhi	18:6a4db94011d3	117	(+) Stop the DMA Transfer using HAL_SAI_DMAStop()
sahilmgandhi	18:6a4db94011d3	118
sahilmgandhi	18:6a4db94011d3	119	* SAI HAL driver additional function list *
sahilmgandhi	18:6a4db94011d3	120	===============================================
sahilmgandhi	18:6a4db94011d3	121	[..]
sahilmgandhi	18:6a4db94011d3	122	Below the list the others API available SAI HAL driver :
sahilmgandhi	18:6a4db94011d3	123
sahilmgandhi	18:6a4db94011d3	124	(+) HAL_SAI_EnableTxMuteMode(): Enable the mute in tx mode
sahilmgandhi	18:6a4db94011d3	125	(+) HAL_SAI_DisableTxMuteMode(): Disable the mute in tx mode
sahilmgandhi	18:6a4db94011d3	126	(+) HAL_SAI_EnableRxMuteMode(): Enable the mute in Rx mode
sahilmgandhi	18:6a4db94011d3	127	(+) HAL_SAI_DisableRxMuteMode(): Disable the mute in Rx mode
sahilmgandhi	18:6a4db94011d3	128	(+) HAL_SAI_FlushRxFifo(): Flush the rx fifo.
sahilmgandhi	18:6a4db94011d3	129	(+) HAL_SAI_Abort(): Abort the current transfer
sahilmgandhi	18:6a4db94011d3	130
sahilmgandhi	18:6a4db94011d3	131	* SAI HAL driver macros list *
sahilmgandhi	18:6a4db94011d3	132	==================================
sahilmgandhi	18:6a4db94011d3	133	[..]
sahilmgandhi	18:6a4db94011d3	134	Below the list of most used macros in SAI HAL driver :
sahilmgandhi	18:6a4db94011d3	135
sahilmgandhi	18:6a4db94011d3	136	(+) __HAL_SAI_ENABLE(): Enable the SAI peripheral
sahilmgandhi	18:6a4db94011d3	137	(+) __HAL_SAI_DISABLE(): Disable the SAI peripheral
sahilmgandhi	18:6a4db94011d3	138	(+) __HAL_SAI_ENABLE_IT(): Enable the specified SAI interrupts
sahilmgandhi	18:6a4db94011d3	139	(+) __HAL_SAI_DISABLE_IT(): Disable the specified SAI interrupts
sahilmgandhi	18:6a4db94011d3	140	(+) __HAL_SAI_GET_IT_SOURCE(): Check if the specified SAI interrupt source is
sahilmgandhi	18:6a4db94011d3	141	enabled or disabled
sahilmgandhi	18:6a4db94011d3	142	(+) __HAL_SAI_GET_FLAG(): Check whether the specified SAI flag is set or not
sahilmgandhi	18:6a4db94011d3	143
sahilmgandhi	18:6a4db94011d3	144	@endverbatim
sahilmgandhi	18:6a4db94011d3	145	******************************************************************************
sahilmgandhi	18:6a4db94011d3	146	* @attention
sahilmgandhi	18:6a4db94011d3	147	*
sahilmgandhi	18:6a4db94011d3	148	* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
sahilmgandhi	18:6a4db94011d3	149	*
sahilmgandhi	18:6a4db94011d3	150	* Redistribution and use in source and binary forms, with or without modification,
sahilmgandhi	18:6a4db94011d3	151	* are permitted provided that the following conditions are met:
sahilmgandhi	18:6a4db94011d3	152	* 1. Redistributions of source code must retain the above copyright notice,
sahilmgandhi	18:6a4db94011d3	153	* this list of conditions and the following disclaimer.
sahilmgandhi	18:6a4db94011d3	154	* 2. Redistributions in binary form must reproduce the above copyright notice,
sahilmgandhi	18:6a4db94011d3	155	* this list of conditions and the following disclaimer in the documentation
sahilmgandhi	18:6a4db94011d3	156	* and/or other materials provided with the distribution.
sahilmgandhi	18:6a4db94011d3	157	* 3. Neither the name of STMicroelectronics nor the names of its contributors
sahilmgandhi	18:6a4db94011d3	158	* may be used to endorse or promote products derived from this software
sahilmgandhi	18:6a4db94011d3	159	* without specific prior written permission.
sahilmgandhi	18:6a4db94011d3	160	*
sahilmgandhi	18:6a4db94011d3	161	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
sahilmgandhi	18:6a4db94011d3	162	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sahilmgandhi	18:6a4db94011d3	163	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
sahilmgandhi	18:6a4db94011d3	164	* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
sahilmgandhi	18:6a4db94011d3	165	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sahilmgandhi	18:6a4db94011d3	166	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
sahilmgandhi	18:6a4db94011d3	167	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
sahilmgandhi	18:6a4db94011d3	168	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
sahilmgandhi	18:6a4db94011d3	169	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
sahilmgandhi	18:6a4db94011d3	170	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
sahilmgandhi	18:6a4db94011d3	171	*
sahilmgandhi	18:6a4db94011d3	172	******************************************************************************
sahilmgandhi	18:6a4db94011d3	173	*/
sahilmgandhi	18:6a4db94011d3	174
sahilmgandhi	18:6a4db94011d3	175	/* Includes ------------------------------------------------------------------*/
sahilmgandhi	18:6a4db94011d3	176	#include "stm32f4xx_hal.h"
sahilmgandhi	18:6a4db94011d3	177
sahilmgandhi	18:6a4db94011d3	178	/** @addtogroup STM32F4xx_HAL_Driver
sahilmgandhi	18:6a4db94011d3	179	* @{
sahilmgandhi	18:6a4db94011d3	180	*/
sahilmgandhi	18:6a4db94011d3	181
sahilmgandhi	18:6a4db94011d3	182	/** @defgroup SAI SAI
sahilmgandhi	18:6a4db94011d3	183	* @brief SAI HAL module driver
sahilmgandhi	18:6a4db94011d3	184	* @{
sahilmgandhi	18:6a4db94011d3	185	*/
sahilmgandhi	18:6a4db94011d3	186
sahilmgandhi	18:6a4db94011d3	187	#ifdef HAL_SAI_MODULE_ENABLED
sahilmgandhi	18:6a4db94011d3	188
sahilmgandhi	18:6a4db94011d3	189	#if defined(STM32F427xx) \|\| defined(STM32F437xx) \|\| defined(STM32F429xx) \|\| defined(STM32F439xx) \|\|\
sahilmgandhi	18:6a4db94011d3	190	defined(STM32F446xx) \|\| defined(STM32F469xx) \|\| defined(STM32F479xx)
sahilmgandhi	18:6a4db94011d3	191
sahilmgandhi	18:6a4db94011d3	192	/** @defgroup SAI_Private_Typedefs SAI Private Typedefs
sahilmgandhi	18:6a4db94011d3	193	* @{
sahilmgandhi	18:6a4db94011d3	194	*/
sahilmgandhi	18:6a4db94011d3	195	typedef enum {
sahilmgandhi	18:6a4db94011d3	196	SAI_MODE_DMA,
sahilmgandhi	18:6a4db94011d3	197	SAI_MODE_IT
sahilmgandhi	18:6a4db94011d3	198	}SAI_ModeTypedef;
sahilmgandhi	18:6a4db94011d3	199	/**
sahilmgandhi	18:6a4db94011d3	200	* @}
sahilmgandhi	18:6a4db94011d3	201	*/
sahilmgandhi	18:6a4db94011d3	202
sahilmgandhi	18:6a4db94011d3	203	/* Private define ------------------------------------------------------------*/
sahilmgandhi	18:6a4db94011d3	204
sahilmgandhi	18:6a4db94011d3	205	/** @defgroup SAI_Private_Constants SAI Private Constants
sahilmgandhi	18:6a4db94011d3	206	* @{
sahilmgandhi	18:6a4db94011d3	207	*/
sahilmgandhi	18:6a4db94011d3	208	#define SAI_FIFO_SIZE 8U
sahilmgandhi	18:6a4db94011d3	209	#define SAI_DEFAULT_TIMEOUT 4U /* 4ms */
sahilmgandhi	18:6a4db94011d3	210	#define SAI_xCR2_MUTECNT_OFFSET POSITION_VAL(SAI_xCR2_MUTECNT)
sahilmgandhi	18:6a4db94011d3	211	/**
sahilmgandhi	18:6a4db94011d3	212	* @}
sahilmgandhi	18:6a4db94011d3	213	*/
sahilmgandhi	18:6a4db94011d3	214
sahilmgandhi	18:6a4db94011d3	215	/* Private macro -------------------------------------------------------------*/
sahilmgandhi	18:6a4db94011d3	216	/* Private variables ---------------------------------------------------------*/
sahilmgandhi	18:6a4db94011d3	217	/* Private function prototypes -----------------------------------------------*/
sahilmgandhi	18:6a4db94011d3	218
sahilmgandhi	18:6a4db94011d3	219	/** @defgroup SAI_Private_Functions SAI Private Functions
sahilmgandhi	18:6a4db94011d3	220	* @{
sahilmgandhi	18:6a4db94011d3	221	*/
sahilmgandhi	18:6a4db94011d3	222	static void SAI_FillFifo(SAI_HandleTypeDef *hsai);
sahilmgandhi	18:6a4db94011d3	223	static uint32_t SAI_InterruptFlag(SAI_HandleTypeDef *hsai, uint32_t mode);
sahilmgandhi	18:6a4db94011d3	224	static HAL_StatusTypeDef SAI_InitI2S(SAI_HandleTypeDef *hsai, uint32_t protocol, uint32_t datasize, uint32_t nbslot);
sahilmgandhi	18:6a4db94011d3	225	static HAL_StatusTypeDef SAI_InitPCM(SAI_HandleTypeDef *hsai, uint32_t protocol, uint32_t datasize, uint32_t nbslot);
sahilmgandhi	18:6a4db94011d3	226
sahilmgandhi	18:6a4db94011d3	227	static HAL_StatusTypeDef SAI_Disable(SAI_HandleTypeDef *hsai);
sahilmgandhi	18:6a4db94011d3	228	static void SAI_Transmit_IT8Bit(SAI_HandleTypeDef *hsai);
sahilmgandhi	18:6a4db94011d3	229	static void SAI_Transmit_IT16Bit(SAI_HandleTypeDef *hsai);
sahilmgandhi	18:6a4db94011d3	230	static void SAI_Transmit_IT32Bit(SAI_HandleTypeDef *hsai);
sahilmgandhi	18:6a4db94011d3	231	static void SAI_Receive_IT8Bit(SAI_HandleTypeDef *hsai);
sahilmgandhi	18:6a4db94011d3	232	static void SAI_Receive_IT16Bit(SAI_HandleTypeDef *hsai);
sahilmgandhi	18:6a4db94011d3	233	static void SAI_Receive_IT32Bit(SAI_HandleTypeDef *hsai);
sahilmgandhi	18:6a4db94011d3	234
sahilmgandhi	18:6a4db94011d3	235	static void SAI_DMATxCplt(DMA_HandleTypeDef *hdma);
sahilmgandhi	18:6a4db94011d3	236	static void SAI_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
sahilmgandhi	18:6a4db94011d3	237	static void SAI_DMARxCplt(DMA_HandleTypeDef *hdma);
sahilmgandhi	18:6a4db94011d3	238	static void SAI_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
sahilmgandhi	18:6a4db94011d3	239	static void SAI_DMAError(DMA_HandleTypeDef *hdma);
sahilmgandhi	18:6a4db94011d3	240	static void SAI_DMAAbort(DMA_HandleTypeDef *hdma);
sahilmgandhi	18:6a4db94011d3	241	/**
sahilmgandhi	18:6a4db94011d3	242	* @}
sahilmgandhi	18:6a4db94011d3	243	*/
sahilmgandhi	18:6a4db94011d3	244
sahilmgandhi	18:6a4db94011d3	245	/* Exported functions ---------------------------------------------------------*/
sahilmgandhi	18:6a4db94011d3	246
sahilmgandhi	18:6a4db94011d3	247	/** @defgroup SAI_Exported_Functions SAI Exported Functions
sahilmgandhi	18:6a4db94011d3	248	* @{
sahilmgandhi	18:6a4db94011d3	249	*/
sahilmgandhi	18:6a4db94011d3	250
sahilmgandhi	18:6a4db94011d3	251	/** @defgroup SAI_Exported_Functions_Group1 Initialization and de-initialization functions
sahilmgandhi	18:6a4db94011d3	252	* @brief Initialization and Configuration functions
sahilmgandhi	18:6a4db94011d3	253	*
sahilmgandhi	18:6a4db94011d3	254	@verbatim
sahilmgandhi	18:6a4db94011d3	255	===============================================================================
sahilmgandhi	18:6a4db94011d3	256	##### Initialization and de-initialization functions #####
sahilmgandhi	18:6a4db94011d3	257	===============================================================================
sahilmgandhi	18:6a4db94011d3	258	[..] This subsection provides a set of functions allowing to initialize and
sahilmgandhi	18:6a4db94011d3	259	de-initialize the SAIx peripheral:
sahilmgandhi	18:6a4db94011d3	260
sahilmgandhi	18:6a4db94011d3	261	(+) User must implement HAL_SAI_MspInit() function in which he configures
sahilmgandhi	18:6a4db94011d3	262	all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC ).
sahilmgandhi	18:6a4db94011d3	263
sahilmgandhi	18:6a4db94011d3	264	(+) Call the function HAL_SAI_Init() to configure the selected device with
sahilmgandhi	18:6a4db94011d3	265	the selected configuration:
sahilmgandhi	18:6a4db94011d3	266	(++) Mode (Master/slave TX/RX)
sahilmgandhi	18:6a4db94011d3	267	(++) Protocol
sahilmgandhi	18:6a4db94011d3	268	(++) Data Size
sahilmgandhi	18:6a4db94011d3	269	(++) MCLK Output
sahilmgandhi	18:6a4db94011d3	270	(++) Audio frequency
sahilmgandhi	18:6a4db94011d3	271	(++) FIFO Threshold
sahilmgandhi	18:6a4db94011d3	272	(++) Frame Config
sahilmgandhi	18:6a4db94011d3	273	(++) Slot Config
sahilmgandhi	18:6a4db94011d3	274
sahilmgandhi	18:6a4db94011d3	275	(+) Call the function HAL_SAI_DeInit() to restore the default configuration
sahilmgandhi	18:6a4db94011d3	276	of the selected SAI peripheral.
sahilmgandhi	18:6a4db94011d3	277
sahilmgandhi	18:6a4db94011d3	278	@endverbatim
sahilmgandhi	18:6a4db94011d3	279	* @{
sahilmgandhi	18:6a4db94011d3	280	*/
sahilmgandhi	18:6a4db94011d3	281
sahilmgandhi	18:6a4db94011d3	282	/**
sahilmgandhi	18:6a4db94011d3	283	* @brief Initialize the structure FrameInit, SlotInit and the low part of
sahilmgandhi	18:6a4db94011d3	284	* Init according to the specified parameters and call the function
sahilmgandhi	18:6a4db94011d3	285	* HAL_SAI_Init to initialize the SAI block.
sahilmgandhi	18:6a4db94011d3	286	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	287	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	288	* @param protocol: one of the supported protocol @ref SAI_Protocol
sahilmgandhi	18:6a4db94011d3	289	* @param datasize: one of the supported datasize @ref SAI_Protocol_DataSize
sahilmgandhi	18:6a4db94011d3	290	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	291	* @param nbslot: Number of slot.
sahilmgandhi	18:6a4db94011d3	292	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	293	*/
sahilmgandhi	18:6a4db94011d3	294	HAL_StatusTypeDef HAL_SAI_InitProtocol(SAI_HandleTypeDef *hsai, uint32_t protocol, uint32_t datasize, uint32_t nbslot)
sahilmgandhi	18:6a4db94011d3	295	{
sahilmgandhi	18:6a4db94011d3	296	HAL_StatusTypeDef status = HAL_OK;
sahilmgandhi	18:6a4db94011d3	297
sahilmgandhi	18:6a4db94011d3	298	/* Check the parameters */
sahilmgandhi	18:6a4db94011d3	299	assert_param(IS_SAI_SUPPORTED_PROTOCOL(protocol));
sahilmgandhi	18:6a4db94011d3	300	assert_param(IS_SAI_PROTOCOL_DATASIZE(datasize));
sahilmgandhi	18:6a4db94011d3	301
sahilmgandhi	18:6a4db94011d3	302	switch(protocol)
sahilmgandhi	18:6a4db94011d3	303	{
sahilmgandhi	18:6a4db94011d3	304	case SAI_I2S_STANDARD :
sahilmgandhi	18:6a4db94011d3	305	case SAI_I2S_MSBJUSTIFIED :
sahilmgandhi	18:6a4db94011d3	306	case SAI_I2S_LSBJUSTIFIED :
sahilmgandhi	18:6a4db94011d3	307	status = SAI_InitI2S(hsai, protocol, datasize, nbslot);
sahilmgandhi	18:6a4db94011d3	308	break;
sahilmgandhi	18:6a4db94011d3	309	case SAI_PCM_LONG :
sahilmgandhi	18:6a4db94011d3	310	case SAI_PCM_SHORT :
sahilmgandhi	18:6a4db94011d3	311	status = SAI_InitPCM(hsai, protocol, datasize, nbslot);
sahilmgandhi	18:6a4db94011d3	312	break;
sahilmgandhi	18:6a4db94011d3	313	default :
sahilmgandhi	18:6a4db94011d3	314	status = HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	315	break;
sahilmgandhi	18:6a4db94011d3	316	}
sahilmgandhi	18:6a4db94011d3	317
sahilmgandhi	18:6a4db94011d3	318	if(status == HAL_OK)
sahilmgandhi	18:6a4db94011d3	319	{
sahilmgandhi	18:6a4db94011d3	320	status = HAL_SAI_Init(hsai);
sahilmgandhi	18:6a4db94011d3	321	}
sahilmgandhi	18:6a4db94011d3	322
sahilmgandhi	18:6a4db94011d3	323	return status;
sahilmgandhi	18:6a4db94011d3	324	}
sahilmgandhi	18:6a4db94011d3	325
sahilmgandhi	18:6a4db94011d3	326	/**
sahilmgandhi	18:6a4db94011d3	327	* @brief Initialize the SAI according to the specified parameters.
sahilmgandhi	18:6a4db94011d3	328	* in the SAI_InitTypeDef structure and initialize the associated handle.
sahilmgandhi	18:6a4db94011d3	329	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	330	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	331	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	332	*/
sahilmgandhi	18:6a4db94011d3	333	HAL_StatusTypeDef HAL_SAI_Init(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	334	{
sahilmgandhi	18:6a4db94011d3	335	uint32_t tmpregisterGCR = 0U;
sahilmgandhi	18:6a4db94011d3	336
sahilmgandhi	18:6a4db94011d3	337	/* This variable used to store the SAI_CK_x (value in Hz) */
sahilmgandhi	18:6a4db94011d3	338	uint32_t freq = 0U;
sahilmgandhi	18:6a4db94011d3	339
sahilmgandhi	18:6a4db94011d3	340	/* This variable is used to compute CKSTR bits of SAI CR1 according to
sahilmgandhi	18:6a4db94011d3	341	ClockStrobing and AudioMode fields */
sahilmgandhi	18:6a4db94011d3	342	uint32_t ckstr_bits = 0U;
sahilmgandhi	18:6a4db94011d3	343	uint32_t syncen_bits = 0U;
sahilmgandhi	18:6a4db94011d3	344
sahilmgandhi	18:6a4db94011d3	345	/* Check the SAI handle allocation */
sahilmgandhi	18:6a4db94011d3	346	if(hsai == NULL)
sahilmgandhi	18:6a4db94011d3	347	{
sahilmgandhi	18:6a4db94011d3	348	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	349	}
sahilmgandhi	18:6a4db94011d3	350
sahilmgandhi	18:6a4db94011d3	351	/* check the instance */
sahilmgandhi	18:6a4db94011d3	352	assert_param(IS_SAI_ALL_INSTANCE(hsai->Instance));
sahilmgandhi	18:6a4db94011d3	353
sahilmgandhi	18:6a4db94011d3	354	/* Check the SAI Block parameters */
sahilmgandhi	18:6a4db94011d3	355	assert_param(IS_SAI_AUDIO_FREQUENCY(hsai->Init.AudioFrequency));
sahilmgandhi	18:6a4db94011d3	356	assert_param(IS_SAI_BLOCK_PROTOCOL(hsai->Init.Protocol));
sahilmgandhi	18:6a4db94011d3	357	assert_param(IS_SAI_BLOCK_MODE(hsai->Init.AudioMode));
sahilmgandhi	18:6a4db94011d3	358	assert_param(IS_SAI_BLOCK_SYNCEXT(hsai->Init.SynchroExt));
sahilmgandhi	18:6a4db94011d3	359	assert_param(IS_SAI_BLOCK_DATASIZE(hsai->Init.DataSize));
sahilmgandhi	18:6a4db94011d3	360	assert_param(IS_SAI_BLOCK_FIRST_BIT(hsai->Init.FirstBit));
sahilmgandhi	18:6a4db94011d3	361	assert_param(IS_SAI_BLOCK_CLOCK_STROBING(hsai->Init.ClockStrobing));
sahilmgandhi	18:6a4db94011d3	362	assert_param(IS_SAI_BLOCK_SYNCHRO(hsai->Init.Synchro));
sahilmgandhi	18:6a4db94011d3	363	assert_param(IS_SAI_BLOCK_OUTPUT_DRIVE(hsai->Init.OutputDrive));
sahilmgandhi	18:6a4db94011d3	364	assert_param(IS_SAI_BLOCK_NODIVIDER(hsai->Init.NoDivider));
sahilmgandhi	18:6a4db94011d3	365	assert_param(IS_SAI_BLOCK_FIFO_THRESHOLD(hsai->Init.FIFOThreshold));
sahilmgandhi	18:6a4db94011d3	366	assert_param(IS_SAI_MONO_STEREO_MODE(hsai->Init.MonoStereoMode));
sahilmgandhi	18:6a4db94011d3	367	assert_param(IS_SAI_BLOCK_COMPANDING_MODE(hsai->Init.CompandingMode));
sahilmgandhi	18:6a4db94011d3	368	assert_param(IS_SAI_BLOCK_TRISTATE_MANAGEMENT(hsai->Init.TriState));
sahilmgandhi	18:6a4db94011d3	369
sahilmgandhi	18:6a4db94011d3	370	/* Check the SAI Block Frame parameters */
sahilmgandhi	18:6a4db94011d3	371	assert_param(IS_SAI_BLOCK_FRAME_LENGTH(hsai->FrameInit.FrameLength));
sahilmgandhi	18:6a4db94011d3	372	assert_param(IS_SAI_BLOCK_ACTIVE_FRAME(hsai->FrameInit.ActiveFrameLength));
sahilmgandhi	18:6a4db94011d3	373	assert_param(IS_SAI_BLOCK_FS_DEFINITION(hsai->FrameInit.FSDefinition));
sahilmgandhi	18:6a4db94011d3	374	assert_param(IS_SAI_BLOCK_FS_POLARITY(hsai->FrameInit.FSPolarity));
sahilmgandhi	18:6a4db94011d3	375	assert_param(IS_SAI_BLOCK_FS_OFFSET(hsai->FrameInit.FSOffset));
sahilmgandhi	18:6a4db94011d3	376
sahilmgandhi	18:6a4db94011d3	377	/* Check the SAI Block Slot parameters */
sahilmgandhi	18:6a4db94011d3	378	assert_param(IS_SAI_BLOCK_FIRSTBIT_OFFSET(hsai->SlotInit.FirstBitOffset));
sahilmgandhi	18:6a4db94011d3	379	assert_param(IS_SAI_BLOCK_SLOT_SIZE(hsai->SlotInit.SlotSize));
sahilmgandhi	18:6a4db94011d3	380	assert_param(IS_SAI_BLOCK_SLOT_NUMBER(hsai->SlotInit.SlotNumber));
sahilmgandhi	18:6a4db94011d3	381	assert_param(IS_SAI_SLOT_ACTIVE(hsai->SlotInit.SlotActive));
sahilmgandhi	18:6a4db94011d3	382
sahilmgandhi	18:6a4db94011d3	383	if(hsai->State == HAL_SAI_STATE_RESET)
sahilmgandhi	18:6a4db94011d3	384	{
sahilmgandhi	18:6a4db94011d3	385	/* Allocate lock resource and initialize it */
sahilmgandhi	18:6a4db94011d3	386	hsai->Lock = HAL_UNLOCKED;
sahilmgandhi	18:6a4db94011d3	387
sahilmgandhi	18:6a4db94011d3	388	/* Init the low level hardware : GPIO, CLOCK, NVIC and DMA */
sahilmgandhi	18:6a4db94011d3	389	HAL_SAI_MspInit(hsai);
sahilmgandhi	18:6a4db94011d3	390	}
sahilmgandhi	18:6a4db94011d3	391
sahilmgandhi	18:6a4db94011d3	392	hsai->State = HAL_SAI_STATE_BUSY;
sahilmgandhi	18:6a4db94011d3	393
sahilmgandhi	18:6a4db94011d3	394	/* Disable the selected SAI peripheral */
sahilmgandhi	18:6a4db94011d3	395	SAI_Disable(hsai);
sahilmgandhi	18:6a4db94011d3	396
sahilmgandhi	18:6a4db94011d3	397	/* SAI Block Synchro Configuration -----------------------------------------*/
sahilmgandhi	18:6a4db94011d3	398	SAI_BlockSynchroConfig(hsai);
sahilmgandhi	18:6a4db94011d3	399
sahilmgandhi	18:6a4db94011d3	400	/* Configure Master Clock using the following formula :
sahilmgandhi	18:6a4db94011d3	401	MCLK_x = SAI_CK_x / (MCKDIV[3:0] * 2) with MCLK_x = 256 * FS
sahilmgandhi	18:6a4db94011d3	402	FS = SAI_CK_x / (MCKDIV[3:0] * 2) * 256
sahilmgandhi	18:6a4db94011d3	403	MCKDIV[3:0] = SAI_CK_x / FS * 512 */
sahilmgandhi	18:6a4db94011d3	404	if(hsai->Init.AudioFrequency != SAI_AUDIO_FREQUENCY_MCKDIV)
sahilmgandhi	18:6a4db94011d3	405	{
sahilmgandhi	18:6a4db94011d3	406	/* Get SAI clock source based on Source clock selection from RCC */
sahilmgandhi	18:6a4db94011d3	407	freq = SAI_GetInputClock(hsai);
sahilmgandhi	18:6a4db94011d3	408
sahilmgandhi	18:6a4db94011d3	409	/* (saiclocksource x 10) to keep Significant digits */
sahilmgandhi	18:6a4db94011d3	410	tmpregisterGCR = (((freq * 10U) / ((hsai->Init.AudioFrequency) * 512U)));
sahilmgandhi	18:6a4db94011d3	411
sahilmgandhi	18:6a4db94011d3	412	hsai->Init.Mckdiv = tmpregisterGCR / 10U;
sahilmgandhi	18:6a4db94011d3	413
sahilmgandhi	18:6a4db94011d3	414	/* Round result to the nearest integer */
sahilmgandhi	18:6a4db94011d3	415	if((tmpregisterGCR % 10U) > 8U)
sahilmgandhi	18:6a4db94011d3	416	{
sahilmgandhi	18:6a4db94011d3	417	hsai->Init.Mckdiv+= 1U;
sahilmgandhi	18:6a4db94011d3	418	}
sahilmgandhi	18:6a4db94011d3	419	}
sahilmgandhi	18:6a4db94011d3	420
sahilmgandhi	18:6a4db94011d3	421	/* Compute CKSTR bits of SAI CR1 according to ClockStrobing and AudioMode */
sahilmgandhi	18:6a4db94011d3	422	if((hsai->Init.AudioMode == SAI_MODEMASTER_TX) \|\| (hsai->Init.AudioMode == SAI_MODESLAVE_TX))
sahilmgandhi	18:6a4db94011d3	423	{
sahilmgandhi	18:6a4db94011d3	424	ckstr_bits = (hsai->Init.ClockStrobing == SAI_CLOCKSTROBING_RISINGEDGE) ? 0U: SAI_xCR1_CKSTR;
sahilmgandhi	18:6a4db94011d3	425	}
sahilmgandhi	18:6a4db94011d3	426	else
sahilmgandhi	18:6a4db94011d3	427	{
sahilmgandhi	18:6a4db94011d3	428	ckstr_bits = (hsai->Init.ClockStrobing == SAI_CLOCKSTROBING_RISINGEDGE) ? SAI_xCR1_CKSTR: 0U;
sahilmgandhi	18:6a4db94011d3	429	}
sahilmgandhi	18:6a4db94011d3	430
sahilmgandhi	18:6a4db94011d3	431	/* SAI Block Configuration -------------------------------------------------*/
sahilmgandhi	18:6a4db94011d3	432	switch(hsai->Init.Synchro)
sahilmgandhi	18:6a4db94011d3	433	{
sahilmgandhi	18:6a4db94011d3	434	case SAI_ASYNCHRONOUS :
sahilmgandhi	18:6a4db94011d3	435	{
sahilmgandhi	18:6a4db94011d3	436	syncen_bits = 0U;
sahilmgandhi	18:6a4db94011d3	437	}
sahilmgandhi	18:6a4db94011d3	438	break;
sahilmgandhi	18:6a4db94011d3	439	case SAI_SYNCHRONOUS :
sahilmgandhi	18:6a4db94011d3	440	{
sahilmgandhi	18:6a4db94011d3	441	syncen_bits = SAI_xCR1_SYNCEN_0;
sahilmgandhi	18:6a4db94011d3	442	}
sahilmgandhi	18:6a4db94011d3	443	break;
sahilmgandhi	18:6a4db94011d3	444	case SAI_SYNCHRONOUS_EXT_SAI1 :
sahilmgandhi	18:6a4db94011d3	445	case SAI_SYNCHRONOUS_EXT_SAI2 :
sahilmgandhi	18:6a4db94011d3	446	{
sahilmgandhi	18:6a4db94011d3	447	syncen_bits = SAI_xCR1_SYNCEN_1;
sahilmgandhi	18:6a4db94011d3	448	}
sahilmgandhi	18:6a4db94011d3	449	break;
sahilmgandhi	18:6a4db94011d3	450	default:
sahilmgandhi	18:6a4db94011d3	451	break;
sahilmgandhi	18:6a4db94011d3	452	}
sahilmgandhi	18:6a4db94011d3	453	/* SAI CR1 Configuration */
sahilmgandhi	18:6a4db94011d3	454	hsai->Instance->CR1 &= ~(SAI_xCR1_MODE \| SAI_xCR1_PRTCFG \| SAI_xCR1_DS \| \
sahilmgandhi	18:6a4db94011d3	455	SAI_xCR1_LSBFIRST \| SAI_xCR1_CKSTR \| SAI_xCR1_SYNCEN \|\
sahilmgandhi	18:6a4db94011d3	456	SAI_xCR1_MONO \| SAI_xCR1_OUTDRIV \| SAI_xCR1_DMAEN \| \
sahilmgandhi	18:6a4db94011d3	457	SAI_xCR1_NODIV \| SAI_xCR1_MCKDIV);
sahilmgandhi	18:6a4db94011d3	458
sahilmgandhi	18:6a4db94011d3	459	hsai->Instance->CR1 \|= (hsai->Init.AudioMode \| hsai->Init.Protocol \| \
sahilmgandhi	18:6a4db94011d3	460	hsai->Init.DataSize \| hsai->Init.FirstBit \| \
sahilmgandhi	18:6a4db94011d3	461	ckstr_bits \| syncen_bits \| \
sahilmgandhi	18:6a4db94011d3	462	hsai->Init.MonoStereoMode \| hsai->Init.OutputDrive \| \
sahilmgandhi	18:6a4db94011d3	463	hsai->Init.NoDivider \| (hsai->Init.Mckdiv << 20U));
sahilmgandhi	18:6a4db94011d3	464
sahilmgandhi	18:6a4db94011d3	465	/* SAI CR2 Configuration */
sahilmgandhi	18:6a4db94011d3	466	hsai->Instance->CR2 &= ~(SAI_xCR2_FTH \| SAI_xCR2_FFLUSH \| SAI_xCR2_COMP \| SAI_xCR2_CPL);
sahilmgandhi	18:6a4db94011d3	467	hsai->Instance->CR2 \|= (hsai->Init.FIFOThreshold \| hsai->Init.CompandingMode \| hsai->Init.TriState);
sahilmgandhi	18:6a4db94011d3	468
sahilmgandhi	18:6a4db94011d3	469	/* SAI Frame Configuration -----------------------------------------*/
sahilmgandhi	18:6a4db94011d3	470	hsai->Instance->FRCR&=(~(SAI_xFRCR_FRL \| SAI_xFRCR_FSALL \| SAI_xFRCR_FSDEF \| \
sahilmgandhi	18:6a4db94011d3	471	SAI_xFRCR_FSPOL \| SAI_xFRCR_FSOFF));
sahilmgandhi	18:6a4db94011d3	472	hsai->Instance->FRCR\|=((hsai->FrameInit.FrameLength - 1U) \|
sahilmgandhi	18:6a4db94011d3	473	hsai->FrameInit.FSOffset \|
sahilmgandhi	18:6a4db94011d3	474	hsai->FrameInit.FSDefinition \|
sahilmgandhi	18:6a4db94011d3	475	hsai->FrameInit.FSPolarity \|
sahilmgandhi	18:6a4db94011d3	476	((hsai->FrameInit.ActiveFrameLength - 1U) << 8U));
sahilmgandhi	18:6a4db94011d3	477
sahilmgandhi	18:6a4db94011d3	478	/* SAI Block_x SLOT Configuration ------------------------------------------*/
sahilmgandhi	18:6a4db94011d3	479	/* This register has no meaning in AC 97 and SPDIF audio protocol */
sahilmgandhi	18:6a4db94011d3	480	hsai->Instance->SLOTR &= ~(SAI_xSLOTR_FBOFF \| SAI_xSLOTR_SLOTSZ \| \
sahilmgandhi	18:6a4db94011d3	481	SAI_xSLOTR_NBSLOT \| SAI_xSLOTR_SLOTEN );
sahilmgandhi	18:6a4db94011d3	482
sahilmgandhi	18:6a4db94011d3	483	hsai->Instance->SLOTR \|= hsai->SlotInit.FirstBitOffset \| hsai->SlotInit.SlotSize \| \
sahilmgandhi	18:6a4db94011d3	484	(hsai->SlotInit.SlotActive << 16U) \| ((hsai->SlotInit.SlotNumber - 1U) << 8U);
sahilmgandhi	18:6a4db94011d3	485
sahilmgandhi	18:6a4db94011d3	486	/* Initialize the error code */
sahilmgandhi	18:6a4db94011d3	487	hsai->ErrorCode = HAL_SAI_ERROR_NONE;
sahilmgandhi	18:6a4db94011d3	488
sahilmgandhi	18:6a4db94011d3	489	/* Initialize the SAI state */
sahilmgandhi	18:6a4db94011d3	490	hsai->State= HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	491
sahilmgandhi	18:6a4db94011d3	492	/* Release Lock */
sahilmgandhi	18:6a4db94011d3	493	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	494
sahilmgandhi	18:6a4db94011d3	495	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	496	}
sahilmgandhi	18:6a4db94011d3	497
sahilmgandhi	18:6a4db94011d3	498	/**
sahilmgandhi	18:6a4db94011d3	499	* @brief DeInitialize the SAI peripheral.
sahilmgandhi	18:6a4db94011d3	500	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	501	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	502	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	503	*/
sahilmgandhi	18:6a4db94011d3	504	HAL_StatusTypeDef HAL_SAI_DeInit(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	505	{
sahilmgandhi	18:6a4db94011d3	506	/* Check the SAI handle allocation */
sahilmgandhi	18:6a4db94011d3	507	if(hsai == NULL)
sahilmgandhi	18:6a4db94011d3	508	{
sahilmgandhi	18:6a4db94011d3	509	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	510	}
sahilmgandhi	18:6a4db94011d3	511
sahilmgandhi	18:6a4db94011d3	512	hsai->State = HAL_SAI_STATE_BUSY;
sahilmgandhi	18:6a4db94011d3	513
sahilmgandhi	18:6a4db94011d3	514	/* Disabled All interrupt and clear all the flag */
sahilmgandhi	18:6a4db94011d3	515	hsai->Instance->IMR = 0U;
sahilmgandhi	18:6a4db94011d3	516	hsai->Instance->CLRFR = 0xFFFFFFFFU;
sahilmgandhi	18:6a4db94011d3	517
sahilmgandhi	18:6a4db94011d3	518	/* Disable the SAI */
sahilmgandhi	18:6a4db94011d3	519	SAI_Disable(hsai);
sahilmgandhi	18:6a4db94011d3	520
sahilmgandhi	18:6a4db94011d3	521	/* Flush the fifo */
sahilmgandhi	18:6a4db94011d3	522	SET_BIT(hsai->Instance->CR2, SAI_xCR2_FFLUSH);
sahilmgandhi	18:6a4db94011d3	523
sahilmgandhi	18:6a4db94011d3	524	/* DeInit the low level hardware: GPIO, CLOCK, NVIC and DMA */
sahilmgandhi	18:6a4db94011d3	525	HAL_SAI_MspDeInit(hsai);
sahilmgandhi	18:6a4db94011d3	526
sahilmgandhi	18:6a4db94011d3	527	/* Initialize the error code */
sahilmgandhi	18:6a4db94011d3	528	hsai->ErrorCode = HAL_SAI_ERROR_NONE;
sahilmgandhi	18:6a4db94011d3	529
sahilmgandhi	18:6a4db94011d3	530	/* Initialize the SAI state */
sahilmgandhi	18:6a4db94011d3	531	hsai->State = HAL_SAI_STATE_RESET;
sahilmgandhi	18:6a4db94011d3	532
sahilmgandhi	18:6a4db94011d3	533	/* Release Lock */
sahilmgandhi	18:6a4db94011d3	534	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	535
sahilmgandhi	18:6a4db94011d3	536	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	537	}
sahilmgandhi	18:6a4db94011d3	538
sahilmgandhi	18:6a4db94011d3	539	/**
sahilmgandhi	18:6a4db94011d3	540	* @brief Initialize the SAI MSP.
sahilmgandhi	18:6a4db94011d3	541	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	542	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	543	* @retval None
sahilmgandhi	18:6a4db94011d3	544	*/
sahilmgandhi	18:6a4db94011d3	545	__weak void HAL_SAI_MspInit(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	546	{
sahilmgandhi	18:6a4db94011d3	547	/* Prevent unused argument(s) compilation warning */
sahilmgandhi	18:6a4db94011d3	548	UNUSED(hsai);
sahilmgandhi	18:6a4db94011d3	549
sahilmgandhi	18:6a4db94011d3	550	/* NOTE : This function should not be modified, when the callback is needed,
sahilmgandhi	18:6a4db94011d3	551	the HAL_SAI_MspInit could be implemented in the user file
sahilmgandhi	18:6a4db94011d3	552	*/
sahilmgandhi	18:6a4db94011d3	553	}
sahilmgandhi	18:6a4db94011d3	554
sahilmgandhi	18:6a4db94011d3	555	/**
sahilmgandhi	18:6a4db94011d3	556	* @brief DeInitialize the SAI MSP.
sahilmgandhi	18:6a4db94011d3	557	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	558	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	559	* @retval None
sahilmgandhi	18:6a4db94011d3	560	*/
sahilmgandhi	18:6a4db94011d3	561	__weak void HAL_SAI_MspDeInit(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	562	{
sahilmgandhi	18:6a4db94011d3	563	/* Prevent unused argument(s) compilation warning */
sahilmgandhi	18:6a4db94011d3	564	UNUSED(hsai);
sahilmgandhi	18:6a4db94011d3	565
sahilmgandhi	18:6a4db94011d3	566	/* NOTE : This function should not be modified, when the callback is needed,
sahilmgandhi	18:6a4db94011d3	567	the HAL_SAI_MspDeInit could be implemented in the user file
sahilmgandhi	18:6a4db94011d3	568	*/
sahilmgandhi	18:6a4db94011d3	569	}
sahilmgandhi	18:6a4db94011d3	570
sahilmgandhi	18:6a4db94011d3	571	/**
sahilmgandhi	18:6a4db94011d3	572	* @}
sahilmgandhi	18:6a4db94011d3	573	*/
sahilmgandhi	18:6a4db94011d3	574
sahilmgandhi	18:6a4db94011d3	575	/** @defgroup SAI_Exported_Functions_Group2 IO operation functions
sahilmgandhi	18:6a4db94011d3	576	* @brief Data transfers functions
sahilmgandhi	18:6a4db94011d3	577	*
sahilmgandhi	18:6a4db94011d3	578	@verbatim
sahilmgandhi	18:6a4db94011d3	579	==============================================================================
sahilmgandhi	18:6a4db94011d3	580	##### IO operation functions #####
sahilmgandhi	18:6a4db94011d3	581	==============================================================================
sahilmgandhi	18:6a4db94011d3	582	[..]
sahilmgandhi	18:6a4db94011d3	583	This subsection provides a set of functions allowing to manage the SAI data
sahilmgandhi	18:6a4db94011d3	584	transfers.
sahilmgandhi	18:6a4db94011d3	585
sahilmgandhi	18:6a4db94011d3	586	(+) There are two modes of transfer:
sahilmgandhi	18:6a4db94011d3	587	(++) Blocking mode : The communication is performed in the polling mode.
sahilmgandhi	18:6a4db94011d3	588	The status of all data processing is returned by the same function
sahilmgandhi	18:6a4db94011d3	589	after finishing transfer.
sahilmgandhi	18:6a4db94011d3	590	(++) No-Blocking mode : The communication is performed using Interrupts
sahilmgandhi	18:6a4db94011d3	591	or DMA. These functions return the status of the transfer startup.
sahilmgandhi	18:6a4db94011d3	592	The end of the data processing will be indicated through the
sahilmgandhi	18:6a4db94011d3	593	dedicated SAI IRQ when using Interrupt mode or the DMA IRQ when
sahilmgandhi	18:6a4db94011d3	594	using DMA mode.
sahilmgandhi	18:6a4db94011d3	595
sahilmgandhi	18:6a4db94011d3	596	(+) Blocking mode functions are :
sahilmgandhi	18:6a4db94011d3	597	(++) HAL_SAI_Transmit()
sahilmgandhi	18:6a4db94011d3	598	(++) HAL_SAI_Receive()
sahilmgandhi	18:6a4db94011d3	599	(++) HAL_SAI_TransmitReceive()
sahilmgandhi	18:6a4db94011d3	600
sahilmgandhi	18:6a4db94011d3	601	(+) Non Blocking mode functions with Interrupt are :
sahilmgandhi	18:6a4db94011d3	602	(++) HAL_SAI_Transmit_IT()
sahilmgandhi	18:6a4db94011d3	603	(++) HAL_SAI_Receive_IT()
sahilmgandhi	18:6a4db94011d3	604	(++) HAL_SAI_TransmitReceive_IT()
sahilmgandhi	18:6a4db94011d3	605
sahilmgandhi	18:6a4db94011d3	606	(+) Non Blocking mode functions with DMA are :
sahilmgandhi	18:6a4db94011d3	607	(++) HAL_SAI_Transmit_DMA()
sahilmgandhi	18:6a4db94011d3	608	(++) HAL_SAI_Receive_DMA()
sahilmgandhi	18:6a4db94011d3	609	(++) HAL_SAI_TransmitReceive_DMA()
sahilmgandhi	18:6a4db94011d3	610
sahilmgandhi	18:6a4db94011d3	611	(+) A set of Transfer Complete Callbacks are provided in non Blocking mode:
sahilmgandhi	18:6a4db94011d3	612	(++) HAL_SAI_TxCpltCallback()
sahilmgandhi	18:6a4db94011d3	613	(++) HAL_SAI_RxCpltCallback()
sahilmgandhi	18:6a4db94011d3	614	(++) HAL_SAI_ErrorCallback()
sahilmgandhi	18:6a4db94011d3	615
sahilmgandhi	18:6a4db94011d3	616	@endverbatim
sahilmgandhi	18:6a4db94011d3	617	* @{
sahilmgandhi	18:6a4db94011d3	618	*/
sahilmgandhi	18:6a4db94011d3	619
sahilmgandhi	18:6a4db94011d3	620	/**
sahilmgandhi	18:6a4db94011d3	621	* @brief Transmit an amount of data in blocking mode.
sahilmgandhi	18:6a4db94011d3	622	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	623	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	624	* @param pData: Pointer to data buffer
sahilmgandhi	18:6a4db94011d3	625	* @param Size: Amount of data to be sent
sahilmgandhi	18:6a4db94011d3	626	* @param Timeout: Timeout duration
sahilmgandhi	18:6a4db94011d3	627	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	628	*/
sahilmgandhi	18:6a4db94011d3	629	HAL_StatusTypeDef HAL_SAI_Transmit(SAI_HandleTypeDef hsai, uint8_t pData, uint16_t Size, uint32_t Timeout)
sahilmgandhi	18:6a4db94011d3	630	{
sahilmgandhi	18:6a4db94011d3	631	uint32_t tickstart = HAL_GetTick();
sahilmgandhi	18:6a4db94011d3	632
sahilmgandhi	18:6a4db94011d3	633	if((pData == NULL ) \|\| (Size == 0U))
sahilmgandhi	18:6a4db94011d3	634	{
sahilmgandhi	18:6a4db94011d3	635	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	636	}
sahilmgandhi	18:6a4db94011d3	637
sahilmgandhi	18:6a4db94011d3	638	if(hsai->State == HAL_SAI_STATE_READY)
sahilmgandhi	18:6a4db94011d3	639	{
sahilmgandhi	18:6a4db94011d3	640	/* Process Locked */
sahilmgandhi	18:6a4db94011d3	641	__HAL_LOCK(hsai);
sahilmgandhi	18:6a4db94011d3	642
sahilmgandhi	18:6a4db94011d3	643	hsai->XferSize = Size;
sahilmgandhi	18:6a4db94011d3	644	hsai->XferCount = Size;
sahilmgandhi	18:6a4db94011d3	645	hsai->pBuffPtr = pData;
sahilmgandhi	18:6a4db94011d3	646	hsai->State = HAL_SAI_STATE_BUSY_TX;
sahilmgandhi	18:6a4db94011d3	647	hsai->ErrorCode = HAL_SAI_ERROR_NONE;
sahilmgandhi	18:6a4db94011d3	648
sahilmgandhi	18:6a4db94011d3	649	/* Check if the SAI is already enabled */
sahilmgandhi	18:6a4db94011d3	650	if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET)
sahilmgandhi	18:6a4db94011d3	651	{
sahilmgandhi	18:6a4db94011d3	652	/* fill the fifo with data before to enabled the SAI */
sahilmgandhi	18:6a4db94011d3	653	SAI_FillFifo(hsai);
sahilmgandhi	18:6a4db94011d3	654	/* Enable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	655	__HAL_SAI_ENABLE(hsai);
sahilmgandhi	18:6a4db94011d3	656	}
sahilmgandhi	18:6a4db94011d3	657
sahilmgandhi	18:6a4db94011d3	658	while(hsai->XferCount > 0U)
sahilmgandhi	18:6a4db94011d3	659	{
sahilmgandhi	18:6a4db94011d3	660	/* Write data if the FIFO is not full */
sahilmgandhi	18:6a4db94011d3	661	if((hsai->Instance->SR & SAI_xSR_FLVL) != SAI_FIFOSTATUS_FULL)
sahilmgandhi	18:6a4db94011d3	662	{
sahilmgandhi	18:6a4db94011d3	663	if((hsai->Init.DataSize == SAI_DATASIZE_8) && (hsai->Init.CompandingMode == SAI_NOCOMPANDING))
sahilmgandhi	18:6a4db94011d3	664	{
sahilmgandhi	18:6a4db94011d3	665	hsai->Instance->DR = (*hsai->pBuffPtr++);
sahilmgandhi	18:6a4db94011d3	666	}
sahilmgandhi	18:6a4db94011d3	667	else if(hsai->Init.DataSize <= SAI_DATASIZE_16)
sahilmgandhi	18:6a4db94011d3	668	{
sahilmgandhi	18:6a4db94011d3	669	hsai->Instance->DR = ((uint16_t )hsai->pBuffPtr);
sahilmgandhi	18:6a4db94011d3	670	hsai->pBuffPtr+= 2U;
sahilmgandhi	18:6a4db94011d3	671	}
sahilmgandhi	18:6a4db94011d3	672	else
sahilmgandhi	18:6a4db94011d3	673	{
sahilmgandhi	18:6a4db94011d3	674	hsai->Instance->DR = ((uint32_t )hsai->pBuffPtr);
sahilmgandhi	18:6a4db94011d3	675	hsai->pBuffPtr+= 4U;
sahilmgandhi	18:6a4db94011d3	676	}
sahilmgandhi	18:6a4db94011d3	677	hsai->XferCount--;
sahilmgandhi	18:6a4db94011d3	678	}
sahilmgandhi	18:6a4db94011d3	679	else
sahilmgandhi	18:6a4db94011d3	680	{
sahilmgandhi	18:6a4db94011d3	681	/* Check for the Timeout */
sahilmgandhi	18:6a4db94011d3	682	if((Timeout != HAL_MAX_DELAY) && ((Timeout == 0U)\|\|((HAL_GetTick() - tickstart) > Timeout)))
sahilmgandhi	18:6a4db94011d3	683	{
sahilmgandhi	18:6a4db94011d3	684	/* Update error code */
sahilmgandhi	18:6a4db94011d3	685	hsai->ErrorCode \|= HAL_SAI_ERROR_TIMEOUT;
sahilmgandhi	18:6a4db94011d3	686
sahilmgandhi	18:6a4db94011d3	687	/* Clear all the flags */
sahilmgandhi	18:6a4db94011d3	688	hsai->Instance->CLRFR = 0xFFFFFFFFU;
sahilmgandhi	18:6a4db94011d3	689
sahilmgandhi	18:6a4db94011d3	690	/* Disable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	691	SAI_Disable(hsai);
sahilmgandhi	18:6a4db94011d3	692
sahilmgandhi	18:6a4db94011d3	693	/* Flush the fifo */
sahilmgandhi	18:6a4db94011d3	694	SET_BIT(hsai->Instance->CR2, SAI_xCR2_FFLUSH);
sahilmgandhi	18:6a4db94011d3	695
sahilmgandhi	18:6a4db94011d3	696	/* Change the SAI state */
sahilmgandhi	18:6a4db94011d3	697	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	698
sahilmgandhi	18:6a4db94011d3	699	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	700	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	701
sahilmgandhi	18:6a4db94011d3	702	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	703	}
sahilmgandhi	18:6a4db94011d3	704	}
sahilmgandhi	18:6a4db94011d3	705	}
sahilmgandhi	18:6a4db94011d3	706
sahilmgandhi	18:6a4db94011d3	707	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	708
sahilmgandhi	18:6a4db94011d3	709	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	710	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	711
sahilmgandhi	18:6a4db94011d3	712	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	713	}
sahilmgandhi	18:6a4db94011d3	714	else
sahilmgandhi	18:6a4db94011d3	715	{
sahilmgandhi	18:6a4db94011d3	716	return HAL_BUSY;
sahilmgandhi	18:6a4db94011d3	717	}
sahilmgandhi	18:6a4db94011d3	718	}
sahilmgandhi	18:6a4db94011d3	719
sahilmgandhi	18:6a4db94011d3	720	/**
sahilmgandhi	18:6a4db94011d3	721	* @brief Receive an amount of data in blocking mode.
sahilmgandhi	18:6a4db94011d3	722	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	723	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	724	* @param pData: Pointer to data buffer
sahilmgandhi	18:6a4db94011d3	725	* @param Size: Amount of data to be received
sahilmgandhi	18:6a4db94011d3	726	* @param Timeout: Timeout duration
sahilmgandhi	18:6a4db94011d3	727	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	728	*/
sahilmgandhi	18:6a4db94011d3	729	HAL_StatusTypeDef HAL_SAI_Receive(SAI_HandleTypeDef hsai, uint8_t pData, uint16_t Size, uint32_t Timeout)
sahilmgandhi	18:6a4db94011d3	730	{
sahilmgandhi	18:6a4db94011d3	731	uint32_t tickstart = HAL_GetTick();
sahilmgandhi	18:6a4db94011d3	732
sahilmgandhi	18:6a4db94011d3	733	if((pData == NULL ) \|\| (Size == 0U))
sahilmgandhi	18:6a4db94011d3	734	{
sahilmgandhi	18:6a4db94011d3	735	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	736	}
sahilmgandhi	18:6a4db94011d3	737
sahilmgandhi	18:6a4db94011d3	738	if(hsai->State == HAL_SAI_STATE_READY)
sahilmgandhi	18:6a4db94011d3	739	{
sahilmgandhi	18:6a4db94011d3	740	/* Process Locked */
sahilmgandhi	18:6a4db94011d3	741	__HAL_LOCK(hsai);
sahilmgandhi	18:6a4db94011d3	742
sahilmgandhi	18:6a4db94011d3	743	hsai->pBuffPtr = pData;
sahilmgandhi	18:6a4db94011d3	744	hsai->XferSize = Size;
sahilmgandhi	18:6a4db94011d3	745	hsai->XferCount = Size;
sahilmgandhi	18:6a4db94011d3	746	hsai->State = HAL_SAI_STATE_BUSY_RX;
sahilmgandhi	18:6a4db94011d3	747	hsai->ErrorCode = HAL_SAI_ERROR_NONE;
sahilmgandhi	18:6a4db94011d3	748
sahilmgandhi	18:6a4db94011d3	749	/* Check if the SAI is already enabled */
sahilmgandhi	18:6a4db94011d3	750	if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET)
sahilmgandhi	18:6a4db94011d3	751	{
sahilmgandhi	18:6a4db94011d3	752	/* Enable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	753	__HAL_SAI_ENABLE(hsai);
sahilmgandhi	18:6a4db94011d3	754	}
sahilmgandhi	18:6a4db94011d3	755
sahilmgandhi	18:6a4db94011d3	756	/* Receive data */
sahilmgandhi	18:6a4db94011d3	757	while(hsai->XferCount > 0U)
sahilmgandhi	18:6a4db94011d3	758	{
sahilmgandhi	18:6a4db94011d3	759	if((hsai->Instance->SR & SAI_xSR_FLVL) != SAI_FIFOSTATUS_EMPTY)
sahilmgandhi	18:6a4db94011d3	760	{
sahilmgandhi	18:6a4db94011d3	761	if((hsai->Init.DataSize == SAI_DATASIZE_8) && (hsai->Init.CompandingMode == SAI_NOCOMPANDING))
sahilmgandhi	18:6a4db94011d3	762	{
sahilmgandhi	18:6a4db94011d3	763	(*hsai->pBuffPtr++) = hsai->Instance->DR;
sahilmgandhi	18:6a4db94011d3	764	}
sahilmgandhi	18:6a4db94011d3	765	else if(hsai->Init.DataSize <= SAI_DATASIZE_16)
sahilmgandhi	18:6a4db94011d3	766	{
sahilmgandhi	18:6a4db94011d3	767	((uint16_t)hsai->pBuffPtr) = hsai->Instance->DR;
sahilmgandhi	18:6a4db94011d3	768	hsai->pBuffPtr+= 2U;
sahilmgandhi	18:6a4db94011d3	769	}
sahilmgandhi	18:6a4db94011d3	770	else
sahilmgandhi	18:6a4db94011d3	771	{
sahilmgandhi	18:6a4db94011d3	772	((uint32_t)hsai->pBuffPtr) = hsai->Instance->DR;
sahilmgandhi	18:6a4db94011d3	773	hsai->pBuffPtr+= 4U;
sahilmgandhi	18:6a4db94011d3	774	}
sahilmgandhi	18:6a4db94011d3	775	hsai->XferCount--;
sahilmgandhi	18:6a4db94011d3	776	}
sahilmgandhi	18:6a4db94011d3	777	else
sahilmgandhi	18:6a4db94011d3	778	{
sahilmgandhi	18:6a4db94011d3	779	/* Check for the Timeout */
sahilmgandhi	18:6a4db94011d3	780	if((Timeout != HAL_MAX_DELAY) && ((Timeout == 0U)\|\|((HAL_GetTick() - tickstart ) > Timeout)))
sahilmgandhi	18:6a4db94011d3	781	{
sahilmgandhi	18:6a4db94011d3	782	/* Update error code */
sahilmgandhi	18:6a4db94011d3	783	hsai->ErrorCode \|= HAL_SAI_ERROR_TIMEOUT;
sahilmgandhi	18:6a4db94011d3	784
sahilmgandhi	18:6a4db94011d3	785	/* Clear all the flags */
sahilmgandhi	18:6a4db94011d3	786	hsai->Instance->CLRFR = 0xFFFFFFFFU;
sahilmgandhi	18:6a4db94011d3	787
sahilmgandhi	18:6a4db94011d3	788	/* Disable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	789	SAI_Disable(hsai);
sahilmgandhi	18:6a4db94011d3	790
sahilmgandhi	18:6a4db94011d3	791	/* Flush the fifo */
sahilmgandhi	18:6a4db94011d3	792	SET_BIT(hsai->Instance->CR2, SAI_xCR2_FFLUSH);
sahilmgandhi	18:6a4db94011d3	793
sahilmgandhi	18:6a4db94011d3	794	/* Change the SAI state */
sahilmgandhi	18:6a4db94011d3	795	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	796
sahilmgandhi	18:6a4db94011d3	797	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	798	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	799
sahilmgandhi	18:6a4db94011d3	800	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	801	}
sahilmgandhi	18:6a4db94011d3	802	}
sahilmgandhi	18:6a4db94011d3	803	}
sahilmgandhi	18:6a4db94011d3	804
sahilmgandhi	18:6a4db94011d3	805	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	806
sahilmgandhi	18:6a4db94011d3	807	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	808	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	809
sahilmgandhi	18:6a4db94011d3	810	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	811	}
sahilmgandhi	18:6a4db94011d3	812	else
sahilmgandhi	18:6a4db94011d3	813	{
sahilmgandhi	18:6a4db94011d3	814	return HAL_BUSY;
sahilmgandhi	18:6a4db94011d3	815	}
sahilmgandhi	18:6a4db94011d3	816	}
sahilmgandhi	18:6a4db94011d3	817
sahilmgandhi	18:6a4db94011d3	818	/**
sahilmgandhi	18:6a4db94011d3	819	* @brief Transmit an amount of data in non-blocking mode with Interrupt.
sahilmgandhi	18:6a4db94011d3	820	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	821	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	822	* @param pData: Pointer to data buffer
sahilmgandhi	18:6a4db94011d3	823	* @param Size: Amount of data to be sent
sahilmgandhi	18:6a4db94011d3	824	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	825	*/
sahilmgandhi	18:6a4db94011d3	826	HAL_StatusTypeDef HAL_SAI_Transmit_IT(SAI_HandleTypeDef hsai, uint8_t pData, uint16_t Size)
sahilmgandhi	18:6a4db94011d3	827	{
sahilmgandhi	18:6a4db94011d3	828	if((pData == NULL) \|\| (Size == 0U))
sahilmgandhi	18:6a4db94011d3	829	{
sahilmgandhi	18:6a4db94011d3	830	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	831	}
sahilmgandhi	18:6a4db94011d3	832
sahilmgandhi	18:6a4db94011d3	833	if(hsai->State == HAL_SAI_STATE_READY)
sahilmgandhi	18:6a4db94011d3	834	{
sahilmgandhi	18:6a4db94011d3	835	/* Process Locked */
sahilmgandhi	18:6a4db94011d3	836	__HAL_LOCK(hsai);
sahilmgandhi	18:6a4db94011d3	837
sahilmgandhi	18:6a4db94011d3	838	hsai->pBuffPtr = pData;
sahilmgandhi	18:6a4db94011d3	839	hsai->XferSize = Size;
sahilmgandhi	18:6a4db94011d3	840	hsai->XferCount = Size;
sahilmgandhi	18:6a4db94011d3	841	hsai->ErrorCode = HAL_SAI_ERROR_NONE;
sahilmgandhi	18:6a4db94011d3	842	hsai->State = HAL_SAI_STATE_BUSY_TX;
sahilmgandhi	18:6a4db94011d3	843
sahilmgandhi	18:6a4db94011d3	844	if((hsai->Init.DataSize == SAI_DATASIZE_8) && (hsai->Init.CompandingMode == SAI_NOCOMPANDING))
sahilmgandhi	18:6a4db94011d3	845	{
sahilmgandhi	18:6a4db94011d3	846	hsai->InterruptServiceRoutine = SAI_Transmit_IT8Bit;
sahilmgandhi	18:6a4db94011d3	847	}
sahilmgandhi	18:6a4db94011d3	848	else if(hsai->Init.DataSize <= SAI_DATASIZE_16)
sahilmgandhi	18:6a4db94011d3	849	{
sahilmgandhi	18:6a4db94011d3	850	hsai->InterruptServiceRoutine = SAI_Transmit_IT16Bit;
sahilmgandhi	18:6a4db94011d3	851	}
sahilmgandhi	18:6a4db94011d3	852	else
sahilmgandhi	18:6a4db94011d3	853	{
sahilmgandhi	18:6a4db94011d3	854	hsai->InterruptServiceRoutine = SAI_Transmit_IT32Bit;
sahilmgandhi	18:6a4db94011d3	855	}
sahilmgandhi	18:6a4db94011d3	856
sahilmgandhi	18:6a4db94011d3	857	/* Fill the fifo before starting the communication */
sahilmgandhi	18:6a4db94011d3	858	SAI_FillFifo(hsai);
sahilmgandhi	18:6a4db94011d3	859
sahilmgandhi	18:6a4db94011d3	860	/* Enable FRQ and OVRUDR interrupts */
sahilmgandhi	18:6a4db94011d3	861	__HAL_SAI_ENABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT));
sahilmgandhi	18:6a4db94011d3	862
sahilmgandhi	18:6a4db94011d3	863	/* Check if the SAI is already enabled */
sahilmgandhi	18:6a4db94011d3	864	if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET)
sahilmgandhi	18:6a4db94011d3	865	{
sahilmgandhi	18:6a4db94011d3	866	/* Enable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	867	__HAL_SAI_ENABLE(hsai);
sahilmgandhi	18:6a4db94011d3	868	}
sahilmgandhi	18:6a4db94011d3	869	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	870	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	871
sahilmgandhi	18:6a4db94011d3	872	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	873	}
sahilmgandhi	18:6a4db94011d3	874	else
sahilmgandhi	18:6a4db94011d3	875	{
sahilmgandhi	18:6a4db94011d3	876	return HAL_BUSY;
sahilmgandhi	18:6a4db94011d3	877	}
sahilmgandhi	18:6a4db94011d3	878	}
sahilmgandhi	18:6a4db94011d3	879
sahilmgandhi	18:6a4db94011d3	880	/**
sahilmgandhi	18:6a4db94011d3	881	* @brief Receive an amount of data in non-blocking mode with Interrupt.
sahilmgandhi	18:6a4db94011d3	882	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	883	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	884	* @param pData: Pointer to data buffer
sahilmgandhi	18:6a4db94011d3	885	* @param Size: Amount of data to be received
sahilmgandhi	18:6a4db94011d3	886	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	887	*/
sahilmgandhi	18:6a4db94011d3	888	HAL_StatusTypeDef HAL_SAI_Receive_IT(SAI_HandleTypeDef hsai, uint8_t pData, uint16_t Size)
sahilmgandhi	18:6a4db94011d3	889	{
sahilmgandhi	18:6a4db94011d3	890	if((pData == NULL) \|\| (Size == 0U))
sahilmgandhi	18:6a4db94011d3	891	{
sahilmgandhi	18:6a4db94011d3	892	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	893	}
sahilmgandhi	18:6a4db94011d3	894
sahilmgandhi	18:6a4db94011d3	895	if(hsai->State == HAL_SAI_STATE_READY)
sahilmgandhi	18:6a4db94011d3	896	{
sahilmgandhi	18:6a4db94011d3	897	/* Process Locked */
sahilmgandhi	18:6a4db94011d3	898	__HAL_LOCK(hsai);
sahilmgandhi	18:6a4db94011d3	899
sahilmgandhi	18:6a4db94011d3	900	hsai->pBuffPtr = pData;
sahilmgandhi	18:6a4db94011d3	901	hsai->XferSize = Size;
sahilmgandhi	18:6a4db94011d3	902	hsai->XferCount = Size;
sahilmgandhi	18:6a4db94011d3	903	hsai->ErrorCode = HAL_SAI_ERROR_NONE;
sahilmgandhi	18:6a4db94011d3	904	hsai->State = HAL_SAI_STATE_BUSY_RX;
sahilmgandhi	18:6a4db94011d3	905
sahilmgandhi	18:6a4db94011d3	906	if((hsai->Init.DataSize == SAI_DATASIZE_8) && (hsai->Init.CompandingMode == SAI_NOCOMPANDING))
sahilmgandhi	18:6a4db94011d3	907	{
sahilmgandhi	18:6a4db94011d3	908	hsai->InterruptServiceRoutine = SAI_Receive_IT8Bit;
sahilmgandhi	18:6a4db94011d3	909	}
sahilmgandhi	18:6a4db94011d3	910	else if(hsai->Init.DataSize <= SAI_DATASIZE_16)
sahilmgandhi	18:6a4db94011d3	911	{
sahilmgandhi	18:6a4db94011d3	912	hsai->InterruptServiceRoutine = SAI_Receive_IT16Bit;
sahilmgandhi	18:6a4db94011d3	913	}
sahilmgandhi	18:6a4db94011d3	914	else
sahilmgandhi	18:6a4db94011d3	915	{
sahilmgandhi	18:6a4db94011d3	916	hsai->InterruptServiceRoutine = SAI_Receive_IT32Bit;
sahilmgandhi	18:6a4db94011d3	917	}
sahilmgandhi	18:6a4db94011d3	918
sahilmgandhi	18:6a4db94011d3	919	/* Enable TXE and OVRUDR interrupts */
sahilmgandhi	18:6a4db94011d3	920	__HAL_SAI_ENABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT));
sahilmgandhi	18:6a4db94011d3	921
sahilmgandhi	18:6a4db94011d3	922	/* Check if the SAI is already enabled */
sahilmgandhi	18:6a4db94011d3	923	if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET)
sahilmgandhi	18:6a4db94011d3	924	{
sahilmgandhi	18:6a4db94011d3	925	/* Enable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	926	__HAL_SAI_ENABLE(hsai);
sahilmgandhi	18:6a4db94011d3	927	}
sahilmgandhi	18:6a4db94011d3	928
sahilmgandhi	18:6a4db94011d3	929	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	930	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	931
sahilmgandhi	18:6a4db94011d3	932	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	933	}
sahilmgandhi	18:6a4db94011d3	934	else
sahilmgandhi	18:6a4db94011d3	935	{
sahilmgandhi	18:6a4db94011d3	936	return HAL_BUSY;
sahilmgandhi	18:6a4db94011d3	937	}
sahilmgandhi	18:6a4db94011d3	938	}
sahilmgandhi	18:6a4db94011d3	939
sahilmgandhi	18:6a4db94011d3	940	/**
sahilmgandhi	18:6a4db94011d3	941	* @brief Pause the audio stream playing from the Media.
sahilmgandhi	18:6a4db94011d3	942	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	943	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	944	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	945	*/
sahilmgandhi	18:6a4db94011d3	946	HAL_StatusTypeDef HAL_SAI_DMAPause(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	947	{
sahilmgandhi	18:6a4db94011d3	948	/* Process Locked */
sahilmgandhi	18:6a4db94011d3	949	__HAL_LOCK(hsai);
sahilmgandhi	18:6a4db94011d3	950
sahilmgandhi	18:6a4db94011d3	951	/* Pause the audio file playing by disabling the SAI DMA requests */
sahilmgandhi	18:6a4db94011d3	952	hsai->Instance->CR1 &= ~SAI_xCR1_DMAEN;
sahilmgandhi	18:6a4db94011d3	953
sahilmgandhi	18:6a4db94011d3	954	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	955	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	956
sahilmgandhi	18:6a4db94011d3	957	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	958	}
sahilmgandhi	18:6a4db94011d3	959
sahilmgandhi	18:6a4db94011d3	960	/**
sahilmgandhi	18:6a4db94011d3	961	* @brief Resume the audio stream playing from the Media.
sahilmgandhi	18:6a4db94011d3	962	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	963	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	964	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	965	*/
sahilmgandhi	18:6a4db94011d3	966	HAL_StatusTypeDef HAL_SAI_DMAResume(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	967	{
sahilmgandhi	18:6a4db94011d3	968	/* Process Locked */
sahilmgandhi	18:6a4db94011d3	969	__HAL_LOCK(hsai);
sahilmgandhi	18:6a4db94011d3	970
sahilmgandhi	18:6a4db94011d3	971	/* Enable the SAI DMA requests */
sahilmgandhi	18:6a4db94011d3	972	hsai->Instance->CR1 \|= SAI_xCR1_DMAEN;
sahilmgandhi	18:6a4db94011d3	973
sahilmgandhi	18:6a4db94011d3	974	/* If the SAI peripheral is still not enabled, enable it */
sahilmgandhi	18:6a4db94011d3	975	if ((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET)
sahilmgandhi	18:6a4db94011d3	976	{
sahilmgandhi	18:6a4db94011d3	977	/* Enable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	978	__HAL_SAI_ENABLE(hsai);
sahilmgandhi	18:6a4db94011d3	979	}
sahilmgandhi	18:6a4db94011d3	980
sahilmgandhi	18:6a4db94011d3	981	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	982	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	983
sahilmgandhi	18:6a4db94011d3	984	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	985	}
sahilmgandhi	18:6a4db94011d3	986
sahilmgandhi	18:6a4db94011d3	987	/**
sahilmgandhi	18:6a4db94011d3	988	* @brief Stop the audio stream playing from the Media.
sahilmgandhi	18:6a4db94011d3	989	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	990	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	991	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	992	*/
sahilmgandhi	18:6a4db94011d3	993	HAL_StatusTypeDef HAL_SAI_DMAStop(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	994	{
sahilmgandhi	18:6a4db94011d3	995	/* Process Locked */
sahilmgandhi	18:6a4db94011d3	996	__HAL_LOCK(hsai);
sahilmgandhi	18:6a4db94011d3	997
sahilmgandhi	18:6a4db94011d3	998	/* Disable the SAI DMA request */
sahilmgandhi	18:6a4db94011d3	999	hsai->Instance->CR1 &= ~SAI_xCR1_DMAEN;
sahilmgandhi	18:6a4db94011d3	1000
sahilmgandhi	18:6a4db94011d3	1001	/* Abort the SAI DMA Streams */
sahilmgandhi	18:6a4db94011d3	1002	if(hsai->hdmatx != NULL)
sahilmgandhi	18:6a4db94011d3	1003	{
sahilmgandhi	18:6a4db94011d3	1004	if(HAL_DMA_Abort(hsai->hdmatx) != HAL_OK)
sahilmgandhi	18:6a4db94011d3	1005	{
sahilmgandhi	18:6a4db94011d3	1006	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1007	}
sahilmgandhi	18:6a4db94011d3	1008	}
sahilmgandhi	18:6a4db94011d3	1009
sahilmgandhi	18:6a4db94011d3	1010	if(hsai->hdmarx != NULL)
sahilmgandhi	18:6a4db94011d3	1011	{
sahilmgandhi	18:6a4db94011d3	1012	if(HAL_DMA_Abort(hsai->hdmarx) != HAL_OK)
sahilmgandhi	18:6a4db94011d3	1013	{
sahilmgandhi	18:6a4db94011d3	1014	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1015	}
sahilmgandhi	18:6a4db94011d3	1016	}
sahilmgandhi	18:6a4db94011d3	1017
sahilmgandhi	18:6a4db94011d3	1018	/* Disable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	1019	SAI_Disable(hsai);
sahilmgandhi	18:6a4db94011d3	1020
sahilmgandhi	18:6a4db94011d3	1021	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	1022
sahilmgandhi	18:6a4db94011d3	1023	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	1024	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	1025
sahilmgandhi	18:6a4db94011d3	1026	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	1027	}
sahilmgandhi	18:6a4db94011d3	1028
sahilmgandhi	18:6a4db94011d3	1029	/**
sahilmgandhi	18:6a4db94011d3	1030	* @brief Abort the current transfer and disable the SAI.
sahilmgandhi	18:6a4db94011d3	1031	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1032	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1033	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	1034	*/
sahilmgandhi	18:6a4db94011d3	1035	HAL_StatusTypeDef HAL_SAI_Abort(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1036	{
sahilmgandhi	18:6a4db94011d3	1037	/* Process Locked */
sahilmgandhi	18:6a4db94011d3	1038	__HAL_LOCK(hsai);
sahilmgandhi	18:6a4db94011d3	1039
sahilmgandhi	18:6a4db94011d3	1040	/* Check SAI DMA is enabled or not */
sahilmgandhi	18:6a4db94011d3	1041	if((hsai->Instance->CR1 & SAI_xCR1_DMAEN) == SAI_xCR1_DMAEN)
sahilmgandhi	18:6a4db94011d3	1042	{
sahilmgandhi	18:6a4db94011d3	1043	/* Disable the SAI DMA request */
sahilmgandhi	18:6a4db94011d3	1044	hsai->Instance->CR1 &= ~SAI_xCR1_DMAEN;
sahilmgandhi	18:6a4db94011d3	1045
sahilmgandhi	18:6a4db94011d3	1046	/* Abort the SAI DMA Streams */
sahilmgandhi	18:6a4db94011d3	1047	if(hsai->hdmatx != NULL)
sahilmgandhi	18:6a4db94011d3	1048	{
sahilmgandhi	18:6a4db94011d3	1049	if(HAL_DMA_Abort(hsai->hdmatx) != HAL_OK)
sahilmgandhi	18:6a4db94011d3	1050	{
sahilmgandhi	18:6a4db94011d3	1051	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1052	}
sahilmgandhi	18:6a4db94011d3	1053	}
sahilmgandhi	18:6a4db94011d3	1054
sahilmgandhi	18:6a4db94011d3	1055	if(hsai->hdmarx != NULL)
sahilmgandhi	18:6a4db94011d3	1056	{
sahilmgandhi	18:6a4db94011d3	1057	if(HAL_DMA_Abort(hsai->hdmarx) != HAL_OK)
sahilmgandhi	18:6a4db94011d3	1058	{
sahilmgandhi	18:6a4db94011d3	1059	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1060	}
sahilmgandhi	18:6a4db94011d3	1061	}
sahilmgandhi	18:6a4db94011d3	1062	}
sahilmgandhi	18:6a4db94011d3	1063
sahilmgandhi	18:6a4db94011d3	1064	/* Disabled All interrupt and clear all the flag */
sahilmgandhi	18:6a4db94011d3	1065	hsai->Instance->IMR = 0U;
sahilmgandhi	18:6a4db94011d3	1066	hsai->Instance->CLRFR = 0xFFFFFFFFU;
sahilmgandhi	18:6a4db94011d3	1067
sahilmgandhi	18:6a4db94011d3	1068	/* Disable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	1069	SAI_Disable(hsai);
sahilmgandhi	18:6a4db94011d3	1070
sahilmgandhi	18:6a4db94011d3	1071	/* Flush the fifo */
sahilmgandhi	18:6a4db94011d3	1072	SET_BIT(hsai->Instance->CR2, SAI_xCR2_FFLUSH);
sahilmgandhi	18:6a4db94011d3	1073
sahilmgandhi	18:6a4db94011d3	1074	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	1075
sahilmgandhi	18:6a4db94011d3	1076	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	1077	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	1078
sahilmgandhi	18:6a4db94011d3	1079	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	1080	}
sahilmgandhi	18:6a4db94011d3	1081
sahilmgandhi	18:6a4db94011d3	1082	/**
sahilmgandhi	18:6a4db94011d3	1083	* @brief Transmit an amount of data in non-blocking mode with DMA.
sahilmgandhi	18:6a4db94011d3	1084	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1085	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1086	* @param pData: Pointer to data buffer
sahilmgandhi	18:6a4db94011d3	1087	* @param Size: Amount of data to be sent
sahilmgandhi	18:6a4db94011d3	1088	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	1089	*/
sahilmgandhi	18:6a4db94011d3	1090	HAL_StatusTypeDef HAL_SAI_Transmit_DMA(SAI_HandleTypeDef hsai, uint8_t pData, uint16_t Size)
sahilmgandhi	18:6a4db94011d3	1091	{
sahilmgandhi	18:6a4db94011d3	1092	if((pData == NULL) \|\| (Size == 0U))
sahilmgandhi	18:6a4db94011d3	1093	{
sahilmgandhi	18:6a4db94011d3	1094	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1095	}
sahilmgandhi	18:6a4db94011d3	1096
sahilmgandhi	18:6a4db94011d3	1097	if(hsai->State == HAL_SAI_STATE_READY)
sahilmgandhi	18:6a4db94011d3	1098	{
sahilmgandhi	18:6a4db94011d3	1099	/* Process Locked */
sahilmgandhi	18:6a4db94011d3	1100	__HAL_LOCK(hsai);
sahilmgandhi	18:6a4db94011d3	1101
sahilmgandhi	18:6a4db94011d3	1102	hsai->pBuffPtr = pData;
sahilmgandhi	18:6a4db94011d3	1103	hsai->XferSize = Size;
sahilmgandhi	18:6a4db94011d3	1104	hsai->XferCount = Size;
sahilmgandhi	18:6a4db94011d3	1105	hsai->ErrorCode = HAL_SAI_ERROR_NONE;
sahilmgandhi	18:6a4db94011d3	1106	hsai->State = HAL_SAI_STATE_BUSY_TX;
sahilmgandhi	18:6a4db94011d3	1107
sahilmgandhi	18:6a4db94011d3	1108	/* Set the SAI Tx DMA Half transfer complete callback */
sahilmgandhi	18:6a4db94011d3	1109	hsai->hdmatx->XferHalfCpltCallback = SAI_DMATxHalfCplt;
sahilmgandhi	18:6a4db94011d3	1110
sahilmgandhi	18:6a4db94011d3	1111	/* Set the SAI TxDMA transfer complete callback */
sahilmgandhi	18:6a4db94011d3	1112	hsai->hdmatx->XferCpltCallback = SAI_DMATxCplt;
sahilmgandhi	18:6a4db94011d3	1113
sahilmgandhi	18:6a4db94011d3	1114	/* Set the DMA error callback */
sahilmgandhi	18:6a4db94011d3	1115	hsai->hdmatx->XferErrorCallback = SAI_DMAError;
sahilmgandhi	18:6a4db94011d3	1116
sahilmgandhi	18:6a4db94011d3	1117	/* Set the DMA Tx abort callback */
sahilmgandhi	18:6a4db94011d3	1118	hsai->hdmatx->XferAbortCallback = NULL;
sahilmgandhi	18:6a4db94011d3	1119
sahilmgandhi	18:6a4db94011d3	1120	/* Enable the Tx DMA Stream */
sahilmgandhi	18:6a4db94011d3	1121	if(HAL_DMA_Start_IT(hsai->hdmatx, (uint32_t)hsai->pBuffPtr, (uint32_t)&hsai->Instance->DR, hsai->XferSize) != HAL_OK)
sahilmgandhi	18:6a4db94011d3	1122	{
sahilmgandhi	18:6a4db94011d3	1123	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	1124	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1125	}
sahilmgandhi	18:6a4db94011d3	1126
sahilmgandhi	18:6a4db94011d3	1127	/* Check if the SAI is already enabled */
sahilmgandhi	18:6a4db94011d3	1128	if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET)
sahilmgandhi	18:6a4db94011d3	1129	{
sahilmgandhi	18:6a4db94011d3	1130	/* Enable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	1131	__HAL_SAI_ENABLE(hsai);
sahilmgandhi	18:6a4db94011d3	1132	}
sahilmgandhi	18:6a4db94011d3	1133
sahilmgandhi	18:6a4db94011d3	1134	/* Enable the interrupts for error handling */
sahilmgandhi	18:6a4db94011d3	1135	__HAL_SAI_ENABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_DMA));
sahilmgandhi	18:6a4db94011d3	1136
sahilmgandhi	18:6a4db94011d3	1137	/* Enable SAI Tx DMA Request */
sahilmgandhi	18:6a4db94011d3	1138	hsai->Instance->CR1 \|= SAI_xCR1_DMAEN;
sahilmgandhi	18:6a4db94011d3	1139
sahilmgandhi	18:6a4db94011d3	1140	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	1141	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	1142
sahilmgandhi	18:6a4db94011d3	1143	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	1144	}
sahilmgandhi	18:6a4db94011d3	1145	else
sahilmgandhi	18:6a4db94011d3	1146	{
sahilmgandhi	18:6a4db94011d3	1147	return HAL_BUSY;
sahilmgandhi	18:6a4db94011d3	1148	}
sahilmgandhi	18:6a4db94011d3	1149	}
sahilmgandhi	18:6a4db94011d3	1150
sahilmgandhi	18:6a4db94011d3	1151	/**
sahilmgandhi	18:6a4db94011d3	1152	* @brief Receive an amount of data in non-blocking mode with DMA.
sahilmgandhi	18:6a4db94011d3	1153	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1154	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1155	* @param pData: Pointer to data buffer
sahilmgandhi	18:6a4db94011d3	1156	* @param Size: Amount of data to be received
sahilmgandhi	18:6a4db94011d3	1157	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	1158	*/
sahilmgandhi	18:6a4db94011d3	1159	HAL_StatusTypeDef HAL_SAI_Receive_DMA(SAI_HandleTypeDef hsai, uint8_t pData, uint16_t Size)
sahilmgandhi	18:6a4db94011d3	1160	{
sahilmgandhi	18:6a4db94011d3	1161	if((pData == NULL) \|\| (Size == 0))
sahilmgandhi	18:6a4db94011d3	1162	{
sahilmgandhi	18:6a4db94011d3	1163	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1164	}
sahilmgandhi	18:6a4db94011d3	1165
sahilmgandhi	18:6a4db94011d3	1166	if(hsai->State == HAL_SAI_STATE_READY)
sahilmgandhi	18:6a4db94011d3	1167	{
sahilmgandhi	18:6a4db94011d3	1168	/* Process Locked */
sahilmgandhi	18:6a4db94011d3	1169	__HAL_LOCK(hsai);
sahilmgandhi	18:6a4db94011d3	1170
sahilmgandhi	18:6a4db94011d3	1171	hsai->pBuffPtr = pData;
sahilmgandhi	18:6a4db94011d3	1172	hsai->XferSize = Size;
sahilmgandhi	18:6a4db94011d3	1173	hsai->XferCount = Size;
sahilmgandhi	18:6a4db94011d3	1174	hsai->ErrorCode = HAL_SAI_ERROR_NONE;
sahilmgandhi	18:6a4db94011d3	1175	hsai->State = HAL_SAI_STATE_BUSY_RX;
sahilmgandhi	18:6a4db94011d3	1176
sahilmgandhi	18:6a4db94011d3	1177	/* Set the SAI Rx DMA Half transfer complete callback */
sahilmgandhi	18:6a4db94011d3	1178	hsai->hdmarx->XferHalfCpltCallback = SAI_DMARxHalfCplt;
sahilmgandhi	18:6a4db94011d3	1179
sahilmgandhi	18:6a4db94011d3	1180	/* Set the SAI Rx DMA transfer complete callback */
sahilmgandhi	18:6a4db94011d3	1181	hsai->hdmarx->XferCpltCallback = SAI_DMARxCplt;
sahilmgandhi	18:6a4db94011d3	1182
sahilmgandhi	18:6a4db94011d3	1183	/* Set the DMA error callback */
sahilmgandhi	18:6a4db94011d3	1184	hsai->hdmarx->XferErrorCallback = SAI_DMAError;
sahilmgandhi	18:6a4db94011d3	1185
sahilmgandhi	18:6a4db94011d3	1186	/* Set the DMA Rx abort callback */
sahilmgandhi	18:6a4db94011d3	1187	hsai->hdmarx->XferAbortCallback = NULL;
sahilmgandhi	18:6a4db94011d3	1188
sahilmgandhi	18:6a4db94011d3	1189	/* Enable the Rx DMA Stream */
sahilmgandhi	18:6a4db94011d3	1190	if(HAL_DMA_Start_IT(hsai->hdmarx, (uint32_t)&hsai->Instance->DR, (uint32_t)hsai->pBuffPtr, hsai->XferSize) != HAL_OK)
sahilmgandhi	18:6a4db94011d3	1191	{
sahilmgandhi	18:6a4db94011d3	1192	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	1193	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1194	}
sahilmgandhi	18:6a4db94011d3	1195
sahilmgandhi	18:6a4db94011d3	1196	/* Check if the SAI is already enabled */
sahilmgandhi	18:6a4db94011d3	1197	if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET)
sahilmgandhi	18:6a4db94011d3	1198	{
sahilmgandhi	18:6a4db94011d3	1199	/* Enable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	1200	__HAL_SAI_ENABLE(hsai);
sahilmgandhi	18:6a4db94011d3	1201	}
sahilmgandhi	18:6a4db94011d3	1202
sahilmgandhi	18:6a4db94011d3	1203	/* Enable the interrupts for error handling */
sahilmgandhi	18:6a4db94011d3	1204	__HAL_SAI_ENABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_DMA));
sahilmgandhi	18:6a4db94011d3	1205
sahilmgandhi	18:6a4db94011d3	1206	/* Enable SAI Rx DMA Request */
sahilmgandhi	18:6a4db94011d3	1207	hsai->Instance->CR1 \|= SAI_xCR1_DMAEN;
sahilmgandhi	18:6a4db94011d3	1208
sahilmgandhi	18:6a4db94011d3	1209	/* Process Unlocked */
sahilmgandhi	18:6a4db94011d3	1210	__HAL_UNLOCK(hsai);
sahilmgandhi	18:6a4db94011d3	1211
sahilmgandhi	18:6a4db94011d3	1212	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	1213	}
sahilmgandhi	18:6a4db94011d3	1214	else
sahilmgandhi	18:6a4db94011d3	1215	{
sahilmgandhi	18:6a4db94011d3	1216	return HAL_BUSY;
sahilmgandhi	18:6a4db94011d3	1217	}
sahilmgandhi	18:6a4db94011d3	1218	}
sahilmgandhi	18:6a4db94011d3	1219
sahilmgandhi	18:6a4db94011d3	1220	/**
sahilmgandhi	18:6a4db94011d3	1221	* @brief Enable the Tx mute mode.
sahilmgandhi	18:6a4db94011d3	1222	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1223	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1224	* @param val: value sent during the mute @ref SAI_Block_Mute_Value
sahilmgandhi	18:6a4db94011d3	1225	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	1226	*/
sahilmgandhi	18:6a4db94011d3	1227	HAL_StatusTypeDef HAL_SAI_EnableTxMuteMode(SAI_HandleTypeDef *hsai, uint16_t val)
sahilmgandhi	18:6a4db94011d3	1228	{
sahilmgandhi	18:6a4db94011d3	1229	assert_param(IS_SAI_BLOCK_MUTE_VALUE(val));
sahilmgandhi	18:6a4db94011d3	1230
sahilmgandhi	18:6a4db94011d3	1231	if(hsai->State != HAL_SAI_STATE_RESET)
sahilmgandhi	18:6a4db94011d3	1232	{
sahilmgandhi	18:6a4db94011d3	1233	CLEAR_BIT(hsai->Instance->CR2, SAI_xCR2_MUTEVAL \| SAI_xCR2_MUTE);
sahilmgandhi	18:6a4db94011d3	1234	SET_BIT(hsai->Instance->CR2, SAI_xCR2_MUTE \| val);
sahilmgandhi	18:6a4db94011d3	1235	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	1236	}
sahilmgandhi	18:6a4db94011d3	1237	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1238	}
sahilmgandhi	18:6a4db94011d3	1239
sahilmgandhi	18:6a4db94011d3	1240	/**
sahilmgandhi	18:6a4db94011d3	1241	* @brief Disable the Tx mute mode.
sahilmgandhi	18:6a4db94011d3	1242	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1243	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1244	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	1245	*/
sahilmgandhi	18:6a4db94011d3	1246	HAL_StatusTypeDef HAL_SAI_DisableTxMuteMode(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1247	{
sahilmgandhi	18:6a4db94011d3	1248	if(hsai->State != HAL_SAI_STATE_RESET)
sahilmgandhi	18:6a4db94011d3	1249	{
sahilmgandhi	18:6a4db94011d3	1250	CLEAR_BIT(hsai->Instance->CR2, SAI_xCR2_MUTEVAL \| SAI_xCR2_MUTE);
sahilmgandhi	18:6a4db94011d3	1251	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	1252	}
sahilmgandhi	18:6a4db94011d3	1253	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1254	}
sahilmgandhi	18:6a4db94011d3	1255
sahilmgandhi	18:6a4db94011d3	1256	/**
sahilmgandhi	18:6a4db94011d3	1257	* @brief Enable the Rx mute detection.
sahilmgandhi	18:6a4db94011d3	1258	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1259	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1260	* @param callback: function called when the mute is detected.
sahilmgandhi	18:6a4db94011d3	1261	* @param counter: number a data before mute detection max 63.
sahilmgandhi	18:6a4db94011d3	1262	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	1263	*/
sahilmgandhi	18:6a4db94011d3	1264	HAL_StatusTypeDef HAL_SAI_EnableRxMuteMode(SAI_HandleTypeDef *hsai, SAIcallback callback, uint16_t counter)
sahilmgandhi	18:6a4db94011d3	1265	{
sahilmgandhi	18:6a4db94011d3	1266	assert_param(IS_SAI_BLOCK_MUTE_COUNTER(counter));
sahilmgandhi	18:6a4db94011d3	1267
sahilmgandhi	18:6a4db94011d3	1268	if(hsai->State != HAL_SAI_STATE_RESET)
sahilmgandhi	18:6a4db94011d3	1269	{
sahilmgandhi	18:6a4db94011d3	1270	/* set the mute counter */
sahilmgandhi	18:6a4db94011d3	1271	CLEAR_BIT(hsai->Instance->CR2, SAI_xCR2_MUTECNT);
sahilmgandhi	18:6a4db94011d3	1272	SET_BIT(hsai->Instance->CR2, (uint32_t)((uint32_t)counter << SAI_xCR2_MUTECNT_OFFSET));
sahilmgandhi	18:6a4db94011d3	1273	hsai->mutecallback = callback;
sahilmgandhi	18:6a4db94011d3	1274	/* enable the IT interrupt */
sahilmgandhi	18:6a4db94011d3	1275	__HAL_SAI_ENABLE_IT(hsai, SAI_IT_MUTEDET);
sahilmgandhi	18:6a4db94011d3	1276	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	1277	}
sahilmgandhi	18:6a4db94011d3	1278	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1279	}
sahilmgandhi	18:6a4db94011d3	1280
sahilmgandhi	18:6a4db94011d3	1281	/**
sahilmgandhi	18:6a4db94011d3	1282	* @brief Disable the Rx mute detection.
sahilmgandhi	18:6a4db94011d3	1283	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1284	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1285	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	1286	*/
sahilmgandhi	18:6a4db94011d3	1287	HAL_StatusTypeDef HAL_SAI_DisableRxMuteMode(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1288	{
sahilmgandhi	18:6a4db94011d3	1289	if(hsai->State != HAL_SAI_STATE_RESET)
sahilmgandhi	18:6a4db94011d3	1290	{
sahilmgandhi	18:6a4db94011d3	1291	/* set the mutecallback to NULL */
sahilmgandhi	18:6a4db94011d3	1292	hsai->mutecallback = (SAIcallback)NULL;
sahilmgandhi	18:6a4db94011d3	1293	/* enable the IT interrupt */
sahilmgandhi	18:6a4db94011d3	1294	__HAL_SAI_DISABLE_IT(hsai, SAI_IT_MUTEDET);
sahilmgandhi	18:6a4db94011d3	1295	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	1296	}
sahilmgandhi	18:6a4db94011d3	1297	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1298	}
sahilmgandhi	18:6a4db94011d3	1299
sahilmgandhi	18:6a4db94011d3	1300	/**
sahilmgandhi	18:6a4db94011d3	1301	* @brief Handle SAI interrupt request.
sahilmgandhi	18:6a4db94011d3	1302	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1303	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1304	* @retval None
sahilmgandhi	18:6a4db94011d3	1305	*/
sahilmgandhi	18:6a4db94011d3	1306	void HAL_SAI_IRQHandler(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1307	{
sahilmgandhi	18:6a4db94011d3	1308	if(hsai->State != HAL_SAI_STATE_RESET)
sahilmgandhi	18:6a4db94011d3	1309	{
sahilmgandhi	18:6a4db94011d3	1310	uint32_t itflags = hsai->Instance->SR;
sahilmgandhi	18:6a4db94011d3	1311	uint32_t itsources = hsai->Instance->IMR;
sahilmgandhi	18:6a4db94011d3	1312	uint32_t cr1config = hsai->Instance->CR1;
sahilmgandhi	18:6a4db94011d3	1313	uint32_t tmperror;
sahilmgandhi	18:6a4db94011d3	1314
sahilmgandhi	18:6a4db94011d3	1315	/* SAI Fifo request interrupt occured ------------------------------------*/
sahilmgandhi	18:6a4db94011d3	1316	if(((itflags & SAI_xSR_FREQ) == SAI_xSR_FREQ) && ((itsources & SAI_IT_FREQ) == SAI_IT_FREQ))
sahilmgandhi	18:6a4db94011d3	1317	{
sahilmgandhi	18:6a4db94011d3	1318	hsai->InterruptServiceRoutine(hsai);
sahilmgandhi	18:6a4db94011d3	1319	}
sahilmgandhi	18:6a4db94011d3	1320	/* SAI Overrun error interrupt occurred ----------------------------------*/
sahilmgandhi	18:6a4db94011d3	1321	else if(((itflags & SAI_FLAG_OVRUDR) == SAI_FLAG_OVRUDR) && ((itsources & SAI_IT_OVRUDR) == SAI_IT_OVRUDR))
sahilmgandhi	18:6a4db94011d3	1322	{
sahilmgandhi	18:6a4db94011d3	1323	/* Clear the SAI Overrun flag */
sahilmgandhi	18:6a4db94011d3	1324	__HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_OVRUDR);
sahilmgandhi	18:6a4db94011d3	1325
sahilmgandhi	18:6a4db94011d3	1326	/* Get the SAI error code */
sahilmgandhi	18:6a4db94011d3	1327	tmperror = ((hsai->State == HAL_SAI_STATE_BUSY_RX) ? HAL_SAI_ERROR_OVR : HAL_SAI_ERROR_UDR);
sahilmgandhi	18:6a4db94011d3	1328
sahilmgandhi	18:6a4db94011d3	1329	/* Change the SAI error code */
sahilmgandhi	18:6a4db94011d3	1330	hsai->ErrorCode \|= tmperror;
sahilmgandhi	18:6a4db94011d3	1331
sahilmgandhi	18:6a4db94011d3	1332	/* the transfer is not stopped, we will forward the information to the user and we let the user decide what needs to be done */
sahilmgandhi	18:6a4db94011d3	1333	HAL_SAI_ErrorCallback(hsai);
sahilmgandhi	18:6a4db94011d3	1334	}
sahilmgandhi	18:6a4db94011d3	1335	/* SAI mutedet interrupt occurred ----------------------------------*/
sahilmgandhi	18:6a4db94011d3	1336	else if(((itflags & SAI_FLAG_MUTEDET) == SAI_FLAG_MUTEDET) && ((itsources & SAI_IT_MUTEDET) == SAI_IT_MUTEDET))
sahilmgandhi	18:6a4db94011d3	1337	{
sahilmgandhi	18:6a4db94011d3	1338	/* Clear the SAI mutedet flag */
sahilmgandhi	18:6a4db94011d3	1339	__HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_MUTEDET);
sahilmgandhi	18:6a4db94011d3	1340
sahilmgandhi	18:6a4db94011d3	1341	/* call the call back function */
sahilmgandhi	18:6a4db94011d3	1342	if(hsai->mutecallback != (SAIcallback)NULL)
sahilmgandhi	18:6a4db94011d3	1343	{
sahilmgandhi	18:6a4db94011d3	1344	/* inform the user that an RX mute event has been detected */
sahilmgandhi	18:6a4db94011d3	1345	hsai->mutecallback();
sahilmgandhi	18:6a4db94011d3	1346	}
sahilmgandhi	18:6a4db94011d3	1347	}
sahilmgandhi	18:6a4db94011d3	1348	/* SAI AFSDET interrupt occurred ----------------------------------*/
sahilmgandhi	18:6a4db94011d3	1349	else if(((itflags & SAI_FLAG_AFSDET) == SAI_FLAG_AFSDET) && ((itsources & SAI_IT_AFSDET) == SAI_IT_AFSDET))
sahilmgandhi	18:6a4db94011d3	1350	{
sahilmgandhi	18:6a4db94011d3	1351	/* Change the SAI error code */
sahilmgandhi	18:6a4db94011d3	1352	hsai->ErrorCode \|= HAL_SAI_ERROR_AFSDET;
sahilmgandhi	18:6a4db94011d3	1353
sahilmgandhi	18:6a4db94011d3	1354	/* Check SAI DMA is enabled or not */
sahilmgandhi	18:6a4db94011d3	1355	if((cr1config & SAI_xCR1_DMAEN) == SAI_xCR1_DMAEN)
sahilmgandhi	18:6a4db94011d3	1356	{
sahilmgandhi	18:6a4db94011d3	1357	/* Abort the SAI DMA Streams */
sahilmgandhi	18:6a4db94011d3	1358	if(hsai->hdmatx != NULL)
sahilmgandhi	18:6a4db94011d3	1359	{
sahilmgandhi	18:6a4db94011d3	1360	/* Set the DMA Tx abort callback */
sahilmgandhi	18:6a4db94011d3	1361	hsai->hdmatx->XferAbortCallback = SAI_DMAAbort;
sahilmgandhi	18:6a4db94011d3	1362
sahilmgandhi	18:6a4db94011d3	1363	/* Abort DMA in IT mode */
sahilmgandhi	18:6a4db94011d3	1364	HAL_DMA_Abort_IT(hsai->hdmatx);
sahilmgandhi	18:6a4db94011d3	1365	}
sahilmgandhi	18:6a4db94011d3	1366	else if(hsai->hdmarx != NULL)
sahilmgandhi	18:6a4db94011d3	1367	{
sahilmgandhi	18:6a4db94011d3	1368	/* Set the DMA Rx abort callback */
sahilmgandhi	18:6a4db94011d3	1369	hsai->hdmarx->XferAbortCallback = SAI_DMAAbort;
sahilmgandhi	18:6a4db94011d3	1370
sahilmgandhi	18:6a4db94011d3	1371	/* Abort DMA in IT mode */
sahilmgandhi	18:6a4db94011d3	1372	HAL_DMA_Abort_IT(hsai->hdmarx);
sahilmgandhi	18:6a4db94011d3	1373	}
sahilmgandhi	18:6a4db94011d3	1374	}
sahilmgandhi	18:6a4db94011d3	1375	else
sahilmgandhi	18:6a4db94011d3	1376	{
sahilmgandhi	18:6a4db94011d3	1377	/* Abort SAI */
sahilmgandhi	18:6a4db94011d3	1378	HAL_SAI_Abort(hsai);
sahilmgandhi	18:6a4db94011d3	1379
sahilmgandhi	18:6a4db94011d3	1380	/* Set error callback */
sahilmgandhi	18:6a4db94011d3	1381	HAL_SAI_ErrorCallback(hsai);
sahilmgandhi	18:6a4db94011d3	1382	}
sahilmgandhi	18:6a4db94011d3	1383	}
sahilmgandhi	18:6a4db94011d3	1384	/* SAI LFSDET interrupt occurred ----------------------------------*/
sahilmgandhi	18:6a4db94011d3	1385	else if(((itflags & SAI_FLAG_LFSDET) == SAI_FLAG_LFSDET) && ((itsources & SAI_IT_LFSDET) == SAI_IT_LFSDET))
sahilmgandhi	18:6a4db94011d3	1386	{
sahilmgandhi	18:6a4db94011d3	1387	/* Change the SAI error code */
sahilmgandhi	18:6a4db94011d3	1388	hsai->ErrorCode \|= HAL_SAI_ERROR_LFSDET;
sahilmgandhi	18:6a4db94011d3	1389
sahilmgandhi	18:6a4db94011d3	1390	/* Check SAI DMA is enabled or not */
sahilmgandhi	18:6a4db94011d3	1391	if((cr1config & SAI_xCR1_DMAEN) == SAI_xCR1_DMAEN)
sahilmgandhi	18:6a4db94011d3	1392	{
sahilmgandhi	18:6a4db94011d3	1393	/* Abort the SAI DMA Streams */
sahilmgandhi	18:6a4db94011d3	1394	if(hsai->hdmatx != NULL)
sahilmgandhi	18:6a4db94011d3	1395	{
sahilmgandhi	18:6a4db94011d3	1396	/* Set the DMA Tx abort callback */
sahilmgandhi	18:6a4db94011d3	1397	hsai->hdmatx->XferAbortCallback = SAI_DMAAbort;
sahilmgandhi	18:6a4db94011d3	1398
sahilmgandhi	18:6a4db94011d3	1399	/* Abort DMA in IT mode */
sahilmgandhi	18:6a4db94011d3	1400	HAL_DMA_Abort_IT(hsai->hdmatx);
sahilmgandhi	18:6a4db94011d3	1401	}
sahilmgandhi	18:6a4db94011d3	1402	else if(hsai->hdmarx != NULL)
sahilmgandhi	18:6a4db94011d3	1403	{
sahilmgandhi	18:6a4db94011d3	1404	/* Set the DMA Rx abort callback */
sahilmgandhi	18:6a4db94011d3	1405	hsai->hdmarx->XferAbortCallback = SAI_DMAAbort;
sahilmgandhi	18:6a4db94011d3	1406
sahilmgandhi	18:6a4db94011d3	1407	/* Abort DMA in IT mode */
sahilmgandhi	18:6a4db94011d3	1408	HAL_DMA_Abort_IT(hsai->hdmarx);
sahilmgandhi	18:6a4db94011d3	1409	}
sahilmgandhi	18:6a4db94011d3	1410	}
sahilmgandhi	18:6a4db94011d3	1411	else
sahilmgandhi	18:6a4db94011d3	1412	{
sahilmgandhi	18:6a4db94011d3	1413	/* Abort SAI */
sahilmgandhi	18:6a4db94011d3	1414	HAL_SAI_Abort(hsai);
sahilmgandhi	18:6a4db94011d3	1415
sahilmgandhi	18:6a4db94011d3	1416	/* Set error callback */
sahilmgandhi	18:6a4db94011d3	1417	HAL_SAI_ErrorCallback(hsai);
sahilmgandhi	18:6a4db94011d3	1418	}
sahilmgandhi	18:6a4db94011d3	1419	}
sahilmgandhi	18:6a4db94011d3	1420	/* SAI WCKCFG interrupt occurred ----------------------------------*/
sahilmgandhi	18:6a4db94011d3	1421	else if(((itflags & SAI_FLAG_WCKCFG) == SAI_FLAG_WCKCFG) && ((itsources & SAI_IT_WCKCFG) == SAI_IT_WCKCFG))
sahilmgandhi	18:6a4db94011d3	1422	{
sahilmgandhi	18:6a4db94011d3	1423	/* Change the SAI error code */
sahilmgandhi	18:6a4db94011d3	1424	hsai->ErrorCode \|= HAL_SAI_ERROR_WCKCFG;
sahilmgandhi	18:6a4db94011d3	1425
sahilmgandhi	18:6a4db94011d3	1426	/* Check SAI DMA is enabled or not */
sahilmgandhi	18:6a4db94011d3	1427	if((cr1config & SAI_xCR1_DMAEN) == SAI_xCR1_DMAEN)
sahilmgandhi	18:6a4db94011d3	1428	{
sahilmgandhi	18:6a4db94011d3	1429	/* Abort the SAI DMA Streams */
sahilmgandhi	18:6a4db94011d3	1430	if(hsai->hdmatx != NULL)
sahilmgandhi	18:6a4db94011d3	1431	{
sahilmgandhi	18:6a4db94011d3	1432	/* Set the DMA Tx abort callback */
sahilmgandhi	18:6a4db94011d3	1433	hsai->hdmatx->XferAbortCallback = SAI_DMAAbort;
sahilmgandhi	18:6a4db94011d3	1434
sahilmgandhi	18:6a4db94011d3	1435	/* Abort DMA in IT mode */
sahilmgandhi	18:6a4db94011d3	1436	HAL_DMA_Abort_IT(hsai->hdmatx);
sahilmgandhi	18:6a4db94011d3	1437	}
sahilmgandhi	18:6a4db94011d3	1438	else if(hsai->hdmarx != NULL)
sahilmgandhi	18:6a4db94011d3	1439	{
sahilmgandhi	18:6a4db94011d3	1440	/* Set the DMA Rx abort callback */
sahilmgandhi	18:6a4db94011d3	1441	hsai->hdmarx->XferAbortCallback = SAI_DMAAbort;
sahilmgandhi	18:6a4db94011d3	1442
sahilmgandhi	18:6a4db94011d3	1443	/* Abort DMA in IT mode */
sahilmgandhi	18:6a4db94011d3	1444	HAL_DMA_Abort_IT(hsai->hdmarx);
sahilmgandhi	18:6a4db94011d3	1445	}
sahilmgandhi	18:6a4db94011d3	1446	}
sahilmgandhi	18:6a4db94011d3	1447	else
sahilmgandhi	18:6a4db94011d3	1448	{
sahilmgandhi	18:6a4db94011d3	1449	/* If WCKCFG occurs, SAI audio block is automatically disabled */
sahilmgandhi	18:6a4db94011d3	1450	/* Disable all interrupts and clear all flags */
sahilmgandhi	18:6a4db94011d3	1451	hsai->Instance->IMR = 0U;
sahilmgandhi	18:6a4db94011d3	1452	hsai->Instance->CLRFR = 0xFFFFFFFFU;
sahilmgandhi	18:6a4db94011d3	1453
sahilmgandhi	18:6a4db94011d3	1454	/* Set the SAI state to ready to be able to start again the process */
sahilmgandhi	18:6a4db94011d3	1455	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	1456
sahilmgandhi	18:6a4db94011d3	1457	/* Initialize XferCount */
sahilmgandhi	18:6a4db94011d3	1458	hsai->XferCount = 0U;
sahilmgandhi	18:6a4db94011d3	1459
sahilmgandhi	18:6a4db94011d3	1460	/* SAI error Callback */
sahilmgandhi	18:6a4db94011d3	1461	HAL_SAI_ErrorCallback(hsai);
sahilmgandhi	18:6a4db94011d3	1462	}
sahilmgandhi	18:6a4db94011d3	1463	}
sahilmgandhi	18:6a4db94011d3	1464	/* SAI CNRDY interrupt occurred ----------------------------------*/
sahilmgandhi	18:6a4db94011d3	1465	else if(((itflags & SAI_FLAG_CNRDY) == SAI_FLAG_CNRDY) && ((itsources & SAI_IT_CNRDY) == SAI_IT_CNRDY))
sahilmgandhi	18:6a4db94011d3	1466	{
sahilmgandhi	18:6a4db94011d3	1467	/* Clear the SAI CNRDY flag */
sahilmgandhi	18:6a4db94011d3	1468	__HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_CNRDY);
sahilmgandhi	18:6a4db94011d3	1469
sahilmgandhi	18:6a4db94011d3	1470	/* Change the SAI error code */
sahilmgandhi	18:6a4db94011d3	1471	hsai->ErrorCode \|= HAL_SAI_ERROR_CNREADY;
sahilmgandhi	18:6a4db94011d3	1472
sahilmgandhi	18:6a4db94011d3	1473	/* the transfer is not stopped, we will forward the information to the user and we let the user decide what needs to be done */
sahilmgandhi	18:6a4db94011d3	1474	HAL_SAI_ErrorCallback(hsai);
sahilmgandhi	18:6a4db94011d3	1475	}
sahilmgandhi	18:6a4db94011d3	1476	else
sahilmgandhi	18:6a4db94011d3	1477	{
sahilmgandhi	18:6a4db94011d3	1478	/* Nothing to do */
sahilmgandhi	18:6a4db94011d3	1479	}
sahilmgandhi	18:6a4db94011d3	1480	}
sahilmgandhi	18:6a4db94011d3	1481	}
sahilmgandhi	18:6a4db94011d3	1482
sahilmgandhi	18:6a4db94011d3	1483	/**
sahilmgandhi	18:6a4db94011d3	1484	* @brief Tx Transfer completed callback.
sahilmgandhi	18:6a4db94011d3	1485	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1486	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1487	* @retval None
sahilmgandhi	18:6a4db94011d3	1488	*/
sahilmgandhi	18:6a4db94011d3	1489	__weak void HAL_SAI_TxCpltCallback(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1490	{
sahilmgandhi	18:6a4db94011d3	1491	/* Prevent unused argument(s) compilation warning */
sahilmgandhi	18:6a4db94011d3	1492	UNUSED(hsai);
sahilmgandhi	18:6a4db94011d3	1493
sahilmgandhi	18:6a4db94011d3	1494	/* NOTE : This function should not be modified, when the callback is needed,
sahilmgandhi	18:6a4db94011d3	1495	the HAL_SAI_TxCpltCallback could be implemented in the user file
sahilmgandhi	18:6a4db94011d3	1496	*/
sahilmgandhi	18:6a4db94011d3	1497	}
sahilmgandhi	18:6a4db94011d3	1498
sahilmgandhi	18:6a4db94011d3	1499	/**
sahilmgandhi	18:6a4db94011d3	1500	* @brief Tx Transfer Half completed callback.
sahilmgandhi	18:6a4db94011d3	1501	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1502	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1503	* @retval None
sahilmgandhi	18:6a4db94011d3	1504	*/
sahilmgandhi	18:6a4db94011d3	1505	__weak void HAL_SAI_TxHalfCpltCallback(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1506	{
sahilmgandhi	18:6a4db94011d3	1507	/* Prevent unused argument(s) compilation warning */
sahilmgandhi	18:6a4db94011d3	1508	UNUSED(hsai);
sahilmgandhi	18:6a4db94011d3	1509
sahilmgandhi	18:6a4db94011d3	1510	/* NOTE : This function should not be modified, when the callback is needed,
sahilmgandhi	18:6a4db94011d3	1511	the HAL_SAI_TxHalfCpltCallback could be implemented in the user file
sahilmgandhi	18:6a4db94011d3	1512	*/
sahilmgandhi	18:6a4db94011d3	1513	}
sahilmgandhi	18:6a4db94011d3	1514
sahilmgandhi	18:6a4db94011d3	1515	/**
sahilmgandhi	18:6a4db94011d3	1516	* @brief Rx Transfer completed callback.
sahilmgandhi	18:6a4db94011d3	1517	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1518	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1519	* @retval None
sahilmgandhi	18:6a4db94011d3	1520	*/
sahilmgandhi	18:6a4db94011d3	1521	__weak void HAL_SAI_RxCpltCallback(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1522	{
sahilmgandhi	18:6a4db94011d3	1523	/* Prevent unused argument(s) compilation warning */
sahilmgandhi	18:6a4db94011d3	1524	UNUSED(hsai);
sahilmgandhi	18:6a4db94011d3	1525
sahilmgandhi	18:6a4db94011d3	1526	/* NOTE : This function should not be modified, when the callback is needed,
sahilmgandhi	18:6a4db94011d3	1527	the HAL_SAI_RxCpltCallback could be implemented in the user file
sahilmgandhi	18:6a4db94011d3	1528	*/
sahilmgandhi	18:6a4db94011d3	1529	}
sahilmgandhi	18:6a4db94011d3	1530
sahilmgandhi	18:6a4db94011d3	1531	/**
sahilmgandhi	18:6a4db94011d3	1532	* @brief Rx Transfer half completed callback.
sahilmgandhi	18:6a4db94011d3	1533	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1534	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1535	* @retval None
sahilmgandhi	18:6a4db94011d3	1536	*/
sahilmgandhi	18:6a4db94011d3	1537	__weak void HAL_SAI_RxHalfCpltCallback(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1538	{
sahilmgandhi	18:6a4db94011d3	1539	/* Prevent unused argument(s) compilation warning */
sahilmgandhi	18:6a4db94011d3	1540	UNUSED(hsai);
sahilmgandhi	18:6a4db94011d3	1541
sahilmgandhi	18:6a4db94011d3	1542	/* NOTE : This function should not be modified, when the callback is needed,
sahilmgandhi	18:6a4db94011d3	1543	the HAL_SAI_RxHalfCpltCallback could be implemented in the user file
sahilmgandhi	18:6a4db94011d3	1544	*/
sahilmgandhi	18:6a4db94011d3	1545	}
sahilmgandhi	18:6a4db94011d3	1546
sahilmgandhi	18:6a4db94011d3	1547	/**
sahilmgandhi	18:6a4db94011d3	1548	* @brief SAI error callback.
sahilmgandhi	18:6a4db94011d3	1549	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1550	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1551	* @retval None
sahilmgandhi	18:6a4db94011d3	1552	*/
sahilmgandhi	18:6a4db94011d3	1553	__weak void HAL_SAI_ErrorCallback(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1554	{
sahilmgandhi	18:6a4db94011d3	1555	/* Prevent unused argument(s) compilation warning */
sahilmgandhi	18:6a4db94011d3	1556	UNUSED(hsai);
sahilmgandhi	18:6a4db94011d3	1557
sahilmgandhi	18:6a4db94011d3	1558	/* NOTE : This function should not be modified, when the callback is needed,
sahilmgandhi	18:6a4db94011d3	1559	the HAL_SAI_ErrorCallback could be implemented in the user file
sahilmgandhi	18:6a4db94011d3	1560	*/
sahilmgandhi	18:6a4db94011d3	1561	}
sahilmgandhi	18:6a4db94011d3	1562
sahilmgandhi	18:6a4db94011d3	1563	/**
sahilmgandhi	18:6a4db94011d3	1564	* @}
sahilmgandhi	18:6a4db94011d3	1565	*/
sahilmgandhi	18:6a4db94011d3	1566
sahilmgandhi	18:6a4db94011d3	1567
sahilmgandhi	18:6a4db94011d3	1568	/** @defgroup SAI_Exported_Functions_Group3 Peripheral State functions
sahilmgandhi	18:6a4db94011d3	1569	* @brief Peripheral State functions
sahilmgandhi	18:6a4db94011d3	1570	*
sahilmgandhi	18:6a4db94011d3	1571	@verbatim
sahilmgandhi	18:6a4db94011d3	1572	===============================================================================
sahilmgandhi	18:6a4db94011d3	1573	##### Peripheral State and Errors functions #####
sahilmgandhi	18:6a4db94011d3	1574	===============================================================================
sahilmgandhi	18:6a4db94011d3	1575	[..]
sahilmgandhi	18:6a4db94011d3	1576	This subsection permits to get in run-time the status of the peripheral
sahilmgandhi	18:6a4db94011d3	1577	and the data flow.
sahilmgandhi	18:6a4db94011d3	1578
sahilmgandhi	18:6a4db94011d3	1579	@endverbatim
sahilmgandhi	18:6a4db94011d3	1580	* @{
sahilmgandhi	18:6a4db94011d3	1581	*/
sahilmgandhi	18:6a4db94011d3	1582
sahilmgandhi	18:6a4db94011d3	1583	/**
sahilmgandhi	18:6a4db94011d3	1584	* @brief Return the SAI handle state.
sahilmgandhi	18:6a4db94011d3	1585	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1586	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1587	* @retval HAL state
sahilmgandhi	18:6a4db94011d3	1588	*/
sahilmgandhi	18:6a4db94011d3	1589	HAL_SAI_StateTypeDef HAL_SAI_GetState(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1590	{
sahilmgandhi	18:6a4db94011d3	1591	return hsai->State;
sahilmgandhi	18:6a4db94011d3	1592	}
sahilmgandhi	18:6a4db94011d3	1593
sahilmgandhi	18:6a4db94011d3	1594	/**
sahilmgandhi	18:6a4db94011d3	1595	* @brief Return the SAI error code.
sahilmgandhi	18:6a4db94011d3	1596	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1597	* the configuration information for the specified SAI Block.
sahilmgandhi	18:6a4db94011d3	1598	* @retval SAI Error Code
sahilmgandhi	18:6a4db94011d3	1599	*/
sahilmgandhi	18:6a4db94011d3	1600	uint32_t HAL_SAI_GetError(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1601	{
sahilmgandhi	18:6a4db94011d3	1602	return hsai->ErrorCode;
sahilmgandhi	18:6a4db94011d3	1603	}
sahilmgandhi	18:6a4db94011d3	1604	/**
sahilmgandhi	18:6a4db94011d3	1605	* @}
sahilmgandhi	18:6a4db94011d3	1606	*/
sahilmgandhi	18:6a4db94011d3	1607
sahilmgandhi	18:6a4db94011d3	1608	/**
sahilmgandhi	18:6a4db94011d3	1609	* @}
sahilmgandhi	18:6a4db94011d3	1610	*/
sahilmgandhi	18:6a4db94011d3	1611
sahilmgandhi	18:6a4db94011d3	1612	/** @addtogroup SAI_Private_Functions
sahilmgandhi	18:6a4db94011d3	1613	* @brief Private functions
sahilmgandhi	18:6a4db94011d3	1614	* @{
sahilmgandhi	18:6a4db94011d3	1615	*/
sahilmgandhi	18:6a4db94011d3	1616
sahilmgandhi	18:6a4db94011d3	1617	/**
sahilmgandhi	18:6a4db94011d3	1618	* @brief Initialize the SAI I2S protocol according to the specified parameters
sahilmgandhi	18:6a4db94011d3	1619	* in the SAI_InitTypeDef and create the associated handle.
sahilmgandhi	18:6a4db94011d3	1620	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1621	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1622	* @param protocol: one of the supported protocol.
sahilmgandhi	18:6a4db94011d3	1623	* @param datasize: one of the supported datasize @ref SAI_Protocol_DataSize
sahilmgandhi	18:6a4db94011d3	1624	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1625	* @param nbslot: number of slot minimum value is 2 and max is 16.
sahilmgandhi	18:6a4db94011d3	1626	* the value must be a multiple of 2.
sahilmgandhi	18:6a4db94011d3	1627	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	1628	*/
sahilmgandhi	18:6a4db94011d3	1629	static HAL_StatusTypeDef SAI_InitI2S(SAI_HandleTypeDef *hsai, uint32_t protocol, uint32_t datasize, uint32_t nbslot)
sahilmgandhi	18:6a4db94011d3	1630	{
sahilmgandhi	18:6a4db94011d3	1631	hsai->Init.Protocol = SAI_FREE_PROTOCOL;
sahilmgandhi	18:6a4db94011d3	1632	hsai->Init.FirstBit = SAI_FIRSTBIT_MSB;
sahilmgandhi	18:6a4db94011d3	1633	/* Compute ClockStrobing according AudioMode */
sahilmgandhi	18:6a4db94011d3	1634	if((hsai->Init.AudioMode == SAI_MODEMASTER_TX) \|\| (hsai->Init.AudioMode == SAI_MODESLAVE_TX))
sahilmgandhi	18:6a4db94011d3	1635	{ /* Transmit */
sahilmgandhi	18:6a4db94011d3	1636	hsai->Init.ClockStrobing = SAI_CLOCKSTROBING_FALLINGEDGE;
sahilmgandhi	18:6a4db94011d3	1637	}
sahilmgandhi	18:6a4db94011d3	1638	else
sahilmgandhi	18:6a4db94011d3	1639	{ /* Receive */
sahilmgandhi	18:6a4db94011d3	1640	hsai->Init.ClockStrobing = SAI_CLOCKSTROBING_RISINGEDGE;
sahilmgandhi	18:6a4db94011d3	1641	}
sahilmgandhi	18:6a4db94011d3	1642	hsai->FrameInit.FSDefinition = SAI_FS_CHANNEL_IDENTIFICATION;
sahilmgandhi	18:6a4db94011d3	1643	hsai->SlotInit.SlotActive = SAI_SLOTACTIVE_ALL;
sahilmgandhi	18:6a4db94011d3	1644	hsai->SlotInit.FirstBitOffset = 0U;
sahilmgandhi	18:6a4db94011d3	1645	hsai->SlotInit.SlotNumber = nbslot;
sahilmgandhi	18:6a4db94011d3	1646
sahilmgandhi	18:6a4db94011d3	1647	/* in IS2 the number of slot must be even */
sahilmgandhi	18:6a4db94011d3	1648	if((nbslot & 0x1U) != 0U)
sahilmgandhi	18:6a4db94011d3	1649	{
sahilmgandhi	18:6a4db94011d3	1650	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1651	}
sahilmgandhi	18:6a4db94011d3	1652
sahilmgandhi	18:6a4db94011d3	1653	switch(protocol)
sahilmgandhi	18:6a4db94011d3	1654	{
sahilmgandhi	18:6a4db94011d3	1655	case SAI_I2S_STANDARD :
sahilmgandhi	18:6a4db94011d3	1656	hsai->FrameInit.FSPolarity = SAI_FS_ACTIVE_LOW;
sahilmgandhi	18:6a4db94011d3	1657	hsai->FrameInit.FSOffset = SAI_FS_BEFOREFIRSTBIT;
sahilmgandhi	18:6a4db94011d3	1658	break;
sahilmgandhi	18:6a4db94011d3	1659	case SAI_I2S_MSBJUSTIFIED :
sahilmgandhi	18:6a4db94011d3	1660	case SAI_I2S_LSBJUSTIFIED :
sahilmgandhi	18:6a4db94011d3	1661	hsai->FrameInit.FSPolarity = SAI_FS_ACTIVE_HIGH;
sahilmgandhi	18:6a4db94011d3	1662	hsai->FrameInit.FSOffset = SAI_FS_FIRSTBIT;
sahilmgandhi	18:6a4db94011d3	1663	break;
sahilmgandhi	18:6a4db94011d3	1664	default :
sahilmgandhi	18:6a4db94011d3	1665	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1666	}
sahilmgandhi	18:6a4db94011d3	1667
sahilmgandhi	18:6a4db94011d3	1668	/* Frame definition */
sahilmgandhi	18:6a4db94011d3	1669	switch(datasize)
sahilmgandhi	18:6a4db94011d3	1670	{
sahilmgandhi	18:6a4db94011d3	1671	case SAI_PROTOCOL_DATASIZE_16BIT:
sahilmgandhi	18:6a4db94011d3	1672	hsai->Init.DataSize = SAI_DATASIZE_16;
sahilmgandhi	18:6a4db94011d3	1673	hsai->FrameInit.FrameLength = 32U*(nbslot/2U);
sahilmgandhi	18:6a4db94011d3	1674	hsai->FrameInit.ActiveFrameLength = 16U*(nbslot/2U);
sahilmgandhi	18:6a4db94011d3	1675	hsai->SlotInit.SlotSize = SAI_SLOTSIZE_16B;
sahilmgandhi	18:6a4db94011d3	1676	break;
sahilmgandhi	18:6a4db94011d3	1677	case SAI_PROTOCOL_DATASIZE_16BITEXTENDED :
sahilmgandhi	18:6a4db94011d3	1678	hsai->Init.DataSize = SAI_DATASIZE_16;
sahilmgandhi	18:6a4db94011d3	1679	hsai->FrameInit.FrameLength = 64U*(nbslot/2U);
sahilmgandhi	18:6a4db94011d3	1680	hsai->FrameInit.ActiveFrameLength = 32U*(nbslot/2U);
sahilmgandhi	18:6a4db94011d3	1681	hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B;
sahilmgandhi	18:6a4db94011d3	1682	break;
sahilmgandhi	18:6a4db94011d3	1683	case SAI_PROTOCOL_DATASIZE_24BIT:
sahilmgandhi	18:6a4db94011d3	1684	hsai->Init.DataSize = SAI_DATASIZE_24;
sahilmgandhi	18:6a4db94011d3	1685	hsai->FrameInit.FrameLength = 64U*(nbslot/2U);
sahilmgandhi	18:6a4db94011d3	1686	hsai->FrameInit.ActiveFrameLength = 32U*(nbslot/2U);
sahilmgandhi	18:6a4db94011d3	1687	hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B;
sahilmgandhi	18:6a4db94011d3	1688	break;
sahilmgandhi	18:6a4db94011d3	1689	case SAI_PROTOCOL_DATASIZE_32BIT:
sahilmgandhi	18:6a4db94011d3	1690	hsai->Init.DataSize = SAI_DATASIZE_32;
sahilmgandhi	18:6a4db94011d3	1691	hsai->FrameInit.FrameLength = 64U*(nbslot/2U);
sahilmgandhi	18:6a4db94011d3	1692	hsai->FrameInit.ActiveFrameLength = 32U*(nbslot/2U);
sahilmgandhi	18:6a4db94011d3	1693	hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B;
sahilmgandhi	18:6a4db94011d3	1694	break;
sahilmgandhi	18:6a4db94011d3	1695	default :
sahilmgandhi	18:6a4db94011d3	1696	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1697	}
sahilmgandhi	18:6a4db94011d3	1698	if(protocol == SAI_I2S_LSBJUSTIFIED)
sahilmgandhi	18:6a4db94011d3	1699	{
sahilmgandhi	18:6a4db94011d3	1700	if (datasize == SAI_PROTOCOL_DATASIZE_16BITEXTENDED)
sahilmgandhi	18:6a4db94011d3	1701	{
sahilmgandhi	18:6a4db94011d3	1702	hsai->SlotInit.FirstBitOffset = 16U;
sahilmgandhi	18:6a4db94011d3	1703	}
sahilmgandhi	18:6a4db94011d3	1704	if (datasize == SAI_PROTOCOL_DATASIZE_24BIT)
sahilmgandhi	18:6a4db94011d3	1705	{
sahilmgandhi	18:6a4db94011d3	1706	hsai->SlotInit.FirstBitOffset = 8U;
sahilmgandhi	18:6a4db94011d3	1707	}
sahilmgandhi	18:6a4db94011d3	1708	}
sahilmgandhi	18:6a4db94011d3	1709	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	1710	}
sahilmgandhi	18:6a4db94011d3	1711
sahilmgandhi	18:6a4db94011d3	1712	/**
sahilmgandhi	18:6a4db94011d3	1713	* @brief Initialize the SAI PCM protocol according to the specified parameters
sahilmgandhi	18:6a4db94011d3	1714	* in the SAI_InitTypeDef and create the associated handle.
sahilmgandhi	18:6a4db94011d3	1715	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1716	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1717	* @param protocol: one of the supported protocol
sahilmgandhi	18:6a4db94011d3	1718	* @param datasize: one of the supported datasize @ref SAI_Protocol_DataSize
sahilmgandhi	18:6a4db94011d3	1719	* @param nbslot: number of slot minimum value is 1 and the max is 16.
sahilmgandhi	18:6a4db94011d3	1720	* @retval HAL status
sahilmgandhi	18:6a4db94011d3	1721	*/
sahilmgandhi	18:6a4db94011d3	1722	static HAL_StatusTypeDef SAI_InitPCM(SAI_HandleTypeDef *hsai, uint32_t protocol, uint32_t datasize, uint32_t nbslot)
sahilmgandhi	18:6a4db94011d3	1723	{
sahilmgandhi	18:6a4db94011d3	1724	hsai->Init.Protocol = SAI_FREE_PROTOCOL;
sahilmgandhi	18:6a4db94011d3	1725	hsai->Init.FirstBit = SAI_FIRSTBIT_MSB;
sahilmgandhi	18:6a4db94011d3	1726	/* Compute ClockStrobing according AudioMode */
sahilmgandhi	18:6a4db94011d3	1727	if((hsai->Init.AudioMode == SAI_MODEMASTER_TX) \|\| (hsai->Init.AudioMode == SAI_MODESLAVE_TX))
sahilmgandhi	18:6a4db94011d3	1728	{ /* Transmit */
sahilmgandhi	18:6a4db94011d3	1729	hsai->Init.ClockStrobing = SAI_CLOCKSTROBING_RISINGEDGE;
sahilmgandhi	18:6a4db94011d3	1730	}
sahilmgandhi	18:6a4db94011d3	1731	else
sahilmgandhi	18:6a4db94011d3	1732	{ /* Receive */
sahilmgandhi	18:6a4db94011d3	1733	hsai->Init.ClockStrobing = SAI_CLOCKSTROBING_FALLINGEDGE;
sahilmgandhi	18:6a4db94011d3	1734	}
sahilmgandhi	18:6a4db94011d3	1735	hsai->FrameInit.FSDefinition = SAI_FS_STARTFRAME;
sahilmgandhi	18:6a4db94011d3	1736	hsai->FrameInit.FSPolarity = SAI_FS_ACTIVE_HIGH;
sahilmgandhi	18:6a4db94011d3	1737	hsai->FrameInit.FSOffset = SAI_FS_BEFOREFIRSTBIT;
sahilmgandhi	18:6a4db94011d3	1738	hsai->SlotInit.FirstBitOffset = 0U;
sahilmgandhi	18:6a4db94011d3	1739	hsai->SlotInit.SlotNumber = nbslot;
sahilmgandhi	18:6a4db94011d3	1740	hsai->SlotInit.SlotActive = SAI_SLOTACTIVE_ALL;
sahilmgandhi	18:6a4db94011d3	1741
sahilmgandhi	18:6a4db94011d3	1742	switch(protocol)
sahilmgandhi	18:6a4db94011d3	1743	{
sahilmgandhi	18:6a4db94011d3	1744	case SAI_PCM_SHORT :
sahilmgandhi	18:6a4db94011d3	1745	hsai->FrameInit.ActiveFrameLength = 1U;
sahilmgandhi	18:6a4db94011d3	1746	break;
sahilmgandhi	18:6a4db94011d3	1747	case SAI_PCM_LONG :
sahilmgandhi	18:6a4db94011d3	1748	hsai->FrameInit.ActiveFrameLength = 13U;
sahilmgandhi	18:6a4db94011d3	1749	break;
sahilmgandhi	18:6a4db94011d3	1750	default :
sahilmgandhi	18:6a4db94011d3	1751	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1752	}
sahilmgandhi	18:6a4db94011d3	1753
sahilmgandhi	18:6a4db94011d3	1754	switch(datasize)
sahilmgandhi	18:6a4db94011d3	1755	{
sahilmgandhi	18:6a4db94011d3	1756	case SAI_PROTOCOL_DATASIZE_16BIT:
sahilmgandhi	18:6a4db94011d3	1757	hsai->Init.DataSize = SAI_DATASIZE_16;
sahilmgandhi	18:6a4db94011d3	1758	hsai->FrameInit.FrameLength = 16U * nbslot;
sahilmgandhi	18:6a4db94011d3	1759	hsai->SlotInit.SlotSize = SAI_SLOTSIZE_16B;
sahilmgandhi	18:6a4db94011d3	1760	break;
sahilmgandhi	18:6a4db94011d3	1761	case SAI_PROTOCOL_DATASIZE_16BITEXTENDED :
sahilmgandhi	18:6a4db94011d3	1762	hsai->Init.DataSize = SAI_DATASIZE_16;
sahilmgandhi	18:6a4db94011d3	1763	hsai->FrameInit.FrameLength = 32U * nbslot;
sahilmgandhi	18:6a4db94011d3	1764	hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B;
sahilmgandhi	18:6a4db94011d3	1765	break;
sahilmgandhi	18:6a4db94011d3	1766	case SAI_PROTOCOL_DATASIZE_24BIT :
sahilmgandhi	18:6a4db94011d3	1767	hsai->Init.DataSize = SAI_DATASIZE_24;
sahilmgandhi	18:6a4db94011d3	1768	hsai->FrameInit.FrameLength = 32U * nbslot;
sahilmgandhi	18:6a4db94011d3	1769	hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B;
sahilmgandhi	18:6a4db94011d3	1770	break;
sahilmgandhi	18:6a4db94011d3	1771	case SAI_PROTOCOL_DATASIZE_32BIT:
sahilmgandhi	18:6a4db94011d3	1772	hsai->Init.DataSize = SAI_DATASIZE_32;
sahilmgandhi	18:6a4db94011d3	1773	hsai->FrameInit.FrameLength = 32U * nbslot;
sahilmgandhi	18:6a4db94011d3	1774	hsai->SlotInit.SlotSize = SAI_SLOTSIZE_32B;
sahilmgandhi	18:6a4db94011d3	1775	break;
sahilmgandhi	18:6a4db94011d3	1776	default :
sahilmgandhi	18:6a4db94011d3	1777	return HAL_ERROR;
sahilmgandhi	18:6a4db94011d3	1778	}
sahilmgandhi	18:6a4db94011d3	1779
sahilmgandhi	18:6a4db94011d3	1780	return HAL_OK;
sahilmgandhi	18:6a4db94011d3	1781	}
sahilmgandhi	18:6a4db94011d3	1782
sahilmgandhi	18:6a4db94011d3	1783	/**
sahilmgandhi	18:6a4db94011d3	1784	* @brief Fill the fifo.
sahilmgandhi	18:6a4db94011d3	1785	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1786	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1787	* @retval None
sahilmgandhi	18:6a4db94011d3	1788	*/
sahilmgandhi	18:6a4db94011d3	1789	static void SAI_FillFifo(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1790	{
sahilmgandhi	18:6a4db94011d3	1791	/* fill the fifo with data before to enabled the SAI */
sahilmgandhi	18:6a4db94011d3	1792	while(((hsai->Instance->SR & SAI_xSR_FLVL) != SAI_FIFOSTATUS_FULL) && (hsai->XferCount > 0U))
sahilmgandhi	18:6a4db94011d3	1793	{
sahilmgandhi	18:6a4db94011d3	1794	if((hsai->Init.DataSize == SAI_DATASIZE_8) && (hsai->Init.CompandingMode == SAI_NOCOMPANDING))
sahilmgandhi	18:6a4db94011d3	1795	{
sahilmgandhi	18:6a4db94011d3	1796	hsai->Instance->DR = (*hsai->pBuffPtr++);
sahilmgandhi	18:6a4db94011d3	1797	}
sahilmgandhi	18:6a4db94011d3	1798	else if(hsai->Init.DataSize <= SAI_DATASIZE_16)
sahilmgandhi	18:6a4db94011d3	1799	{
sahilmgandhi	18:6a4db94011d3	1800	hsai->Instance->DR = ((uint32_t )hsai->pBuffPtr);
sahilmgandhi	18:6a4db94011d3	1801	hsai->pBuffPtr+= 2U;
sahilmgandhi	18:6a4db94011d3	1802	}
sahilmgandhi	18:6a4db94011d3	1803	else
sahilmgandhi	18:6a4db94011d3	1804	{
sahilmgandhi	18:6a4db94011d3	1805	hsai->Instance->DR = ((uint32_t )hsai->pBuffPtr);
sahilmgandhi	18:6a4db94011d3	1806	hsai->pBuffPtr+= 4U;
sahilmgandhi	18:6a4db94011d3	1807	}
sahilmgandhi	18:6a4db94011d3	1808	hsai->XferCount--;
sahilmgandhi	18:6a4db94011d3	1809	}
sahilmgandhi	18:6a4db94011d3	1810	}
sahilmgandhi	18:6a4db94011d3	1811
sahilmgandhi	18:6a4db94011d3	1812	/**
sahilmgandhi	18:6a4db94011d3	1813	* @brief Return the interrupt flag to set according the SAI setup.
sahilmgandhi	18:6a4db94011d3	1814	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1815	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1816	* @param mode: SAI_MODE_DMA or SAI_MODE_IT
sahilmgandhi	18:6a4db94011d3	1817	* @retval the list of the IT flag to enable
sahilmgandhi	18:6a4db94011d3	1818	*/
sahilmgandhi	18:6a4db94011d3	1819	static uint32_t SAI_InterruptFlag(SAI_HandleTypeDef *hsai, uint32_t mode)
sahilmgandhi	18:6a4db94011d3	1820	{
sahilmgandhi	18:6a4db94011d3	1821	uint32_t tmpIT = SAI_IT_OVRUDR;
sahilmgandhi	18:6a4db94011d3	1822
sahilmgandhi	18:6a4db94011d3	1823	if(mode == SAI_MODE_IT)
sahilmgandhi	18:6a4db94011d3	1824	{
sahilmgandhi	18:6a4db94011d3	1825	tmpIT\|= SAI_IT_FREQ;
sahilmgandhi	18:6a4db94011d3	1826	}
sahilmgandhi	18:6a4db94011d3	1827
sahilmgandhi	18:6a4db94011d3	1828	if((hsai->Init.Protocol == SAI_AC97_PROTOCOL) &&
sahilmgandhi	18:6a4db94011d3	1829	((hsai->Init.AudioMode == SAI_MODESLAVE_RX) \|\| (hsai->Init.AudioMode == SAI_MODEMASTER_RX)))
sahilmgandhi	18:6a4db94011d3	1830	{
sahilmgandhi	18:6a4db94011d3	1831	tmpIT\|= SAI_IT_CNRDY;
sahilmgandhi	18:6a4db94011d3	1832	}
sahilmgandhi	18:6a4db94011d3	1833
sahilmgandhi	18:6a4db94011d3	1834	if((hsai->Init.AudioMode == SAI_MODESLAVE_RX) \|\| (hsai->Init.AudioMode == SAI_MODESLAVE_TX))
sahilmgandhi	18:6a4db94011d3	1835	{
sahilmgandhi	18:6a4db94011d3	1836	tmpIT\|= SAI_IT_AFSDET \| SAI_IT_LFSDET;
sahilmgandhi	18:6a4db94011d3	1837	}
sahilmgandhi	18:6a4db94011d3	1838	else
sahilmgandhi	18:6a4db94011d3	1839	{
sahilmgandhi	18:6a4db94011d3	1840	/* hsai has been configured in master mode */
sahilmgandhi	18:6a4db94011d3	1841	tmpIT\|= SAI_IT_WCKCFG;
sahilmgandhi	18:6a4db94011d3	1842	}
sahilmgandhi	18:6a4db94011d3	1843	return tmpIT;
sahilmgandhi	18:6a4db94011d3	1844	}
sahilmgandhi	18:6a4db94011d3	1845
sahilmgandhi	18:6a4db94011d3	1846	/**
sahilmgandhi	18:6a4db94011d3	1847	* @brief Disable the SAI and wait for the disabling.
sahilmgandhi	18:6a4db94011d3	1848	* @param hsai : pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1849	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1850	* @retval None
sahilmgandhi	18:6a4db94011d3	1851	*/
sahilmgandhi	18:6a4db94011d3	1852	static HAL_StatusTypeDef SAI_Disable(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1853	{
sahilmgandhi	18:6a4db94011d3	1854	register uint32_t count = SAI_DEFAULT_TIMEOUT * (SystemCoreClock /7/1000);
sahilmgandhi	18:6a4db94011d3	1855	HAL_StatusTypeDef status = HAL_OK;
sahilmgandhi	18:6a4db94011d3	1856
sahilmgandhi	18:6a4db94011d3	1857	/* Disable the SAI instance */
sahilmgandhi	18:6a4db94011d3	1858	__HAL_SAI_DISABLE(hsai);
sahilmgandhi	18:6a4db94011d3	1859
sahilmgandhi	18:6a4db94011d3	1860	do
sahilmgandhi	18:6a4db94011d3	1861	{
sahilmgandhi	18:6a4db94011d3	1862	/* Check for the Timeout */
sahilmgandhi	18:6a4db94011d3	1863	if (count-- == 0)
sahilmgandhi	18:6a4db94011d3	1864	{
sahilmgandhi	18:6a4db94011d3	1865	/* Update error code */
sahilmgandhi	18:6a4db94011d3	1866	hsai->ErrorCode \|= HAL_SAI_ERROR_TIMEOUT;
sahilmgandhi	18:6a4db94011d3	1867	status = HAL_TIMEOUT;
sahilmgandhi	18:6a4db94011d3	1868	break;
sahilmgandhi	18:6a4db94011d3	1869	}
sahilmgandhi	18:6a4db94011d3	1870	} while((hsai->Instance->CR1 & SAI_xCR1_SAIEN) != RESET);
sahilmgandhi	18:6a4db94011d3	1871
sahilmgandhi	18:6a4db94011d3	1872	return status;
sahilmgandhi	18:6a4db94011d3	1873	}
sahilmgandhi	18:6a4db94011d3	1874
sahilmgandhi	18:6a4db94011d3	1875	/**
sahilmgandhi	18:6a4db94011d3	1876	* @brief Tx Handler for Transmit in Interrupt mode 8-Bit transfer.
sahilmgandhi	18:6a4db94011d3	1877	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1878	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1879	* @retval None
sahilmgandhi	18:6a4db94011d3	1880	*/
sahilmgandhi	18:6a4db94011d3	1881	static void SAI_Transmit_IT8Bit(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1882	{
sahilmgandhi	18:6a4db94011d3	1883	if(hsai->XferCount == 0U)
sahilmgandhi	18:6a4db94011d3	1884	{
sahilmgandhi	18:6a4db94011d3	1885	/* Handle the end of the transmission */
sahilmgandhi	18:6a4db94011d3	1886	/* Disable FREQ and OVRUDR interrupts */
sahilmgandhi	18:6a4db94011d3	1887	__HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT));
sahilmgandhi	18:6a4db94011d3	1888	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	1889	HAL_SAI_TxCpltCallback(hsai);
sahilmgandhi	18:6a4db94011d3	1890	}
sahilmgandhi	18:6a4db94011d3	1891	else
sahilmgandhi	18:6a4db94011d3	1892	{
sahilmgandhi	18:6a4db94011d3	1893	/* Write data on DR register */
sahilmgandhi	18:6a4db94011d3	1894	hsai->Instance->DR = (*hsai->pBuffPtr++);
sahilmgandhi	18:6a4db94011d3	1895	hsai->XferCount--;
sahilmgandhi	18:6a4db94011d3	1896	}
sahilmgandhi	18:6a4db94011d3	1897	}
sahilmgandhi	18:6a4db94011d3	1898
sahilmgandhi	18:6a4db94011d3	1899	/**
sahilmgandhi	18:6a4db94011d3	1900	* @brief Tx Handler for Transmit in Interrupt mode for 16-Bit transfer.
sahilmgandhi	18:6a4db94011d3	1901	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1902	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1903	* @retval None
sahilmgandhi	18:6a4db94011d3	1904	*/
sahilmgandhi	18:6a4db94011d3	1905	static void SAI_Transmit_IT16Bit(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1906	{
sahilmgandhi	18:6a4db94011d3	1907	if(hsai->XferCount == 0U)
sahilmgandhi	18:6a4db94011d3	1908	{
sahilmgandhi	18:6a4db94011d3	1909	/* Handle the end of the transmission */
sahilmgandhi	18:6a4db94011d3	1910	/* Disable FREQ and OVRUDR interrupts */
sahilmgandhi	18:6a4db94011d3	1911	__HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT));
sahilmgandhi	18:6a4db94011d3	1912	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	1913	HAL_SAI_TxCpltCallback(hsai);
sahilmgandhi	18:6a4db94011d3	1914	}
sahilmgandhi	18:6a4db94011d3	1915	else
sahilmgandhi	18:6a4db94011d3	1916	{
sahilmgandhi	18:6a4db94011d3	1917	/* Write data on DR register */
sahilmgandhi	18:6a4db94011d3	1918	hsai->Instance->DR = (uint16_t )hsai->pBuffPtr;
sahilmgandhi	18:6a4db94011d3	1919	hsai->pBuffPtr+=2U;
sahilmgandhi	18:6a4db94011d3	1920	hsai->XferCount--;
sahilmgandhi	18:6a4db94011d3	1921	}
sahilmgandhi	18:6a4db94011d3	1922	}
sahilmgandhi	18:6a4db94011d3	1923
sahilmgandhi	18:6a4db94011d3	1924	/**
sahilmgandhi	18:6a4db94011d3	1925	* @brief Tx Handler for Transmit in Interrupt mode for 32-Bit transfer.
sahilmgandhi	18:6a4db94011d3	1926	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1927	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1928	* @retval None
sahilmgandhi	18:6a4db94011d3	1929	*/
sahilmgandhi	18:6a4db94011d3	1930	static void SAI_Transmit_IT32Bit(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1931	{
sahilmgandhi	18:6a4db94011d3	1932	if(hsai->XferCount == 0U)
sahilmgandhi	18:6a4db94011d3	1933	{
sahilmgandhi	18:6a4db94011d3	1934	/* Handle the end of the transmission */
sahilmgandhi	18:6a4db94011d3	1935	/* Disable FREQ and OVRUDR interrupts */
sahilmgandhi	18:6a4db94011d3	1936	__HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT));
sahilmgandhi	18:6a4db94011d3	1937	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	1938	HAL_SAI_TxCpltCallback(hsai);
sahilmgandhi	18:6a4db94011d3	1939	}
sahilmgandhi	18:6a4db94011d3	1940	else
sahilmgandhi	18:6a4db94011d3	1941	{
sahilmgandhi	18:6a4db94011d3	1942	/* Write data on DR register */
sahilmgandhi	18:6a4db94011d3	1943	hsai->Instance->DR = (uint32_t )hsai->pBuffPtr;
sahilmgandhi	18:6a4db94011d3	1944	hsai->pBuffPtr+=4U;
sahilmgandhi	18:6a4db94011d3	1945	hsai->XferCount--;
sahilmgandhi	18:6a4db94011d3	1946	}
sahilmgandhi	18:6a4db94011d3	1947	}
sahilmgandhi	18:6a4db94011d3	1948
sahilmgandhi	18:6a4db94011d3	1949	/**
sahilmgandhi	18:6a4db94011d3	1950	* @brief Rx Handler for Receive in Interrupt mode 8-Bit transfer.
sahilmgandhi	18:6a4db94011d3	1951	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1952	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1953	* @retval None
sahilmgandhi	18:6a4db94011d3	1954	*/
sahilmgandhi	18:6a4db94011d3	1955	static void SAI_Receive_IT8Bit(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1956	{
sahilmgandhi	18:6a4db94011d3	1957	/* Receive data */
sahilmgandhi	18:6a4db94011d3	1958	(*hsai->pBuffPtr++) = hsai->Instance->DR;
sahilmgandhi	18:6a4db94011d3	1959	hsai->XferCount--;
sahilmgandhi	18:6a4db94011d3	1960
sahilmgandhi	18:6a4db94011d3	1961	/* Check end of the transfer */
sahilmgandhi	18:6a4db94011d3	1962	if(hsai->XferCount == 0U)
sahilmgandhi	18:6a4db94011d3	1963	{
sahilmgandhi	18:6a4db94011d3	1964	/* Disable TXE and OVRUDR interrupts */
sahilmgandhi	18:6a4db94011d3	1965	__HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT));
sahilmgandhi	18:6a4db94011d3	1966
sahilmgandhi	18:6a4db94011d3	1967	/* Clear the SAI Overrun flag */
sahilmgandhi	18:6a4db94011d3	1968	__HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_OVRUDR);
sahilmgandhi	18:6a4db94011d3	1969
sahilmgandhi	18:6a4db94011d3	1970	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	1971	HAL_SAI_RxCpltCallback(hsai);
sahilmgandhi	18:6a4db94011d3	1972	}
sahilmgandhi	18:6a4db94011d3	1973	}
sahilmgandhi	18:6a4db94011d3	1974
sahilmgandhi	18:6a4db94011d3	1975	/**
sahilmgandhi	18:6a4db94011d3	1976	* @brief Rx Handler for Receive in Interrupt mode for 16-Bit transfer.
sahilmgandhi	18:6a4db94011d3	1977	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	1978	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	1979	* @retval None
sahilmgandhi	18:6a4db94011d3	1980	*/
sahilmgandhi	18:6a4db94011d3	1981	static void SAI_Receive_IT16Bit(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	1982	{
sahilmgandhi	18:6a4db94011d3	1983	/* Receive data */
sahilmgandhi	18:6a4db94011d3	1984	(uint16_t)hsai->pBuffPtr = hsai->Instance->DR;
sahilmgandhi	18:6a4db94011d3	1985	hsai->pBuffPtr+=2U;
sahilmgandhi	18:6a4db94011d3	1986	hsai->XferCount--;
sahilmgandhi	18:6a4db94011d3	1987
sahilmgandhi	18:6a4db94011d3	1988	/* Check end of the transfer */
sahilmgandhi	18:6a4db94011d3	1989	if(hsai->XferCount == 0U)
sahilmgandhi	18:6a4db94011d3	1990	{
sahilmgandhi	18:6a4db94011d3	1991	/* Disable TXE and OVRUDR interrupts */
sahilmgandhi	18:6a4db94011d3	1992	__HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT));
sahilmgandhi	18:6a4db94011d3	1993
sahilmgandhi	18:6a4db94011d3	1994	/* Clear the SAI Overrun flag */
sahilmgandhi	18:6a4db94011d3	1995	__HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_OVRUDR);
sahilmgandhi	18:6a4db94011d3	1996
sahilmgandhi	18:6a4db94011d3	1997	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	1998	HAL_SAI_RxCpltCallback(hsai);
sahilmgandhi	18:6a4db94011d3	1999	}
sahilmgandhi	18:6a4db94011d3	2000	}
sahilmgandhi	18:6a4db94011d3	2001
sahilmgandhi	18:6a4db94011d3	2002	/**
sahilmgandhi	18:6a4db94011d3	2003	* @brief Rx Handler for Receive in Interrupt mode for 32-Bit transfer.
sahilmgandhi	18:6a4db94011d3	2004	* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	2005	* the configuration information for SAI module.
sahilmgandhi	18:6a4db94011d3	2006	* @retval None
sahilmgandhi	18:6a4db94011d3	2007	*/
sahilmgandhi	18:6a4db94011d3	2008	static void SAI_Receive_IT32Bit(SAI_HandleTypeDef *hsai)
sahilmgandhi	18:6a4db94011d3	2009	{
sahilmgandhi	18:6a4db94011d3	2010	/* Receive data */
sahilmgandhi	18:6a4db94011d3	2011	(uint32_t)hsai->pBuffPtr = hsai->Instance->DR;
sahilmgandhi	18:6a4db94011d3	2012	hsai->pBuffPtr+=4U;
sahilmgandhi	18:6a4db94011d3	2013	hsai->XferCount--;
sahilmgandhi	18:6a4db94011d3	2014
sahilmgandhi	18:6a4db94011d3	2015	/* Check end of the transfer */
sahilmgandhi	18:6a4db94011d3	2016	if(hsai->XferCount == 0U)
sahilmgandhi	18:6a4db94011d3	2017	{
sahilmgandhi	18:6a4db94011d3	2018	/* Disable TXE and OVRUDR interrupts */
sahilmgandhi	18:6a4db94011d3	2019	__HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_IT));
sahilmgandhi	18:6a4db94011d3	2020
sahilmgandhi	18:6a4db94011d3	2021	/* Clear the SAI Overrun flag */
sahilmgandhi	18:6a4db94011d3	2022	__HAL_SAI_CLEAR_FLAG(hsai, SAI_FLAG_OVRUDR);
sahilmgandhi	18:6a4db94011d3	2023
sahilmgandhi	18:6a4db94011d3	2024	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	2025	HAL_SAI_RxCpltCallback(hsai);
sahilmgandhi	18:6a4db94011d3	2026	}
sahilmgandhi	18:6a4db94011d3	2027	}
sahilmgandhi	18:6a4db94011d3	2028
sahilmgandhi	18:6a4db94011d3	2029	/**
sahilmgandhi	18:6a4db94011d3	2030	* @brief DMA SAI transmit process complete callback.
sahilmgandhi	18:6a4db94011d3	2031	* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	2032	* the configuration information for the specified DMA module.
sahilmgandhi	18:6a4db94011d3	2033	* @retval None
sahilmgandhi	18:6a4db94011d3	2034	*/
sahilmgandhi	18:6a4db94011d3	2035	static void SAI_DMATxCplt(DMA_HandleTypeDef *hdma)
sahilmgandhi	18:6a4db94011d3	2036	{
sahilmgandhi	18:6a4db94011d3	2037	SAI_HandleTypeDef* hsai = (SAI_HandleTypeDef)((DMA_HandleTypeDef )hdma)->Parent;
sahilmgandhi	18:6a4db94011d3	2038
sahilmgandhi	18:6a4db94011d3	2039	if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U)
sahilmgandhi	18:6a4db94011d3	2040	{
sahilmgandhi	18:6a4db94011d3	2041	hsai->XferCount = 0U;
sahilmgandhi	18:6a4db94011d3	2042
sahilmgandhi	18:6a4db94011d3	2043	/* Disable SAI Tx DMA Request */
sahilmgandhi	18:6a4db94011d3	2044	hsai->Instance->CR1 &= (uint32_t)(~SAI_xCR1_DMAEN);
sahilmgandhi	18:6a4db94011d3	2045
sahilmgandhi	18:6a4db94011d3	2046	/* Stop the interrupts error handling */
sahilmgandhi	18:6a4db94011d3	2047	__HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_DMA));
sahilmgandhi	18:6a4db94011d3	2048
sahilmgandhi	18:6a4db94011d3	2049	hsai->State= HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	2050	}
sahilmgandhi	18:6a4db94011d3	2051	HAL_SAI_TxCpltCallback(hsai);
sahilmgandhi	18:6a4db94011d3	2052	}
sahilmgandhi	18:6a4db94011d3	2053
sahilmgandhi	18:6a4db94011d3	2054	/**
sahilmgandhi	18:6a4db94011d3	2055	* @brief DMA SAI transmit process half complete callback.
sahilmgandhi	18:6a4db94011d3	2056	* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	2057	* the configuration information for the specified DMA module.
sahilmgandhi	18:6a4db94011d3	2058	* @retval None
sahilmgandhi	18:6a4db94011d3	2059	*/
sahilmgandhi	18:6a4db94011d3	2060	static void SAI_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
sahilmgandhi	18:6a4db94011d3	2061	{
sahilmgandhi	18:6a4db94011d3	2062	SAI_HandleTypeDef* hsai = (SAI_HandleTypeDef)((DMA_HandleTypeDef)hdma)->Parent;
sahilmgandhi	18:6a4db94011d3	2063
sahilmgandhi	18:6a4db94011d3	2064	HAL_SAI_TxHalfCpltCallback(hsai);
sahilmgandhi	18:6a4db94011d3	2065	}
sahilmgandhi	18:6a4db94011d3	2066
sahilmgandhi	18:6a4db94011d3	2067	/**
sahilmgandhi	18:6a4db94011d3	2068	* @brief DMA SAI receive process complete callback.
sahilmgandhi	18:6a4db94011d3	2069	* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	2070	* the configuration information for the specified DMA module.
sahilmgandhi	18:6a4db94011d3	2071	* @retval None
sahilmgandhi	18:6a4db94011d3	2072	*/
sahilmgandhi	18:6a4db94011d3	2073	static void SAI_DMARxCplt(DMA_HandleTypeDef *hdma)
sahilmgandhi	18:6a4db94011d3	2074	{
sahilmgandhi	18:6a4db94011d3	2075	SAI_HandleTypeDef* hsai = ( SAI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
sahilmgandhi	18:6a4db94011d3	2076	if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U)
sahilmgandhi	18:6a4db94011d3	2077	{
sahilmgandhi	18:6a4db94011d3	2078	/* Disable Rx DMA Request */
sahilmgandhi	18:6a4db94011d3	2079	hsai->Instance->CR1 &= (uint32_t)(~SAI_xCR1_DMAEN);
sahilmgandhi	18:6a4db94011d3	2080	hsai->XferCount = 0U;
sahilmgandhi	18:6a4db94011d3	2081
sahilmgandhi	18:6a4db94011d3	2082	/* Stop the interrupts error handling */
sahilmgandhi	18:6a4db94011d3	2083	__HAL_SAI_DISABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_DMA));
sahilmgandhi	18:6a4db94011d3	2084
sahilmgandhi	18:6a4db94011d3	2085	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	2086	}
sahilmgandhi	18:6a4db94011d3	2087	HAL_SAI_RxCpltCallback(hsai);
sahilmgandhi	18:6a4db94011d3	2088	}
sahilmgandhi	18:6a4db94011d3	2089
sahilmgandhi	18:6a4db94011d3	2090	/**
sahilmgandhi	18:6a4db94011d3	2091	* @brief DMA SAI receive process half complete callback
sahilmgandhi	18:6a4db94011d3	2092	* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	2093	* the configuration information for the specified DMA module.
sahilmgandhi	18:6a4db94011d3	2094	* @retval None
sahilmgandhi	18:6a4db94011d3	2095	*/
sahilmgandhi	18:6a4db94011d3	2096	static void SAI_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
sahilmgandhi	18:6a4db94011d3	2097	{
sahilmgandhi	18:6a4db94011d3	2098	SAI_HandleTypeDef* hsai = (SAI_HandleTypeDef)((DMA_HandleTypeDef)hdma)->Parent;
sahilmgandhi	18:6a4db94011d3	2099
sahilmgandhi	18:6a4db94011d3	2100	HAL_SAI_RxHalfCpltCallback(hsai);
sahilmgandhi	18:6a4db94011d3	2101	}
sahilmgandhi	18:6a4db94011d3	2102
sahilmgandhi	18:6a4db94011d3	2103	/**
sahilmgandhi	18:6a4db94011d3	2104	* @brief DMA SAI communication error callback.
sahilmgandhi	18:6a4db94011d3	2105	* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	2106	* the configuration information for the specified DMA module.
sahilmgandhi	18:6a4db94011d3	2107	* @retval None
sahilmgandhi	18:6a4db94011d3	2108	*/
sahilmgandhi	18:6a4db94011d3	2109	static void SAI_DMAError(DMA_HandleTypeDef *hdma)
sahilmgandhi	18:6a4db94011d3	2110	{
sahilmgandhi	18:6a4db94011d3	2111	SAI_HandleTypeDef* hsai = ( SAI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
sahilmgandhi	18:6a4db94011d3	2112
sahilmgandhi	18:6a4db94011d3	2113	/* Set SAI error code */
sahilmgandhi	18:6a4db94011d3	2114	hsai->ErrorCode \|= HAL_SAI_ERROR_DMA;
sahilmgandhi	18:6a4db94011d3	2115
sahilmgandhi	18:6a4db94011d3	2116	if((hsai->hdmatx->ErrorCode == HAL_DMA_ERROR_TE) \|\| (hsai->hdmarx->ErrorCode == HAL_DMA_ERROR_TE))
sahilmgandhi	18:6a4db94011d3	2117	{
sahilmgandhi	18:6a4db94011d3	2118	/* Disable the SAI DMA request */
sahilmgandhi	18:6a4db94011d3	2119	hsai->Instance->CR1 &= ~SAI_xCR1_DMAEN;
sahilmgandhi	18:6a4db94011d3	2120
sahilmgandhi	18:6a4db94011d3	2121	/* Disable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	2122	SAI_Disable(hsai);
sahilmgandhi	18:6a4db94011d3	2123
sahilmgandhi	18:6a4db94011d3	2124	/* Set the SAI state ready to be able to start again the process */
sahilmgandhi	18:6a4db94011d3	2125	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	2126
sahilmgandhi	18:6a4db94011d3	2127	/* Initialize XferCount */
sahilmgandhi	18:6a4db94011d3	2128	hsai->XferCount = 0U;
sahilmgandhi	18:6a4db94011d3	2129	}
sahilmgandhi	18:6a4db94011d3	2130	/* SAI error Callback */
sahilmgandhi	18:6a4db94011d3	2131	HAL_SAI_ErrorCallback(hsai);
sahilmgandhi	18:6a4db94011d3	2132	}
sahilmgandhi	18:6a4db94011d3	2133
sahilmgandhi	18:6a4db94011d3	2134	/**
sahilmgandhi	18:6a4db94011d3	2135	* @brief DMA SAI Abort callback.
sahilmgandhi	18:6a4db94011d3	2136	* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
sahilmgandhi	18:6a4db94011d3	2137	* the configuration information for the specified DMA module.
sahilmgandhi	18:6a4db94011d3	2138	* @retval None
sahilmgandhi	18:6a4db94011d3	2139	*/
sahilmgandhi	18:6a4db94011d3	2140	static void SAI_DMAAbort(DMA_HandleTypeDef *hdma)
sahilmgandhi	18:6a4db94011d3	2141	{
sahilmgandhi	18:6a4db94011d3	2142	SAI_HandleTypeDef* hsai = ( SAI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
sahilmgandhi	18:6a4db94011d3	2143
sahilmgandhi	18:6a4db94011d3	2144	/* Disable DMA request */
sahilmgandhi	18:6a4db94011d3	2145	hsai->Instance->CR1 &= ~SAI_xCR1_DMAEN;
sahilmgandhi	18:6a4db94011d3	2146
sahilmgandhi	18:6a4db94011d3	2147	/* Disable all interrupts and clear all flags */
sahilmgandhi	18:6a4db94011d3	2148	hsai->Instance->IMR = 0U;
sahilmgandhi	18:6a4db94011d3	2149	hsai->Instance->CLRFR = 0xFFFFFFFFU;
sahilmgandhi	18:6a4db94011d3	2150
sahilmgandhi	18:6a4db94011d3	2151	if(hsai->ErrorCode != HAL_SAI_ERROR_WCKCFG)
sahilmgandhi	18:6a4db94011d3	2152	{
sahilmgandhi	18:6a4db94011d3	2153	/* Disable SAI peripheral */
sahilmgandhi	18:6a4db94011d3	2154	SAI_Disable(hsai);
sahilmgandhi	18:6a4db94011d3	2155
sahilmgandhi	18:6a4db94011d3	2156	/* Flush the fifo */
sahilmgandhi	18:6a4db94011d3	2157	SET_BIT(hsai->Instance->CR2, SAI_xCR2_FFLUSH);
sahilmgandhi	18:6a4db94011d3	2158	}
sahilmgandhi	18:6a4db94011d3	2159	/* Set the SAI state to ready to be able to start again the process */
sahilmgandhi	18:6a4db94011d3	2160	hsai->State = HAL_SAI_STATE_READY;
sahilmgandhi	18:6a4db94011d3	2161
sahilmgandhi	18:6a4db94011d3	2162	/* Initialize XferCount */
sahilmgandhi	18:6a4db94011d3	2163	hsai->XferCount = 0U;
sahilmgandhi	18:6a4db94011d3	2164
sahilmgandhi	18:6a4db94011d3	2165	/* SAI error Callback */
sahilmgandhi	18:6a4db94011d3	2166	HAL_SAI_ErrorCallback(hsai);
sahilmgandhi	18:6a4db94011d3	2167	}
sahilmgandhi	18:6a4db94011d3	2168
sahilmgandhi	18:6a4db94011d3	2169	/**
sahilmgandhi	18:6a4db94011d3	2170	* @}
sahilmgandhi	18:6a4db94011d3	2171	*/
sahilmgandhi	18:6a4db94011d3	2172
sahilmgandhi	18:6a4db94011d3	2173	#endif /* STM32F427xx \|\| STM32F437xx \|\| STM32F429xx \|\| STM32F439xx \|\| STM32F446xx \|\| STM32F469xx \|\| STM32F479xx */
sahilmgandhi	18:6a4db94011d3	2174	#endif /* HAL_SAI_MODULE_ENABLED */
sahilmgandhi	18:6a4db94011d3	2175	/**
sahilmgandhi	18:6a4db94011d3	2176	* @}
sahilmgandhi	18:6a4db94011d3	2177	*/
sahilmgandhi	18:6a4db94011d3	2178
sahilmgandhi	18:6a4db94011d3	2179	/**
sahilmgandhi	18:6a4db94011d3	2180	* @}
sahilmgandhi	18:6a4db94011d3	2181	*/
sahilmgandhi	18:6a4db94011d3	2182
sahilmgandhi	18:6a4db94011d3	2183	/********************** (C) COPYRIGHT STMicroelectronics *END OF FILE**/

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Type:	Program
Created:	25 Apr 2017
Imports:	29
Forks:	0
Commits:	47
Dependents:	0
Dependencies:	2
Followers:	5

The code in this repository is Apache licensed.

mbed-dev/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_sai.c@46:b156ef445742, 2017-06-03 (annotated)

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