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targets/cmsis/TARGET_STM/TARGET_STM32F3XX/stm32f30x_usart.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:: bogdanm
Date:: Thu Oct 01 15:25:22 2015 +0300
Revision:: 0:9b334a45a8ff

Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

User	Revision	Line number	New contents of line
bogdanm	0:9b334a45a8ff	1	/**
bogdanm	0:9b334a45a8ff	2	******************************************************************************
bogdanm	0:9b334a45a8ff	3	* @file stm32f30x_usart.c
bogdanm	0:9b334a45a8ff	4	* @author MCD Application Team
bogdanm	0:9b334a45a8ff	5	* @version V1.1.0
bogdanm	0:9b334a45a8ff	6	* @date 27-February-2014
bogdanm	0:9b334a45a8ff	7	* @brief This file provides firmware functions to manage the following
bogdanm	0:9b334a45a8ff	8	* functionalities of the Universal synchronous asynchronous receiver
bogdanm	0:9b334a45a8ff	9	* transmitter (USART):
bogdanm	0:9b334a45a8ff	10	* + Initialization and Configuration
bogdanm	0:9b334a45a8ff	11	* + STOP Mode
bogdanm	0:9b334a45a8ff	12	* + AutoBaudRate
bogdanm	0:9b334a45a8ff	13	* + Data transfers
bogdanm	0:9b334a45a8ff	14	* + Multi-Processor Communication
bogdanm	0:9b334a45a8ff	15	* + LIN mode
bogdanm	0:9b334a45a8ff	16	* + Half-duplex mode
bogdanm	0:9b334a45a8ff	17	* + Smartcard mode
bogdanm	0:9b334a45a8ff	18	* + IrDA mode
bogdanm	0:9b334a45a8ff	19	* + RS485 mode
bogdanm	0:9b334a45a8ff	20	* + DMA transfers management
bogdanm	0:9b334a45a8ff	21	* + Interrupts and flags management
bogdanm	0:9b334a45a8ff	22	*
bogdanm	0:9b334a45a8ff	23	* @verbatim
bogdanm	0:9b334a45a8ff	24	===============================================================================
bogdanm	0:9b334a45a8ff	25	##### How to use this driver #####
bogdanm	0:9b334a45a8ff	26	===============================================================================
bogdanm	0:9b334a45a8ff	27	[..]
bogdanm	0:9b334a45a8ff	28	(#) Enable peripheral clock using RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE)
bogdanm	0:9b334a45a8ff	29	function for USART1 or using RCC_APB1PeriphClockCmd(RCC_APB1Periph_USARTx, ENABLE)
bogdanm	0:9b334a45a8ff	30	function for USART2, USART3, UART4 and UART5.
bogdanm	0:9b334a45a8ff	31	(#) According to the USART mode, enable the GPIO clocks using
bogdanm	0:9b334a45a8ff	32	RCC_AHBPeriphClockCmd() function. (The I/O can be TX, RX, CTS,
bogdanm	0:9b334a45a8ff	33	or and SCLK).
bogdanm	0:9b334a45a8ff	34	(#) Peripheral's alternate function:
bogdanm	0:9b334a45a8ff	35	(++) Connect the pin to the desired peripherals' Alternate
bogdanm	0:9b334a45a8ff	36	Function (AF) using GPIO_PinAFConfig() function.
bogdanm	0:9b334a45a8ff	37	(++) Configure the desired pin in alternate function by:
bogdanm	0:9b334a45a8ff	38	GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF.
bogdanm	0:9b334a45a8ff	39	(++) Select the type, pull-up/pull-down and output speed via
bogdanm	0:9b334a45a8ff	40	GPIO_PuPd, GPIO_OType and GPIO_Speed members.
bogdanm	0:9b334a45a8ff	41	(++) Call GPIO_Init() function.
bogdanm	0:9b334a45a8ff	42	(#) Program the Baud Rate, Word Length , Stop Bit, Parity, Hardware
bogdanm	0:9b334a45a8ff	43	flow control and Mode(Receiver/Transmitter) using the SPI_Init()
bogdanm	0:9b334a45a8ff	44	function.
bogdanm	0:9b334a45a8ff	45	(#) For synchronous mode, enable the clock and program the polarity,
bogdanm	0:9b334a45a8ff	46	phase and last bit using the USART_ClockInit() function.
bogdanm	0:9b334a45a8ff	47	(#) Enable the USART using the USART_Cmd() function.
bogdanm	0:9b334a45a8ff	48	(#) Enable the NVIC and the corresponding interrupt using the function
bogdanm	0:9b334a45a8ff	49	USART_ITConfig() if you need to use interrupt mode.
bogdanm	0:9b334a45a8ff	50	(#) When using the DMA mode:
bogdanm	0:9b334a45a8ff	51	(++) Configure the DMA using DMA_Init() function.
bogdanm	0:9b334a45a8ff	52	(++) Activate the needed channel Request using USART_DMACmd() function.
bogdanm	0:9b334a45a8ff	53	(#) Enable the DMA using the DMA_Cmd() function, when using DMA mode.
bogdanm	0:9b334a45a8ff	54	[..]
bogdanm	0:9b334a45a8ff	55	Refer to Multi-Processor, LIN, half-duplex, Smartcard, IrDA sub-sections
bogdanm	0:9b334a45a8ff	56	for more details.
bogdanm	0:9b334a45a8ff	57
bogdanm	0:9b334a45a8ff	58	@endverbatim
bogdanm	0:9b334a45a8ff	59
bogdanm	0:9b334a45a8ff	60	******************************************************************************
bogdanm	0:9b334a45a8ff	61	* @attention
bogdanm	0:9b334a45a8ff	62	*
bogdanm	0:9b334a45a8ff	63	* <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
bogdanm	0:9b334a45a8ff	64	*
bogdanm	0:9b334a45a8ff	65	* Redistribution and use in source and binary forms, with or without modification,
bogdanm	0:9b334a45a8ff	66	* are permitted provided that the following conditions are met:
bogdanm	0:9b334a45a8ff	67	* 1. Redistributions of source code must retain the above copyright notice,
bogdanm	0:9b334a45a8ff	68	* this list of conditions and the following disclaimer.
bogdanm	0:9b334a45a8ff	69	* 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm	0:9b334a45a8ff	70	* this list of conditions and the following disclaimer in the documentation
bogdanm	0:9b334a45a8ff	71	* and/or other materials provided with the distribution.
bogdanm	0:9b334a45a8ff	72	* 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm	0:9b334a45a8ff	73	* may be used to endorse or promote products derived from this software
bogdanm	0:9b334a45a8ff	74	* without specific prior written permission.
bogdanm	0:9b334a45a8ff	75	*
bogdanm	0:9b334a45a8ff	76	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm	0:9b334a45a8ff	77	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm	0:9b334a45a8ff	78	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm	0:9b334a45a8ff	79	* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm	0:9b334a45a8ff	80	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm	0:9b334a45a8ff	81	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm	0:9b334a45a8ff	82	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm	0:9b334a45a8ff	83	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm	0:9b334a45a8ff	84	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm	0:9b334a45a8ff	85	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm	0:9b334a45a8ff	86	*
bogdanm	0:9b334a45a8ff	87	******************************************************************************
bogdanm	0:9b334a45a8ff	88	*/
bogdanm	0:9b334a45a8ff	89
bogdanm	0:9b334a45a8ff	90	/* Includes ------------------------------------------------------------------*/
bogdanm	0:9b334a45a8ff	91	#include "stm32f30x_usart.h"
bogdanm	0:9b334a45a8ff	92	#include "stm32f30x_rcc.h"
bogdanm	0:9b334a45a8ff	93
bogdanm	0:9b334a45a8ff	94	/** @addtogroup STM32F30x_StdPeriph_Driver
bogdanm	0:9b334a45a8ff	95	* @{
bogdanm	0:9b334a45a8ff	96	*/
bogdanm	0:9b334a45a8ff	97
bogdanm	0:9b334a45a8ff	98	/** @defgroup USART
bogdanm	0:9b334a45a8ff	99	* @brief USART driver modules
bogdanm	0:9b334a45a8ff	100	* @{
bogdanm	0:9b334a45a8ff	101	*/
bogdanm	0:9b334a45a8ff	102
bogdanm	0:9b334a45a8ff	103	/* Private typedef -----------------------------------------------------------*/
bogdanm	0:9b334a45a8ff	104	/* Private define ------------------------------------------------------------*/
bogdanm	0:9b334a45a8ff	105
bogdanm	0:9b334a45a8ff	106	/!< USART CR1 register clear Mask ((~(uint32_t)0xFFFFE6F3)) /
bogdanm	0:9b334a45a8ff	107	#define CR1_CLEAR_MASK ((uint32_t)(USART_CR1_M \| USART_CR1_PCE \| \
bogdanm	0:9b334a45a8ff	108	USART_CR1_PS \| USART_CR1_TE \| \
bogdanm	0:9b334a45a8ff	109	USART_CR1_RE))
bogdanm	0:9b334a45a8ff	110
bogdanm	0:9b334a45a8ff	111	/!< USART CR2 register clock bits clear Mask ((~(uint32_t)0xFFFFF0FF)) /
bogdanm	0:9b334a45a8ff	112	#define CR2_CLOCK_CLEAR_MASK ((uint32_t)(USART_CR2_CLKEN \| USART_CR2_CPOL \| \
bogdanm	0:9b334a45a8ff	113	USART_CR2_CPHA \| USART_CR2_LBCL))
bogdanm	0:9b334a45a8ff	114
bogdanm	0:9b334a45a8ff	115	/!< USART CR3 register clear Mask ((~(uint32_t)0xFFFFFCFF)) /
bogdanm	0:9b334a45a8ff	116	#define CR3_CLEAR_MASK ((uint32_t)(USART_CR3_RTSE \| USART_CR3_CTSE))
bogdanm	0:9b334a45a8ff	117
bogdanm	0:9b334a45a8ff	118	/!< USART Interrupts mask /
bogdanm	0:9b334a45a8ff	119	#define IT_MASK ((uint32_t)0x000000FF)
bogdanm	0:9b334a45a8ff	120
bogdanm	0:9b334a45a8ff	121	/* Private macro -------------------------------------------------------------*/
bogdanm	0:9b334a45a8ff	122	/* Private variables ---------------------------------------------------------*/
bogdanm	0:9b334a45a8ff	123	/* Private function prototypes -----------------------------------------------*/
bogdanm	0:9b334a45a8ff	124	/* Private functions ---------------------------------------------------------*/
bogdanm	0:9b334a45a8ff	125
bogdanm	0:9b334a45a8ff	126	/** @defgroup USART_Private_Functions
bogdanm	0:9b334a45a8ff	127	* @{
bogdanm	0:9b334a45a8ff	128	*/
bogdanm	0:9b334a45a8ff	129
bogdanm	0:9b334a45a8ff	130	/** @defgroup USART_Group1 Initialization and Configuration functions
bogdanm	0:9b334a45a8ff	131	* @brief Initialization and Configuration functions
bogdanm	0:9b334a45a8ff	132	*
bogdanm	0:9b334a45a8ff	133	@verbatim
bogdanm	0:9b334a45a8ff	134	===============================================================================
bogdanm	0:9b334a45a8ff	135	##### Initialization and Configuration functions #####
bogdanm	0:9b334a45a8ff	136	===============================================================================
bogdanm	0:9b334a45a8ff	137	[..]
bogdanm	0:9b334a45a8ff	138	This subsection provides a set of functions allowing to initialize the USART
bogdanm	0:9b334a45a8ff	139	in asynchronous and in synchronous modes.
bogdanm	0:9b334a45a8ff	140	(+) For the asynchronous mode only these parameters can be configured:
bogdanm	0:9b334a45a8ff	141	(++) Baud Rate.
bogdanm	0:9b334a45a8ff	142	(++) Word Length.
bogdanm	0:9b334a45a8ff	143	(++) Stop Bit.
bogdanm	0:9b334a45a8ff	144	(++) Parity: If the parity is enabled, then the MSB bit of the data written
bogdanm	0:9b334a45a8ff	145	in the data register is transmitted but is changed by the parity bit.
bogdanm	0:9b334a45a8ff	146	Depending on the frame length defined by the M bit (8-bits or 9-bits),
bogdanm	0:9b334a45a8ff	147	the possible USART frame formats are as listed in the following table:
bogdanm	0:9b334a45a8ff	148	[..]
bogdanm	0:9b334a45a8ff	149	+-------------------------------------------------------------+
bogdanm	0:9b334a45a8ff	150	\| M bit \| PCE bit \| USART frame \|
bogdanm	0:9b334a45a8ff	151	\|---------------------\|---------------------------------------\|
bogdanm	0:9b334a45a8ff	152	\| 0 \| 0 \| \| SB \| 8 bit data \| STB \| \|
bogdanm	0:9b334a45a8ff	153	\|---------\|-----------\|---------------------------------------\|
bogdanm	0:9b334a45a8ff	154	\| 0 \| 1 \| \| SB \| 7 bit data \| PB \| STB \| \|
bogdanm	0:9b334a45a8ff	155	\|---------\|-----------\|---------------------------------------\|
bogdanm	0:9b334a45a8ff	156	\| 1 \| 0 \| \| SB \| 9 bit data \| STB \| \|
bogdanm	0:9b334a45a8ff	157	\|---------\|-----------\|---------------------------------------\|
bogdanm	0:9b334a45a8ff	158	\| 1 \| 1 \| \| SB \| 8 bit data \| PB \| STB \| \|
bogdanm	0:9b334a45a8ff	159	+-------------------------------------------------------------+
bogdanm	0:9b334a45a8ff	160	[..]
bogdanm	0:9b334a45a8ff	161	(++) Hardware flow control.
bogdanm	0:9b334a45a8ff	162	(++) Receiver/transmitter modes.
bogdanm	0:9b334a45a8ff	163	[..] The USART_Init() function follows the USART asynchronous configuration
bogdanm	0:9b334a45a8ff	164	procedure(details for the procedure are available in reference manual.
bogdanm	0:9b334a45a8ff	165	(+) For the synchronous mode in addition to the asynchronous mode parameters
bogdanm	0:9b334a45a8ff	166	these parameters should be also configured:
bogdanm	0:9b334a45a8ff	167	(++) USART Clock Enabled.
bogdanm	0:9b334a45a8ff	168	(++) USART polarity.
bogdanm	0:9b334a45a8ff	169	(++) USART phase.
bogdanm	0:9b334a45a8ff	170	(++) USART LastBit.
bogdanm	0:9b334a45a8ff	171	[..] These parameters can be configured using the USART_ClockInit() function.
bogdanm	0:9b334a45a8ff	172
bogdanm	0:9b334a45a8ff	173	@endverbatim
bogdanm	0:9b334a45a8ff	174	* @{
bogdanm	0:9b334a45a8ff	175	*/
bogdanm	0:9b334a45a8ff	176
bogdanm	0:9b334a45a8ff	177	/**
bogdanm	0:9b334a45a8ff	178	* @brief Deinitializes the USARTx peripheral registers to their default reset values.
bogdanm	0:9b334a45a8ff	179	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	180	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	181	* @retval None
bogdanm	0:9b334a45a8ff	182	*/
bogdanm	0:9b334a45a8ff	183	void USART_DeInit(USART_TypeDef* USARTx)
bogdanm	0:9b334a45a8ff	184	{
bogdanm	0:9b334a45a8ff	185	/* Check the parameters */
bogdanm	0:9b334a45a8ff	186	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	187
bogdanm	0:9b334a45a8ff	188	if (USARTx == USART1)
bogdanm	0:9b334a45a8ff	189	{
bogdanm	0:9b334a45a8ff	190	RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, ENABLE);
bogdanm	0:9b334a45a8ff	191	RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, DISABLE);
bogdanm	0:9b334a45a8ff	192	}
bogdanm	0:9b334a45a8ff	193	else if (USARTx == USART2)
bogdanm	0:9b334a45a8ff	194	{
bogdanm	0:9b334a45a8ff	195	RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, ENABLE);
bogdanm	0:9b334a45a8ff	196	RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, DISABLE);
bogdanm	0:9b334a45a8ff	197	}
bogdanm	0:9b334a45a8ff	198	else if (USARTx == USART3)
bogdanm	0:9b334a45a8ff	199	{
bogdanm	0:9b334a45a8ff	200	RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, ENABLE);
bogdanm	0:9b334a45a8ff	201	RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, DISABLE);
bogdanm	0:9b334a45a8ff	202	}
bogdanm	0:9b334a45a8ff	203	else if (USARTx == UART4)
bogdanm	0:9b334a45a8ff	204	{
bogdanm	0:9b334a45a8ff	205	RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART4, ENABLE);
bogdanm	0:9b334a45a8ff	206	RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART4, DISABLE);
bogdanm	0:9b334a45a8ff	207	}
bogdanm	0:9b334a45a8ff	208	else
bogdanm	0:9b334a45a8ff	209	{
bogdanm	0:9b334a45a8ff	210	if (USARTx == UART5)
bogdanm	0:9b334a45a8ff	211	{
bogdanm	0:9b334a45a8ff	212	RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART5, ENABLE);
bogdanm	0:9b334a45a8ff	213	RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART5, DISABLE);
bogdanm	0:9b334a45a8ff	214	}
bogdanm	0:9b334a45a8ff	215	}
bogdanm	0:9b334a45a8ff	216	}
bogdanm	0:9b334a45a8ff	217
bogdanm	0:9b334a45a8ff	218	/**
bogdanm	0:9b334a45a8ff	219	* @brief Initializes the USARTx peripheral according to the specified
bogdanm	0:9b334a45a8ff	220	* parameters in the USART_InitStruct .
bogdanm	0:9b334a45a8ff	221	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	222	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	223	* @param USART_InitStruct: pointer to a USART_InitTypeDef structure
bogdanm	0:9b334a45a8ff	224	* that contains the configuration information for the specified USART peripheral.
bogdanm	0:9b334a45a8ff	225	* @retval None
bogdanm	0:9b334a45a8ff	226	*/
bogdanm	0:9b334a45a8ff	227	void USART_Init(USART_TypeDef* USARTx, USART_InitTypeDef* USART_InitStruct)
bogdanm	0:9b334a45a8ff	228	{
bogdanm	0:9b334a45a8ff	229	uint32_t divider = 0, apbclock = 0, tmpreg = 0;
bogdanm	0:9b334a45a8ff	230	RCC_ClocksTypeDef RCC_ClocksStatus;
bogdanm	0:9b334a45a8ff	231
bogdanm	0:9b334a45a8ff	232	/* Check the parameters */
bogdanm	0:9b334a45a8ff	233	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	234	assert_param(IS_USART_BAUDRATE(USART_InitStruct->USART_BaudRate));
bogdanm	0:9b334a45a8ff	235	assert_param(IS_USART_WORD_LENGTH(USART_InitStruct->USART_WordLength));
bogdanm	0:9b334a45a8ff	236	assert_param(IS_USART_STOPBITS(USART_InitStruct->USART_StopBits));
bogdanm	0:9b334a45a8ff	237	assert_param(IS_USART_PARITY(USART_InitStruct->USART_Parity));
bogdanm	0:9b334a45a8ff	238	assert_param(IS_USART_MODE(USART_InitStruct->USART_Mode));
bogdanm	0:9b334a45a8ff	239	assert_param(IS_USART_HARDWARE_FLOW_CONTROL(USART_InitStruct->USART_HardwareFlowControl));
bogdanm	0:9b334a45a8ff	240
bogdanm	0:9b334a45a8ff	241	/* Disable USART */
bogdanm	0:9b334a45a8ff	242	USARTx->CR1 &= (uint32_t)~((uint32_t)USART_CR1_UE);
bogdanm	0:9b334a45a8ff	243
bogdanm	0:9b334a45a8ff	244	/---------------------------- USART CR2 Configuration -----------------------/
bogdanm	0:9b334a45a8ff	245	tmpreg = USARTx->CR2;
bogdanm	0:9b334a45a8ff	246	/* Clear STOP[13:12] bits */
bogdanm	0:9b334a45a8ff	247	tmpreg &= (uint32_t)~((uint32_t)USART_CR2_STOP);
bogdanm	0:9b334a45a8ff	248
bogdanm	0:9b334a45a8ff	249	/* Configure the USART Stop Bits, Clock, CPOL, CPHA and LastBit ------------*/
bogdanm	0:9b334a45a8ff	250	/* Set STOP[13:12] bits according to USART_StopBits value */
bogdanm	0:9b334a45a8ff	251	tmpreg \|= (uint32_t)USART_InitStruct->USART_StopBits;
bogdanm	0:9b334a45a8ff	252
bogdanm	0:9b334a45a8ff	253	/* Write to USART CR2 */
bogdanm	0:9b334a45a8ff	254	USARTx->CR2 = tmpreg;
bogdanm	0:9b334a45a8ff	255
bogdanm	0:9b334a45a8ff	256	/---------------------------- USART CR1 Configuration -----------------------/
bogdanm	0:9b334a45a8ff	257	tmpreg = USARTx->CR1;
bogdanm	0:9b334a45a8ff	258	/* Clear M, PCE, PS, TE and RE bits */
bogdanm	0:9b334a45a8ff	259	tmpreg &= (uint32_t)~((uint32_t)CR1_CLEAR_MASK);
bogdanm	0:9b334a45a8ff	260
bogdanm	0:9b334a45a8ff	261	/* Configure the USART Word Length, Parity and mode ----------------------- */
bogdanm	0:9b334a45a8ff	262	/* Set the M bits according to USART_WordLength value */
bogdanm	0:9b334a45a8ff	263	/* Set PCE and PS bits according to USART_Parity value */
bogdanm	0:9b334a45a8ff	264	/* Set TE and RE bits according to USART_Mode value */
bogdanm	0:9b334a45a8ff	265	tmpreg \|= (uint32_t)USART_InitStruct->USART_WordLength \| USART_InitStruct->USART_Parity \|
bogdanm	0:9b334a45a8ff	266	USART_InitStruct->USART_Mode;
bogdanm	0:9b334a45a8ff	267
bogdanm	0:9b334a45a8ff	268	/* Write to USART CR1 */
bogdanm	0:9b334a45a8ff	269	USARTx->CR1 = tmpreg;
bogdanm	0:9b334a45a8ff	270
bogdanm	0:9b334a45a8ff	271	/---------------------------- USART CR3 Configuration -----------------------/
bogdanm	0:9b334a45a8ff	272	tmpreg = USARTx->CR3;
bogdanm	0:9b334a45a8ff	273	/* Clear CTSE and RTSE bits */
bogdanm	0:9b334a45a8ff	274	tmpreg &= (uint32_t)~((uint32_t)CR3_CLEAR_MASK);
bogdanm	0:9b334a45a8ff	275
bogdanm	0:9b334a45a8ff	276	/* Configure the USART HFC -------------------------------------------------*/
bogdanm	0:9b334a45a8ff	277	/* Set CTSE and RTSE bits according to USART_HardwareFlowControl value */
bogdanm	0:9b334a45a8ff	278	tmpreg \|= USART_InitStruct->USART_HardwareFlowControl;
bogdanm	0:9b334a45a8ff	279
bogdanm	0:9b334a45a8ff	280	/* Write to USART CR3 */
bogdanm	0:9b334a45a8ff	281	USARTx->CR3 = tmpreg;
bogdanm	0:9b334a45a8ff	282
bogdanm	0:9b334a45a8ff	283	/---------------------------- USART BRR Configuration -----------------------/
bogdanm	0:9b334a45a8ff	284	/* Configure the USART Baud Rate -------------------------------------------*/
bogdanm	0:9b334a45a8ff	285	RCC_GetClocksFreq(&RCC_ClocksStatus);
bogdanm	0:9b334a45a8ff	286
bogdanm	0:9b334a45a8ff	287	if (USARTx == USART1)
bogdanm	0:9b334a45a8ff	288	{
bogdanm	0:9b334a45a8ff	289	apbclock = RCC_ClocksStatus.USART1CLK_Frequency;
bogdanm	0:9b334a45a8ff	290	}
bogdanm	0:9b334a45a8ff	291	else if (USARTx == USART2)
bogdanm	0:9b334a45a8ff	292	{
bogdanm	0:9b334a45a8ff	293	apbclock = RCC_ClocksStatus.USART2CLK_Frequency;
bogdanm	0:9b334a45a8ff	294	}
bogdanm	0:9b334a45a8ff	295	else if (USARTx == USART3)
bogdanm	0:9b334a45a8ff	296	{
bogdanm	0:9b334a45a8ff	297	apbclock = RCC_ClocksStatus.USART3CLK_Frequency;
bogdanm	0:9b334a45a8ff	298	}
bogdanm	0:9b334a45a8ff	299	else if (USARTx == UART4)
bogdanm	0:9b334a45a8ff	300	{
bogdanm	0:9b334a45a8ff	301	apbclock = RCC_ClocksStatus.UART4CLK_Frequency;
bogdanm	0:9b334a45a8ff	302	}
bogdanm	0:9b334a45a8ff	303	else
bogdanm	0:9b334a45a8ff	304	{
bogdanm	0:9b334a45a8ff	305	apbclock = RCC_ClocksStatus.UART5CLK_Frequency;
bogdanm	0:9b334a45a8ff	306	}
bogdanm	0:9b334a45a8ff	307
bogdanm	0:9b334a45a8ff	308	/* Determine the integer part */
bogdanm	0:9b334a45a8ff	309	if ((USARTx->CR1 & USART_CR1_OVER8) != 0)
bogdanm	0:9b334a45a8ff	310	{
bogdanm	0:9b334a45a8ff	311	/* (divider * 10) computing in case Oversampling mode is 8 Samples */
bogdanm	0:9b334a45a8ff	312	divider = (uint32_t)((2 * apbclock) / (USART_InitStruct->USART_BaudRate));
bogdanm	0:9b334a45a8ff	313	tmpreg = (uint32_t)((2 * apbclock) % (USART_InitStruct->USART_BaudRate));
bogdanm	0:9b334a45a8ff	314	}
bogdanm	0:9b334a45a8ff	315	else /* if ((USARTx->CR1 & CR1_OVER8_Set) == 0) */
bogdanm	0:9b334a45a8ff	316	{
bogdanm	0:9b334a45a8ff	317	/* (divider * 10) computing in case Oversampling mode is 16 Samples */
bogdanm	0:9b334a45a8ff	318	divider = (uint32_t)((apbclock) / (USART_InitStruct->USART_BaudRate));
bogdanm	0:9b334a45a8ff	319	tmpreg = (uint32_t)((apbclock) % (USART_InitStruct->USART_BaudRate));
bogdanm	0:9b334a45a8ff	320	}
bogdanm	0:9b334a45a8ff	321
bogdanm	0:9b334a45a8ff	322	/* round the divider : if fractional part i greater than 0.5 increment divider */
bogdanm	0:9b334a45a8ff	323	if (tmpreg >= (USART_InitStruct->USART_BaudRate) / 2)
bogdanm	0:9b334a45a8ff	324	{
bogdanm	0:9b334a45a8ff	325	divider++;
bogdanm	0:9b334a45a8ff	326	}
bogdanm	0:9b334a45a8ff	327
bogdanm	0:9b334a45a8ff	328	/* Implement the divider in case Oversampling mode is 8 Samples */
bogdanm	0:9b334a45a8ff	329	if ((USARTx->CR1 & USART_CR1_OVER8) != 0)
bogdanm	0:9b334a45a8ff	330	{
bogdanm	0:9b334a45a8ff	331	/* get the LSB of divider and shift it to the right by 1 bit */
bogdanm	0:9b334a45a8ff	332	tmpreg = (divider & (uint16_t)0x000F) >> 1;
bogdanm	0:9b334a45a8ff	333
bogdanm	0:9b334a45a8ff	334	/* update the divider value */
bogdanm	0:9b334a45a8ff	335	divider = (divider & (uint16_t)0xFFF0) \| tmpreg;
bogdanm	0:9b334a45a8ff	336	}
bogdanm	0:9b334a45a8ff	337
bogdanm	0:9b334a45a8ff	338	/* Write to USART BRR */
bogdanm	0:9b334a45a8ff	339	USARTx->BRR = (uint16_t)divider;
bogdanm	0:9b334a45a8ff	340	}
bogdanm	0:9b334a45a8ff	341
bogdanm	0:9b334a45a8ff	342	/**
bogdanm	0:9b334a45a8ff	343	* @brief Fills each USART_InitStruct member with its default value.
bogdanm	0:9b334a45a8ff	344	* @param USART_InitStruct: pointer to a USART_InitTypeDef structure
bogdanm	0:9b334a45a8ff	345	* which will be initialized.
bogdanm	0:9b334a45a8ff	346	* @retval None
bogdanm	0:9b334a45a8ff	347	*/
bogdanm	0:9b334a45a8ff	348	void USART_StructInit(USART_InitTypeDef* USART_InitStruct)
bogdanm	0:9b334a45a8ff	349	{
bogdanm	0:9b334a45a8ff	350	/* USART_InitStruct members default value */
bogdanm	0:9b334a45a8ff	351	USART_InitStruct->USART_BaudRate = 9600;
bogdanm	0:9b334a45a8ff	352	USART_InitStruct->USART_WordLength = USART_WordLength_8b;
bogdanm	0:9b334a45a8ff	353	USART_InitStruct->USART_StopBits = USART_StopBits_1;
bogdanm	0:9b334a45a8ff	354	USART_InitStruct->USART_Parity = USART_Parity_No ;
bogdanm	0:9b334a45a8ff	355	USART_InitStruct->USART_Mode = USART_Mode_Rx \| USART_Mode_Tx;
bogdanm	0:9b334a45a8ff	356	USART_InitStruct->USART_HardwareFlowControl = USART_HardwareFlowControl_None;
bogdanm	0:9b334a45a8ff	357	}
bogdanm	0:9b334a45a8ff	358
bogdanm	0:9b334a45a8ff	359	/**
bogdanm	0:9b334a45a8ff	360	* @brief Initializes the USARTx peripheral Clock according to the
bogdanm	0:9b334a45a8ff	361	* specified parameters in the USART_ClockInitStruct.
bogdanm	0:9b334a45a8ff	362	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	363	* following values: USART1 or USART2 or USART3.
bogdanm	0:9b334a45a8ff	364	* @param USART_ClockInitStruct: pointer to a USART_ClockInitTypeDef
bogdanm	0:9b334a45a8ff	365	* structure that contains the configuration information for the specified
bogdanm	0:9b334a45a8ff	366	* USART peripheral.
bogdanm	0:9b334a45a8ff	367	* @retval None
bogdanm	0:9b334a45a8ff	368	*/
bogdanm	0:9b334a45a8ff	369	void USART_ClockInit(USART_TypeDef* USARTx, USART_ClockInitTypeDef* USART_ClockInitStruct)
bogdanm	0:9b334a45a8ff	370	{
bogdanm	0:9b334a45a8ff	371	uint32_t tmpreg = 0;
bogdanm	0:9b334a45a8ff	372	/* Check the parameters */
bogdanm	0:9b334a45a8ff	373	assert_param(IS_USART_123_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	374	assert_param(IS_USART_CLOCK(USART_ClockInitStruct->USART_Clock));
bogdanm	0:9b334a45a8ff	375	assert_param(IS_USART_CPOL(USART_ClockInitStruct->USART_CPOL));
bogdanm	0:9b334a45a8ff	376	assert_param(IS_USART_CPHA(USART_ClockInitStruct->USART_CPHA));
bogdanm	0:9b334a45a8ff	377	assert_param(IS_USART_LASTBIT(USART_ClockInitStruct->USART_LastBit));
bogdanm	0:9b334a45a8ff	378	/---------------------------- USART CR2 Configuration -----------------------/
bogdanm	0:9b334a45a8ff	379	tmpreg = USARTx->CR2;
bogdanm	0:9b334a45a8ff	380	/* Clear CLKEN, CPOL, CPHA, LBCL and SSM bits */
bogdanm	0:9b334a45a8ff	381	tmpreg &= (uint32_t)~((uint32_t)CR2_CLOCK_CLEAR_MASK);
bogdanm	0:9b334a45a8ff	382	/* Configure the USART Clock, CPOL, CPHA, LastBit and SSM ------------*/
bogdanm	0:9b334a45a8ff	383	/* Set CLKEN bit according to USART_Clock value */
bogdanm	0:9b334a45a8ff	384	/* Set CPOL bit according to USART_CPOL value */
bogdanm	0:9b334a45a8ff	385	/* Set CPHA bit according to USART_CPHA value */
bogdanm	0:9b334a45a8ff	386	/* Set LBCL bit according to USART_LastBit value */
bogdanm	0:9b334a45a8ff	387	tmpreg \|= (uint32_t)(USART_ClockInitStruct->USART_Clock \| USART_ClockInitStruct->USART_CPOL \|
bogdanm	0:9b334a45a8ff	388	USART_ClockInitStruct->USART_CPHA \| USART_ClockInitStruct->USART_LastBit);
bogdanm	0:9b334a45a8ff	389	/* Write to USART CR2 */
bogdanm	0:9b334a45a8ff	390	USARTx->CR2 = tmpreg;
bogdanm	0:9b334a45a8ff	391	}
bogdanm	0:9b334a45a8ff	392
bogdanm	0:9b334a45a8ff	393	/**
bogdanm	0:9b334a45a8ff	394	* @brief Fills each USART_ClockInitStruct member with its default value.
bogdanm	0:9b334a45a8ff	395	* @param USART_ClockInitStruct: pointer to a USART_ClockInitTypeDef
bogdanm	0:9b334a45a8ff	396	* structure which will be initialized.
bogdanm	0:9b334a45a8ff	397	* @retval None
bogdanm	0:9b334a45a8ff	398	*/
bogdanm	0:9b334a45a8ff	399	void USART_ClockStructInit(USART_ClockInitTypeDef* USART_ClockInitStruct)
bogdanm	0:9b334a45a8ff	400	{
bogdanm	0:9b334a45a8ff	401	/* USART_ClockInitStruct members default value */
bogdanm	0:9b334a45a8ff	402	USART_ClockInitStruct->USART_Clock = USART_Clock_Disable;
bogdanm	0:9b334a45a8ff	403	USART_ClockInitStruct->USART_CPOL = USART_CPOL_Low;
bogdanm	0:9b334a45a8ff	404	USART_ClockInitStruct->USART_CPHA = USART_CPHA_1Edge;
bogdanm	0:9b334a45a8ff	405	USART_ClockInitStruct->USART_LastBit = USART_LastBit_Disable;
bogdanm	0:9b334a45a8ff	406	}
bogdanm	0:9b334a45a8ff	407
bogdanm	0:9b334a45a8ff	408	/**
bogdanm	0:9b334a45a8ff	409	* @brief Enables or disables the specified USART peripheral.
bogdanm	0:9b334a45a8ff	410	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	411	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	412	* @param NewState: new state of the USARTx peripheral.
bogdanm	0:9b334a45a8ff	413	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	414	* @retval None
bogdanm	0:9b334a45a8ff	415	*/
bogdanm	0:9b334a45a8ff	416	void USART_Cmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	417	{
bogdanm	0:9b334a45a8ff	418	/* Check the parameters */
bogdanm	0:9b334a45a8ff	419	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	420	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	421
bogdanm	0:9b334a45a8ff	422	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	423	{
bogdanm	0:9b334a45a8ff	424	/* Enable the selected USART by setting the UE bit in the CR1 register */
bogdanm	0:9b334a45a8ff	425	USARTx->CR1 \|= USART_CR1_UE;
bogdanm	0:9b334a45a8ff	426	}
bogdanm	0:9b334a45a8ff	427	else
bogdanm	0:9b334a45a8ff	428	{
bogdanm	0:9b334a45a8ff	429	/* Disable the selected USART by clearing the UE bit in the CR1 register */
bogdanm	0:9b334a45a8ff	430	USARTx->CR1 &= (uint32_t)~((uint32_t)USART_CR1_UE);
bogdanm	0:9b334a45a8ff	431	}
bogdanm	0:9b334a45a8ff	432	}
bogdanm	0:9b334a45a8ff	433
bogdanm	0:9b334a45a8ff	434	/**
bogdanm	0:9b334a45a8ff	435	* @brief Enables or disables the USART's transmitter or receiver.
bogdanm	0:9b334a45a8ff	436	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	437	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	438	* @param USART_Direction: specifies the USART direction.
bogdanm	0:9b334a45a8ff	439	* This parameter can be any combination of the following values:
bogdanm	0:9b334a45a8ff	440	* @arg USART_Mode_Tx: USART Transmitter
bogdanm	0:9b334a45a8ff	441	* @arg USART_Mode_Rx: USART Receiver
bogdanm	0:9b334a45a8ff	442	* @param NewState: new state of the USART transfer direction.
bogdanm	0:9b334a45a8ff	443	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	444	* @retval None
bogdanm	0:9b334a45a8ff	445	*/
bogdanm	0:9b334a45a8ff	446	void USART_DirectionModeCmd(USART_TypeDef* USARTx, uint32_t USART_DirectionMode, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	447	{
bogdanm	0:9b334a45a8ff	448	/* Check the parameters */
bogdanm	0:9b334a45a8ff	449	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	450	assert_param(IS_USART_MODE(USART_DirectionMode));
bogdanm	0:9b334a45a8ff	451	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	452
bogdanm	0:9b334a45a8ff	453	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	454	{
bogdanm	0:9b334a45a8ff	455	/* Enable the USART's transfer interface by setting the TE and/or RE bits
bogdanm	0:9b334a45a8ff	456	in the USART CR1 register */
bogdanm	0:9b334a45a8ff	457	USARTx->CR1 \|= USART_DirectionMode;
bogdanm	0:9b334a45a8ff	458	}
bogdanm	0:9b334a45a8ff	459	else
bogdanm	0:9b334a45a8ff	460	{
bogdanm	0:9b334a45a8ff	461	/* Disable the USART's transfer interface by clearing the TE and/or RE bits
bogdanm	0:9b334a45a8ff	462	in the USART CR3 register */
bogdanm	0:9b334a45a8ff	463	USARTx->CR1 &= (uint32_t)~USART_DirectionMode;
bogdanm	0:9b334a45a8ff	464	}
bogdanm	0:9b334a45a8ff	465	}
bogdanm	0:9b334a45a8ff	466
bogdanm	0:9b334a45a8ff	467	/**
bogdanm	0:9b334a45a8ff	468	* @brief Enables or disables the USART's 8x oversampling mode.
bogdanm	0:9b334a45a8ff	469	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	470	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	471	* @param NewState: new state of the USART 8x oversampling mode.
bogdanm	0:9b334a45a8ff	472	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	473	* @note
bogdanm	0:9b334a45a8ff	474	* This function has to be called before calling USART_Init()
bogdanm	0:9b334a45a8ff	475	* function in order to have correct baudrate Divider value.
bogdanm	0:9b334a45a8ff	476	* @retval None
bogdanm	0:9b334a45a8ff	477	*/
bogdanm	0:9b334a45a8ff	478	void USART_OverSampling8Cmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	479	{
bogdanm	0:9b334a45a8ff	480	/* Check the parameters */
bogdanm	0:9b334a45a8ff	481	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	482	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	483
bogdanm	0:9b334a45a8ff	484	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	485	{
bogdanm	0:9b334a45a8ff	486	/* Enable the 8x Oversampling mode by setting the OVER8 bit in the CR1 register */
bogdanm	0:9b334a45a8ff	487	USARTx->CR1 \|= USART_CR1_OVER8;
bogdanm	0:9b334a45a8ff	488	}
bogdanm	0:9b334a45a8ff	489	else
bogdanm	0:9b334a45a8ff	490	{
bogdanm	0:9b334a45a8ff	491	/* Disable the 8x Oversampling mode by clearing the OVER8 bit in the CR1 register */
bogdanm	0:9b334a45a8ff	492	USARTx->CR1 &= (uint32_t)~((uint32_t)USART_CR1_OVER8);
bogdanm	0:9b334a45a8ff	493	}
bogdanm	0:9b334a45a8ff	494	}
bogdanm	0:9b334a45a8ff	495
bogdanm	0:9b334a45a8ff	496	/**
bogdanm	0:9b334a45a8ff	497	* @brief Enables or disables the USART's one bit sampling method.
bogdanm	0:9b334a45a8ff	498	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	499	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	500	* @param NewState: new state of the USART one bit sampling method.
bogdanm	0:9b334a45a8ff	501	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	502	* @note
bogdanm	0:9b334a45a8ff	503	* This function has to be called before calling USART_Cmd() function.
bogdanm	0:9b334a45a8ff	504	* @retval None
bogdanm	0:9b334a45a8ff	505	*/
bogdanm	0:9b334a45a8ff	506	void USART_OneBitMethodCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	507	{
bogdanm	0:9b334a45a8ff	508	/* Check the parameters */
bogdanm	0:9b334a45a8ff	509	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	510	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	511
bogdanm	0:9b334a45a8ff	512	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	513	{
bogdanm	0:9b334a45a8ff	514	/* Enable the one bit method by setting the ONEBIT bit in the CR3 register */
bogdanm	0:9b334a45a8ff	515	USARTx->CR3 \|= USART_CR3_ONEBIT;
bogdanm	0:9b334a45a8ff	516	}
bogdanm	0:9b334a45a8ff	517	else
bogdanm	0:9b334a45a8ff	518	{
bogdanm	0:9b334a45a8ff	519	/* Disable the one bit method by clearing the ONEBIT bit in the CR3 register */
bogdanm	0:9b334a45a8ff	520	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_ONEBIT);
bogdanm	0:9b334a45a8ff	521	}
bogdanm	0:9b334a45a8ff	522	}
bogdanm	0:9b334a45a8ff	523
bogdanm	0:9b334a45a8ff	524	/**
bogdanm	0:9b334a45a8ff	525	* @brief Enables or disables the USART's most significant bit first
bogdanm	0:9b334a45a8ff	526	* transmitted/received following the start bit.
bogdanm	0:9b334a45a8ff	527	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	528	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	529	* @param NewState: new state of the USART most significant bit first
bogdanm	0:9b334a45a8ff	530	* transmitted/received following the start bit.
bogdanm	0:9b334a45a8ff	531	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	532	* @note
bogdanm	0:9b334a45a8ff	533	* This function has to be called before calling USART_Cmd() function.
bogdanm	0:9b334a45a8ff	534	* @retval None
bogdanm	0:9b334a45a8ff	535	*/
bogdanm	0:9b334a45a8ff	536	void USART_MSBFirstCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	537	{
bogdanm	0:9b334a45a8ff	538	/* Check the parameters */
bogdanm	0:9b334a45a8ff	539	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	540	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	541
bogdanm	0:9b334a45a8ff	542	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	543	{
bogdanm	0:9b334a45a8ff	544	/* Enable the most significant bit first transmitted/received following the
bogdanm	0:9b334a45a8ff	545	start bit by setting the MSBFIRST bit in the CR2 register */
bogdanm	0:9b334a45a8ff	546	USARTx->CR2 \|= USART_CR2_MSBFIRST;
bogdanm	0:9b334a45a8ff	547	}
bogdanm	0:9b334a45a8ff	548	else
bogdanm	0:9b334a45a8ff	549	{
bogdanm	0:9b334a45a8ff	550	/* Disable the most significant bit first transmitted/received following the
bogdanm	0:9b334a45a8ff	551	start bit by clearing the MSBFIRST bit in the CR2 register */
bogdanm	0:9b334a45a8ff	552	USARTx->CR2 &= (uint32_t)~((uint32_t)USART_CR2_MSBFIRST);
bogdanm	0:9b334a45a8ff	553	}
bogdanm	0:9b334a45a8ff	554	}
bogdanm	0:9b334a45a8ff	555
bogdanm	0:9b334a45a8ff	556	/**
bogdanm	0:9b334a45a8ff	557	* @brief Enables or disables the binary data inversion.
bogdanm	0:9b334a45a8ff	558	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	559	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	560	* @param NewState: new defined levels for the USART data.
bogdanm	0:9b334a45a8ff	561	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	562	* @arg ENABLE: Logical data from the data register are send/received in negative
bogdanm	0:9b334a45a8ff	563	* logic. (1=L, 0=H). The parity bit is also inverted.
bogdanm	0:9b334a45a8ff	564	* @arg DISABLE: Logical data from the data register are send/received in positive
bogdanm	0:9b334a45a8ff	565	* logic. (1=H, 0=L)
bogdanm	0:9b334a45a8ff	566	* @note
bogdanm	0:9b334a45a8ff	567	* This function has to be called before calling USART_Cmd() function.
bogdanm	0:9b334a45a8ff	568	* @retval None
bogdanm	0:9b334a45a8ff	569	*/
bogdanm	0:9b334a45a8ff	570	void USART_DataInvCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	571	{
bogdanm	0:9b334a45a8ff	572	/* Check the parameters */
bogdanm	0:9b334a45a8ff	573	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	574	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	575
bogdanm	0:9b334a45a8ff	576	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	577	{
bogdanm	0:9b334a45a8ff	578	/* Enable the binary data inversion feature by setting the DATAINV bit in
bogdanm	0:9b334a45a8ff	579	the CR2 register */
bogdanm	0:9b334a45a8ff	580	USARTx->CR2 \|= USART_CR2_DATAINV;
bogdanm	0:9b334a45a8ff	581	}
bogdanm	0:9b334a45a8ff	582	else
bogdanm	0:9b334a45a8ff	583	{
bogdanm	0:9b334a45a8ff	584	/* Disable the binary data inversion feature by clearing the DATAINV bit in
bogdanm	0:9b334a45a8ff	585	the CR2 register */
bogdanm	0:9b334a45a8ff	586	USARTx->CR2 &= (uint32_t)~((uint32_t)USART_CR2_DATAINV);
bogdanm	0:9b334a45a8ff	587	}
bogdanm	0:9b334a45a8ff	588	}
bogdanm	0:9b334a45a8ff	589
bogdanm	0:9b334a45a8ff	590	/**
bogdanm	0:9b334a45a8ff	591	* @brief Enables or disables the Pin(s) active level inversion.
bogdanm	0:9b334a45a8ff	592	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	593	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	594	* @param USART_InvPin: specifies the USART pin(s) to invert.
bogdanm	0:9b334a45a8ff	595	* This parameter can be any combination of the following values:
bogdanm	0:9b334a45a8ff	596	* @arg USART_InvPin_Tx: USART Tx pin active level inversion.
bogdanm	0:9b334a45a8ff	597	* @arg USART_InvPin_Rx: USART Rx pin active level inversion.
bogdanm	0:9b334a45a8ff	598	* @param NewState: new active level status for the USART pin(s).
bogdanm	0:9b334a45a8ff	599	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	600	* - ENABLE: pin(s) signal values are inverted (Vdd =0, Gnd =1).
bogdanm	0:9b334a45a8ff	601	* - DISABLE: pin(s) signal works using the standard logic levels (Vdd =1, Gnd =0).
bogdanm	0:9b334a45a8ff	602	* @note
bogdanm	0:9b334a45a8ff	603	* This function has to be called before calling USART_Cmd() function.
bogdanm	0:9b334a45a8ff	604	* @retval None
bogdanm	0:9b334a45a8ff	605	*/
bogdanm	0:9b334a45a8ff	606	void USART_InvPinCmd(USART_TypeDef* USARTx, uint32_t USART_InvPin, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	607	{
bogdanm	0:9b334a45a8ff	608	/* Check the parameters */
bogdanm	0:9b334a45a8ff	609	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	610	assert_param(IS_USART_INVERSTION_PIN(USART_InvPin));
bogdanm	0:9b334a45a8ff	611	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	612
bogdanm	0:9b334a45a8ff	613	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	614	{
bogdanm	0:9b334a45a8ff	615	/* Enable the active level inversion for selected pins by setting the TXINV
bogdanm	0:9b334a45a8ff	616	and/or RXINV bits in the USART CR2 register */
bogdanm	0:9b334a45a8ff	617	USARTx->CR2 \|= USART_InvPin;
bogdanm	0:9b334a45a8ff	618	}
bogdanm	0:9b334a45a8ff	619	else
bogdanm	0:9b334a45a8ff	620	{
bogdanm	0:9b334a45a8ff	621	/* Disable the active level inversion for selected requests by clearing the
bogdanm	0:9b334a45a8ff	622	TXINV and/or RXINV bits in the USART CR2 register */
bogdanm	0:9b334a45a8ff	623	USARTx->CR2 &= (uint32_t)~USART_InvPin;
bogdanm	0:9b334a45a8ff	624	}
bogdanm	0:9b334a45a8ff	625	}
bogdanm	0:9b334a45a8ff	626
bogdanm	0:9b334a45a8ff	627	/**
bogdanm	0:9b334a45a8ff	628	* @brief Enables or disables the swap Tx/Rx pins.
bogdanm	0:9b334a45a8ff	629	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	630	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	631	* @param NewState: new state of the USARTx TX/RX pins pinout.
bogdanm	0:9b334a45a8ff	632	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	633	* @arg ENABLE: The TX and RX pins functions are swapped.
bogdanm	0:9b334a45a8ff	634	* @arg DISABLE: TX/RX pins are used as defined in standard pinout
bogdanm	0:9b334a45a8ff	635	* @note
bogdanm	0:9b334a45a8ff	636	* This function has to be called before calling USART_Cmd() function.
bogdanm	0:9b334a45a8ff	637	* @retval None
bogdanm	0:9b334a45a8ff	638	*/
bogdanm	0:9b334a45a8ff	639	void USART_SWAPPinCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	640	{
bogdanm	0:9b334a45a8ff	641	/* Check the parameters */
bogdanm	0:9b334a45a8ff	642	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	643	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	644
bogdanm	0:9b334a45a8ff	645	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	646	{
bogdanm	0:9b334a45a8ff	647	/* Enable the SWAP feature by setting the SWAP bit in the CR2 register */
bogdanm	0:9b334a45a8ff	648	USARTx->CR2 \|= USART_CR2_SWAP;
bogdanm	0:9b334a45a8ff	649	}
bogdanm	0:9b334a45a8ff	650	else
bogdanm	0:9b334a45a8ff	651	{
bogdanm	0:9b334a45a8ff	652	/* Disable the SWAP feature by clearing the SWAP bit in the CR2 register */
bogdanm	0:9b334a45a8ff	653	USARTx->CR2 &= (uint32_t)~((uint32_t)USART_CR2_SWAP);
bogdanm	0:9b334a45a8ff	654	}
bogdanm	0:9b334a45a8ff	655	}
bogdanm	0:9b334a45a8ff	656
bogdanm	0:9b334a45a8ff	657	/**
bogdanm	0:9b334a45a8ff	658	* @brief Enables or disables the receiver Time Out feature.
bogdanm	0:9b334a45a8ff	659	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	660	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	661	* @param NewState: new state of the USARTx receiver Time Out.
bogdanm	0:9b334a45a8ff	662	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	663	* @retval None
bogdanm	0:9b334a45a8ff	664	*/
bogdanm	0:9b334a45a8ff	665	void USART_ReceiverTimeOutCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	666	{
bogdanm	0:9b334a45a8ff	667	/* Check the parameters */
bogdanm	0:9b334a45a8ff	668	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	669	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	670
bogdanm	0:9b334a45a8ff	671	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	672	{
bogdanm	0:9b334a45a8ff	673	/* Enable the receiver time out feature by setting the RTOEN bit in the CR2
bogdanm	0:9b334a45a8ff	674	register */
bogdanm	0:9b334a45a8ff	675	USARTx->CR2 \|= USART_CR2_RTOEN;
bogdanm	0:9b334a45a8ff	676	}
bogdanm	0:9b334a45a8ff	677	else
bogdanm	0:9b334a45a8ff	678	{
bogdanm	0:9b334a45a8ff	679	/* Disable the receiver time out feature by clearing the RTOEN bit in the CR2
bogdanm	0:9b334a45a8ff	680	register */
bogdanm	0:9b334a45a8ff	681	USARTx->CR2 &= (uint32_t)~((uint32_t)USART_CR2_RTOEN);
bogdanm	0:9b334a45a8ff	682	}
bogdanm	0:9b334a45a8ff	683	}
bogdanm	0:9b334a45a8ff	684
bogdanm	0:9b334a45a8ff	685	/**
bogdanm	0:9b334a45a8ff	686	* @brief Sets the receiver Time Out value.
bogdanm	0:9b334a45a8ff	687	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	688	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	689	* @param USART_ReceiverTimeOut: specifies the Receiver Time Out value.
bogdanm	0:9b334a45a8ff	690	* @retval None
bogdanm	0:9b334a45a8ff	691	*/
bogdanm	0:9b334a45a8ff	692	void USART_SetReceiverTimeOut(USART_TypeDef* USARTx, uint32_t USART_ReceiverTimeOut)
bogdanm	0:9b334a45a8ff	693	{
bogdanm	0:9b334a45a8ff	694	/* Check the parameters */
bogdanm	0:9b334a45a8ff	695	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	696	assert_param(IS_USART_TIMEOUT(USART_ReceiverTimeOut));
bogdanm	0:9b334a45a8ff	697
bogdanm	0:9b334a45a8ff	698	/* Clear the receiver Time Out value by clearing the RTO[23:0] bits in the RTOR
bogdanm	0:9b334a45a8ff	699	register */
bogdanm	0:9b334a45a8ff	700	USARTx->RTOR &= (uint32_t)~((uint32_t)USART_RTOR_RTO);
bogdanm	0:9b334a45a8ff	701	/* Set the receiver Time Out value by setting the RTO[23:0] bits in the RTOR
bogdanm	0:9b334a45a8ff	702	register */
bogdanm	0:9b334a45a8ff	703	USARTx->RTOR \|= USART_ReceiverTimeOut;
bogdanm	0:9b334a45a8ff	704	}
bogdanm	0:9b334a45a8ff	705
bogdanm	0:9b334a45a8ff	706	/**
bogdanm	0:9b334a45a8ff	707	* @brief Sets the system clock prescaler.
bogdanm	0:9b334a45a8ff	708	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	709	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	710	* @param USART_Prescaler: specifies the prescaler clock.
bogdanm	0:9b334a45a8ff	711	* @note
bogdanm	0:9b334a45a8ff	712	* This function has to be called before calling USART_Cmd() function.
bogdanm	0:9b334a45a8ff	713	* @retval None
bogdanm	0:9b334a45a8ff	714	*/
bogdanm	0:9b334a45a8ff	715	void USART_SetPrescaler(USART_TypeDef* USARTx, uint8_t USART_Prescaler)
bogdanm	0:9b334a45a8ff	716	{
bogdanm	0:9b334a45a8ff	717	/* Check the parameters */
bogdanm	0:9b334a45a8ff	718	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	719
bogdanm	0:9b334a45a8ff	720	/* Clear the USART prescaler */
bogdanm	0:9b334a45a8ff	721	USARTx->GTPR &= USART_GTPR_GT;
bogdanm	0:9b334a45a8ff	722	/* Set the USART prescaler */
bogdanm	0:9b334a45a8ff	723	USARTx->GTPR \|= USART_Prescaler;
bogdanm	0:9b334a45a8ff	724	}
bogdanm	0:9b334a45a8ff	725
bogdanm	0:9b334a45a8ff	726	/**
bogdanm	0:9b334a45a8ff	727	* @}
bogdanm	0:9b334a45a8ff	728	*/
bogdanm	0:9b334a45a8ff	729
bogdanm	0:9b334a45a8ff	730
bogdanm	0:9b334a45a8ff	731	/** @defgroup USART_Group2 STOP Mode functions
bogdanm	0:9b334a45a8ff	732	* @brief STOP Mode functions
bogdanm	0:9b334a45a8ff	733	*
bogdanm	0:9b334a45a8ff	734	@verbatim
bogdanm	0:9b334a45a8ff	735	===============================================================================
bogdanm	0:9b334a45a8ff	736	##### STOP Mode functions #####
bogdanm	0:9b334a45a8ff	737	===============================================================================
bogdanm	0:9b334a45a8ff	738	[..] This subsection provides a set of functions allowing to manage
bogdanm	0:9b334a45a8ff	739	WakeUp from STOP mode.
bogdanm	0:9b334a45a8ff	740
bogdanm	0:9b334a45a8ff	741	[..] The USART is able to WakeUp from Stop Mode if USART clock is set to HSI
bogdanm	0:9b334a45a8ff	742	or LSI.
bogdanm	0:9b334a45a8ff	743
bogdanm	0:9b334a45a8ff	744	[..] The WakeUp source is configured by calling USART_StopModeWakeUpSourceConfig()
bogdanm	0:9b334a45a8ff	745	function.
bogdanm	0:9b334a45a8ff	746
bogdanm	0:9b334a45a8ff	747	[..] After configuring the source of WakeUp and before entering in Stop Mode
bogdanm	0:9b334a45a8ff	748	USART_STOPModeCmd() function should be called to allow USART WakeUp.
bogdanm	0:9b334a45a8ff	749
bogdanm	0:9b334a45a8ff	750	@endverbatim
bogdanm	0:9b334a45a8ff	751	* @{
bogdanm	0:9b334a45a8ff	752	*/
bogdanm	0:9b334a45a8ff	753
bogdanm	0:9b334a45a8ff	754	/**
bogdanm	0:9b334a45a8ff	755	* @brief Enables or disables the specified USART peripheral in STOP Mode.
bogdanm	0:9b334a45a8ff	756	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	757	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	758	* @param NewState: new state of the USARTx peripheral state in stop mode.
bogdanm	0:9b334a45a8ff	759	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	760	* @note
bogdanm	0:9b334a45a8ff	761	* This function has to be called when USART clock is set to HSI or LSE.
bogdanm	0:9b334a45a8ff	762	* @retval None
bogdanm	0:9b334a45a8ff	763	*/
bogdanm	0:9b334a45a8ff	764	void USART_STOPModeCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	765	{
bogdanm	0:9b334a45a8ff	766	/* Check the parameters */
bogdanm	0:9b334a45a8ff	767	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	768	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	769
bogdanm	0:9b334a45a8ff	770	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	771	{
bogdanm	0:9b334a45a8ff	772	/* Enable the selected USART in STOP mode by setting the UESM bit in the CR1
bogdanm	0:9b334a45a8ff	773	register */
bogdanm	0:9b334a45a8ff	774	USARTx->CR1 \|= USART_CR1_UESM;
bogdanm	0:9b334a45a8ff	775	}
bogdanm	0:9b334a45a8ff	776	else
bogdanm	0:9b334a45a8ff	777	{
bogdanm	0:9b334a45a8ff	778	/* Disable the selected USART in STOP mode by clearing the UE bit in the CR1
bogdanm	0:9b334a45a8ff	779	register */
bogdanm	0:9b334a45a8ff	780	USARTx->CR1 &= (uint32_t)~((uint32_t)USART_CR1_UESM);
bogdanm	0:9b334a45a8ff	781	}
bogdanm	0:9b334a45a8ff	782	}
bogdanm	0:9b334a45a8ff	783
bogdanm	0:9b334a45a8ff	784	/**
bogdanm	0:9b334a45a8ff	785	* @brief Selects the USART WakeUp method form stop mode.
bogdanm	0:9b334a45a8ff	786	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	787	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	788	* @param USART_WakeUp: specifies the selected USART wakeup method.
bogdanm	0:9b334a45a8ff	789	* This parameter can be one of the following values:
bogdanm	0:9b334a45a8ff	790	* @arg USART_WakeUpSource_AddressMatch: WUF active on address match.
bogdanm	0:9b334a45a8ff	791	* @arg USART_WakeUpSource_StartBit: WUF active on Start bit detection.
bogdanm	0:9b334a45a8ff	792	* @arg USART_WakeUpSource_RXNE: WUF active on RXNE.
bogdanm	0:9b334a45a8ff	793	* @note
bogdanm	0:9b334a45a8ff	794	* This function has to be called before calling USART_Cmd() function.
bogdanm	0:9b334a45a8ff	795	* @retval None
bogdanm	0:9b334a45a8ff	796	*/
bogdanm	0:9b334a45a8ff	797	void USART_StopModeWakeUpSourceConfig(USART_TypeDef* USARTx, uint32_t USART_WakeUpSource)
bogdanm	0:9b334a45a8ff	798	{
bogdanm	0:9b334a45a8ff	799	/* Check the parameters */
bogdanm	0:9b334a45a8ff	800	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	801	assert_param(IS_USART_STOPMODE_WAKEUPSOURCE(USART_WakeUpSource));
bogdanm	0:9b334a45a8ff	802
bogdanm	0:9b334a45a8ff	803	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_WUS);
bogdanm	0:9b334a45a8ff	804	USARTx->CR3 \|= USART_WakeUpSource;
bogdanm	0:9b334a45a8ff	805	}
bogdanm	0:9b334a45a8ff	806
bogdanm	0:9b334a45a8ff	807	/**
bogdanm	0:9b334a45a8ff	808	* @}
bogdanm	0:9b334a45a8ff	809	*/
bogdanm	0:9b334a45a8ff	810
bogdanm	0:9b334a45a8ff	811
bogdanm	0:9b334a45a8ff	812	/** @defgroup USART_Group3 AutoBaudRate functions
bogdanm	0:9b334a45a8ff	813	* @brief AutoBaudRate functions
bogdanm	0:9b334a45a8ff	814	*
bogdanm	0:9b334a45a8ff	815	@verbatim
bogdanm	0:9b334a45a8ff	816	===============================================================================
bogdanm	0:9b334a45a8ff	817	##### AutoBaudRate functions #####
bogdanm	0:9b334a45a8ff	818	===============================================================================
bogdanm	0:9b334a45a8ff	819	[..] This subsection provides a set of functions allowing to manage
bogdanm	0:9b334a45a8ff	820	the AutoBaudRate detections.
bogdanm	0:9b334a45a8ff	821
bogdanm	0:9b334a45a8ff	822	[..] Before Enabling AutoBaudRate detection using USART_AutoBaudRateCmd ()
bogdanm	0:9b334a45a8ff	823	The character patterns used to calculate baudrate must be chosen by calling
bogdanm	0:9b334a45a8ff	824	USART_AutoBaudRateConfig() function. These function take as parameter :
bogdanm	0:9b334a45a8ff	825	(#)USART_AutoBaudRate_StartBit : any character starting with a bit 1.
bogdanm	0:9b334a45a8ff	826	(#)USART_AutoBaudRate_FallingEdge : any character starting with a 10xx bit pattern.
bogdanm	0:9b334a45a8ff	827
bogdanm	0:9b334a45a8ff	828	[..] At any later time, another request for AutoBaudRate detection can be performed
bogdanm	0:9b334a45a8ff	829	using USART_RequestCmd() function.
bogdanm	0:9b334a45a8ff	830
bogdanm	0:9b334a45a8ff	831	[..] The AutoBaudRate detection is monitored by the status of ABRF flag which indicate
bogdanm	0:9b334a45a8ff	832	that the AutoBaudRate detection is completed. In addition to ABRF flag, the ABRE flag
bogdanm	0:9b334a45a8ff	833	indicate that this procedure is completed without success. USART_GetFlagStatus ()
bogdanm	0:9b334a45a8ff	834	function should be used to monitor the status of these flags.
bogdanm	0:9b334a45a8ff	835
bogdanm	0:9b334a45a8ff	836	@endverbatim
bogdanm	0:9b334a45a8ff	837	* @{
bogdanm	0:9b334a45a8ff	838	*/
bogdanm	0:9b334a45a8ff	839
bogdanm	0:9b334a45a8ff	840	/**
bogdanm	0:9b334a45a8ff	841	* @brief Enables or disables the Auto Baud Rate.
bogdanm	0:9b334a45a8ff	842	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	843	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	844	* @param NewState: new state of the USARTx auto baud rate.
bogdanm	0:9b334a45a8ff	845	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	846	* @retval None
bogdanm	0:9b334a45a8ff	847	*/
bogdanm	0:9b334a45a8ff	848	void USART_AutoBaudRateCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	849	{
bogdanm	0:9b334a45a8ff	850	/* Check the parameters */
bogdanm	0:9b334a45a8ff	851	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	852	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	853
bogdanm	0:9b334a45a8ff	854	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	855	{
bogdanm	0:9b334a45a8ff	856	/* Enable the auto baud rate feature by setting the ABREN bit in the CR2
bogdanm	0:9b334a45a8ff	857	register */
bogdanm	0:9b334a45a8ff	858	USARTx->CR2 \|= USART_CR2_ABREN;
bogdanm	0:9b334a45a8ff	859	}
bogdanm	0:9b334a45a8ff	860	else
bogdanm	0:9b334a45a8ff	861	{
bogdanm	0:9b334a45a8ff	862	/* Disable the auto baud rate feature by clearing the ABREN bit in the CR2
bogdanm	0:9b334a45a8ff	863	register */
bogdanm	0:9b334a45a8ff	864	USARTx->CR2 &= (uint32_t)~((uint32_t)USART_CR2_ABREN);
bogdanm	0:9b334a45a8ff	865	}
bogdanm	0:9b334a45a8ff	866	}
bogdanm	0:9b334a45a8ff	867
bogdanm	0:9b334a45a8ff	868	/**
bogdanm	0:9b334a45a8ff	869	* @brief Selects the USART auto baud rate method.
bogdanm	0:9b334a45a8ff	870	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	871	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	872	* @param USART_AutoBaudRate: specifies the selected USART auto baud rate method.
bogdanm	0:9b334a45a8ff	873	* This parameter can be one of the following values:
bogdanm	0:9b334a45a8ff	874	* @arg USART_AutoBaudRate_StartBit: Start Bit duration measurement.
bogdanm	0:9b334a45a8ff	875	* @arg USART_AutoBaudRate_FallingEdge: Falling edge to falling edge measurement.
bogdanm	0:9b334a45a8ff	876	* @arg USART_AutoBaudRate_0x7FFrame: 0x7F frame.
bogdanm	0:9b334a45a8ff	877	* @arg USART_AutoBaudRate_0x55Frame: 0x55 frame.
bogdanm	0:9b334a45a8ff	878	* @note
bogdanm	0:9b334a45a8ff	879	* This function has to be called before calling USART_Cmd() function.
bogdanm	0:9b334a45a8ff	880	* @retval None
bogdanm	0:9b334a45a8ff	881	*/
bogdanm	0:9b334a45a8ff	882	void USART_AutoBaudRateConfig(USART_TypeDef* USARTx, uint32_t USART_AutoBaudRate)
bogdanm	0:9b334a45a8ff	883	{
bogdanm	0:9b334a45a8ff	884	/* Check the parameters */
bogdanm	0:9b334a45a8ff	885	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	886	assert_param(IS_USART_AUTOBAUDRATE_MODE(USART_AutoBaudRate));
bogdanm	0:9b334a45a8ff	887
bogdanm	0:9b334a45a8ff	888	USARTx->CR2 &= (uint32_t)~((uint32_t)USART_CR2_ABRMODE);
bogdanm	0:9b334a45a8ff	889	USARTx->CR2 \|= USART_AutoBaudRate;
bogdanm	0:9b334a45a8ff	890	}
bogdanm	0:9b334a45a8ff	891
bogdanm	0:9b334a45a8ff	892	/**
bogdanm	0:9b334a45a8ff	893	* @}
bogdanm	0:9b334a45a8ff	894	*/
bogdanm	0:9b334a45a8ff	895
bogdanm	0:9b334a45a8ff	896
bogdanm	0:9b334a45a8ff	897	/** @defgroup USART_Group4 Data transfers functions
bogdanm	0:9b334a45a8ff	898	* @brief Data transfers functions
bogdanm	0:9b334a45a8ff	899	*
bogdanm	0:9b334a45a8ff	900	@verbatim
bogdanm	0:9b334a45a8ff	901	===============================================================================
bogdanm	0:9b334a45a8ff	902	##### Data transfers functions #####
bogdanm	0:9b334a45a8ff	903	===============================================================================
bogdanm	0:9b334a45a8ff	904	[..] This subsection provides a set of functions allowing to manage
bogdanm	0:9b334a45a8ff	905	the USART data transfers.
bogdanm	0:9b334a45a8ff	906	[..] During an USART reception, data shifts in least significant bit first
bogdanm	0:9b334a45a8ff	907	through the RX pin. When a transmission is taking place, a write instruction to
bogdanm	0:9b334a45a8ff	908	the USART_TDR register stores the data in the shift register.
bogdanm	0:9b334a45a8ff	909	[..] The read access of the USART_RDR register can be done using
bogdanm	0:9b334a45a8ff	910	the USART_ReceiveData() function and returns the RDR value.
bogdanm	0:9b334a45a8ff	911	Whereas a write access to the USART_TDR can be done using USART_SendData()
bogdanm	0:9b334a45a8ff	912	function and stores the written data into TDR.
bogdanm	0:9b334a45a8ff	913
bogdanm	0:9b334a45a8ff	914	@endverbatim
bogdanm	0:9b334a45a8ff	915	* @{
bogdanm	0:9b334a45a8ff	916	*/
bogdanm	0:9b334a45a8ff	917
bogdanm	0:9b334a45a8ff	918	/**
bogdanm	0:9b334a45a8ff	919	* @brief Transmits single data through the USARTx peripheral.
bogdanm	0:9b334a45a8ff	920	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	921	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	922	* @param Data: the data to transmit.
bogdanm	0:9b334a45a8ff	923	* @retval None
bogdanm	0:9b334a45a8ff	924	*/
bogdanm	0:9b334a45a8ff	925	void USART_SendData(USART_TypeDef* USARTx, uint16_t Data)
bogdanm	0:9b334a45a8ff	926	{
bogdanm	0:9b334a45a8ff	927	/* Check the parameters */
bogdanm	0:9b334a45a8ff	928	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	929	assert_param(IS_USART_DATA(Data));
bogdanm	0:9b334a45a8ff	930
bogdanm	0:9b334a45a8ff	931	/* Transmit Data */
bogdanm	0:9b334a45a8ff	932	USARTx->TDR = (Data & (uint16_t)0x01FF);
bogdanm	0:9b334a45a8ff	933	}
bogdanm	0:9b334a45a8ff	934
bogdanm	0:9b334a45a8ff	935	/**
bogdanm	0:9b334a45a8ff	936	* @brief Returns the most recent received data by the USARTx peripheral.
bogdanm	0:9b334a45a8ff	937	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	938	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	939	* @retval The received data.
bogdanm	0:9b334a45a8ff	940	*/
bogdanm	0:9b334a45a8ff	941	uint16_t USART_ReceiveData(USART_TypeDef* USARTx)
bogdanm	0:9b334a45a8ff	942	{
bogdanm	0:9b334a45a8ff	943	/* Check the parameters */
bogdanm	0:9b334a45a8ff	944	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	945
bogdanm	0:9b334a45a8ff	946	/* Receive Data */
bogdanm	0:9b334a45a8ff	947	return (uint16_t)(USARTx->RDR & (uint16_t)0x01FF);
bogdanm	0:9b334a45a8ff	948	}
bogdanm	0:9b334a45a8ff	949
bogdanm	0:9b334a45a8ff	950	/**
bogdanm	0:9b334a45a8ff	951	* @}
bogdanm	0:9b334a45a8ff	952	*/
bogdanm	0:9b334a45a8ff	953
bogdanm	0:9b334a45a8ff	954	/** @defgroup USART_Group5 MultiProcessor Communication functions
bogdanm	0:9b334a45a8ff	955	* @brief Multi-Processor Communication functions
bogdanm	0:9b334a45a8ff	956	*
bogdanm	0:9b334a45a8ff	957	@verbatim
bogdanm	0:9b334a45a8ff	958	===============================================================================
bogdanm	0:9b334a45a8ff	959	##### Multi-Processor Communication functions #####
bogdanm	0:9b334a45a8ff	960	===============================================================================
bogdanm	0:9b334a45a8ff	961	[..] This subsection provides a set of functions allowing to manage the USART
bogdanm	0:9b334a45a8ff	962	multiprocessor communication.
bogdanm	0:9b334a45a8ff	963	[..] For instance one of the USARTs can be the master, its TX output is
bogdanm	0:9b334a45a8ff	964	connected to the RX input of the other USART. The others are slaves,
bogdanm	0:9b334a45a8ff	965	their respective TX outputs are logically ANDed together and connected
bogdanm	0:9b334a45a8ff	966	to the RX input of the master. USART multiprocessor communication is
bogdanm	0:9b334a45a8ff	967	possible through the following procedure:
bogdanm	0:9b334a45a8ff	968	(#) Program the Baud rate, Word length = 9 bits, Stop bits, Parity,
bogdanm	0:9b334a45a8ff	969	Mode transmitter or Mode receiver and hardware flow control values
bogdanm	0:9b334a45a8ff	970	using the USART_Init() function.
bogdanm	0:9b334a45a8ff	971	(#) Configures the USART address using the USART_SetAddress() function.
bogdanm	0:9b334a45a8ff	972	(#) Configures the wake up methode (USART_WakeUp_IdleLine or
bogdanm	0:9b334a45a8ff	973	USART_WakeUp_AddressMark) using USART_WakeUpConfig() function only
bogdanm	0:9b334a45a8ff	974	for the slaves.
bogdanm	0:9b334a45a8ff	975	(#) Enable the USART using the USART_Cmd() function.
bogdanm	0:9b334a45a8ff	976	(#) Enter the USART slaves in mute mode using USART_ReceiverWakeUpCmd()
bogdanm	0:9b334a45a8ff	977	function.
bogdanm	0:9b334a45a8ff	978	[..] The USART Slave exit from mute mode when receive the wake up condition.
bogdanm	0:9b334a45a8ff	979
bogdanm	0:9b334a45a8ff	980	@endverbatim
bogdanm	0:9b334a45a8ff	981	* @{
bogdanm	0:9b334a45a8ff	982	*/
bogdanm	0:9b334a45a8ff	983
bogdanm	0:9b334a45a8ff	984	/**
bogdanm	0:9b334a45a8ff	985	* @brief Sets the address of the USART node.
bogdanm	0:9b334a45a8ff	986	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	987	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	988	* @param USART_Address: Indicates the address of the USART node.
bogdanm	0:9b334a45a8ff	989	* @retval None
bogdanm	0:9b334a45a8ff	990	*/
bogdanm	0:9b334a45a8ff	991	void USART_SetAddress(USART_TypeDef* USARTx, uint8_t USART_Address)
bogdanm	0:9b334a45a8ff	992	{
bogdanm	0:9b334a45a8ff	993	/* Check the parameters */
bogdanm	0:9b334a45a8ff	994	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	995
bogdanm	0:9b334a45a8ff	996	/* Clear the USART address */
bogdanm	0:9b334a45a8ff	997	USARTx->CR2 &= (uint32_t)~((uint32_t)USART_CR2_ADD);
bogdanm	0:9b334a45a8ff	998	/* Set the USART address node */
bogdanm	0:9b334a45a8ff	999	USARTx->CR2 \|=((uint32_t)USART_Address << (uint32_t)0x18);
bogdanm	0:9b334a45a8ff	1000	}
bogdanm	0:9b334a45a8ff	1001
bogdanm	0:9b334a45a8ff	1002	/**
bogdanm	0:9b334a45a8ff	1003	* @brief Enables or disables the USART's mute mode.
bogdanm	0:9b334a45a8ff	1004	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1005	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1006	* @param NewState: new state of the USART mute mode.
bogdanm	0:9b334a45a8ff	1007	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	1008	* @retval None
bogdanm	0:9b334a45a8ff	1009	*/
bogdanm	0:9b334a45a8ff	1010	void USART_MuteModeCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	1011	{
bogdanm	0:9b334a45a8ff	1012	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1013	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1014	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	1015
bogdanm	0:9b334a45a8ff	1016	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	1017	{
bogdanm	0:9b334a45a8ff	1018	/* Enable the USART mute mode by setting the MME bit in the CR1 register */
bogdanm	0:9b334a45a8ff	1019	USARTx->CR1 \|= USART_CR1_MME;
bogdanm	0:9b334a45a8ff	1020	}
bogdanm	0:9b334a45a8ff	1021	else
bogdanm	0:9b334a45a8ff	1022	{
bogdanm	0:9b334a45a8ff	1023	/* Disable the USART mute mode by clearing the MME bit in the CR1 register */
bogdanm	0:9b334a45a8ff	1024	USARTx->CR1 &= (uint32_t)~((uint32_t)USART_CR1_MME);
bogdanm	0:9b334a45a8ff	1025	}
bogdanm	0:9b334a45a8ff	1026	}
bogdanm	0:9b334a45a8ff	1027
bogdanm	0:9b334a45a8ff	1028	/**
bogdanm	0:9b334a45a8ff	1029	* @brief Selects the USART WakeUp method from mute mode.
bogdanm	0:9b334a45a8ff	1030	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1031	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1032	* @param USART_WakeUp: specifies the USART wakeup method.
bogdanm	0:9b334a45a8ff	1033	* This parameter can be one of the following values:
bogdanm	0:9b334a45a8ff	1034	* @arg USART_WakeUp_IdleLine: WakeUp by an idle line detection
bogdanm	0:9b334a45a8ff	1035	* @arg USART_WakeUp_AddressMark: WakeUp by an address mark
bogdanm	0:9b334a45a8ff	1036	* @retval None
bogdanm	0:9b334a45a8ff	1037	*/
bogdanm	0:9b334a45a8ff	1038	void USART_MuteModeWakeUpConfig(USART_TypeDef* USARTx, uint32_t USART_WakeUp)
bogdanm	0:9b334a45a8ff	1039	{
bogdanm	0:9b334a45a8ff	1040	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1041	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1042	assert_param(IS_USART_MUTEMODE_WAKEUP(USART_WakeUp));
bogdanm	0:9b334a45a8ff	1043
bogdanm	0:9b334a45a8ff	1044	USARTx->CR1 &= (uint32_t)~((uint32_t)USART_CR1_WAKE);
bogdanm	0:9b334a45a8ff	1045	USARTx->CR1 \|= USART_WakeUp;
bogdanm	0:9b334a45a8ff	1046	}
bogdanm	0:9b334a45a8ff	1047
bogdanm	0:9b334a45a8ff	1048	/**
bogdanm	0:9b334a45a8ff	1049	* @brief Configure the the USART Address detection length.
bogdanm	0:9b334a45a8ff	1050	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1051	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1052	* @param USART_AddressLength: specifies the USART address length detection.
bogdanm	0:9b334a45a8ff	1053	* This parameter can be one of the following values:
bogdanm	0:9b334a45a8ff	1054	* @arg USART_AddressLength_4b: 4-bit address length detection
bogdanm	0:9b334a45a8ff	1055	* @arg USART_AddressLength_7b: 7-bit address length detection
bogdanm	0:9b334a45a8ff	1056	* @retval None
bogdanm	0:9b334a45a8ff	1057	*/
bogdanm	0:9b334a45a8ff	1058	void USART_AddressDetectionConfig(USART_TypeDef* USARTx, uint32_t USART_AddressLength)
bogdanm	0:9b334a45a8ff	1059	{
bogdanm	0:9b334a45a8ff	1060	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1061	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1062	assert_param(IS_USART_ADDRESS_DETECTION(USART_AddressLength));
bogdanm	0:9b334a45a8ff	1063
bogdanm	0:9b334a45a8ff	1064	USARTx->CR2 &= (uint32_t)~((uint32_t)USART_CR2_ADDM7);
bogdanm	0:9b334a45a8ff	1065	USARTx->CR2 \|= USART_AddressLength;
bogdanm	0:9b334a45a8ff	1066	}
bogdanm	0:9b334a45a8ff	1067
bogdanm	0:9b334a45a8ff	1068	/**
bogdanm	0:9b334a45a8ff	1069	* @}
bogdanm	0:9b334a45a8ff	1070	*/
bogdanm	0:9b334a45a8ff	1071
bogdanm	0:9b334a45a8ff	1072	/** @defgroup USART_Group6 LIN mode functions
bogdanm	0:9b334a45a8ff	1073	* @brief LIN mode functions
bogdanm	0:9b334a45a8ff	1074	*
bogdanm	0:9b334a45a8ff	1075	@verbatim
bogdanm	0:9b334a45a8ff	1076	===============================================================================
bogdanm	0:9b334a45a8ff	1077	##### LIN mode functions #####
bogdanm	0:9b334a45a8ff	1078	===============================================================================
bogdanm	0:9b334a45a8ff	1079	[..] This subsection provides a set of functions allowing to manage the USART
bogdanm	0:9b334a45a8ff	1080	LIN Mode communication.
bogdanm	0:9b334a45a8ff	1081	[..] In LIN mode, 8-bit data format with 1 stop bit is required in accordance
bogdanm	0:9b334a45a8ff	1082	with the LIN standard.
bogdanm	0:9b334a45a8ff	1083	[..] Only this LIN Feature is supported by the USART IP:
bogdanm	0:9b334a45a8ff	1084	(+) LIN Master Synchronous Break send capability and LIN slave break
bogdanm	0:9b334a45a8ff	1085	detection capability : 13-bit break generation and 10/11 bit break
bogdanm	0:9b334a45a8ff	1086	detection.
bogdanm	0:9b334a45a8ff	1087	[..] USART LIN Master transmitter communication is possible through the
bogdanm	0:9b334a45a8ff	1088	following procedure:
bogdanm	0:9b334a45a8ff	1089	(#) Program the Baud rate, Word length = 8bits, Stop bits = 1bit, Parity,
bogdanm	0:9b334a45a8ff	1090	Mode transmitter or Mode receiver and hardware flow control values
bogdanm	0:9b334a45a8ff	1091	using the USART_Init() function.
bogdanm	0:9b334a45a8ff	1092	(#) Enable the LIN mode using the USART_LINCmd() function.
bogdanm	0:9b334a45a8ff	1093	(#) Enable the USART using the USART_Cmd() function.
bogdanm	0:9b334a45a8ff	1094	(#) Send the break character using USART_SendBreak() function.
bogdanm	0:9b334a45a8ff	1095	[..] USART LIN Master receiver communication is possible through the
bogdanm	0:9b334a45a8ff	1096	following procedure:
bogdanm	0:9b334a45a8ff	1097	(#) Program the Baud rate, Word length = 8bits, Stop bits = 1bit, Parity,
bogdanm	0:9b334a45a8ff	1098	Mode transmitter or Mode receiver and hardware flow control values
bogdanm	0:9b334a45a8ff	1099	using the USART_Init() function.
bogdanm	0:9b334a45a8ff	1100	(#) Configures the break detection length
bogdanm	0:9b334a45a8ff	1101	using the USART_LINBreakDetectLengthConfig() function.
bogdanm	0:9b334a45a8ff	1102	(#) Enable the LIN mode using the USART_LINCmd() function.
bogdanm	0:9b334a45a8ff	1103	(#) Enable the USART using the USART_Cmd() function.
bogdanm	0:9b334a45a8ff	1104	[..]
bogdanm	0:9b334a45a8ff	1105	(@) In LIN mode, the following bits must be kept cleared:
bogdanm	0:9b334a45a8ff	1106	(+@) CLKEN in the USART_CR2 register.
bogdanm	0:9b334a45a8ff	1107	(+@) STOP[1:0], SCEN, HDSEL and IREN in the USART_CR3 register.
bogdanm	0:9b334a45a8ff	1108
bogdanm	0:9b334a45a8ff	1109	@endverbatim
bogdanm	0:9b334a45a8ff	1110	* @{
bogdanm	0:9b334a45a8ff	1111	*/
bogdanm	0:9b334a45a8ff	1112
bogdanm	0:9b334a45a8ff	1113	/**
bogdanm	0:9b334a45a8ff	1114	* @brief Sets the USART LIN Break detection length.
bogdanm	0:9b334a45a8ff	1115	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1116	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1117	* @param USART_LINBreakDetectLength: specifies the LIN break detection length.
bogdanm	0:9b334a45a8ff	1118	* This parameter can be one of the following values:
bogdanm	0:9b334a45a8ff	1119	* @arg USART_LINBreakDetectLength_10b: 10-bit break detection
bogdanm	0:9b334a45a8ff	1120	* @arg USART_LINBreakDetectLength_11b: 11-bit break detection
bogdanm	0:9b334a45a8ff	1121	* @retval None
bogdanm	0:9b334a45a8ff	1122	*/
bogdanm	0:9b334a45a8ff	1123	void USART_LINBreakDetectLengthConfig(USART_TypeDef* USARTx, uint32_t USART_LINBreakDetectLength)
bogdanm	0:9b334a45a8ff	1124	{
bogdanm	0:9b334a45a8ff	1125	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1126	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1127	assert_param(IS_USART_LIN_BREAK_DETECT_LENGTH(USART_LINBreakDetectLength));
bogdanm	0:9b334a45a8ff	1128
bogdanm	0:9b334a45a8ff	1129	USARTx->CR2 &= (uint32_t)~((uint32_t)USART_CR2_LBDL);
bogdanm	0:9b334a45a8ff	1130	USARTx->CR2 \|= USART_LINBreakDetectLength;
bogdanm	0:9b334a45a8ff	1131	}
bogdanm	0:9b334a45a8ff	1132
bogdanm	0:9b334a45a8ff	1133	/**
bogdanm	0:9b334a45a8ff	1134	* @brief Enables or disables the USART's LIN mode.
bogdanm	0:9b334a45a8ff	1135	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1136	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1137	* @param NewState: new state of the USART LIN mode.
bogdanm	0:9b334a45a8ff	1138	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	1139	* @retval None
bogdanm	0:9b334a45a8ff	1140	*/
bogdanm	0:9b334a45a8ff	1141	void USART_LINCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	1142	{
bogdanm	0:9b334a45a8ff	1143	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1144	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1145	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	1146
bogdanm	0:9b334a45a8ff	1147	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	1148	{
bogdanm	0:9b334a45a8ff	1149	/* Enable the LIN mode by setting the LINEN bit in the CR2 register */
bogdanm	0:9b334a45a8ff	1150	USARTx->CR2 \|= USART_CR2_LINEN;
bogdanm	0:9b334a45a8ff	1151	}
bogdanm	0:9b334a45a8ff	1152	else
bogdanm	0:9b334a45a8ff	1153	{
bogdanm	0:9b334a45a8ff	1154	/* Disable the LIN mode by clearing the LINEN bit in the CR2 register */
bogdanm	0:9b334a45a8ff	1155	USARTx->CR2 &= (uint32_t)~((uint32_t)USART_CR2_LINEN);
bogdanm	0:9b334a45a8ff	1156	}
bogdanm	0:9b334a45a8ff	1157	}
bogdanm	0:9b334a45a8ff	1158
bogdanm	0:9b334a45a8ff	1159	/**
bogdanm	0:9b334a45a8ff	1160	* @}
bogdanm	0:9b334a45a8ff	1161	*/
bogdanm	0:9b334a45a8ff	1162
bogdanm	0:9b334a45a8ff	1163	/** @defgroup USART_Group7 Halfduplex mode function
bogdanm	0:9b334a45a8ff	1164	* @brief Half-duplex mode function
bogdanm	0:9b334a45a8ff	1165	*
bogdanm	0:9b334a45a8ff	1166	@verbatim
bogdanm	0:9b334a45a8ff	1167	===============================================================================
bogdanm	0:9b334a45a8ff	1168	##### Half-duplex mode function #####
bogdanm	0:9b334a45a8ff	1169	===============================================================================
bogdanm	0:9b334a45a8ff	1170	[..] This subsection provides a set of functions allowing to manage the USART
bogdanm	0:9b334a45a8ff	1171	Half-duplex communication.
bogdanm	0:9b334a45a8ff	1172	[..] The USART can be configured to follow a single-wire half-duplex protocol
bogdanm	0:9b334a45a8ff	1173	where the TX and RX lines are internally connected.
bogdanm	0:9b334a45a8ff	1174	[..] USART Half duplex communication is possible through the following procedure:
bogdanm	0:9b334a45a8ff	1175	(#) Program the Baud rate, Word length, Stop bits, Parity, Mode transmitter
bogdanm	0:9b334a45a8ff	1176	or Mode receiver and hardware flow control values using the USART_Init()
bogdanm	0:9b334a45a8ff	1177	function.
bogdanm	0:9b334a45a8ff	1178	(#) Configures the USART address using the USART_SetAddress() function.
bogdanm	0:9b334a45a8ff	1179	(#) Enable the half duplex mode using USART_HalfDuplexCmd() function.
bogdanm	0:9b334a45a8ff	1180	(#) Enable the USART using the USART_Cmd() function.
bogdanm	0:9b334a45a8ff	1181	[..]
bogdanm	0:9b334a45a8ff	1182	(@) The RX pin is no longer used.
bogdanm	0:9b334a45a8ff	1183	(@) In Half-duplex mode the following bits must be kept cleared:
bogdanm	0:9b334a45a8ff	1184	(+@) LINEN and CLKEN bits in the USART_CR2 register.
bogdanm	0:9b334a45a8ff	1185	(+@) SCEN and IREN bits in the USART_CR3 register.
bogdanm	0:9b334a45a8ff	1186
bogdanm	0:9b334a45a8ff	1187	@endverbatim
bogdanm	0:9b334a45a8ff	1188	* @{
bogdanm	0:9b334a45a8ff	1189	*/
bogdanm	0:9b334a45a8ff	1190
bogdanm	0:9b334a45a8ff	1191	/**
bogdanm	0:9b334a45a8ff	1192	* @brief Enables or disables the USART's Half Duplex communication.
bogdanm	0:9b334a45a8ff	1193	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1194	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1195	* @param NewState: new state of the USART Communication.
bogdanm	0:9b334a45a8ff	1196	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	1197	* @retval None
bogdanm	0:9b334a45a8ff	1198	*/
bogdanm	0:9b334a45a8ff	1199	void USART_HalfDuplexCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	1200	{
bogdanm	0:9b334a45a8ff	1201	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1202	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1203	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	1204
bogdanm	0:9b334a45a8ff	1205	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	1206	{
bogdanm	0:9b334a45a8ff	1207	/* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
bogdanm	0:9b334a45a8ff	1208	USARTx->CR3 \|= USART_CR3_HDSEL;
bogdanm	0:9b334a45a8ff	1209	}
bogdanm	0:9b334a45a8ff	1210	else
bogdanm	0:9b334a45a8ff	1211	{
bogdanm	0:9b334a45a8ff	1212	/* Disable the Half-Duplex mode by clearing the HDSEL bit in the CR3 register */
bogdanm	0:9b334a45a8ff	1213	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_HDSEL);
bogdanm	0:9b334a45a8ff	1214	}
bogdanm	0:9b334a45a8ff	1215	}
bogdanm	0:9b334a45a8ff	1216
bogdanm	0:9b334a45a8ff	1217	/**
bogdanm	0:9b334a45a8ff	1218	* @}
bogdanm	0:9b334a45a8ff	1219	*/
bogdanm	0:9b334a45a8ff	1220
bogdanm	0:9b334a45a8ff	1221
bogdanm	0:9b334a45a8ff	1222	/** @defgroup USART_Group8 Smartcard mode functions
bogdanm	0:9b334a45a8ff	1223	* @brief Smartcard mode functions
bogdanm	0:9b334a45a8ff	1224	*
bogdanm	0:9b334a45a8ff	1225	@verbatim
bogdanm	0:9b334a45a8ff	1226	===============================================================================
bogdanm	0:9b334a45a8ff	1227	##### Smartcard mode functions #####
bogdanm	0:9b334a45a8ff	1228	===============================================================================
bogdanm	0:9b334a45a8ff	1229	[..] This subsection provides a set of functions allowing to manage the USART
bogdanm	0:9b334a45a8ff	1230	Smartcard communication.
bogdanm	0:9b334a45a8ff	1231	[..] The Smartcard interface is designed to support asynchronous protocol
bogdanm	0:9b334a45a8ff	1232	Smartcards as defined in the ISO 7816-3 standard. The USART can provide
bogdanm	0:9b334a45a8ff	1233	a clock to the smartcard through the SCLK output. In smartcard mode,
bogdanm	0:9b334a45a8ff	1234	SCLK is not associated to the communication but is simply derived from
bogdanm	0:9b334a45a8ff	1235	the internal peripheral input clock through a 5-bit prescaler.
bogdanm	0:9b334a45a8ff	1236	[..] Smartcard communication is possible through the following procedure:
bogdanm	0:9b334a45a8ff	1237	(#) Configures the Smartcard Prsecaler using the USART_SetPrescaler()
bogdanm	0:9b334a45a8ff	1238	function.
bogdanm	0:9b334a45a8ff	1239	(#) Configures the Smartcard Guard Time using the USART_SetGuardTime()
bogdanm	0:9b334a45a8ff	1240	function.
bogdanm	0:9b334a45a8ff	1241	(#) Program the USART clock using the USART_ClockInit() function as following:
bogdanm	0:9b334a45a8ff	1242	(++) USART Clock enabled.
bogdanm	0:9b334a45a8ff	1243	(++) USART CPOL Low.
bogdanm	0:9b334a45a8ff	1244	(++) USART CPHA on first edge.
bogdanm	0:9b334a45a8ff	1245	(++) USART Last Bit Clock Enabled.
bogdanm	0:9b334a45a8ff	1246	(#) Program the Smartcard interface using the USART_Init() function as
bogdanm	0:9b334a45a8ff	1247	following:
bogdanm	0:9b334a45a8ff	1248	(++) Word Length = 9 Bits.
bogdanm	0:9b334a45a8ff	1249	(++) 1.5 Stop Bit.
bogdanm	0:9b334a45a8ff	1250	(++) Even parity.
bogdanm	0:9b334a45a8ff	1251	(++) BaudRate = 12096 baud.
bogdanm	0:9b334a45a8ff	1252	(++) Hardware flow control disabled (RTS and CTS signals).
bogdanm	0:9b334a45a8ff	1253	(++) Tx and Rx enabled
bogdanm	0:9b334a45a8ff	1254	(#) Optionally you can enable the parity error interrupt using
bogdanm	0:9b334a45a8ff	1255	the USART_ITConfig() function.
bogdanm	0:9b334a45a8ff	1256	(#) Enable the Smartcard NACK using the USART_SmartCardNACKCmd() function.
bogdanm	0:9b334a45a8ff	1257	(#) Enable the Smartcard interface using the USART_SmartCardCmd() function.
bogdanm	0:9b334a45a8ff	1258	(#) Enable the USART using the USART_Cmd() function.
bogdanm	0:9b334a45a8ff	1259	[..]
bogdanm	0:9b334a45a8ff	1260	Please refer to the ISO 7816-3 specification for more details.
bogdanm	0:9b334a45a8ff	1261	[..]
bogdanm	0:9b334a45a8ff	1262	(@) It is also possible to choose 0.5 stop bit for receiving but it is
bogdanm	0:9b334a45a8ff	1263	recommended to use 1.5 stop bits for both transmitting and receiving
bogdanm	0:9b334a45a8ff	1264	to avoid switching between the two configurations.
bogdanm	0:9b334a45a8ff	1265	(@) In smartcard mode, the following bits must be kept cleared:
bogdanm	0:9b334a45a8ff	1266	(+@) LINEN bit in the USART_CR2 register.
bogdanm	0:9b334a45a8ff	1267	(+@) HDSEL and IREN bits in the USART_CR3 register.
bogdanm	0:9b334a45a8ff	1268
bogdanm	0:9b334a45a8ff	1269	@endverbatim
bogdanm	0:9b334a45a8ff	1270	* @{
bogdanm	0:9b334a45a8ff	1271	*/
bogdanm	0:9b334a45a8ff	1272
bogdanm	0:9b334a45a8ff	1273	/**
bogdanm	0:9b334a45a8ff	1274	* @brief Sets the specified USART guard time.
bogdanm	0:9b334a45a8ff	1275	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1276	* following values: USART1 or USART2 or USART3.
bogdanm	0:9b334a45a8ff	1277	* @param USART_GuardTime: specifies the guard time.
bogdanm	0:9b334a45a8ff	1278	* @retval None
bogdanm	0:9b334a45a8ff	1279	*/
bogdanm	0:9b334a45a8ff	1280	void USART_SetGuardTime(USART_TypeDef* USARTx, uint8_t USART_GuardTime)
bogdanm	0:9b334a45a8ff	1281	{
bogdanm	0:9b334a45a8ff	1282	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1283	assert_param(IS_USART_123_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1284
bogdanm	0:9b334a45a8ff	1285	/* Clear the USART Guard time */
bogdanm	0:9b334a45a8ff	1286	USARTx->GTPR &= USART_GTPR_PSC;
bogdanm	0:9b334a45a8ff	1287	/* Set the USART guard time */
bogdanm	0:9b334a45a8ff	1288	USARTx->GTPR \|= (uint16_t)((uint16_t)USART_GuardTime << 0x08);
bogdanm	0:9b334a45a8ff	1289	}
bogdanm	0:9b334a45a8ff	1290
bogdanm	0:9b334a45a8ff	1291	/**
bogdanm	0:9b334a45a8ff	1292	* @brief Enables or disables the USART's Smart Card mode.
bogdanm	0:9b334a45a8ff	1293	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1294	* following values: USART1 or USART2 or USART3.
bogdanm	0:9b334a45a8ff	1295	* @param NewState: new state of the Smart Card mode.
bogdanm	0:9b334a45a8ff	1296	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	1297	* @retval None
bogdanm	0:9b334a45a8ff	1298	*/
bogdanm	0:9b334a45a8ff	1299	void USART_SmartCardCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	1300	{
bogdanm	0:9b334a45a8ff	1301	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1302	assert_param(IS_USART_123_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1303	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	1304	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	1305	{
bogdanm	0:9b334a45a8ff	1306	/* Enable the SC mode by setting the SCEN bit in the CR3 register */
bogdanm	0:9b334a45a8ff	1307	USARTx->CR3 \|= USART_CR3_SCEN;
bogdanm	0:9b334a45a8ff	1308	}
bogdanm	0:9b334a45a8ff	1309	else
bogdanm	0:9b334a45a8ff	1310	{
bogdanm	0:9b334a45a8ff	1311	/* Disable the SC mode by clearing the SCEN bit in the CR3 register */
bogdanm	0:9b334a45a8ff	1312	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_SCEN);
bogdanm	0:9b334a45a8ff	1313	}
bogdanm	0:9b334a45a8ff	1314	}
bogdanm	0:9b334a45a8ff	1315
bogdanm	0:9b334a45a8ff	1316	/**
bogdanm	0:9b334a45a8ff	1317	* @brief Enables or disables NACK transmission.
bogdanm	0:9b334a45a8ff	1318	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1319	* following values: USART1 or USART2 or USART3.
bogdanm	0:9b334a45a8ff	1320	* @param NewState: new state of the NACK transmission.
bogdanm	0:9b334a45a8ff	1321	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	1322	* @retval None
bogdanm	0:9b334a45a8ff	1323	*/
bogdanm	0:9b334a45a8ff	1324	void USART_SmartCardNACKCmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	1325	{
bogdanm	0:9b334a45a8ff	1326	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1327	assert_param(IS_USART_123_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1328	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	1329	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	1330	{
bogdanm	0:9b334a45a8ff	1331	/* Enable the NACK transmission by setting the NACK bit in the CR3 register */
bogdanm	0:9b334a45a8ff	1332	USARTx->CR3 \|= USART_CR3_NACK;
bogdanm	0:9b334a45a8ff	1333	}
bogdanm	0:9b334a45a8ff	1334	else
bogdanm	0:9b334a45a8ff	1335	{
bogdanm	0:9b334a45a8ff	1336	/* Disable the NACK transmission by clearing the NACK bit in the CR3 register */
bogdanm	0:9b334a45a8ff	1337	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_NACK);
bogdanm	0:9b334a45a8ff	1338	}
bogdanm	0:9b334a45a8ff	1339	}
bogdanm	0:9b334a45a8ff	1340
bogdanm	0:9b334a45a8ff	1341	/**
bogdanm	0:9b334a45a8ff	1342	* @brief Sets the Smart Card number of retries in transmit and receive.
bogdanm	0:9b334a45a8ff	1343	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1344	* following values: USART1 or USART2 or USART3.
bogdanm	0:9b334a45a8ff	1345	* @param USART_AutoCount: specifies the Smart Card auto retry count.
bogdanm	0:9b334a45a8ff	1346	* @retval None
bogdanm	0:9b334a45a8ff	1347	*/
bogdanm	0:9b334a45a8ff	1348	void USART_SetAutoRetryCount(USART_TypeDef* USARTx, uint8_t USART_AutoCount)
bogdanm	0:9b334a45a8ff	1349	{
bogdanm	0:9b334a45a8ff	1350	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1351	assert_param(IS_USART_123_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1352	assert_param(IS_USART_AUTO_RETRY_COUNTER(USART_AutoCount));
bogdanm	0:9b334a45a8ff	1353	/* Clear the USART auto retry count */
bogdanm	0:9b334a45a8ff	1354	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_SCARCNT);
bogdanm	0:9b334a45a8ff	1355	/* Set the USART auto retry count*/
bogdanm	0:9b334a45a8ff	1356	USARTx->CR3 \|= (uint32_t)((uint32_t)USART_AutoCount << 0x11);
bogdanm	0:9b334a45a8ff	1357	}
bogdanm	0:9b334a45a8ff	1358
bogdanm	0:9b334a45a8ff	1359	/**
bogdanm	0:9b334a45a8ff	1360	* @brief Sets the Smart Card Block length.
bogdanm	0:9b334a45a8ff	1361	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1362	* following values: USART1 or USART2 or USART3.
bogdanm	0:9b334a45a8ff	1363	* @param USART_BlockLength: specifies the Smart Card block length.
bogdanm	0:9b334a45a8ff	1364	* @retval None
bogdanm	0:9b334a45a8ff	1365	*/
bogdanm	0:9b334a45a8ff	1366	void USART_SetBlockLength(USART_TypeDef* USARTx, uint8_t USART_BlockLength)
bogdanm	0:9b334a45a8ff	1367	{
bogdanm	0:9b334a45a8ff	1368	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1369	assert_param(IS_USART_123_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1370
bogdanm	0:9b334a45a8ff	1371	/* Clear the Smart card block length */
bogdanm	0:9b334a45a8ff	1372	USARTx->RTOR &= (uint32_t)~((uint32_t)USART_RTOR_BLEN);
bogdanm	0:9b334a45a8ff	1373	/* Set the Smart Card block length */
bogdanm	0:9b334a45a8ff	1374	USARTx->RTOR \|= (uint32_t)((uint32_t)USART_BlockLength << 0x18);
bogdanm	0:9b334a45a8ff	1375	}
bogdanm	0:9b334a45a8ff	1376
bogdanm	0:9b334a45a8ff	1377	/**
bogdanm	0:9b334a45a8ff	1378	* @}
bogdanm	0:9b334a45a8ff	1379	*/
bogdanm	0:9b334a45a8ff	1380
bogdanm	0:9b334a45a8ff	1381	/** @defgroup USART_Group9 IrDA mode functions
bogdanm	0:9b334a45a8ff	1382	* @brief IrDA mode functions
bogdanm	0:9b334a45a8ff	1383	*
bogdanm	0:9b334a45a8ff	1384	@verbatim
bogdanm	0:9b334a45a8ff	1385	===============================================================================
bogdanm	0:9b334a45a8ff	1386	##### IrDA mode functions #####
bogdanm	0:9b334a45a8ff	1387	===============================================================================
bogdanm	0:9b334a45a8ff	1388	[..] This subsection provides a set of functions allowing to manage the USART
bogdanm	0:9b334a45a8ff	1389	IrDA communication.
bogdanm	0:9b334a45a8ff	1390	[..] IrDA is a half duplex communication protocol. If the Transmitter is busy,
bogdanm	0:9b334a45a8ff	1391	any data on the IrDA receive line will be ignored by the IrDA decoder
bogdanm	0:9b334a45a8ff	1392	and if the Receiver is busy, data on the TX from the USART to IrDA will
bogdanm	0:9b334a45a8ff	1393	not be encoded by IrDA. While receiving data, transmission should be
bogdanm	0:9b334a45a8ff	1394	avoided as the data to be transmitted could be corrupted.
bogdanm	0:9b334a45a8ff	1395	[..] IrDA communication is possible through the following procedure:
bogdanm	0:9b334a45a8ff	1396	(#) Program the Baud rate, Word length = 8 bits, Stop bits, Parity,
bogdanm	0:9b334a45a8ff	1397	Transmitter/Receiver modes and hardware flow control values using
bogdanm	0:9b334a45a8ff	1398	the USART_Init() function.
bogdanm	0:9b334a45a8ff	1399	(#) Configures the IrDA pulse width by configuring the prescaler using
bogdanm	0:9b334a45a8ff	1400	the USART_SetPrescaler() function.
bogdanm	0:9b334a45a8ff	1401	(#) Configures the IrDA USART_IrDAMode_LowPower or USART_IrDAMode_Normal
bogdanm	0:9b334a45a8ff	1402	mode using the USART_IrDAConfig() function.
bogdanm	0:9b334a45a8ff	1403	(#) Enable the IrDA using the USART_IrDACmd() function.
bogdanm	0:9b334a45a8ff	1404	(#) Enable the USART using the USART_Cmd() function.
bogdanm	0:9b334a45a8ff	1405	[..]
bogdanm	0:9b334a45a8ff	1406	(@) A pulse of width less than two and greater than one PSC period(s) may or
bogdanm	0:9b334a45a8ff	1407	may not be rejected.
bogdanm	0:9b334a45a8ff	1408	(@) The receiver set up time should be managed by software. The IrDA physical
bogdanm	0:9b334a45a8ff	1409	layer specification specifies a minimum of 10 ms delay between
bogdanm	0:9b334a45a8ff	1410	transmission and reception (IrDA is a half duplex protocol).
bogdanm	0:9b334a45a8ff	1411	(@) In IrDA mode, the following bits must be kept cleared:
bogdanm	0:9b334a45a8ff	1412	(+@) LINEN, STOP and CLKEN bits in the USART_CR2 register.
bogdanm	0:9b334a45a8ff	1413	(+@) SCEN and HDSEL bits in the USART_CR3 register.
bogdanm	0:9b334a45a8ff	1414
bogdanm	0:9b334a45a8ff	1415	@endverbatim
bogdanm	0:9b334a45a8ff	1416	* @{
bogdanm	0:9b334a45a8ff	1417	*/
bogdanm	0:9b334a45a8ff	1418
bogdanm	0:9b334a45a8ff	1419	/**
bogdanm	0:9b334a45a8ff	1420	* @brief Configures the USART's IrDA interface.
bogdanm	0:9b334a45a8ff	1421	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1422	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1423	* @param USART_IrDAMode: specifies the IrDA mode.
bogdanm	0:9b334a45a8ff	1424	* This parameter can be one of the following values:
bogdanm	0:9b334a45a8ff	1425	* @arg USART_IrDAMode_LowPower
bogdanm	0:9b334a45a8ff	1426	* @arg USART_IrDAMode_Normal
bogdanm	0:9b334a45a8ff	1427	* @retval None
bogdanm	0:9b334a45a8ff	1428	*/
bogdanm	0:9b334a45a8ff	1429	void USART_IrDAConfig(USART_TypeDef* USARTx, uint32_t USART_IrDAMode)
bogdanm	0:9b334a45a8ff	1430	{
bogdanm	0:9b334a45a8ff	1431	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1432	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1433	assert_param(IS_USART_IRDA_MODE(USART_IrDAMode));
bogdanm	0:9b334a45a8ff	1434
bogdanm	0:9b334a45a8ff	1435	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_IRLP);
bogdanm	0:9b334a45a8ff	1436	USARTx->CR3 \|= USART_IrDAMode;
bogdanm	0:9b334a45a8ff	1437	}
bogdanm	0:9b334a45a8ff	1438
bogdanm	0:9b334a45a8ff	1439	/**
bogdanm	0:9b334a45a8ff	1440	* @brief Enables or disables the USART's IrDA interface.
bogdanm	0:9b334a45a8ff	1441	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1442	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1443	* @param NewState: new state of the IrDA mode.
bogdanm	0:9b334a45a8ff	1444	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	1445	* @retval None
bogdanm	0:9b334a45a8ff	1446	*/
bogdanm	0:9b334a45a8ff	1447	void USART_IrDACmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	1448	{
bogdanm	0:9b334a45a8ff	1449	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1450	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1451	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	1452
bogdanm	0:9b334a45a8ff	1453	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	1454	{
bogdanm	0:9b334a45a8ff	1455	/* Enable the IrDA mode by setting the IREN bit in the CR3 register */
bogdanm	0:9b334a45a8ff	1456	USARTx->CR3 \|= USART_CR3_IREN;
bogdanm	0:9b334a45a8ff	1457	}
bogdanm	0:9b334a45a8ff	1458	else
bogdanm	0:9b334a45a8ff	1459	{
bogdanm	0:9b334a45a8ff	1460	/* Disable the IrDA mode by clearing the IREN bit in the CR3 register */
bogdanm	0:9b334a45a8ff	1461	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_IREN);
bogdanm	0:9b334a45a8ff	1462	}
bogdanm	0:9b334a45a8ff	1463	}
bogdanm	0:9b334a45a8ff	1464	/**
bogdanm	0:9b334a45a8ff	1465	* @}
bogdanm	0:9b334a45a8ff	1466	*/
bogdanm	0:9b334a45a8ff	1467
bogdanm	0:9b334a45a8ff	1468	/** @defgroup USART_Group10 RS485 mode function
bogdanm	0:9b334a45a8ff	1469	* @brief RS485 mode function
bogdanm	0:9b334a45a8ff	1470	*
bogdanm	0:9b334a45a8ff	1471	@verbatim
bogdanm	0:9b334a45a8ff	1472	===============================================================================
bogdanm	0:9b334a45a8ff	1473	##### RS485 mode functions #####
bogdanm	0:9b334a45a8ff	1474	===============================================================================
bogdanm	0:9b334a45a8ff	1475	[..] This subsection provides a set of functions allowing to manage the USART
bogdanm	0:9b334a45a8ff	1476	RS485 flow control.
bogdanm	0:9b334a45a8ff	1477	[..] RS485 flow control (Driver enable feature) handling is possible through
bogdanm	0:9b334a45a8ff	1478	the following procedure:
bogdanm	0:9b334a45a8ff	1479	(#) Program the Baud rate, Word length = 8 bits, Stop bits, Parity,
bogdanm	0:9b334a45a8ff	1480	Transmitter/Receiver modes and hardware flow control values using
bogdanm	0:9b334a45a8ff	1481	the USART_Init() function.
bogdanm	0:9b334a45a8ff	1482	(#) Enable the Driver Enable using the USART_DECmd() function.
bogdanm	0:9b334a45a8ff	1483	(#) Configures the Driver Enable polarity using the USART_DEPolarityConfig()
bogdanm	0:9b334a45a8ff	1484	function.
bogdanm	0:9b334a45a8ff	1485	(#) Configures the Driver Enable assertion time using USART_SetDEAssertionTime()
bogdanm	0:9b334a45a8ff	1486	function and deassertion time using the USART_SetDEDeassertionTime()
bogdanm	0:9b334a45a8ff	1487	function.
bogdanm	0:9b334a45a8ff	1488	(#) Enable the USART using the USART_Cmd() function.
bogdanm	0:9b334a45a8ff	1489	[..]
bogdanm	0:9b334a45a8ff	1490	(@) The assertion and dessertion times are expressed in sample time units (1/8 or
bogdanm	0:9b334a45a8ff	1491	1/16 bit time, depending on the oversampling rate).
bogdanm	0:9b334a45a8ff	1492
bogdanm	0:9b334a45a8ff	1493	@endverbatim
bogdanm	0:9b334a45a8ff	1494	* @{
bogdanm	0:9b334a45a8ff	1495	*/
bogdanm	0:9b334a45a8ff	1496
bogdanm	0:9b334a45a8ff	1497	/**
bogdanm	0:9b334a45a8ff	1498	* @brief Enables or disables the USART's DE functionality.
bogdanm	0:9b334a45a8ff	1499	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1500	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1501	* @param NewState: new state of the driver enable mode.
bogdanm	0:9b334a45a8ff	1502	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	1503	* @retval None
bogdanm	0:9b334a45a8ff	1504	*/
bogdanm	0:9b334a45a8ff	1505	void USART_DECmd(USART_TypeDef* USARTx, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	1506	{
bogdanm	0:9b334a45a8ff	1507	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1508	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1509	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	1510	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	1511	{
bogdanm	0:9b334a45a8ff	1512	/* Enable the DE functionality by setting the DEM bit in the CR3 register */
bogdanm	0:9b334a45a8ff	1513	USARTx->CR3 \|= USART_CR3_DEM;
bogdanm	0:9b334a45a8ff	1514	}
bogdanm	0:9b334a45a8ff	1515	else
bogdanm	0:9b334a45a8ff	1516	{
bogdanm	0:9b334a45a8ff	1517	/* Disable the DE functionality by clearing the DEM bit in the CR3 register */
bogdanm	0:9b334a45a8ff	1518	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DEM);
bogdanm	0:9b334a45a8ff	1519	}
bogdanm	0:9b334a45a8ff	1520	}
bogdanm	0:9b334a45a8ff	1521
bogdanm	0:9b334a45a8ff	1522	/**
bogdanm	0:9b334a45a8ff	1523	* @brief Configures the USART's DE polarity
bogdanm	0:9b334a45a8ff	1524	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1525	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1526	* @param USART_DEPolarity: specifies the DE polarity.
bogdanm	0:9b334a45a8ff	1527	* This parameter can be one of the following values:
bogdanm	0:9b334a45a8ff	1528	* @arg USART_DEPolarity_Low
bogdanm	0:9b334a45a8ff	1529	* @arg USART_DEPolarity_High
bogdanm	0:9b334a45a8ff	1530	* @retval None
bogdanm	0:9b334a45a8ff	1531	*/
bogdanm	0:9b334a45a8ff	1532	void USART_DEPolarityConfig(USART_TypeDef* USARTx, uint32_t USART_DEPolarity)
bogdanm	0:9b334a45a8ff	1533	{
bogdanm	0:9b334a45a8ff	1534	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1535	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1536	assert_param(IS_USART_DE_POLARITY(USART_DEPolarity));
bogdanm	0:9b334a45a8ff	1537
bogdanm	0:9b334a45a8ff	1538	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DEP);
bogdanm	0:9b334a45a8ff	1539	USARTx->CR3 \|= USART_DEPolarity;
bogdanm	0:9b334a45a8ff	1540	}
bogdanm	0:9b334a45a8ff	1541
bogdanm	0:9b334a45a8ff	1542	/**
bogdanm	0:9b334a45a8ff	1543	* @brief Sets the specified RS485 DE assertion time
bogdanm	0:9b334a45a8ff	1544	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1545	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1546	* @param USART_AssertionTime: specifies the time between the activation of the DE
bogdanm	0:9b334a45a8ff	1547	* signal and the beginning of the start bit
bogdanm	0:9b334a45a8ff	1548	* @retval None
bogdanm	0:9b334a45a8ff	1549	*/
bogdanm	0:9b334a45a8ff	1550	void USART_SetDEAssertionTime(USART_TypeDef* USARTx, uint32_t USART_DEAssertionTime)
bogdanm	0:9b334a45a8ff	1551	{
bogdanm	0:9b334a45a8ff	1552	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1553	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1554	assert_param(IS_USART_DE_ASSERTION_DEASSERTION_TIME(USART_DEAssertionTime));
bogdanm	0:9b334a45a8ff	1555
bogdanm	0:9b334a45a8ff	1556	/* Clear the DE assertion time */
bogdanm	0:9b334a45a8ff	1557	USARTx->CR1 &= (uint32_t)~((uint32_t)USART_CR1_DEAT);
bogdanm	0:9b334a45a8ff	1558	/* Set the new value for the DE assertion time */
bogdanm	0:9b334a45a8ff	1559	USARTx->CR1 \|=((uint32_t)USART_DEAssertionTime << (uint32_t)0x15);
bogdanm	0:9b334a45a8ff	1560	}
bogdanm	0:9b334a45a8ff	1561
bogdanm	0:9b334a45a8ff	1562	/**
bogdanm	0:9b334a45a8ff	1563	* @brief Sets the specified RS485 DE deassertion time
bogdanm	0:9b334a45a8ff	1564	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1565	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1566	* @param USART_DeassertionTime: specifies the time between the middle of the last
bogdanm	0:9b334a45a8ff	1567	* stop bit in a transmitted message and the de-activation of the DE signal
bogdanm	0:9b334a45a8ff	1568	* @retval None
bogdanm	0:9b334a45a8ff	1569	*/
bogdanm	0:9b334a45a8ff	1570	void USART_SetDEDeassertionTime(USART_TypeDef* USARTx, uint32_t USART_DEDeassertionTime)
bogdanm	0:9b334a45a8ff	1571	{
bogdanm	0:9b334a45a8ff	1572	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1573	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1574	assert_param(IS_USART_DE_ASSERTION_DEASSERTION_TIME(USART_DEDeassertionTime));
bogdanm	0:9b334a45a8ff	1575
bogdanm	0:9b334a45a8ff	1576	/* Clear the DE deassertion time */
bogdanm	0:9b334a45a8ff	1577	USARTx->CR1 &= (uint32_t)~((uint32_t)USART_CR1_DEDT);
bogdanm	0:9b334a45a8ff	1578	/* Set the new value for the DE deassertion time */
bogdanm	0:9b334a45a8ff	1579	USARTx->CR1 \|=((uint32_t)USART_DEDeassertionTime << (uint32_t)0x10);
bogdanm	0:9b334a45a8ff	1580	}
bogdanm	0:9b334a45a8ff	1581
bogdanm	0:9b334a45a8ff	1582	/**
bogdanm	0:9b334a45a8ff	1583	* @}
bogdanm	0:9b334a45a8ff	1584	*/
bogdanm	0:9b334a45a8ff	1585
bogdanm	0:9b334a45a8ff	1586	/** @defgroup USART_Group11 DMA transfers management functions
bogdanm	0:9b334a45a8ff	1587	* @brief DMA transfers management functions
bogdanm	0:9b334a45a8ff	1588	*
bogdanm	0:9b334a45a8ff	1589	@verbatim
bogdanm	0:9b334a45a8ff	1590	===============================================================================
bogdanm	0:9b334a45a8ff	1591	##### DMA transfers management functions #####
bogdanm	0:9b334a45a8ff	1592	===============================================================================
bogdanm	0:9b334a45a8ff	1593	[..] This section provides two functions that can be used only in DMA mode.
bogdanm	0:9b334a45a8ff	1594	[..] In DMA Mode, the USART communication can be managed by 2 DMA Channel
bogdanm	0:9b334a45a8ff	1595	requests:
bogdanm	0:9b334a45a8ff	1596	(#) USART_DMAReq_Tx: specifies the Tx buffer DMA transfer request.
bogdanm	0:9b334a45a8ff	1597	(#) USART_DMAReq_Rx: specifies the Rx buffer DMA transfer request.
bogdanm	0:9b334a45a8ff	1598	[..] In this Mode it is advised to use the following function:
bogdanm	0:9b334a45a8ff	1599	(+) void USART_DMACmd(USART_TypeDef* USARTx, uint16_t USART_DMAReq,
bogdanm	0:9b334a45a8ff	1600	FunctionalState NewState).
bogdanm	0:9b334a45a8ff	1601	@endverbatim
bogdanm	0:9b334a45a8ff	1602	* @{
bogdanm	0:9b334a45a8ff	1603	*/
bogdanm	0:9b334a45a8ff	1604
bogdanm	0:9b334a45a8ff	1605	/**
bogdanm	0:9b334a45a8ff	1606	* @brief Enables or disables the USART's DMA interface.
bogdanm	0:9b334a45a8ff	1607	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1608	* following values: USART1 or USART2 or USART3 or UART4.
bogdanm	0:9b334a45a8ff	1609	* @param USART_DMAReq: specifies the DMA request.
bogdanm	0:9b334a45a8ff	1610	* This parameter can be any combination of the following values:
bogdanm	0:9b334a45a8ff	1611	* @arg USART_DMAReq_Tx: USART DMA transmit request
bogdanm	0:9b334a45a8ff	1612	* @arg USART_DMAReq_Rx: USART DMA receive request
bogdanm	0:9b334a45a8ff	1613	* @param NewState: new state of the DMA Request sources.
bogdanm	0:9b334a45a8ff	1614	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	1615	* @retval None
bogdanm	0:9b334a45a8ff	1616	*/
bogdanm	0:9b334a45a8ff	1617	void USART_DMACmd(USART_TypeDef* USARTx, uint32_t USART_DMAReq, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	1618	{
bogdanm	0:9b334a45a8ff	1619	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1620	assert_param(IS_USART_1234_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1621	assert_param(IS_USART_DMAREQ(USART_DMAReq));
bogdanm	0:9b334a45a8ff	1622	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	1623
bogdanm	0:9b334a45a8ff	1624	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	1625	{
bogdanm	0:9b334a45a8ff	1626	/* Enable the DMA transfer for selected requests by setting the DMAT and/or
bogdanm	0:9b334a45a8ff	1627	DMAR bits in the USART CR3 register */
bogdanm	0:9b334a45a8ff	1628	USARTx->CR3 \|= USART_DMAReq;
bogdanm	0:9b334a45a8ff	1629	}
bogdanm	0:9b334a45a8ff	1630	else
bogdanm	0:9b334a45a8ff	1631	{
bogdanm	0:9b334a45a8ff	1632	/* Disable the DMA transfer for selected requests by clearing the DMAT and/or
bogdanm	0:9b334a45a8ff	1633	DMAR bits in the USART CR3 register */
bogdanm	0:9b334a45a8ff	1634	USARTx->CR3 &= (uint32_t)~USART_DMAReq;
bogdanm	0:9b334a45a8ff	1635	}
bogdanm	0:9b334a45a8ff	1636	}
bogdanm	0:9b334a45a8ff	1637
bogdanm	0:9b334a45a8ff	1638	/**
bogdanm	0:9b334a45a8ff	1639	* @brief Enables or disables the USART's DMA interface when reception error occurs.
bogdanm	0:9b334a45a8ff	1640	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1641	* following values: USART1 or USART2 or USART3 or UART4.
bogdanm	0:9b334a45a8ff	1642	* @param USART_DMAOnError: specifies the DMA status in case of reception error.
bogdanm	0:9b334a45a8ff	1643	* This parameter can be any combination of the following values:
bogdanm	0:9b334a45a8ff	1644	* @arg USART_DMAOnError_Enable: DMA receive request enabled when the USART DMA
bogdanm	0:9b334a45a8ff	1645	* reception error is asserted.
bogdanm	0:9b334a45a8ff	1646	* @arg USART_DMAOnError_Disable: DMA receive request disabled when the USART DMA
bogdanm	0:9b334a45a8ff	1647	* reception error is asserted.
bogdanm	0:9b334a45a8ff	1648	* @retval None
bogdanm	0:9b334a45a8ff	1649	*/
bogdanm	0:9b334a45a8ff	1650	void USART_DMAReceptionErrorConfig(USART_TypeDef* USARTx, uint32_t USART_DMAOnError)
bogdanm	0:9b334a45a8ff	1651	{
bogdanm	0:9b334a45a8ff	1652	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1653	assert_param(IS_USART_1234_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1654	assert_param(IS_USART_DMAONERROR(USART_DMAOnError));
bogdanm	0:9b334a45a8ff	1655
bogdanm	0:9b334a45a8ff	1656	/* Clear the DMA Reception error detection bit */
bogdanm	0:9b334a45a8ff	1657	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DDRE);
bogdanm	0:9b334a45a8ff	1658	/* Set the new value for the DMA Reception error detection bit */
bogdanm	0:9b334a45a8ff	1659	USARTx->CR3 \|= USART_DMAOnError;
bogdanm	0:9b334a45a8ff	1660	}
bogdanm	0:9b334a45a8ff	1661
bogdanm	0:9b334a45a8ff	1662	/**
bogdanm	0:9b334a45a8ff	1663	* @}
bogdanm	0:9b334a45a8ff	1664	*/
bogdanm	0:9b334a45a8ff	1665
bogdanm	0:9b334a45a8ff	1666	/** @defgroup USART_Group12 Interrupts and flags management functions
bogdanm	0:9b334a45a8ff	1667	* @brief Interrupts and flags management functions
bogdanm	0:9b334a45a8ff	1668	*
bogdanm	0:9b334a45a8ff	1669	@verbatim
bogdanm	0:9b334a45a8ff	1670	===============================================================================
bogdanm	0:9b334a45a8ff	1671	##### Interrupts and flags management functions #####
bogdanm	0:9b334a45a8ff	1672	===============================================================================
bogdanm	0:9b334a45a8ff	1673	[..] This subsection provides a set of functions allowing to configure the
bogdanm	0:9b334a45a8ff	1674	USART Interrupts sources, Requests and check or clear the flags or pending bits status.
bogdanm	0:9b334a45a8ff	1675	The user should identify which mode will be used in his application to
bogdanm	0:9b334a45a8ff	1676	manage the communication: Polling mode, Interrupt mode.
bogdanm	0:9b334a45a8ff	1677
bogdanm	0:9b334a45a8ff	1678	* Polling Mode *
bogdanm	0:9b334a45a8ff	1679	====================
bogdanm	0:9b334a45a8ff	1680	[..] In Polling Mode, the SPI communication can be managed by these flags:
bogdanm	0:9b334a45a8ff	1681	(#) USART_FLAG_REACK: to indicate the status of the Receive Enable
bogdanm	0:9b334a45a8ff	1682	acknowledge flag
bogdanm	0:9b334a45a8ff	1683	(#) USART_FLAG_TEACK: to indicate the status of the Transmit Enable
bogdanm	0:9b334a45a8ff	1684	acknowledge flag.
bogdanm	0:9b334a45a8ff	1685	(#) USART_FLAG_WUF: to indicate the status of the Wake up flag.
bogdanm	0:9b334a45a8ff	1686	(#) USART_FLAG_RWU: to indicate the status of the Receive Wake up flag.
bogdanm	0:9b334a45a8ff	1687	(#) USART_FLAG_SBK: to indicate the status of the Send Break flag.
bogdanm	0:9b334a45a8ff	1688	(#) USART_FLAG_CMF: to indicate the status of the Character match flag.
bogdanm	0:9b334a45a8ff	1689	(#) USART_FLAG_BUSY: to indicate the status of the Busy flag.
bogdanm	0:9b334a45a8ff	1690	(#) USART_FLAG_ABRF: to indicate the status of the Auto baud rate flag.
bogdanm	0:9b334a45a8ff	1691	(#) USART_FLAG_ABRE: to indicate the status of the Auto baud rate error flag.
bogdanm	0:9b334a45a8ff	1692	(#) USART_FLAG_EOBF: to indicate the status of the End of block flag.
bogdanm	0:9b334a45a8ff	1693	(#) USART_FLAG_RTOF: to indicate the status of the Receive time out flag.
bogdanm	0:9b334a45a8ff	1694	(#) USART_FLAG_nCTSS: to indicate the status of the Inverted nCTS input
bogdanm	0:9b334a45a8ff	1695	bit status.
bogdanm	0:9b334a45a8ff	1696	(#) USART_FLAG_TXE: to indicate the status of the transmit buffer register.
bogdanm	0:9b334a45a8ff	1697	(#) USART_FLAG_RXNE: to indicate the status of the receive buffer register.
bogdanm	0:9b334a45a8ff	1698	(#) USART_FLAG_TC: to indicate the status of the transmit operation.
bogdanm	0:9b334a45a8ff	1699	(#) USART_FLAG_IDLE: to indicate the status of the Idle Line.
bogdanm	0:9b334a45a8ff	1700	(#) USART_FLAG_CTS: to indicate the status of the nCTS input.
bogdanm	0:9b334a45a8ff	1701	(#) USART_FLAG_LBD: to indicate the status of the LIN break detection.
bogdanm	0:9b334a45a8ff	1702	(#) USART_FLAG_NE: to indicate if a noise error occur.
bogdanm	0:9b334a45a8ff	1703	(#) USART_FLAG_FE: to indicate if a frame error occur.
bogdanm	0:9b334a45a8ff	1704	(#) USART_FLAG_PE: to indicate if a parity error occur.
bogdanm	0:9b334a45a8ff	1705	(#) USART_FLAG_ORE: to indicate if an Overrun error occur.
bogdanm	0:9b334a45a8ff	1706	[..] In this Mode it is advised to use the following functions:
bogdanm	0:9b334a45a8ff	1707	(+) FlagStatus USART_GetFlagStatus(USART_TypeDef* USARTx, uint16_t USART_FLAG).
bogdanm	0:9b334a45a8ff	1708	(+) void USART_ClearFlag(USART_TypeDef* USARTx, uint16_t USART_FLAG).
bogdanm	0:9b334a45a8ff	1709
bogdanm	0:9b334a45a8ff	1710	* Interrupt Mode *
bogdanm	0:9b334a45a8ff	1711	======================
bogdanm	0:9b334a45a8ff	1712	[..] In Interrupt Mode, the USART communication can be managed by 8 interrupt
bogdanm	0:9b334a45a8ff	1713	sources and 10 pending bits:
bogdanm	0:9b334a45a8ff	1714	(+) Pending Bits:
bogdanm	0:9b334a45a8ff	1715	(##) USART_IT_WU: to indicate the status of the Wake up interrupt.
bogdanm	0:9b334a45a8ff	1716	(##) USART_IT_CM: to indicate the status of Character match interrupt.
bogdanm	0:9b334a45a8ff	1717	(##) USART_IT_EOB: to indicate the status of End of block interrupt.
bogdanm	0:9b334a45a8ff	1718	(##) USART_IT_RTO: to indicate the status of Receive time out interrupt.
bogdanm	0:9b334a45a8ff	1719	(##) USART_IT_CTS: to indicate the status of CTS change interrupt.
bogdanm	0:9b334a45a8ff	1720	(##) USART_IT_LBD: to indicate the status of LIN Break detection interrupt.
bogdanm	0:9b334a45a8ff	1721	(##) USART_IT_TC: to indicate the status of Transmission complete interrupt.
bogdanm	0:9b334a45a8ff	1722	(##) USART_IT_IDLE: to indicate the status of IDLE line detected interrupt.
bogdanm	0:9b334a45a8ff	1723	(##) USART_IT_ORE: to indicate the status of OverRun Error interrupt.
bogdanm	0:9b334a45a8ff	1724	(##) USART_IT_NE: to indicate the status of Noise Error interrupt.
bogdanm	0:9b334a45a8ff	1725	(##) USART_IT_FE: to indicate the status of Framing Error interrupt.
bogdanm	0:9b334a45a8ff	1726	(##) USART_IT_PE: to indicate the status of Parity Error interrupt.
bogdanm	0:9b334a45a8ff	1727
bogdanm	0:9b334a45a8ff	1728	(+) Interrupt Source:
bogdanm	0:9b334a45a8ff	1729	(##) USART_IT_WU: specifies the interrupt source for Wake up interrupt.
bogdanm	0:9b334a45a8ff	1730	(##) USART_IT_CM: specifies the interrupt source for Character match
bogdanm	0:9b334a45a8ff	1731	interrupt.
bogdanm	0:9b334a45a8ff	1732	(##) USART_IT_EOB: specifies the interrupt source for End of block
bogdanm	0:9b334a45a8ff	1733	interrupt.
bogdanm	0:9b334a45a8ff	1734	(##) USART_IT_RTO: specifies the interrupt source for Receive time-out
bogdanm	0:9b334a45a8ff	1735	interrupt.
bogdanm	0:9b334a45a8ff	1736	(##) USART_IT_CTS: specifies the interrupt source for CTS change interrupt.
bogdanm	0:9b334a45a8ff	1737	(##) USART_IT_LBD: specifies the interrupt source for LIN Break
bogdanm	0:9b334a45a8ff	1738	detection interrupt.
bogdanm	0:9b334a45a8ff	1739	(##) USART_IT_TXE: specifies the interrupt source for Tansmit Data
bogdanm	0:9b334a45a8ff	1740	Register empty interrupt.
bogdanm	0:9b334a45a8ff	1741	(##) USART_IT_TC: specifies the interrupt source for Transmission
bogdanm	0:9b334a45a8ff	1742	complete interrupt.
bogdanm	0:9b334a45a8ff	1743	(##) USART_IT_RXNE: specifies the interrupt source for Receive Data
bogdanm	0:9b334a45a8ff	1744	register not empty interrupt.
bogdanm	0:9b334a45a8ff	1745	(##) USART_IT_IDLE: specifies the interrupt source for Idle line
bogdanm	0:9b334a45a8ff	1746	detection interrupt.
bogdanm	0:9b334a45a8ff	1747	(##) USART_IT_PE: specifies the interrupt source for Parity Error interrupt.
bogdanm	0:9b334a45a8ff	1748	(##) USART_IT_ERR: specifies the interrupt source for Error interrupt
bogdanm	0:9b334a45a8ff	1749	(Frame error, noise error, overrun error)
bogdanm	0:9b334a45a8ff	1750	-@@- Some parameters are coded in order to use them as interrupt
bogdanm	0:9b334a45a8ff	1751	source or as pending bits.
bogdanm	0:9b334a45a8ff	1752	[..] In this Mode it is advised to use the following functions:
bogdanm	0:9b334a45a8ff	1753	(+) void USART_ITConfig(USART_TypeDef* USARTx, uint16_t USART_IT, FunctionalState NewState).
bogdanm	0:9b334a45a8ff	1754	(+) ITStatus USART_GetITStatus(USART_TypeDef* USARTx, uint16_t USART_IT).
bogdanm	0:9b334a45a8ff	1755	(+) void USART_ClearITPendingBit(USART_TypeDef* USARTx, uint16_t USART_IT).
bogdanm	0:9b334a45a8ff	1756
bogdanm	0:9b334a45a8ff	1757	@endverbatim
bogdanm	0:9b334a45a8ff	1758	* @{
bogdanm	0:9b334a45a8ff	1759	*/
bogdanm	0:9b334a45a8ff	1760
bogdanm	0:9b334a45a8ff	1761	/**
bogdanm	0:9b334a45a8ff	1762	* @brief Enables or disables the specified USART interrupts.
bogdanm	0:9b334a45a8ff	1763	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1764	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1765	* @param USART_IT: specifies the USART interrupt sources to be enabled or disabled.
bogdanm	0:9b334a45a8ff	1766	* This parameter can be one of the following values:
bogdanm	0:9b334a45a8ff	1767	* @arg USART_IT_WU: Wake up interrupt.
bogdanm	0:9b334a45a8ff	1768	* @arg USART_IT_CM: Character match interrupt.
bogdanm	0:9b334a45a8ff	1769	* @arg USART_IT_EOB: End of block interrupt.
bogdanm	0:9b334a45a8ff	1770	* @arg USART_IT_RTO: Receive time out interrupt.
bogdanm	0:9b334a45a8ff	1771	* @arg USART_IT_CTS: CTS change interrupt.
bogdanm	0:9b334a45a8ff	1772	* @arg USART_IT_LBD: LIN Break detection interrupt.
bogdanm	0:9b334a45a8ff	1773	* @arg USART_IT_TXE: Tansmit Data Register empty interrupt.
bogdanm	0:9b334a45a8ff	1774	* @arg USART_IT_TC: Transmission complete interrupt.
bogdanm	0:9b334a45a8ff	1775	* @arg USART_IT_RXNE: Receive Data register not empty interrupt.
bogdanm	0:9b334a45a8ff	1776	* @arg USART_IT_IDLE: Idle line detection interrupt.
bogdanm	0:9b334a45a8ff	1777	* @arg USART_IT_PE: Parity Error interrupt.
bogdanm	0:9b334a45a8ff	1778	* @arg USART_IT_ERR: Error interrupt(Frame error, noise error, overrun error)
bogdanm	0:9b334a45a8ff	1779	* @param NewState: new state of the specified USARTx interrupts.
bogdanm	0:9b334a45a8ff	1780	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	1781	* @retval None
bogdanm	0:9b334a45a8ff	1782	*/
bogdanm	0:9b334a45a8ff	1783	void USART_ITConfig(USART_TypeDef* USARTx, uint32_t USART_IT, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	1784	{
bogdanm	0:9b334a45a8ff	1785	uint32_t usartreg = 0, itpos = 0, itmask = 0;
bogdanm	0:9b334a45a8ff	1786	uint32_t usartxbase = 0;
bogdanm	0:9b334a45a8ff	1787	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1788	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1789	assert_param(IS_USART_CONFIG_IT(USART_IT));
bogdanm	0:9b334a45a8ff	1790	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	1791
bogdanm	0:9b334a45a8ff	1792	usartxbase = (uint32_t)USARTx;
bogdanm	0:9b334a45a8ff	1793
bogdanm	0:9b334a45a8ff	1794	/* Get the USART register index */
bogdanm	0:9b334a45a8ff	1795	usartreg = (((uint16_t)USART_IT) >> 0x08);
bogdanm	0:9b334a45a8ff	1796
bogdanm	0:9b334a45a8ff	1797	/* Get the interrupt position */
bogdanm	0:9b334a45a8ff	1798	itpos = USART_IT & IT_MASK;
bogdanm	0:9b334a45a8ff	1799	itmask = (((uint32_t)0x01) << itpos);
bogdanm	0:9b334a45a8ff	1800
bogdanm	0:9b334a45a8ff	1801	if (usartreg == 0x02) /* The IT is in CR2 register */
bogdanm	0:9b334a45a8ff	1802	{
bogdanm	0:9b334a45a8ff	1803	usartxbase += 0x04;
bogdanm	0:9b334a45a8ff	1804	}
bogdanm	0:9b334a45a8ff	1805	else if (usartreg == 0x03) /* The IT is in CR3 register */
bogdanm	0:9b334a45a8ff	1806	{
bogdanm	0:9b334a45a8ff	1807	usartxbase += 0x08;
bogdanm	0:9b334a45a8ff	1808	}
bogdanm	0:9b334a45a8ff	1809	else /* The IT is in CR1 register */
bogdanm	0:9b334a45a8ff	1810	{
bogdanm	0:9b334a45a8ff	1811	}
bogdanm	0:9b334a45a8ff	1812	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	1813	{
bogdanm	0:9b334a45a8ff	1814	(__IO uint32_t)usartxbase \|= itmask;
bogdanm	0:9b334a45a8ff	1815	}
bogdanm	0:9b334a45a8ff	1816	else
bogdanm	0:9b334a45a8ff	1817	{
bogdanm	0:9b334a45a8ff	1818	(__IO uint32_t)usartxbase &= ~itmask;
bogdanm	0:9b334a45a8ff	1819	}
bogdanm	0:9b334a45a8ff	1820	}
bogdanm	0:9b334a45a8ff	1821
bogdanm	0:9b334a45a8ff	1822	/**
bogdanm	0:9b334a45a8ff	1823	* @brief Enables the specified USART's Request.
bogdanm	0:9b334a45a8ff	1824	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1825	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1826	* @param USART_Request: specifies the USART request.
bogdanm	0:9b334a45a8ff	1827	* This parameter can be any combination of the following values:
bogdanm	0:9b334a45a8ff	1828	* @arg USART_Request_TXFRQ: Transmit data flush ReQuest
bogdanm	0:9b334a45a8ff	1829	* @arg USART_Request_RXFRQ: Receive data flush ReQuest
bogdanm	0:9b334a45a8ff	1830	* @arg USART_Request_MMRQ: Mute Mode ReQuest
bogdanm	0:9b334a45a8ff	1831	* @arg USART_Request_SBKRQ: Send Break ReQuest
bogdanm	0:9b334a45a8ff	1832	* @arg USART_Request_ABRRQ: Auto Baud Rate ReQuest
bogdanm	0:9b334a45a8ff	1833	* @param NewState: new state of the DMA interface when reception error occurs.
bogdanm	0:9b334a45a8ff	1834	* This parameter can be: ENABLE or DISABLE.
bogdanm	0:9b334a45a8ff	1835	* @retval None
bogdanm	0:9b334a45a8ff	1836	*/
bogdanm	0:9b334a45a8ff	1837	void USART_RequestCmd(USART_TypeDef* USARTx, uint32_t USART_Request, FunctionalState NewState)
bogdanm	0:9b334a45a8ff	1838	{
bogdanm	0:9b334a45a8ff	1839	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1840	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1841	assert_param(IS_USART_REQUEST(USART_Request));
bogdanm	0:9b334a45a8ff	1842	assert_param(IS_FUNCTIONAL_STATE(NewState));
bogdanm	0:9b334a45a8ff	1843
bogdanm	0:9b334a45a8ff	1844	if (NewState != DISABLE)
bogdanm	0:9b334a45a8ff	1845	{
bogdanm	0:9b334a45a8ff	1846	/* Enable the USART ReQuest by setting the dedicated request bit in the RQR
bogdanm	0:9b334a45a8ff	1847	register.*/
bogdanm	0:9b334a45a8ff	1848	USARTx->RQR \|= USART_Request;
bogdanm	0:9b334a45a8ff	1849	}
bogdanm	0:9b334a45a8ff	1850	else
bogdanm	0:9b334a45a8ff	1851	{
bogdanm	0:9b334a45a8ff	1852	/* Disable the USART ReQuest by clearing the dedicated request bit in the RQR
bogdanm	0:9b334a45a8ff	1853	register.*/
bogdanm	0:9b334a45a8ff	1854	USARTx->RQR &= (uint32_t)~USART_Request;
bogdanm	0:9b334a45a8ff	1855	}
bogdanm	0:9b334a45a8ff	1856	}
bogdanm	0:9b334a45a8ff	1857
bogdanm	0:9b334a45a8ff	1858	/**
bogdanm	0:9b334a45a8ff	1859	* @brief Enables or disables the USART's Overrun detection.
bogdanm	0:9b334a45a8ff	1860	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1861	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1862	* @param USART_OVRDetection: specifies the OVR detection status in case of OVR error.
bogdanm	0:9b334a45a8ff	1863	* This parameter can be any combination of the following values:
bogdanm	0:9b334a45a8ff	1864	* @arg USART_OVRDetection_Enable: OVR error detection enabled when the USART OVR error
bogdanm	0:9b334a45a8ff	1865	* is asserted.
bogdanm	0:9b334a45a8ff	1866	* @arg USART_OVRDetection_Disable: OVR error detection disabled when the USART OVR error
bogdanm	0:9b334a45a8ff	1867	* is asserted.
bogdanm	0:9b334a45a8ff	1868	* @retval None
bogdanm	0:9b334a45a8ff	1869	*/
bogdanm	0:9b334a45a8ff	1870	void USART_OverrunDetectionConfig(USART_TypeDef* USARTx, uint32_t USART_OVRDetection)
bogdanm	0:9b334a45a8ff	1871	{
bogdanm	0:9b334a45a8ff	1872	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1873	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1874	assert_param(IS_USART_OVRDETECTION(USART_OVRDetection));
bogdanm	0:9b334a45a8ff	1875
bogdanm	0:9b334a45a8ff	1876	/* Clear the OVR detection bit */
bogdanm	0:9b334a45a8ff	1877	USARTx->CR3 &= (uint32_t)~((uint32_t)USART_CR3_OVRDIS);
bogdanm	0:9b334a45a8ff	1878	/* Set the new value for the OVR detection bit */
bogdanm	0:9b334a45a8ff	1879	USARTx->CR3 \|= USART_OVRDetection;
bogdanm	0:9b334a45a8ff	1880	}
bogdanm	0:9b334a45a8ff	1881
bogdanm	0:9b334a45a8ff	1882	/**
bogdanm	0:9b334a45a8ff	1883	* @brief Checks whether the specified USART flag is set or not.
bogdanm	0:9b334a45a8ff	1884	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1885	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1886	* @param USART_FLAG: specifies the flag to check.
bogdanm	0:9b334a45a8ff	1887	* This parameter can be one of the following values:
bogdanm	0:9b334a45a8ff	1888	* @arg USART_FLAG_REACK: Receive Enable acknowledge flag.
bogdanm	0:9b334a45a8ff	1889	* @arg USART_FLAG_TEACK: Transmit Enable acknowledge flag.
bogdanm	0:9b334a45a8ff	1890	* @arg USART_FLAG_WUF: Wake up flag.
bogdanm	0:9b334a45a8ff	1891	* @arg USART_FLAG_RWU: Receive Wake up flag.
bogdanm	0:9b334a45a8ff	1892	* @arg USART_FLAG_SBK: Send Break flag.
bogdanm	0:9b334a45a8ff	1893	* @arg USART_FLAG_CMF: Character match flag.
bogdanm	0:9b334a45a8ff	1894	* @arg USART_FLAG_BUSY: Busy flag.
bogdanm	0:9b334a45a8ff	1895	* @arg USART_FLAG_ABRF: Auto baud rate flag.
bogdanm	0:9b334a45a8ff	1896	* @arg USART_FLAG_ABRE: Auto baud rate error flag.
bogdanm	0:9b334a45a8ff	1897	* @arg USART_FLAG_EOBF: End of block flag.
bogdanm	0:9b334a45a8ff	1898	* @arg USART_FLAG_RTOF: Receive time out flag.
bogdanm	0:9b334a45a8ff	1899	* @arg USART_FLAG_nCTSS: Inverted nCTS input bit status.
bogdanm	0:9b334a45a8ff	1900	* @arg USART_FLAG_CTS: CTS Change flag.
bogdanm	0:9b334a45a8ff	1901	* @arg USART_FLAG_LBD: LIN Break detection flag.
bogdanm	0:9b334a45a8ff	1902	* @arg USART_FLAG_TXE: Transmit data register empty flag.
bogdanm	0:9b334a45a8ff	1903	* @arg USART_FLAG_TC: Transmission Complete flag.
bogdanm	0:9b334a45a8ff	1904	* @arg USART_FLAG_RXNE: Receive data register not empty flag.
bogdanm	0:9b334a45a8ff	1905	* @arg USART_FLAG_IDLE: Idle Line detection flag.
bogdanm	0:9b334a45a8ff	1906	* @arg USART_FLAG_ORE: OverRun Error flag.
bogdanm	0:9b334a45a8ff	1907	* @arg USART_FLAG_NE: Noise Error flag.
bogdanm	0:9b334a45a8ff	1908	* @arg USART_FLAG_FE: Framing Error flag.
bogdanm	0:9b334a45a8ff	1909	* @arg USART_FLAG_PE: Parity Error flag.
bogdanm	0:9b334a45a8ff	1910	* @retval The new state of USART_FLAG (SET or RESET).
bogdanm	0:9b334a45a8ff	1911	*/
bogdanm	0:9b334a45a8ff	1912	FlagStatus USART_GetFlagStatus(USART_TypeDef* USARTx, uint32_t USART_FLAG)
bogdanm	0:9b334a45a8ff	1913	{
bogdanm	0:9b334a45a8ff	1914	FlagStatus bitstatus = RESET;
bogdanm	0:9b334a45a8ff	1915	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1916	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1917	assert_param(IS_USART_FLAG(USART_FLAG));
bogdanm	0:9b334a45a8ff	1918
bogdanm	0:9b334a45a8ff	1919	if ((USARTx->ISR & USART_FLAG) != (uint16_t)RESET)
bogdanm	0:9b334a45a8ff	1920	{
bogdanm	0:9b334a45a8ff	1921	bitstatus = SET;
bogdanm	0:9b334a45a8ff	1922	}
bogdanm	0:9b334a45a8ff	1923	else
bogdanm	0:9b334a45a8ff	1924	{
bogdanm	0:9b334a45a8ff	1925	bitstatus = RESET;
bogdanm	0:9b334a45a8ff	1926	}
bogdanm	0:9b334a45a8ff	1927	return bitstatus;
bogdanm	0:9b334a45a8ff	1928	}
bogdanm	0:9b334a45a8ff	1929
bogdanm	0:9b334a45a8ff	1930	/**
bogdanm	0:9b334a45a8ff	1931	* @brief Clears the USARTx's pending flags.
bogdanm	0:9b334a45a8ff	1932	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1933	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1934	* @param USART_FLAG: specifies the flag to clear.
bogdanm	0:9b334a45a8ff	1935	* This parameter can be any combination of the following values:
bogdanm	0:9b334a45a8ff	1936	* @arg USART_FLAG_WUF: Wake up flag.
bogdanm	0:9b334a45a8ff	1937	* @arg USART_FLAG_CMF: Character match flag.
bogdanm	0:9b334a45a8ff	1938	* @arg USART_FLAG_EOBF: End of block flag.
bogdanm	0:9b334a45a8ff	1939	* @arg USART_FLAG_RTOF: Receive time out flag.
bogdanm	0:9b334a45a8ff	1940	* @arg USART_FLAG_CTS: CTS Change flag.
bogdanm	0:9b334a45a8ff	1941	* @arg USART_FLAG_LBD: LIN Break detection flag.
bogdanm	0:9b334a45a8ff	1942	* @arg USART_FLAG_TC: Transmission Complete flag.
bogdanm	0:9b334a45a8ff	1943	* @arg USART_FLAG_IDLE: IDLE line detected flag.
bogdanm	0:9b334a45a8ff	1944	* @arg USART_FLAG_ORE: OverRun Error flag.
bogdanm	0:9b334a45a8ff	1945	* @arg USART_FLAG_NE: Noise Error flag.
bogdanm	0:9b334a45a8ff	1946	* @arg USART_FLAG_FE: Framing Error flag.
bogdanm	0:9b334a45a8ff	1947	* @arg USART_FLAG_PE: Parity Errorflag.
bogdanm	0:9b334a45a8ff	1948	*
bogdanm	0:9b334a45a8ff	1949	* @note
bogdanm	0:9b334a45a8ff	1950	* - RXNE pending bit is cleared by a read to the USART_RDR register
bogdanm	0:9b334a45a8ff	1951	* (USART_ReceiveData()) or by writing 1 to the RXFRQ in the register USART_RQR
bogdanm	0:9b334a45a8ff	1952	* (USART_RequestCmd()).
bogdanm	0:9b334a45a8ff	1953	* - TC flag can be also cleared by software sequence: a read operation to
bogdanm	0:9b334a45a8ff	1954	* USART_SR register (USART_GetFlagStatus()) followed by a write operation
bogdanm	0:9b334a45a8ff	1955	* to USART_TDR register (USART_SendData()).
bogdanm	0:9b334a45a8ff	1956	* - TXE flag is cleared by a write to the USART_TDR register
bogdanm	0:9b334a45a8ff	1957	* (USART_SendData()) or by writing 1 to the TXFRQ in the register USART_RQR
bogdanm	0:9b334a45a8ff	1958	* (USART_RequestCmd()).
bogdanm	0:9b334a45a8ff	1959	* - SBKF flag is cleared by 1 to the SBKRQ in the register USART_RQR
bogdanm	0:9b334a45a8ff	1960	* (USART_RequestCmd()).
bogdanm	0:9b334a45a8ff	1961	* @retval None
bogdanm	0:9b334a45a8ff	1962	*/
bogdanm	0:9b334a45a8ff	1963	void USART_ClearFlag(USART_TypeDef* USARTx, uint32_t USART_FLAG)
bogdanm	0:9b334a45a8ff	1964	{
bogdanm	0:9b334a45a8ff	1965	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1966	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	1967	assert_param(IS_USART_CLEAR_FLAG(USART_FLAG));
bogdanm	0:9b334a45a8ff	1968
bogdanm	0:9b334a45a8ff	1969	USARTx->ICR = USART_FLAG;
bogdanm	0:9b334a45a8ff	1970	}
bogdanm	0:9b334a45a8ff	1971
bogdanm	0:9b334a45a8ff	1972	/**
bogdanm	0:9b334a45a8ff	1973	* @brief Checks whether the specified USART interrupt has occurred or not.
bogdanm	0:9b334a45a8ff	1974	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	1975	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	1976	* @param USART_IT: specifies the USART interrupt source to check.
bogdanm	0:9b334a45a8ff	1977	* This parameter can be one of the following values:
bogdanm	0:9b334a45a8ff	1978	* @arg USART_IT_WU: Wake up interrupt.
bogdanm	0:9b334a45a8ff	1979	* @arg USART_IT_CM: Character match interrupt.
bogdanm	0:9b334a45a8ff	1980	* @arg USART_IT_EOB: End of block interrupt.
bogdanm	0:9b334a45a8ff	1981	* @arg USART_IT_RTO: Receive time out interrupt.
bogdanm	0:9b334a45a8ff	1982	* @arg USART_IT_CTS: CTS change interrupt.
bogdanm	0:9b334a45a8ff	1983	* @arg USART_IT_LBD: LIN Break detection interrupt.
bogdanm	0:9b334a45a8ff	1984	* @arg USART_IT_TXE: Tansmit Data Register empty interrupt.
bogdanm	0:9b334a45a8ff	1985	* @arg USART_IT_TC: Transmission complete interrupt.
bogdanm	0:9b334a45a8ff	1986	* @arg USART_IT_RXNE: Receive Data register not empty interrupt.
bogdanm	0:9b334a45a8ff	1987	* @arg USART_IT_IDLE: Idle line detection interrupt.
bogdanm	0:9b334a45a8ff	1988	* @arg USART_IT_ORE: OverRun Error interrupt.
bogdanm	0:9b334a45a8ff	1989	* @arg USART_IT_NE: Noise Error interrupt.
bogdanm	0:9b334a45a8ff	1990	* @arg USART_IT_FE: Framing Error interrupt.
bogdanm	0:9b334a45a8ff	1991	* @arg USART_IT_PE: Parity Error interrupt.
bogdanm	0:9b334a45a8ff	1992	* @retval The new state of USART_IT (SET or RESET).
bogdanm	0:9b334a45a8ff	1993	*/
bogdanm	0:9b334a45a8ff	1994	ITStatus USART_GetITStatus(USART_TypeDef* USARTx, uint32_t USART_IT)
bogdanm	0:9b334a45a8ff	1995	{
bogdanm	0:9b334a45a8ff	1996	uint32_t bitpos = 0, itmask = 0, usartreg = 0;
bogdanm	0:9b334a45a8ff	1997	ITStatus bitstatus = RESET;
bogdanm	0:9b334a45a8ff	1998	/* Check the parameters */
bogdanm	0:9b334a45a8ff	1999	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	2000	assert_param(IS_USART_GET_IT(USART_IT));
bogdanm	0:9b334a45a8ff	2001
bogdanm	0:9b334a45a8ff	2002	/* Get the USART register index */
bogdanm	0:9b334a45a8ff	2003	usartreg = (((uint16_t)USART_IT) >> 0x08);
bogdanm	0:9b334a45a8ff	2004	/* Get the interrupt position */
bogdanm	0:9b334a45a8ff	2005	itmask = USART_IT & IT_MASK;
bogdanm	0:9b334a45a8ff	2006	itmask = (uint32_t)0x01 << itmask;
bogdanm	0:9b334a45a8ff	2007
bogdanm	0:9b334a45a8ff	2008	if (usartreg == 0x01) /* The IT is in CR1 register */
bogdanm	0:9b334a45a8ff	2009	{
bogdanm	0:9b334a45a8ff	2010	itmask &= USARTx->CR1;
bogdanm	0:9b334a45a8ff	2011	}
bogdanm	0:9b334a45a8ff	2012	else if (usartreg == 0x02) /* The IT is in CR2 register */
bogdanm	0:9b334a45a8ff	2013	{
bogdanm	0:9b334a45a8ff	2014	itmask &= USARTx->CR2;
bogdanm	0:9b334a45a8ff	2015	}
bogdanm	0:9b334a45a8ff	2016	else /* The IT is in CR3 register */
bogdanm	0:9b334a45a8ff	2017	{
bogdanm	0:9b334a45a8ff	2018	itmask &= USARTx->CR3;
bogdanm	0:9b334a45a8ff	2019	}
bogdanm	0:9b334a45a8ff	2020
bogdanm	0:9b334a45a8ff	2021	bitpos = USART_IT >> 0x10;
bogdanm	0:9b334a45a8ff	2022	bitpos = (uint32_t)0x01 << bitpos;
bogdanm	0:9b334a45a8ff	2023	bitpos &= USARTx->ISR;
bogdanm	0:9b334a45a8ff	2024	if ((itmask != (uint16_t)RESET)&&(bitpos != (uint16_t)RESET))
bogdanm	0:9b334a45a8ff	2025	{
bogdanm	0:9b334a45a8ff	2026	bitstatus = SET;
bogdanm	0:9b334a45a8ff	2027	}
bogdanm	0:9b334a45a8ff	2028	else
bogdanm	0:9b334a45a8ff	2029	{
bogdanm	0:9b334a45a8ff	2030	bitstatus = RESET;
bogdanm	0:9b334a45a8ff	2031	}
bogdanm	0:9b334a45a8ff	2032
bogdanm	0:9b334a45a8ff	2033	return bitstatus;
bogdanm	0:9b334a45a8ff	2034	}
bogdanm	0:9b334a45a8ff	2035
bogdanm	0:9b334a45a8ff	2036	/**
bogdanm	0:9b334a45a8ff	2037	* @brief Clears the USARTx's interrupt pending bits.
bogdanm	0:9b334a45a8ff	2038	* @param USARTx: Select the USART peripheral. This parameter can be one of the
bogdanm	0:9b334a45a8ff	2039	* following values: USART1 or USART2 or USART3 or UART4 or UART5.
bogdanm	0:9b334a45a8ff	2040	* @param USART_IT: specifies the interrupt pending bit to clear.
bogdanm	0:9b334a45a8ff	2041	* This parameter can be one of the following values:
bogdanm	0:9b334a45a8ff	2042	* @arg USART_IT_WU: Wake up interrupt.
bogdanm	0:9b334a45a8ff	2043	* @arg USART_IT_CM: Character match interrupt.
bogdanm	0:9b334a45a8ff	2044	* @arg USART_IT_EOB: End of block interrupt.
bogdanm	0:9b334a45a8ff	2045	* @arg USART_IT_RTO: Receive time out interrupt.
bogdanm	0:9b334a45a8ff	2046	* @arg USART_IT_CTS: CTS change interrupt.
bogdanm	0:9b334a45a8ff	2047	* @arg USART_IT_LBD: LIN Break detection interrupt.
bogdanm	0:9b334a45a8ff	2048	* @arg USART_IT_TC: Transmission complete interrupt.
bogdanm	0:9b334a45a8ff	2049	* @arg USART_IT_IDLE: IDLE line detected interrupt.
bogdanm	0:9b334a45a8ff	2050	* @arg USART_IT_ORE: OverRun Error interrupt.
bogdanm	0:9b334a45a8ff	2051	* @arg USART_IT_NE: Noise Error interrupt.
bogdanm	0:9b334a45a8ff	2052	* @arg USART_IT_FE: Framing Error interrupt.
bogdanm	0:9b334a45a8ff	2053	* @arg USART_IT_PE: Parity Error interrupt.
bogdanm	0:9b334a45a8ff	2054	* @note
bogdanm	0:9b334a45a8ff	2055	* - RXNE pending bit is cleared by a read to the USART_RDR register
bogdanm	0:9b334a45a8ff	2056	* (USART_ReceiveData()) or by writing 1 to the RXFRQ in the register USART_RQR
bogdanm	0:9b334a45a8ff	2057	* (USART_RequestCmd()).
bogdanm	0:9b334a45a8ff	2058	* - TC pending bit can be also cleared by software sequence: a read
bogdanm	0:9b334a45a8ff	2059	* operation to USART_SR register (USART_GetITStatus()) followed by a write
bogdanm	0:9b334a45a8ff	2060	* operation to USART_TDR register (USART_SendData()).
bogdanm	0:9b334a45a8ff	2061	* - TXE pending bit is cleared by a write to the USART_TDR register
bogdanm	0:9b334a45a8ff	2062	* (USART_SendData()) or by writing 1 to the TXFRQ in the register USART_RQR
bogdanm	0:9b334a45a8ff	2063	* (USART_RequestCmd()).
bogdanm	0:9b334a45a8ff	2064	* @retval None
bogdanm	0:9b334a45a8ff	2065	*/
bogdanm	0:9b334a45a8ff	2066	void USART_ClearITPendingBit(USART_TypeDef* USARTx, uint32_t USART_IT)
bogdanm	0:9b334a45a8ff	2067	{
bogdanm	0:9b334a45a8ff	2068	uint32_t bitpos = 0, itmask = 0;
bogdanm	0:9b334a45a8ff	2069	/* Check the parameters */
bogdanm	0:9b334a45a8ff	2070	assert_param(IS_USART_ALL_PERIPH(USARTx));
bogdanm	0:9b334a45a8ff	2071	assert_param(IS_USART_CLEAR_IT(USART_IT));
bogdanm	0:9b334a45a8ff	2072
bogdanm	0:9b334a45a8ff	2073	bitpos = USART_IT >> 0x10;
bogdanm	0:9b334a45a8ff	2074	itmask = ((uint32_t)0x01 << (uint32_t)bitpos);
bogdanm	0:9b334a45a8ff	2075	USARTx->ICR = (uint32_t)itmask;
bogdanm	0:9b334a45a8ff	2076	}
bogdanm	0:9b334a45a8ff	2077
bogdanm	0:9b334a45a8ff	2078	/**
bogdanm	0:9b334a45a8ff	2079	* @}
bogdanm	0:9b334a45a8ff	2080	*/
bogdanm	0:9b334a45a8ff	2081
bogdanm	0:9b334a45a8ff	2082	/**
bogdanm	0:9b334a45a8ff	2083	* @}
bogdanm	0:9b334a45a8ff	2084	*/
bogdanm	0:9b334a45a8ff	2085
bogdanm	0:9b334a45a8ff	2086	/**
bogdanm	0:9b334a45a8ff	2087	* @}
bogdanm	0:9b334a45a8ff	2088	*/
bogdanm	0:9b334a45a8ff	2089
bogdanm	0:9b334a45a8ff	2090	/**
bogdanm	0:9b334a45a8ff	2091	* @}
bogdanm	0:9b334a45a8ff	2092	*/
bogdanm	0:9b334a45a8ff	2093
bogdanm	0:9b334a45a8ff	2094	/********************** (C) COPYRIGHT STMicroelectronics *END OF FILE**/

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Type:	Library
Created:	19 Feb 2016
Imports:	1
Forks:	0
Commits:	69
Dependents:	0
Dependencies:	0
Followers:	1

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targets/cmsis/TARGET_STM/TARGET_STM32F3XX/stm32f30x_usart.c@0:9b334a45a8ff, 2015-10-01 (annotated)

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targets/cmsis/TARGET_STM/TARGET_STM32F3XX/stm32f30x_usart.c@0:9b334a45a8ff, 2015-10-01 (annotated)

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