PHung Tung
SPKT
Dependencies: F746_GUI SD_PlayerSkeleton F746_SAI_IO
SRC_STM32F7/targets/cmsis/TARGET_STM/TARGET_STM32F7/stm32f7xx_hal_cec.c@0:8ede47d38d10, 2019-06-04 (annotated)
- Committer:
- phungductung
- Date:
- Tue Jun 04 21:37:21 2019 +0000
- Revision:
- 0:8ede47d38d10
SPKT
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| phungductung | 0:8ede47d38d10 | 1 | /** |
| phungductung | 0:8ede47d38d10 | 2 | ****************************************************************************** |
| phungductung | 0:8ede47d38d10 | 3 | * @file stm32f7xx_hal_cec.c |
| phungductung | 0:8ede47d38d10 | 4 | * @author MCD Application Team |
| phungductung | 0:8ede47d38d10 | 5 | * @version V1.0.4 |
| phungductung | 0:8ede47d38d10 | 6 | * @date 09-December-2015 |
| phungductung | 0:8ede47d38d10 | 7 | * @brief CEC HAL module driver. |
| phungductung | 0:8ede47d38d10 | 8 | * This file provides firmware functions to manage the following |
| phungductung | 0:8ede47d38d10 | 9 | * functionalities of the High Definition Multimedia Interface |
| phungductung | 0:8ede47d38d10 | 10 | * Consumer Electronics Control Peripheral (CEC). |
| phungductung | 0:8ede47d38d10 | 11 | * + Initialization and de-initialization function |
| phungductung | 0:8ede47d38d10 | 12 | * + IO operation function |
| phungductung | 0:8ede47d38d10 | 13 | * + Peripheral Control function |
| phungductung | 0:8ede47d38d10 | 14 | * |
| phungductung | 0:8ede47d38d10 | 15 | * |
| phungductung | 0:8ede47d38d10 | 16 | @verbatim |
| phungductung | 0:8ede47d38d10 | 17 | =============================================================================== |
| phungductung | 0:8ede47d38d10 | 18 | ##### How to use this driver ##### |
| phungductung | 0:8ede47d38d10 | 19 | =============================================================================== |
| phungductung | 0:8ede47d38d10 | 20 | [..] |
| phungductung | 0:8ede47d38d10 | 21 | The CEC HAL driver can be used as follow: |
| phungductung | 0:8ede47d38d10 | 22 | |
| phungductung | 0:8ede47d38d10 | 23 | (#) Declare a CEC_HandleTypeDef handle structure. |
| phungductung | 0:8ede47d38d10 | 24 | (#) Initialize the CEC low level resources by implementing the HAL_CEC_MspInit ()API: |
| phungductung | 0:8ede47d38d10 | 25 | (##) Enable the CEC interface clock. |
| phungductung | 0:8ede47d38d10 | 26 | (##) CEC pins configuration: |
| phungductung | 0:8ede47d38d10 | 27 | (+++) Enable the clock for the CEC GPIOs. |
| phungductung | 0:8ede47d38d10 | 28 | (+++) Configure these CEC pins as alternate function pull-up. |
| phungductung | 0:8ede47d38d10 | 29 | (##) NVIC configuration if you need to use interrupt process (HAL_CEC_Transmit_IT() |
| phungductung | 0:8ede47d38d10 | 30 | and HAL_CEC_Receive_IT() APIs): |
| phungductung | 0:8ede47d38d10 | 31 | (+++) Configure the CEC interrupt priority. |
| phungductung | 0:8ede47d38d10 | 32 | (+++) Enable the NVIC CEC IRQ handle. |
| phungductung | 0:8ede47d38d10 | 33 | (+++) The specific CEC interrupts (Transmission complete interrupt, |
| phungductung | 0:8ede47d38d10 | 34 | RXNE interrupt and Error Interrupts) will be managed using the macros |
| phungductung | 0:8ede47d38d10 | 35 | __HAL_CEC_ENABLE_IT() and __HAL_CEC_DISABLE_IT() inside the transmit |
| phungductung | 0:8ede47d38d10 | 36 | and receive process. |
| phungductung | 0:8ede47d38d10 | 37 | |
| phungductung | 0:8ede47d38d10 | 38 | (#) Program the Signal Free Time (SFT) and SFT option, Tolerance, reception stop in |
| phungductung | 0:8ede47d38d10 | 39 | in case of Bit Rising Error, Error-Bit generation conditions, device logical |
| phungductung | 0:8ede47d38d10 | 40 | address and Listen mode in the hcec Init structure. |
| phungductung | 0:8ede47d38d10 | 41 | |
| phungductung | 0:8ede47d38d10 | 42 | (#) Initialize the CEC registers by calling the HAL_CEC_Init() API. |
| phungductung | 0:8ede47d38d10 | 43 | |
| phungductung | 0:8ede47d38d10 | 44 | [..] |
| phungductung | 0:8ede47d38d10 | 45 | (@) This API (HAL_CEC_Init()) configures also the low level Hardware (GPIO, CLOCK, CORTEX...etc) |
| phungductung | 0:8ede47d38d10 | 46 | by calling the customed HAL_CEC_MspInit() API. |
| phungductung | 0:8ede47d38d10 | 47 | |
| phungductung | 0:8ede47d38d10 | 48 | @endverbatim |
| phungductung | 0:8ede47d38d10 | 49 | ****************************************************************************** |
| phungductung | 0:8ede47d38d10 | 50 | * @attention |
| phungductung | 0:8ede47d38d10 | 51 | * |
| phungductung | 0:8ede47d38d10 | 52 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> |
| phungductung | 0:8ede47d38d10 | 53 | * |
| phungductung | 0:8ede47d38d10 | 54 | * Redistribution and use in source and binary forms, with or without modification, |
| phungductung | 0:8ede47d38d10 | 55 | * are permitted provided that the following conditions are met: |
| phungductung | 0:8ede47d38d10 | 56 | * 1. Redistributions of source code must retain the above copyright notice, |
| phungductung | 0:8ede47d38d10 | 57 | * this list of conditions and the following disclaimer. |
| phungductung | 0:8ede47d38d10 | 58 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| phungductung | 0:8ede47d38d10 | 59 | * this list of conditions and the following disclaimer in the documentation |
| phungductung | 0:8ede47d38d10 | 60 | * and/or other materials provided with the distribution. |
| phungductung | 0:8ede47d38d10 | 61 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| phungductung | 0:8ede47d38d10 | 62 | * may be used to endorse or promote products derived from this software |
| phungductung | 0:8ede47d38d10 | 63 | * without specific prior written permission. |
| phungductung | 0:8ede47d38d10 | 64 | * |
| phungductung | 0:8ede47d38d10 | 65 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| phungductung | 0:8ede47d38d10 | 66 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| phungductung | 0:8ede47d38d10 | 67 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| phungductung | 0:8ede47d38d10 | 68 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| phungductung | 0:8ede47d38d10 | 69 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| phungductung | 0:8ede47d38d10 | 70 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| phungductung | 0:8ede47d38d10 | 71 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| phungductung | 0:8ede47d38d10 | 72 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| phungductung | 0:8ede47d38d10 | 73 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| phungductung | 0:8ede47d38d10 | 74 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| phungductung | 0:8ede47d38d10 | 75 | * |
| phungductung | 0:8ede47d38d10 | 76 | ****************************************************************************** |
| phungductung | 0:8ede47d38d10 | 77 | */ |
| phungductung | 0:8ede47d38d10 | 78 | |
| phungductung | 0:8ede47d38d10 | 79 | /* Includes ------------------------------------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 80 | #include "stm32f7xx_hal.h" |
| phungductung | 0:8ede47d38d10 | 81 | |
| phungductung | 0:8ede47d38d10 | 82 | /** @addtogroup STM32F7xx_HAL_Driver |
| phungductung | 0:8ede47d38d10 | 83 | * @{ |
| phungductung | 0:8ede47d38d10 | 84 | */ |
| phungductung | 0:8ede47d38d10 | 85 | |
| phungductung | 0:8ede47d38d10 | 86 | /** @defgroup CEC CEC |
| phungductung | 0:8ede47d38d10 | 87 | * @brief HAL CEC module driver |
| phungductung | 0:8ede47d38d10 | 88 | * @{ |
| phungductung | 0:8ede47d38d10 | 89 | */ |
| phungductung | 0:8ede47d38d10 | 90 | #ifdef HAL_CEC_MODULE_ENABLED |
| phungductung | 0:8ede47d38d10 | 91 | |
| phungductung | 0:8ede47d38d10 | 92 | /* Private typedef -----------------------------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 93 | /* Private define ------------------------------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 94 | /** @defgroup CEC_Private_Constants CEC Private Constants |
| phungductung | 0:8ede47d38d10 | 95 | * @{ |
| phungductung | 0:8ede47d38d10 | 96 | */ |
| phungductung | 0:8ede47d38d10 | 97 | #define CEC_CFGR_FIELDS (CEC_CFGR_SFT | CEC_CFGR_RXTOL | CEC_CFGR_BRESTP \ |
| phungductung | 0:8ede47d38d10 | 98 | | CEC_CFGR_BREGEN | CEC_CFGR_LBPEGEN | CEC_CFGR_SFTOPT \ |
| phungductung | 0:8ede47d38d10 | 99 | | CEC_CFGR_BRDNOGEN | CEC_CFGR_OAR | CEC_CFGR_LSTN) |
| phungductung | 0:8ede47d38d10 | 100 | /** |
| phungductung | 0:8ede47d38d10 | 101 | * @} |
| phungductung | 0:8ede47d38d10 | 102 | */ |
| phungductung | 0:8ede47d38d10 | 103 | |
| phungductung | 0:8ede47d38d10 | 104 | /* Private macro -------------------------------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 105 | /* Private variables ---------------------------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 106 | /* Private function prototypes -----------------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 107 | /** @defgroup CEC_Private_Functions CEC Private Functions |
| phungductung | 0:8ede47d38d10 | 108 | * @{ |
| phungductung | 0:8ede47d38d10 | 109 | */ |
| phungductung | 0:8ede47d38d10 | 110 | static HAL_StatusTypeDef CEC_Transmit_IT(CEC_HandleTypeDef *hcec); |
| phungductung | 0:8ede47d38d10 | 111 | static HAL_StatusTypeDef CEC_Receive_IT(CEC_HandleTypeDef *hcec); |
| phungductung | 0:8ede47d38d10 | 112 | /** |
| phungductung | 0:8ede47d38d10 | 113 | * @} |
| phungductung | 0:8ede47d38d10 | 114 | */ |
| phungductung | 0:8ede47d38d10 | 115 | |
| phungductung | 0:8ede47d38d10 | 116 | /* Exported functions ---------------------------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 117 | |
| phungductung | 0:8ede47d38d10 | 118 | /** @defgroup CEC_Exported_Functions CEC Exported Functions |
| phungductung | 0:8ede47d38d10 | 119 | * @{ |
| phungductung | 0:8ede47d38d10 | 120 | */ |
| phungductung | 0:8ede47d38d10 | 121 | |
| phungductung | 0:8ede47d38d10 | 122 | /** @defgroup CEC_Exported_Functions_Group1 Initialization and de-initialization functions |
| phungductung | 0:8ede47d38d10 | 123 | * @brief Initialization and Configuration functions |
| phungductung | 0:8ede47d38d10 | 124 | * |
| phungductung | 0:8ede47d38d10 | 125 | @verbatim |
| phungductung | 0:8ede47d38d10 | 126 | =============================================================================== |
| phungductung | 0:8ede47d38d10 | 127 | ##### Initialization and Configuration functions ##### |
| phungductung | 0:8ede47d38d10 | 128 | =============================================================================== |
| phungductung | 0:8ede47d38d10 | 129 | [..] |
| phungductung | 0:8ede47d38d10 | 130 | This subsection provides a set of functions allowing to initialize the CEC |
| phungductung | 0:8ede47d38d10 | 131 | (+) The following parameters need to be configured: |
| phungductung | 0:8ede47d38d10 | 132 | (++) SignalFreeTime |
| phungductung | 0:8ede47d38d10 | 133 | (++) Tolerance |
| phungductung | 0:8ede47d38d10 | 134 | (++) BRERxStop (RX stopped or not upon Bit Rising Error) |
| phungductung | 0:8ede47d38d10 | 135 | (++) BREErrorBitGen (Error-Bit generation in case of Bit Rising Error) |
| phungductung | 0:8ede47d38d10 | 136 | (++) LBPEErrorBitGen (Error-Bit generation in case of Long Bit Period Error) |
| phungductung | 0:8ede47d38d10 | 137 | (++) BroadcastMsgNoErrorBitGen (Error-bit generation in case of broadcast message error) |
| phungductung | 0:8ede47d38d10 | 138 | (++) SignalFreeTimeOption (SFT Timer start definition) |
| phungductung | 0:8ede47d38d10 | 139 | (++) OwnAddress (CEC device address) |
| phungductung | 0:8ede47d38d10 | 140 | (++) ListenMode |
| phungductung | 0:8ede47d38d10 | 141 | |
| phungductung | 0:8ede47d38d10 | 142 | @endverbatim |
| phungductung | 0:8ede47d38d10 | 143 | * @{ |
| phungductung | 0:8ede47d38d10 | 144 | */ |
| phungductung | 0:8ede47d38d10 | 145 | |
| phungductung | 0:8ede47d38d10 | 146 | /** |
| phungductung | 0:8ede47d38d10 | 147 | * @brief Initializes the CEC mode according to the specified |
| phungductung | 0:8ede47d38d10 | 148 | * parameters in the CEC_InitTypeDef and creates the associated handle . |
| phungductung | 0:8ede47d38d10 | 149 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 150 | * @retval HAL status |
| phungductung | 0:8ede47d38d10 | 151 | */ |
| phungductung | 0:8ede47d38d10 | 152 | HAL_StatusTypeDef HAL_CEC_Init(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 153 | { |
| phungductung | 0:8ede47d38d10 | 154 | uint32_t tmpreg = 0x0; |
| phungductung | 0:8ede47d38d10 | 155 | |
| phungductung | 0:8ede47d38d10 | 156 | /* Check the CEC handle allocation */ |
| phungductung | 0:8ede47d38d10 | 157 | if(hcec == NULL) |
| phungductung | 0:8ede47d38d10 | 158 | { |
| phungductung | 0:8ede47d38d10 | 159 | return HAL_ERROR; |
| phungductung | 0:8ede47d38d10 | 160 | } |
| phungductung | 0:8ede47d38d10 | 161 | |
| phungductung | 0:8ede47d38d10 | 162 | /* Check the parameters */ |
| phungductung | 0:8ede47d38d10 | 163 | assert_param(IS_CEC_ALL_INSTANCE(hcec->Instance)); |
| phungductung | 0:8ede47d38d10 | 164 | assert_param(IS_CEC_SIGNALFREETIME(hcec->Init.SignalFreeTime)); |
| phungductung | 0:8ede47d38d10 | 165 | assert_param(IS_CEC_TOLERANCE(hcec->Init.Tolerance)); |
| phungductung | 0:8ede47d38d10 | 166 | assert_param(IS_CEC_BRERXSTOP(hcec->Init.BRERxStop)); |
| phungductung | 0:8ede47d38d10 | 167 | assert_param(IS_CEC_BREERRORBITGEN(hcec->Init.BREErrorBitGen)); |
| phungductung | 0:8ede47d38d10 | 168 | assert_param(IS_CEC_LBPEERRORBITGEN(hcec->Init.LBPEErrorBitGen)); |
| phungductung | 0:8ede47d38d10 | 169 | assert_param(IS_CEC_BROADCASTERROR_NO_ERRORBIT_GENERATION(hcec->Init.BroadcastMsgNoErrorBitGen)); |
| phungductung | 0:8ede47d38d10 | 170 | assert_param(IS_CEC_SFTOP(hcec->Init.SignalFreeTimeOption)); |
| phungductung | 0:8ede47d38d10 | 171 | assert_param(IS_CEC_OAR_ADDRESS(hcec->Init.OwnAddress)); |
| phungductung | 0:8ede47d38d10 | 172 | assert_param(IS_CEC_LISTENING_MODE(hcec->Init.ListenMode)); |
| phungductung | 0:8ede47d38d10 | 173 | assert_param(IS_CEC_ADDRESS(hcec->Init.InitiatorAddress)); |
| phungductung | 0:8ede47d38d10 | 174 | |
| phungductung | 0:8ede47d38d10 | 175 | |
| phungductung | 0:8ede47d38d10 | 176 | if(hcec->State == HAL_CEC_STATE_RESET) |
| phungductung | 0:8ede47d38d10 | 177 | { |
| phungductung | 0:8ede47d38d10 | 178 | /* Allocate lock resource and initialize it */ |
| phungductung | 0:8ede47d38d10 | 179 | hcec->Lock = HAL_UNLOCKED; |
| phungductung | 0:8ede47d38d10 | 180 | /* Init the low level hardware : GPIO, CLOCK */ |
| phungductung | 0:8ede47d38d10 | 181 | HAL_CEC_MspInit(hcec); |
| phungductung | 0:8ede47d38d10 | 182 | } |
| phungductung | 0:8ede47d38d10 | 183 | |
| phungductung | 0:8ede47d38d10 | 184 | hcec->State = HAL_CEC_STATE_BUSY; |
| phungductung | 0:8ede47d38d10 | 185 | |
| phungductung | 0:8ede47d38d10 | 186 | /* Disable the Peripheral */ |
| phungductung | 0:8ede47d38d10 | 187 | __HAL_CEC_DISABLE(hcec); |
| phungductung | 0:8ede47d38d10 | 188 | |
| phungductung | 0:8ede47d38d10 | 189 | tmpreg = hcec->Init.SignalFreeTime; |
| phungductung | 0:8ede47d38d10 | 190 | tmpreg |= hcec->Init.Tolerance; |
| phungductung | 0:8ede47d38d10 | 191 | tmpreg |= hcec->Init.BRERxStop; |
| phungductung | 0:8ede47d38d10 | 192 | tmpreg |= hcec->Init.BREErrorBitGen; |
| phungductung | 0:8ede47d38d10 | 193 | tmpreg |= hcec->Init.LBPEErrorBitGen; |
| phungductung | 0:8ede47d38d10 | 194 | tmpreg |= hcec->Init.BroadcastMsgNoErrorBitGen; |
| phungductung | 0:8ede47d38d10 | 195 | tmpreg |= hcec->Init.SignalFreeTimeOption; |
| phungductung | 0:8ede47d38d10 | 196 | tmpreg |= (hcec->Init.OwnAddress << CEC_CFGR_OAR_LSB_POS); |
| phungductung | 0:8ede47d38d10 | 197 | tmpreg |= hcec->Init.ListenMode; |
| phungductung | 0:8ede47d38d10 | 198 | |
| phungductung | 0:8ede47d38d10 | 199 | /* Write to CEC Control Register */ |
| phungductung | 0:8ede47d38d10 | 200 | MODIFY_REG(hcec->Instance->CFGR, CEC_CFGR_FIELDS, tmpreg); |
| phungductung | 0:8ede47d38d10 | 201 | |
| phungductung | 0:8ede47d38d10 | 202 | /* Enable the Peripheral */ |
| phungductung | 0:8ede47d38d10 | 203 | __HAL_CEC_ENABLE(hcec); |
| phungductung | 0:8ede47d38d10 | 204 | |
| phungductung | 0:8ede47d38d10 | 205 | hcec->State = HAL_CEC_STATE_READY; |
| phungductung | 0:8ede47d38d10 | 206 | |
| phungductung | 0:8ede47d38d10 | 207 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 208 | } |
| phungductung | 0:8ede47d38d10 | 209 | |
| phungductung | 0:8ede47d38d10 | 210 | /** |
| phungductung | 0:8ede47d38d10 | 211 | * @brief DeInitializes the CEC peripheral |
| phungductung | 0:8ede47d38d10 | 212 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 213 | * @retval HAL status |
| phungductung | 0:8ede47d38d10 | 214 | */ |
| phungductung | 0:8ede47d38d10 | 215 | HAL_StatusTypeDef HAL_CEC_DeInit(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 216 | { |
| phungductung | 0:8ede47d38d10 | 217 | /* Check the CEC handle allocation */ |
| phungductung | 0:8ede47d38d10 | 218 | if(hcec == NULL) |
| phungductung | 0:8ede47d38d10 | 219 | { |
| phungductung | 0:8ede47d38d10 | 220 | return HAL_ERROR; |
| phungductung | 0:8ede47d38d10 | 221 | } |
| phungductung | 0:8ede47d38d10 | 222 | |
| phungductung | 0:8ede47d38d10 | 223 | /* Check the parameters */ |
| phungductung | 0:8ede47d38d10 | 224 | assert_param(IS_CEC_ALL_INSTANCE(hcec->Instance)); |
| phungductung | 0:8ede47d38d10 | 225 | |
| phungductung | 0:8ede47d38d10 | 226 | hcec->State = HAL_CEC_STATE_BUSY; |
| phungductung | 0:8ede47d38d10 | 227 | |
| phungductung | 0:8ede47d38d10 | 228 | /* DeInit the low level hardware */ |
| phungductung | 0:8ede47d38d10 | 229 | HAL_CEC_MspDeInit(hcec); |
| phungductung | 0:8ede47d38d10 | 230 | /* Disable the Peripheral */ |
| phungductung | 0:8ede47d38d10 | 231 | __HAL_CEC_DISABLE(hcec); |
| phungductung | 0:8ede47d38d10 | 232 | |
| phungductung | 0:8ede47d38d10 | 233 | hcec->ErrorCode = HAL_CEC_ERROR_NONE; |
| phungductung | 0:8ede47d38d10 | 234 | hcec->State = HAL_CEC_STATE_RESET; |
| phungductung | 0:8ede47d38d10 | 235 | |
| phungductung | 0:8ede47d38d10 | 236 | /* Process Unlock */ |
| phungductung | 0:8ede47d38d10 | 237 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 238 | |
| phungductung | 0:8ede47d38d10 | 239 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 240 | } |
| phungductung | 0:8ede47d38d10 | 241 | |
| phungductung | 0:8ede47d38d10 | 242 | /** |
| phungductung | 0:8ede47d38d10 | 243 | * @brief CEC MSP Init |
| phungductung | 0:8ede47d38d10 | 244 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 245 | * @retval None |
| phungductung | 0:8ede47d38d10 | 246 | */ |
| phungductung | 0:8ede47d38d10 | 247 | __weak void HAL_CEC_MspInit(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 248 | { |
| phungductung | 0:8ede47d38d10 | 249 | /* Prevent unused argument(s) compilation warning */ |
| phungductung | 0:8ede47d38d10 | 250 | UNUSED(hcec); |
| phungductung | 0:8ede47d38d10 | 251 | /* NOTE : This function should not be modified, when the callback is needed, |
| phungductung | 0:8ede47d38d10 | 252 | the HAL_CEC_MspInit can be implemented in the user file |
| phungductung | 0:8ede47d38d10 | 253 | */ |
| phungductung | 0:8ede47d38d10 | 254 | } |
| phungductung | 0:8ede47d38d10 | 255 | |
| phungductung | 0:8ede47d38d10 | 256 | /** |
| phungductung | 0:8ede47d38d10 | 257 | * @brief CEC MSP DeInit |
| phungductung | 0:8ede47d38d10 | 258 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 259 | * @retval None |
| phungductung | 0:8ede47d38d10 | 260 | */ |
| phungductung | 0:8ede47d38d10 | 261 | __weak void HAL_CEC_MspDeInit(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 262 | { |
| phungductung | 0:8ede47d38d10 | 263 | /* Prevent unused argument(s) compilation warning */ |
| phungductung | 0:8ede47d38d10 | 264 | UNUSED(hcec); |
| phungductung | 0:8ede47d38d10 | 265 | /* NOTE : This function should not be modified, when the callback is needed, |
| phungductung | 0:8ede47d38d10 | 266 | the HAL_CEC_MspDeInit can be implemented in the user file |
| phungductung | 0:8ede47d38d10 | 267 | */ |
| phungductung | 0:8ede47d38d10 | 268 | } |
| phungductung | 0:8ede47d38d10 | 269 | |
| phungductung | 0:8ede47d38d10 | 270 | /** |
| phungductung | 0:8ede47d38d10 | 271 | * @} |
| phungductung | 0:8ede47d38d10 | 272 | */ |
| phungductung | 0:8ede47d38d10 | 273 | |
| phungductung | 0:8ede47d38d10 | 274 | /** @defgroup CEC_Exported_Functions_Group2 Input and Output operation functions |
| phungductung | 0:8ede47d38d10 | 275 | * @brief CEC Transmit/Receive functions |
| phungductung | 0:8ede47d38d10 | 276 | * |
| phungductung | 0:8ede47d38d10 | 277 | @verbatim |
| phungductung | 0:8ede47d38d10 | 278 | =============================================================================== |
| phungductung | 0:8ede47d38d10 | 279 | ##### IO operation functions ##### |
| phungductung | 0:8ede47d38d10 | 280 | =============================================================================== |
| phungductung | 0:8ede47d38d10 | 281 | This subsection provides a set of functions allowing to manage the CEC data transfers. |
| phungductung | 0:8ede47d38d10 | 282 | |
| phungductung | 0:8ede47d38d10 | 283 | (#) The CEC handle must contain the initiator (TX side) and the destination (RX side) |
| phungductung | 0:8ede47d38d10 | 284 | logical addresses (4-bit long addresses, 0xF for broadcast messages destination) |
| phungductung | 0:8ede47d38d10 | 285 | |
| phungductung | 0:8ede47d38d10 | 286 | (#) There are two mode of transfer: |
| phungductung | 0:8ede47d38d10 | 287 | (+) Blocking mode: The communication is performed in polling mode. |
| phungductung | 0:8ede47d38d10 | 288 | The HAL status of all data processing is returned by the same function |
| phungductung | 0:8ede47d38d10 | 289 | after finishing transfer. |
| phungductung | 0:8ede47d38d10 | 290 | (+) No-Blocking mode: The communication is performed using Interrupts. |
| phungductung | 0:8ede47d38d10 | 291 | These API's return the HAL status. |
| phungductung | 0:8ede47d38d10 | 292 | The end of the data processing will be indicated through the |
| phungductung | 0:8ede47d38d10 | 293 | dedicated CEC IRQ when using Interrupt mode. |
| phungductung | 0:8ede47d38d10 | 294 | The HAL_CEC_TxCpltCallback(), HAL_CEC_RxCpltCallback() user callbacks |
| phungductung | 0:8ede47d38d10 | 295 | will be executed respectively at the end of the transmit or Receive process |
| phungductung | 0:8ede47d38d10 | 296 | The HAL_CEC_ErrorCallback()user callback will be executed when a communication |
| phungductung | 0:8ede47d38d10 | 297 | error is detected |
| phungductung | 0:8ede47d38d10 | 298 | |
| phungductung | 0:8ede47d38d10 | 299 | (#) Blocking mode API's are : |
| phungductung | 0:8ede47d38d10 | 300 | (+) HAL_CEC_Transmit() |
| phungductung | 0:8ede47d38d10 | 301 | (+) HAL_CEC_Receive() |
| phungductung | 0:8ede47d38d10 | 302 | |
| phungductung | 0:8ede47d38d10 | 303 | (#) Non-Blocking mode API's with Interrupt are : |
| phungductung | 0:8ede47d38d10 | 304 | (+) HAL_CEC_Transmit_IT() |
| phungductung | 0:8ede47d38d10 | 305 | (+) HAL_CEC_Receive_IT() |
| phungductung | 0:8ede47d38d10 | 306 | (+) HAL_CEC_IRQHandler() |
| phungductung | 0:8ede47d38d10 | 307 | |
| phungductung | 0:8ede47d38d10 | 308 | (#) A set of Transfer Complete Callbacks are provided in No_Blocking mode: |
| phungductung | 0:8ede47d38d10 | 309 | (+) HAL_CEC_TxCpltCallback() |
| phungductung | 0:8ede47d38d10 | 310 | (+) HAL_CEC_RxCpltCallback() |
| phungductung | 0:8ede47d38d10 | 311 | (+) HAL_CEC_ErrorCallback() |
| phungductung | 0:8ede47d38d10 | 312 | |
| phungductung | 0:8ede47d38d10 | 313 | @endverbatim |
| phungductung | 0:8ede47d38d10 | 314 | * @{ |
| phungductung | 0:8ede47d38d10 | 315 | */ |
| phungductung | 0:8ede47d38d10 | 316 | |
| phungductung | 0:8ede47d38d10 | 317 | /** |
| phungductung | 0:8ede47d38d10 | 318 | * @brief Send data in blocking mode |
| phungductung | 0:8ede47d38d10 | 319 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 320 | * @param DestinationAddress: destination logical address |
| phungductung | 0:8ede47d38d10 | 321 | * @param pData: pointer to input byte data buffer |
| phungductung | 0:8ede47d38d10 | 322 | * @param Size: amount of data to be sent in bytes (without counting the header). |
| phungductung | 0:8ede47d38d10 | 323 | * 0 means only the header is sent (ping operation). |
| phungductung | 0:8ede47d38d10 | 324 | * Maximum TX size is 15 bytes (1 opcode and up to 14 operands). |
| phungductung | 0:8ede47d38d10 | 325 | * @param Timeout: Timeout duration. |
| phungductung | 0:8ede47d38d10 | 326 | * @retval HAL status |
| phungductung | 0:8ede47d38d10 | 327 | */ |
| phungductung | 0:8ede47d38d10 | 328 | HAL_StatusTypeDef HAL_CEC_Transmit(CEC_HandleTypeDef *hcec, uint8_t DestinationAddress, uint8_t *pData, uint32_t Size, uint32_t Timeout) |
| phungductung | 0:8ede47d38d10 | 329 | { |
| phungductung | 0:8ede47d38d10 | 330 | uint8_t temp = 0; |
| phungductung | 0:8ede47d38d10 | 331 | uint32_t tempisr = 0; |
| phungductung | 0:8ede47d38d10 | 332 | uint32_t tickstart = 0; |
| phungductung | 0:8ede47d38d10 | 333 | |
| phungductung | 0:8ede47d38d10 | 334 | if((hcec->State == HAL_CEC_STATE_READY) && (__HAL_CEC_GET_TRANSMISSION_START_FLAG(hcec) == RESET)) |
| phungductung | 0:8ede47d38d10 | 335 | { |
| phungductung | 0:8ede47d38d10 | 336 | hcec->ErrorCode = HAL_CEC_ERROR_NONE; |
| phungductung | 0:8ede47d38d10 | 337 | if((pData == NULL ) && (Size > 0)) |
| phungductung | 0:8ede47d38d10 | 338 | { |
| phungductung | 0:8ede47d38d10 | 339 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 340 | return HAL_ERROR; |
| phungductung | 0:8ede47d38d10 | 341 | } |
| phungductung | 0:8ede47d38d10 | 342 | |
| phungductung | 0:8ede47d38d10 | 343 | assert_param(IS_CEC_ADDRESS(DestinationAddress)); |
| phungductung | 0:8ede47d38d10 | 344 | assert_param(IS_CEC_MSGSIZE(Size)); |
| phungductung | 0:8ede47d38d10 | 345 | |
| phungductung | 0:8ede47d38d10 | 346 | /* Process Locked */ |
| phungductung | 0:8ede47d38d10 | 347 | __HAL_LOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 348 | |
| phungductung | 0:8ede47d38d10 | 349 | hcec->State = HAL_CEC_STATE_BUSY_TX; |
| phungductung | 0:8ede47d38d10 | 350 | |
| phungductung | 0:8ede47d38d10 | 351 | hcec->TxXferCount = Size; |
| phungductung | 0:8ede47d38d10 | 352 | |
| phungductung | 0:8ede47d38d10 | 353 | /* case no data to be sent, sender is only pinging the system */ |
| phungductung | 0:8ede47d38d10 | 354 | if (Size == 0) |
| phungductung | 0:8ede47d38d10 | 355 | { |
| phungductung | 0:8ede47d38d10 | 356 | /* Set TX End of Message (TXEOM) bit, must be set before writing data to TXDR */ |
| phungductung | 0:8ede47d38d10 | 357 | __HAL_CEC_LAST_BYTE_TX_SET(hcec); |
| phungductung | 0:8ede47d38d10 | 358 | } |
| phungductung | 0:8ede47d38d10 | 359 | |
| phungductung | 0:8ede47d38d10 | 360 | /* send header block */ |
| phungductung | 0:8ede47d38d10 | 361 | temp = ((uint32_t)hcec->Init.InitiatorAddress << CEC_INITIATOR_LSB_POS) | DestinationAddress; |
| phungductung | 0:8ede47d38d10 | 362 | hcec->Instance->TXDR = temp; |
| phungductung | 0:8ede47d38d10 | 363 | /* Set TX Start of Message (TXSOM) bit */ |
| phungductung | 0:8ede47d38d10 | 364 | __HAL_CEC_FIRST_BYTE_TX_SET(hcec); |
| phungductung | 0:8ede47d38d10 | 365 | |
| phungductung | 0:8ede47d38d10 | 366 | while (hcec->TxXferCount > 0) |
| phungductung | 0:8ede47d38d10 | 367 | { |
| phungductung | 0:8ede47d38d10 | 368 | hcec->TxXferCount--; |
| phungductung | 0:8ede47d38d10 | 369 | |
| phungductung | 0:8ede47d38d10 | 370 | tickstart = HAL_GetTick(); |
| phungductung | 0:8ede47d38d10 | 371 | while(HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_FLAG_TXBR)) |
| phungductung | 0:8ede47d38d10 | 372 | { |
| phungductung | 0:8ede47d38d10 | 373 | if(Timeout != HAL_MAX_DELAY) |
| phungductung | 0:8ede47d38d10 | 374 | { |
| phungductung | 0:8ede47d38d10 | 375 | if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout)) |
| phungductung | 0:8ede47d38d10 | 376 | { |
| phungductung | 0:8ede47d38d10 | 377 | hcec->State = HAL_CEC_STATE_TIMEOUT; |
| phungductung | 0:8ede47d38d10 | 378 | /* Process Unlocked */ |
| phungductung | 0:8ede47d38d10 | 379 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 380 | return HAL_TIMEOUT; |
| phungductung | 0:8ede47d38d10 | 381 | } |
| phungductung | 0:8ede47d38d10 | 382 | } |
| phungductung | 0:8ede47d38d10 | 383 | |
| phungductung | 0:8ede47d38d10 | 384 | /* check whether error occurred while waiting for TXBR to be set: |
| phungductung | 0:8ede47d38d10 | 385 | * has Tx underrun occurred ? |
| phungductung | 0:8ede47d38d10 | 386 | * has Tx error occurred ? |
| phungductung | 0:8ede47d38d10 | 387 | * has Tx Missing Acknowledge error occurred ? |
| phungductung | 0:8ede47d38d10 | 388 | * has Arbitration Loss error occurred ? */ |
| phungductung | 0:8ede47d38d10 | 389 | tempisr = hcec->Instance->ISR; |
| phungductung | 0:8ede47d38d10 | 390 | if ((tempisr & (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE|CEC_FLAG_ARBLST)) != 0) |
| phungductung | 0:8ede47d38d10 | 391 | { |
| phungductung | 0:8ede47d38d10 | 392 | /* copy ISR for error handling purposes */ |
| phungductung | 0:8ede47d38d10 | 393 | hcec->ErrorCode = tempisr; |
| phungductung | 0:8ede47d38d10 | 394 | /* clear all error flags by default */ |
| phungductung | 0:8ede47d38d10 | 395 | __HAL_CEC_CLEAR_FLAG(hcec, (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE|CEC_FLAG_ARBLST)); |
| phungductung | 0:8ede47d38d10 | 396 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 397 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 398 | return HAL_ERROR; |
| phungductung | 0:8ede47d38d10 | 399 | } |
| phungductung | 0:8ede47d38d10 | 400 | } |
| phungductung | 0:8ede47d38d10 | 401 | /* TXBR to clear BEFORE writing TXDR register */ |
| phungductung | 0:8ede47d38d10 | 402 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXBR); |
| phungductung | 0:8ede47d38d10 | 403 | if (hcec->TxXferCount == 0) |
| phungductung | 0:8ede47d38d10 | 404 | { |
| phungductung | 0:8ede47d38d10 | 405 | /* if last byte transmission, set TX End of Message (TXEOM) bit */ |
| phungductung | 0:8ede47d38d10 | 406 | __HAL_CEC_LAST_BYTE_TX_SET(hcec); |
| phungductung | 0:8ede47d38d10 | 407 | } |
| phungductung | 0:8ede47d38d10 | 408 | hcec->Instance->TXDR = *pData++; |
| phungductung | 0:8ede47d38d10 | 409 | |
| phungductung | 0:8ede47d38d10 | 410 | /* error check after TX byte write up */ |
| phungductung | 0:8ede47d38d10 | 411 | tempisr = hcec->Instance->ISR; |
| phungductung | 0:8ede47d38d10 | 412 | if ((tempisr & (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE|CEC_FLAG_ARBLST)) != 0) |
| phungductung | 0:8ede47d38d10 | 413 | { |
| phungductung | 0:8ede47d38d10 | 414 | /* copy ISR for error handling purposes */ |
| phungductung | 0:8ede47d38d10 | 415 | hcec->ErrorCode = tempisr; |
| phungductung | 0:8ede47d38d10 | 416 | /* clear all error flags by default */ |
| phungductung | 0:8ede47d38d10 | 417 | __HAL_CEC_CLEAR_FLAG(hcec, (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE|CEC_FLAG_ARBLST)); |
| phungductung | 0:8ede47d38d10 | 418 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 419 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 420 | return HAL_ERROR; |
| phungductung | 0:8ede47d38d10 | 421 | } |
| phungductung | 0:8ede47d38d10 | 422 | } /* end while (while (hcec->TxXferCount > 0)) */ |
| phungductung | 0:8ede47d38d10 | 423 | |
| phungductung | 0:8ede47d38d10 | 424 | |
| phungductung | 0:8ede47d38d10 | 425 | /* if no error up to this point, check that transmission is |
| phungductung | 0:8ede47d38d10 | 426 | * complete, that is wait until TXEOM is reset */ |
| phungductung | 0:8ede47d38d10 | 427 | tickstart = HAL_GetTick(); |
| phungductung | 0:8ede47d38d10 | 428 | |
| phungductung | 0:8ede47d38d10 | 429 | while (HAL_IS_BIT_SET(hcec->Instance->CR, CEC_CR_TXEOM)) |
| phungductung | 0:8ede47d38d10 | 430 | { |
| phungductung | 0:8ede47d38d10 | 431 | if(Timeout != HAL_MAX_DELAY) |
| phungductung | 0:8ede47d38d10 | 432 | { |
| phungductung | 0:8ede47d38d10 | 433 | if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout)) |
| phungductung | 0:8ede47d38d10 | 434 | { |
| phungductung | 0:8ede47d38d10 | 435 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 436 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 437 | return HAL_TIMEOUT; |
| phungductung | 0:8ede47d38d10 | 438 | } |
| phungductung | 0:8ede47d38d10 | 439 | } |
| phungductung | 0:8ede47d38d10 | 440 | } |
| phungductung | 0:8ede47d38d10 | 441 | |
| phungductung | 0:8ede47d38d10 | 442 | /* Final error check once all bytes have been transmitted */ |
| phungductung | 0:8ede47d38d10 | 443 | tempisr = hcec->Instance->ISR; |
| phungductung | 0:8ede47d38d10 | 444 | if ((tempisr & (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE)) != 0) |
| phungductung | 0:8ede47d38d10 | 445 | { |
| phungductung | 0:8ede47d38d10 | 446 | /* copy ISR for error handling purposes */ |
| phungductung | 0:8ede47d38d10 | 447 | hcec->ErrorCode = tempisr; |
| phungductung | 0:8ede47d38d10 | 448 | /* clear all error flags by default */ |
| phungductung | 0:8ede47d38d10 | 449 | __HAL_CEC_CLEAR_FLAG(hcec, (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE)); |
| phungductung | 0:8ede47d38d10 | 450 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 451 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 452 | return HAL_ERROR; |
| phungductung | 0:8ede47d38d10 | 453 | } |
| phungductung | 0:8ede47d38d10 | 454 | |
| phungductung | 0:8ede47d38d10 | 455 | hcec->State = HAL_CEC_STATE_READY; |
| phungductung | 0:8ede47d38d10 | 456 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 457 | |
| phungductung | 0:8ede47d38d10 | 458 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 459 | } |
| phungductung | 0:8ede47d38d10 | 460 | else |
| phungductung | 0:8ede47d38d10 | 461 | { |
| phungductung | 0:8ede47d38d10 | 462 | return HAL_BUSY; |
| phungductung | 0:8ede47d38d10 | 463 | } |
| phungductung | 0:8ede47d38d10 | 464 | } |
| phungductung | 0:8ede47d38d10 | 465 | |
| phungductung | 0:8ede47d38d10 | 466 | /** |
| phungductung | 0:8ede47d38d10 | 467 | * @brief Receive data in blocking mode. Must be invoked when RXBR has been set. |
| phungductung | 0:8ede47d38d10 | 468 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 469 | * @param pData: pointer to received data buffer. |
| phungductung | 0:8ede47d38d10 | 470 | * @param Timeout: Timeout duration. |
| phungductung | 0:8ede47d38d10 | 471 | * Note that the received data size is not known beforehand, the latter is known |
| phungductung | 0:8ede47d38d10 | 472 | * when the reception is complete and is stored in hcec->RxXferSize. |
| phungductung | 0:8ede47d38d10 | 473 | * hcec->RxXferSize is the sum of opcodes + operands (0 to 14 operands max). |
| phungductung | 0:8ede47d38d10 | 474 | * If only a header is received, hcec->RxXferSize = 0 |
| phungductung | 0:8ede47d38d10 | 475 | * @retval HAL status |
| phungductung | 0:8ede47d38d10 | 476 | */ |
| phungductung | 0:8ede47d38d10 | 477 | HAL_StatusTypeDef HAL_CEC_Receive(CEC_HandleTypeDef *hcec, uint8_t *pData, uint32_t Timeout) |
| phungductung | 0:8ede47d38d10 | 478 | { |
| phungductung | 0:8ede47d38d10 | 479 | uint32_t temp; |
| phungductung | 0:8ede47d38d10 | 480 | uint32_t tickstart = 0; |
| phungductung | 0:8ede47d38d10 | 481 | |
| phungductung | 0:8ede47d38d10 | 482 | if (hcec->State == HAL_CEC_STATE_READY) |
| phungductung | 0:8ede47d38d10 | 483 | { |
| phungductung | 0:8ede47d38d10 | 484 | hcec->ErrorCode = HAL_CEC_ERROR_NONE; |
| phungductung | 0:8ede47d38d10 | 485 | if (pData == NULL ) |
| phungductung | 0:8ede47d38d10 | 486 | { |
| phungductung | 0:8ede47d38d10 | 487 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 488 | return HAL_ERROR; |
| phungductung | 0:8ede47d38d10 | 489 | } |
| phungductung | 0:8ede47d38d10 | 490 | |
| phungductung | 0:8ede47d38d10 | 491 | hcec->RxXferSize = 0; |
| phungductung | 0:8ede47d38d10 | 492 | /* Process Locked */ |
| phungductung | 0:8ede47d38d10 | 493 | __HAL_LOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 494 | |
| phungductung | 0:8ede47d38d10 | 495 | |
| phungductung | 0:8ede47d38d10 | 496 | /* Rx loop until CEC_ISR_RXEND is set */ |
| phungductung | 0:8ede47d38d10 | 497 | while (HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_FLAG_RXEND)) |
| phungductung | 0:8ede47d38d10 | 498 | { |
| phungductung | 0:8ede47d38d10 | 499 | tickstart = HAL_GetTick(); |
| phungductung | 0:8ede47d38d10 | 500 | /* Wait for next byte to be received */ |
| phungductung | 0:8ede47d38d10 | 501 | while (HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_FLAG_RXBR)) |
| phungductung | 0:8ede47d38d10 | 502 | { |
| phungductung | 0:8ede47d38d10 | 503 | if(Timeout != HAL_MAX_DELAY) |
| phungductung | 0:8ede47d38d10 | 504 | { |
| phungductung | 0:8ede47d38d10 | 505 | if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout)) |
| phungductung | 0:8ede47d38d10 | 506 | { |
| phungductung | 0:8ede47d38d10 | 507 | hcec->State = HAL_CEC_STATE_TIMEOUT; |
| phungductung | 0:8ede47d38d10 | 508 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 509 | return HAL_TIMEOUT; |
| phungductung | 0:8ede47d38d10 | 510 | } |
| phungductung | 0:8ede47d38d10 | 511 | } |
| phungductung | 0:8ede47d38d10 | 512 | /* any error so far ? |
| phungductung | 0:8ede47d38d10 | 513 | * has Rx Missing Acknowledge occurred ? |
| phungductung | 0:8ede47d38d10 | 514 | * has Rx Long Bit Period error occurred ? |
| phungductung | 0:8ede47d38d10 | 515 | * has Rx Short Bit Period error occurred ? |
| phungductung | 0:8ede47d38d10 | 516 | * has Rx Bit Rising error occurred ? |
| phungductung | 0:8ede47d38d10 | 517 | * has Rx Overrun error occurred ? */ |
| phungductung | 0:8ede47d38d10 | 518 | temp = (uint32_t) (hcec->Instance->ISR); |
| phungductung | 0:8ede47d38d10 | 519 | if ((temp & (CEC_FLAG_RXACKE|CEC_FLAG_LBPE|CEC_FLAG_SBPE|CEC_FLAG_BRE|CEC_FLAG_RXOVR)) != 0) |
| phungductung | 0:8ede47d38d10 | 520 | { |
| phungductung | 0:8ede47d38d10 | 521 | /* copy ISR for error handling purposes */ |
| phungductung | 0:8ede47d38d10 | 522 | hcec->ErrorCode = temp; |
| phungductung | 0:8ede47d38d10 | 523 | /* clear all error flags by default */ |
| phungductung | 0:8ede47d38d10 | 524 | __HAL_CEC_CLEAR_FLAG(hcec,(CEC_FLAG_RXACKE|CEC_FLAG_LBPE|CEC_FLAG_SBPE|CEC_FLAG_BRE|CEC_FLAG_RXOVR)); |
| phungductung | 0:8ede47d38d10 | 525 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 526 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 527 | return HAL_ERROR; |
| phungductung | 0:8ede47d38d10 | 528 | } |
| phungductung | 0:8ede47d38d10 | 529 | } /* while (HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_ISR_RXBR)) */ |
| phungductung | 0:8ede47d38d10 | 530 | |
| phungductung | 0:8ede47d38d10 | 531 | |
| phungductung | 0:8ede47d38d10 | 532 | /* read received data */ |
| phungductung | 0:8ede47d38d10 | 533 | *pData++ = hcec->Instance->RXDR; |
| phungductung | 0:8ede47d38d10 | 534 | temp = (uint32_t) (hcec->Instance->ISR); |
| phungductung | 0:8ede47d38d10 | 535 | /* end of message ? */ |
| phungductung | 0:8ede47d38d10 | 536 | if ((temp & CEC_ISR_RXEND) != 0) |
| phungductung | 0:8ede47d38d10 | 537 | { |
| phungductung | 0:8ede47d38d10 | 538 | assert_param(IS_CEC_MSGSIZE(hcec->RxXferSize)); |
| phungductung | 0:8ede47d38d10 | 539 | __HAL_CEC_CLEAR_FLAG(hcec,CEC_FLAG_RXEND); |
| phungductung | 0:8ede47d38d10 | 540 | hcec->State = HAL_CEC_STATE_READY; |
| phungductung | 0:8ede47d38d10 | 541 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 542 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 543 | } |
| phungductung | 0:8ede47d38d10 | 544 | |
| phungductung | 0:8ede47d38d10 | 545 | /* clear Rx-Byte Received flag */ |
| phungductung | 0:8ede47d38d10 | 546 | __HAL_CEC_CLEAR_FLAG(hcec,CEC_FLAG_RXBR); |
| phungductung | 0:8ede47d38d10 | 547 | /* increment payload byte counter */ |
| phungductung | 0:8ede47d38d10 | 548 | hcec->RxXferSize++; |
| phungductung | 0:8ede47d38d10 | 549 | } /* while (HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_ISR_RXEND)) */ |
| phungductung | 0:8ede47d38d10 | 550 | |
| phungductung | 0:8ede47d38d10 | 551 | /* if the instructions below are executed, it means RXEND was set when RXBR was |
| phungductung | 0:8ede47d38d10 | 552 | * set for the first time: |
| phungductung | 0:8ede47d38d10 | 553 | * the code within the "while (HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_ISR_RXEND))" |
| phungductung | 0:8ede47d38d10 | 554 | * loop has not been executed and this means a single byte has been sent */ |
| phungductung | 0:8ede47d38d10 | 555 | *pData++ = hcec->Instance->RXDR; |
| phungductung | 0:8ede47d38d10 | 556 | /* only one header is received: RxXferSize is set to 0 (no operand, no opcode) */ |
| phungductung | 0:8ede47d38d10 | 557 | hcec->RxXferSize = 0; |
| phungductung | 0:8ede47d38d10 | 558 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXEND); |
| phungductung | 0:8ede47d38d10 | 559 | |
| phungductung | 0:8ede47d38d10 | 560 | hcec->State = HAL_CEC_STATE_READY; |
| phungductung | 0:8ede47d38d10 | 561 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 562 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 563 | } |
| phungductung | 0:8ede47d38d10 | 564 | else |
| phungductung | 0:8ede47d38d10 | 565 | { |
| phungductung | 0:8ede47d38d10 | 566 | return HAL_BUSY; |
| phungductung | 0:8ede47d38d10 | 567 | } |
| phungductung | 0:8ede47d38d10 | 568 | } |
| phungductung | 0:8ede47d38d10 | 569 | |
| phungductung | 0:8ede47d38d10 | 570 | /** |
| phungductung | 0:8ede47d38d10 | 571 | * @brief Send data in interrupt mode |
| phungductung | 0:8ede47d38d10 | 572 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 573 | * @param DestinationAddress: destination logical address |
| phungductung | 0:8ede47d38d10 | 574 | * @param pData: pointer to input byte data buffer |
| phungductung | 0:8ede47d38d10 | 575 | * @param Size: amount of data to be sent in bytes (without counting the header). |
| phungductung | 0:8ede47d38d10 | 576 | * 0 means only the header is sent (ping operation). |
| phungductung | 0:8ede47d38d10 | 577 | * Maximum TX size is 15 bytes (1 opcode and up to 14 operands). |
| phungductung | 0:8ede47d38d10 | 578 | * @retval HAL status |
| phungductung | 0:8ede47d38d10 | 579 | */ |
| phungductung | 0:8ede47d38d10 | 580 | HAL_StatusTypeDef HAL_CEC_Transmit_IT(CEC_HandleTypeDef *hcec, uint8_t DestinationAddress, uint8_t *pData, uint32_t Size) |
| phungductung | 0:8ede47d38d10 | 581 | { |
| phungductung | 0:8ede47d38d10 | 582 | uint8_t temp = 0; |
| phungductung | 0:8ede47d38d10 | 583 | /* if the IP isn't already busy and if there is no previous transmission |
| phungductung | 0:8ede47d38d10 | 584 | already pending due to arbitration lost */ |
| phungductung | 0:8ede47d38d10 | 585 | if (((hcec->State == HAL_CEC_STATE_READY) || (hcec->State == HAL_CEC_STATE_STANDBY_RX)) |
| phungductung | 0:8ede47d38d10 | 586 | && (__HAL_CEC_GET_TRANSMISSION_START_FLAG(hcec) == RESET)) |
| phungductung | 0:8ede47d38d10 | 587 | { |
| phungductung | 0:8ede47d38d10 | 588 | if((pData == NULL ) && (Size > 0)) |
| phungductung | 0:8ede47d38d10 | 589 | { |
| phungductung | 0:8ede47d38d10 | 590 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 591 | return HAL_ERROR; |
| phungductung | 0:8ede47d38d10 | 592 | } |
| phungductung | 0:8ede47d38d10 | 593 | |
| phungductung | 0:8ede47d38d10 | 594 | assert_param(IS_CEC_ADDRESS(DestinationAddress)); |
| phungductung | 0:8ede47d38d10 | 595 | assert_param(IS_CEC_MSGSIZE(Size)); |
| phungductung | 0:8ede47d38d10 | 596 | |
| phungductung | 0:8ede47d38d10 | 597 | /* Process Locked */ |
| phungductung | 0:8ede47d38d10 | 598 | __HAL_LOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 599 | hcec->pTxBuffPtr = pData; |
| phungductung | 0:8ede47d38d10 | 600 | hcec->State = HAL_CEC_STATE_BUSY_TX; |
| phungductung | 0:8ede47d38d10 | 601 | hcec->ErrorCode = HAL_CEC_ERROR_NONE; |
| phungductung | 0:8ede47d38d10 | 602 | |
| phungductung | 0:8ede47d38d10 | 603 | /* Disable Peripheral to write CEC_IER register */ |
| phungductung | 0:8ede47d38d10 | 604 | __HAL_CEC_DISABLE(hcec); |
| phungductung | 0:8ede47d38d10 | 605 | |
| phungductung | 0:8ede47d38d10 | 606 | /* Enable the following two CEC Transmission interrupts as |
| phungductung | 0:8ede47d38d10 | 607 | * well as the following CEC Transmission Errors interrupts: |
| phungductung | 0:8ede47d38d10 | 608 | * Tx Byte Request IT |
| phungductung | 0:8ede47d38d10 | 609 | * End of Transmission IT |
| phungductung | 0:8ede47d38d10 | 610 | * Tx Missing Acknowledge IT |
| phungductung | 0:8ede47d38d10 | 611 | * Tx-Error IT |
| phungductung | 0:8ede47d38d10 | 612 | * Tx-Buffer Underrun IT |
| phungductung | 0:8ede47d38d10 | 613 | * Tx arbitration lost */ |
| phungductung | 0:8ede47d38d10 | 614 | __HAL_CEC_ENABLE_IT(hcec, CEC_IT_TXBR|CEC_IT_TXEND|CEC_IER_TX_ALL_ERR); |
| phungductung | 0:8ede47d38d10 | 615 | |
| phungductung | 0:8ede47d38d10 | 616 | /* Enable the Peripheral */ |
| phungductung | 0:8ede47d38d10 | 617 | __HAL_CEC_ENABLE(hcec); |
| phungductung | 0:8ede47d38d10 | 618 | |
| phungductung | 0:8ede47d38d10 | 619 | /* initialize the number of bytes to send, |
| phungductung | 0:8ede47d38d10 | 620 | * 0 means only one header is sent (ping operation) */ |
| phungductung | 0:8ede47d38d10 | 621 | hcec->TxXferCount = Size; |
| phungductung | 0:8ede47d38d10 | 622 | |
| phungductung | 0:8ede47d38d10 | 623 | /* Process Unlocked */ |
| phungductung | 0:8ede47d38d10 | 624 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 625 | |
| phungductung | 0:8ede47d38d10 | 626 | /* in case of no payload (Size = 0), sender is only pinging the system; |
| phungductung | 0:8ede47d38d10 | 627 | * Set TX End of Message (TXEOM) bit, must be set before writing data to TXDR */ |
| phungductung | 0:8ede47d38d10 | 628 | if (Size == 0) |
| phungductung | 0:8ede47d38d10 | 629 | { |
| phungductung | 0:8ede47d38d10 | 630 | __HAL_CEC_LAST_BYTE_TX_SET(hcec); |
| phungductung | 0:8ede47d38d10 | 631 | } |
| phungductung | 0:8ede47d38d10 | 632 | |
| phungductung | 0:8ede47d38d10 | 633 | /* send header block */ |
| phungductung | 0:8ede47d38d10 | 634 | temp = ((uint32_t)hcec->Init.InitiatorAddress << CEC_INITIATOR_LSB_POS) | DestinationAddress; |
| phungductung | 0:8ede47d38d10 | 635 | hcec->Instance->TXDR = temp; |
| phungductung | 0:8ede47d38d10 | 636 | /* Set TX Start of Message (TXSOM) bit */ |
| phungductung | 0:8ede47d38d10 | 637 | __HAL_CEC_FIRST_BYTE_TX_SET(hcec); |
| phungductung | 0:8ede47d38d10 | 638 | |
| phungductung | 0:8ede47d38d10 | 639 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 640 | } |
| phungductung | 0:8ede47d38d10 | 641 | /* if the IP is already busy or if there is a previous transmission |
| phungductung | 0:8ede47d38d10 | 642 | already pending due to arbitration loss */ |
| phungductung | 0:8ede47d38d10 | 643 | else if ((hcec->State == HAL_CEC_STATE_BUSY_TX) |
| phungductung | 0:8ede47d38d10 | 644 | || (__HAL_CEC_GET_TRANSMISSION_START_FLAG(hcec) != RESET)) |
| phungductung | 0:8ede47d38d10 | 645 | { |
| phungductung | 0:8ede47d38d10 | 646 | __HAL_LOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 647 | /* set state to BUSY TX, in case it wasn't set already (case |
| phungductung | 0:8ede47d38d10 | 648 | * of transmission new attempt after arbitration loss) */ |
| phungductung | 0:8ede47d38d10 | 649 | if (hcec->State != HAL_CEC_STATE_BUSY_TX) |
| phungductung | 0:8ede47d38d10 | 650 | { |
| phungductung | 0:8ede47d38d10 | 651 | hcec->State = HAL_CEC_STATE_BUSY_TX; |
| phungductung | 0:8ede47d38d10 | 652 | } |
| phungductung | 0:8ede47d38d10 | 653 | |
| phungductung | 0:8ede47d38d10 | 654 | /* if all data have been sent */ |
| phungductung | 0:8ede47d38d10 | 655 | if(hcec->TxXferCount == 0) |
| phungductung | 0:8ede47d38d10 | 656 | { |
| phungductung | 0:8ede47d38d10 | 657 | /* Disable Peripheral to write CEC_IER register */ |
| phungductung | 0:8ede47d38d10 | 658 | __HAL_CEC_DISABLE(hcec); |
| phungductung | 0:8ede47d38d10 | 659 | |
| phungductung | 0:8ede47d38d10 | 660 | /* Disable the CEC Transmission Interrupts */ |
| phungductung | 0:8ede47d38d10 | 661 | __HAL_CEC_DISABLE_IT(hcec, CEC_IT_TXBR|CEC_IT_TXEND); |
| phungductung | 0:8ede47d38d10 | 662 | /* Disable the CEC Transmission Error Interrupts */ |
| phungductung | 0:8ede47d38d10 | 663 | __HAL_CEC_DISABLE_IT(hcec, CEC_IER_TX_ALL_ERR); |
| phungductung | 0:8ede47d38d10 | 664 | |
| phungductung | 0:8ede47d38d10 | 665 | /* Enable the Peripheral */ |
| phungductung | 0:8ede47d38d10 | 666 | __HAL_CEC_ENABLE(hcec); |
| phungductung | 0:8ede47d38d10 | 667 | |
| phungductung | 0:8ede47d38d10 | 668 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXBR|CEC_FLAG_TXEND); |
| phungductung | 0:8ede47d38d10 | 669 | |
| phungductung | 0:8ede47d38d10 | 670 | hcec->State = HAL_CEC_STATE_READY; |
| phungductung | 0:8ede47d38d10 | 671 | /* Call the Process Unlocked before calling the Tx call back API to give the possibility to |
| phungductung | 0:8ede47d38d10 | 672 | start again the Transmission under the Tx call back API */ |
| phungductung | 0:8ede47d38d10 | 673 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 674 | |
| phungductung | 0:8ede47d38d10 | 675 | HAL_CEC_TxCpltCallback(hcec); |
| phungductung | 0:8ede47d38d10 | 676 | |
| phungductung | 0:8ede47d38d10 | 677 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 678 | } |
| phungductung | 0:8ede47d38d10 | 679 | else |
| phungductung | 0:8ede47d38d10 | 680 | { |
| phungductung | 0:8ede47d38d10 | 681 | if (hcec->TxXferCount == 1) |
| phungductung | 0:8ede47d38d10 | 682 | { |
| phungductung | 0:8ede47d38d10 | 683 | /* if this is the last byte transmission, set TX End of Message (TXEOM) bit */ |
| phungductung | 0:8ede47d38d10 | 684 | __HAL_CEC_LAST_BYTE_TX_SET(hcec); |
| phungductung | 0:8ede47d38d10 | 685 | } |
| phungductung | 0:8ede47d38d10 | 686 | /* clear Tx-Byte request flag */ |
| phungductung | 0:8ede47d38d10 | 687 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXBR); |
| phungductung | 0:8ede47d38d10 | 688 | hcec->Instance->TXDR = *hcec->pTxBuffPtr++; |
| phungductung | 0:8ede47d38d10 | 689 | hcec->TxXferCount--; |
| phungductung | 0:8ede47d38d10 | 690 | |
| phungductung | 0:8ede47d38d10 | 691 | /* Process Unlocked */ |
| phungductung | 0:8ede47d38d10 | 692 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 693 | |
| phungductung | 0:8ede47d38d10 | 694 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 695 | } |
| phungductung | 0:8ede47d38d10 | 696 | } |
| phungductung | 0:8ede47d38d10 | 697 | else |
| phungductung | 0:8ede47d38d10 | 698 | { |
| phungductung | 0:8ede47d38d10 | 699 | return HAL_BUSY; |
| phungductung | 0:8ede47d38d10 | 700 | } |
| phungductung | 0:8ede47d38d10 | 701 | } |
| phungductung | 0:8ede47d38d10 | 702 | |
| phungductung | 0:8ede47d38d10 | 703 | /** |
| phungductung | 0:8ede47d38d10 | 704 | * @brief Receive data in interrupt mode. |
| phungductung | 0:8ede47d38d10 | 705 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 706 | * @param pData: pointer to received data buffer. |
| phungductung | 0:8ede47d38d10 | 707 | * Note that the received data size is not known beforehand, the latter is known |
| phungductung | 0:8ede47d38d10 | 708 | * when the reception is complete and is stored in hcec->RxXferSize. |
| phungductung | 0:8ede47d38d10 | 709 | * hcec->RxXferSize is the sum of opcodes + operands (0 to 14 operands max). |
| phungductung | 0:8ede47d38d10 | 710 | * If only a header is received, hcec->RxXferSize = 0 |
| phungductung | 0:8ede47d38d10 | 711 | * @retval HAL status |
| phungductung | 0:8ede47d38d10 | 712 | */ |
| phungductung | 0:8ede47d38d10 | 713 | HAL_StatusTypeDef HAL_CEC_Receive_IT(CEC_HandleTypeDef *hcec, uint8_t *pData) |
| phungductung | 0:8ede47d38d10 | 714 | { |
| phungductung | 0:8ede47d38d10 | 715 | if(hcec->State == HAL_CEC_STATE_READY) |
| phungductung | 0:8ede47d38d10 | 716 | { |
| phungductung | 0:8ede47d38d10 | 717 | if(pData == NULL ) |
| phungductung | 0:8ede47d38d10 | 718 | { |
| phungductung | 0:8ede47d38d10 | 719 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 720 | return HAL_ERROR; |
| phungductung | 0:8ede47d38d10 | 721 | } |
| phungductung | 0:8ede47d38d10 | 722 | |
| phungductung | 0:8ede47d38d10 | 723 | /* Process Locked */ |
| phungductung | 0:8ede47d38d10 | 724 | __HAL_LOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 725 | hcec->RxXferSize = 0; |
| phungductung | 0:8ede47d38d10 | 726 | hcec->pRxBuffPtr = pData; |
| phungductung | 0:8ede47d38d10 | 727 | hcec->ErrorCode = HAL_CEC_ERROR_NONE; |
| phungductung | 0:8ede47d38d10 | 728 | /* the IP is moving to a ready to receive state */ |
| phungductung | 0:8ede47d38d10 | 729 | hcec->State = HAL_CEC_STATE_STANDBY_RX; |
| phungductung | 0:8ede47d38d10 | 730 | |
| phungductung | 0:8ede47d38d10 | 731 | /* Disable Peripheral to write CEC_IER register */ |
| phungductung | 0:8ede47d38d10 | 732 | __HAL_CEC_DISABLE(hcec); |
| phungductung | 0:8ede47d38d10 | 733 | |
| phungductung | 0:8ede47d38d10 | 734 | /* Enable the following CEC Reception Error Interrupts: |
| phungductung | 0:8ede47d38d10 | 735 | * Rx overrun |
| phungductung | 0:8ede47d38d10 | 736 | * Rx bit rising error |
| phungductung | 0:8ede47d38d10 | 737 | * Rx short bit period error |
| phungductung | 0:8ede47d38d10 | 738 | * Rx long bit period error |
| phungductung | 0:8ede47d38d10 | 739 | * Rx missing acknowledge */ |
| phungductung | 0:8ede47d38d10 | 740 | __HAL_CEC_ENABLE_IT(hcec, CEC_IER_RX_ALL_ERR); |
| phungductung | 0:8ede47d38d10 | 741 | |
| phungductung | 0:8ede47d38d10 | 742 | /* Process Unlocked */ |
| phungductung | 0:8ede47d38d10 | 743 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 744 | |
| phungductung | 0:8ede47d38d10 | 745 | /* Enable the following two CEC Reception interrupts: |
| phungductung | 0:8ede47d38d10 | 746 | * Rx Byte Received IT |
| phungductung | 0:8ede47d38d10 | 747 | * End of Reception IT */ |
| phungductung | 0:8ede47d38d10 | 748 | __HAL_CEC_ENABLE_IT(hcec, CEC_IT_RXBR|CEC_IT_RXEND); |
| phungductung | 0:8ede47d38d10 | 749 | |
| phungductung | 0:8ede47d38d10 | 750 | __HAL_CEC_ENABLE(hcec); |
| phungductung | 0:8ede47d38d10 | 751 | |
| phungductung | 0:8ede47d38d10 | 752 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 753 | } |
| phungductung | 0:8ede47d38d10 | 754 | else |
| phungductung | 0:8ede47d38d10 | 755 | { |
| phungductung | 0:8ede47d38d10 | 756 | return HAL_BUSY; |
| phungductung | 0:8ede47d38d10 | 757 | } |
| phungductung | 0:8ede47d38d10 | 758 | } |
| phungductung | 0:8ede47d38d10 | 759 | |
| phungductung | 0:8ede47d38d10 | 760 | /** |
| phungductung | 0:8ede47d38d10 | 761 | * @brief Get size of the received frame. |
| phungductung | 0:8ede47d38d10 | 762 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 763 | * @retval Frame size |
| phungductung | 0:8ede47d38d10 | 764 | */ |
| phungductung | 0:8ede47d38d10 | 765 | uint32_t HAL_CEC_GetReceivedFrameSize(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 766 | { |
| phungductung | 0:8ede47d38d10 | 767 | return hcec->RxXferSize; |
| phungductung | 0:8ede47d38d10 | 768 | } |
| phungductung | 0:8ede47d38d10 | 769 | |
| phungductung | 0:8ede47d38d10 | 770 | /** |
| phungductung | 0:8ede47d38d10 | 771 | * @brief This function handles CEC interrupt requests. |
| phungductung | 0:8ede47d38d10 | 772 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 773 | * @retval None |
| phungductung | 0:8ede47d38d10 | 774 | */ |
| phungductung | 0:8ede47d38d10 | 775 | void HAL_CEC_IRQHandler(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 776 | { |
| phungductung | 0:8ede47d38d10 | 777 | /* save interrupts register for further error or interrupts handling purposes */ |
| phungductung | 0:8ede47d38d10 | 778 | hcec->ErrorCode = hcec->Instance->ISR; |
| phungductung | 0:8ede47d38d10 | 779 | /* CEC TX missing acknowledge error interrupt occurred -------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 780 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TXACKE) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_TXACKE) != RESET)) |
| phungductung | 0:8ede47d38d10 | 781 | { |
| phungductung | 0:8ede47d38d10 | 782 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXACKE); |
| phungductung | 0:8ede47d38d10 | 783 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 784 | } |
| phungductung | 0:8ede47d38d10 | 785 | |
| phungductung | 0:8ede47d38d10 | 786 | /* CEC transmit error interrupt occurred --------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 787 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TXERR) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_TXERR) != RESET)) |
| phungductung | 0:8ede47d38d10 | 788 | { |
| phungductung | 0:8ede47d38d10 | 789 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXERR); |
| phungductung | 0:8ede47d38d10 | 790 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 791 | } |
| phungductung | 0:8ede47d38d10 | 792 | |
| phungductung | 0:8ede47d38d10 | 793 | /* CEC TX underrun error interrupt occurred --------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 794 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TXUDR) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_TXUDR) != RESET)) |
| phungductung | 0:8ede47d38d10 | 795 | { |
| phungductung | 0:8ede47d38d10 | 796 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXUDR); |
| phungductung | 0:8ede47d38d10 | 797 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 798 | } |
| phungductung | 0:8ede47d38d10 | 799 | |
| phungductung | 0:8ede47d38d10 | 800 | /* CEC TX arbitration error interrupt occurred --------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 801 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_ARBLST) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_ARBLST) != RESET)) |
| phungductung | 0:8ede47d38d10 | 802 | { |
| phungductung | 0:8ede47d38d10 | 803 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_ARBLST); |
| phungductung | 0:8ede47d38d10 | 804 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 805 | } |
| phungductung | 0:8ede47d38d10 | 806 | |
| phungductung | 0:8ede47d38d10 | 807 | /* CEC RX overrun error interrupt occurred --------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 808 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_RXOVR) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_RXOVR) != RESET)) |
| phungductung | 0:8ede47d38d10 | 809 | { |
| phungductung | 0:8ede47d38d10 | 810 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXOVR); |
| phungductung | 0:8ede47d38d10 | 811 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 812 | } |
| phungductung | 0:8ede47d38d10 | 813 | |
| phungductung | 0:8ede47d38d10 | 814 | /* CEC RX bit rising error interrupt occurred --------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 815 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_BRE) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_BRE) != RESET)) |
| phungductung | 0:8ede47d38d10 | 816 | { |
| phungductung | 0:8ede47d38d10 | 817 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_BRE); |
| phungductung | 0:8ede47d38d10 | 818 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 819 | } |
| phungductung | 0:8ede47d38d10 | 820 | |
| phungductung | 0:8ede47d38d10 | 821 | /* CEC RX short bit period error interrupt occurred --------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 822 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_SBPE) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_SBPE) != RESET)) |
| phungductung | 0:8ede47d38d10 | 823 | { |
| phungductung | 0:8ede47d38d10 | 824 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_SBPE); |
| phungductung | 0:8ede47d38d10 | 825 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 826 | } |
| phungductung | 0:8ede47d38d10 | 827 | |
| phungductung | 0:8ede47d38d10 | 828 | /* CEC RX long bit period error interrupt occurred --------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 829 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_LBPE) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_LBPE) != RESET)) |
| phungductung | 0:8ede47d38d10 | 830 | { |
| phungductung | 0:8ede47d38d10 | 831 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_LBPE); |
| phungductung | 0:8ede47d38d10 | 832 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 833 | } |
| phungductung | 0:8ede47d38d10 | 834 | |
| phungductung | 0:8ede47d38d10 | 835 | /* CEC RX missing acknowledge error interrupt occurred --------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 836 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_RXACKE) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_RXACKE) != RESET)) |
| phungductung | 0:8ede47d38d10 | 837 | { |
| phungductung | 0:8ede47d38d10 | 838 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXACKE); |
| phungductung | 0:8ede47d38d10 | 839 | hcec->State = HAL_CEC_STATE_ERROR; |
| phungductung | 0:8ede47d38d10 | 840 | } |
| phungductung | 0:8ede47d38d10 | 841 | |
| phungductung | 0:8ede47d38d10 | 842 | if ((hcec->ErrorCode & CEC_ISR_ALL_ERROR) != 0) |
| phungductung | 0:8ede47d38d10 | 843 | { |
| phungductung | 0:8ede47d38d10 | 844 | HAL_CEC_ErrorCallback(hcec); |
| phungductung | 0:8ede47d38d10 | 845 | } |
| phungductung | 0:8ede47d38d10 | 846 | |
| phungductung | 0:8ede47d38d10 | 847 | /* CEC RX byte received interrupt ---------------------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 848 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_RXBR) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_RXBR) != RESET)) |
| phungductung | 0:8ede47d38d10 | 849 | { |
| phungductung | 0:8ede47d38d10 | 850 | /* RXBR IT is cleared during HAL_CEC_Transmit_IT processing */ |
| phungductung | 0:8ede47d38d10 | 851 | CEC_Receive_IT(hcec); |
| phungductung | 0:8ede47d38d10 | 852 | } |
| phungductung | 0:8ede47d38d10 | 853 | |
| phungductung | 0:8ede47d38d10 | 854 | /* CEC RX end received interrupt ---------------------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 855 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_RXEND) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_RXEND) != RESET)) |
| phungductung | 0:8ede47d38d10 | 856 | { |
| phungductung | 0:8ede47d38d10 | 857 | /* RXBR IT is cleared during HAL_CEC_Transmit_IT processing */ |
| phungductung | 0:8ede47d38d10 | 858 | CEC_Receive_IT(hcec); |
| phungductung | 0:8ede47d38d10 | 859 | } |
| phungductung | 0:8ede47d38d10 | 860 | |
| phungductung | 0:8ede47d38d10 | 861 | |
| phungductung | 0:8ede47d38d10 | 862 | /* CEC TX byte request interrupt ------------------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 863 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TXBR) != RESET) &&(__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_TXBR) != RESET)) |
| phungductung | 0:8ede47d38d10 | 864 | { |
| phungductung | 0:8ede47d38d10 | 865 | /* TXBR IT is cleared during HAL_CEC_Transmit_IT processing */ |
| phungductung | 0:8ede47d38d10 | 866 | CEC_Transmit_IT(hcec); |
| phungductung | 0:8ede47d38d10 | 867 | } |
| phungductung | 0:8ede47d38d10 | 868 | |
| phungductung | 0:8ede47d38d10 | 869 | /* CEC TX end interrupt ------------------------------------------------*/ |
| phungductung | 0:8ede47d38d10 | 870 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TXEND) != RESET) &&(__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_TXEND) != RESET)) |
| phungductung | 0:8ede47d38d10 | 871 | { |
| phungductung | 0:8ede47d38d10 | 872 | /* TXEND IT is cleared during HAL_CEC_Transmit_IT processing */ |
| phungductung | 0:8ede47d38d10 | 873 | CEC_Transmit_IT(hcec); |
| phungductung | 0:8ede47d38d10 | 874 | } |
| phungductung | 0:8ede47d38d10 | 875 | } |
| phungductung | 0:8ede47d38d10 | 876 | |
| phungductung | 0:8ede47d38d10 | 877 | /** |
| phungductung | 0:8ede47d38d10 | 878 | * @brief Tx Transfer completed callback |
| phungductung | 0:8ede47d38d10 | 879 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 880 | * @retval None |
| phungductung | 0:8ede47d38d10 | 881 | */ |
| phungductung | 0:8ede47d38d10 | 882 | __weak void HAL_CEC_TxCpltCallback(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 883 | { |
| phungductung | 0:8ede47d38d10 | 884 | /* Prevent unused argument(s) compilation warning */ |
| phungductung | 0:8ede47d38d10 | 885 | UNUSED(hcec); |
| phungductung | 0:8ede47d38d10 | 886 | /* NOTE : This function should not be modified, when the callback is needed, |
| phungductung | 0:8ede47d38d10 | 887 | the HAL_CEC_TxCpltCallback can be implemented in the user file |
| phungductung | 0:8ede47d38d10 | 888 | */ |
| phungductung | 0:8ede47d38d10 | 889 | } |
| phungductung | 0:8ede47d38d10 | 890 | |
| phungductung | 0:8ede47d38d10 | 891 | /** |
| phungductung | 0:8ede47d38d10 | 892 | * @brief Rx Transfer completed callback |
| phungductung | 0:8ede47d38d10 | 893 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 894 | * @retval None |
| phungductung | 0:8ede47d38d10 | 895 | */ |
| phungductung | 0:8ede47d38d10 | 896 | __weak void HAL_CEC_RxCpltCallback(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 897 | { |
| phungductung | 0:8ede47d38d10 | 898 | /* Prevent unused argument(s) compilation warning */ |
| phungductung | 0:8ede47d38d10 | 899 | UNUSED(hcec); |
| phungductung | 0:8ede47d38d10 | 900 | /* NOTE : This function should not be modified, when the callback is needed, |
| phungductung | 0:8ede47d38d10 | 901 | the HAL_CEC_TxCpltCallback can be implemented in the user file |
| phungductung | 0:8ede47d38d10 | 902 | */ |
| phungductung | 0:8ede47d38d10 | 903 | } |
| phungductung | 0:8ede47d38d10 | 904 | |
| phungductung | 0:8ede47d38d10 | 905 | /** |
| phungductung | 0:8ede47d38d10 | 906 | * @brief CEC error callbacks |
| phungductung | 0:8ede47d38d10 | 907 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 908 | * @retval None |
| phungductung | 0:8ede47d38d10 | 909 | */ |
| phungductung | 0:8ede47d38d10 | 910 | __weak void HAL_CEC_ErrorCallback(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 911 | { |
| phungductung | 0:8ede47d38d10 | 912 | /* Prevent unused argument(s) compilation warning */ |
| phungductung | 0:8ede47d38d10 | 913 | UNUSED(hcec); |
| phungductung | 0:8ede47d38d10 | 914 | /* NOTE : This function should not be modified, when the callback is needed, |
| phungductung | 0:8ede47d38d10 | 915 | the HAL_CEC_ErrorCallback can be implemented in the user file |
| phungductung | 0:8ede47d38d10 | 916 | */ |
| phungductung | 0:8ede47d38d10 | 917 | } |
| phungductung | 0:8ede47d38d10 | 918 | /** |
| phungductung | 0:8ede47d38d10 | 919 | * @} |
| phungductung | 0:8ede47d38d10 | 920 | */ |
| phungductung | 0:8ede47d38d10 | 921 | |
| phungductung | 0:8ede47d38d10 | 922 | /** @defgroup CEC_Exported_Functions_Group3 Peripheral Control function |
| phungductung | 0:8ede47d38d10 | 923 | * @brief CEC control functions |
| phungductung | 0:8ede47d38d10 | 924 | * |
| phungductung | 0:8ede47d38d10 | 925 | @verbatim |
| phungductung | 0:8ede47d38d10 | 926 | =============================================================================== |
| phungductung | 0:8ede47d38d10 | 927 | ##### Peripheral Control function ##### |
| phungductung | 0:8ede47d38d10 | 928 | =============================================================================== |
| phungductung | 0:8ede47d38d10 | 929 | [..] |
| phungductung | 0:8ede47d38d10 | 930 | This subsection provides a set of functions allowing to control the CEC. |
| phungductung | 0:8ede47d38d10 | 931 | (+) HAL_CEC_GetState() API can be helpful to check in run-time the state of the CEC peripheral. |
| phungductung | 0:8ede47d38d10 | 932 | @endverbatim |
| phungductung | 0:8ede47d38d10 | 933 | * @{ |
| phungductung | 0:8ede47d38d10 | 934 | */ |
| phungductung | 0:8ede47d38d10 | 935 | /** |
| phungductung | 0:8ede47d38d10 | 936 | * @brief return the CEC state |
| phungductung | 0:8ede47d38d10 | 937 | * @param hcec: CEC handle |
| phungductung | 0:8ede47d38d10 | 938 | * @retval HAL state |
| phungductung | 0:8ede47d38d10 | 939 | */ |
| phungductung | 0:8ede47d38d10 | 940 | HAL_CEC_StateTypeDef HAL_CEC_GetState(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 941 | { |
| phungductung | 0:8ede47d38d10 | 942 | return hcec->State; |
| phungductung | 0:8ede47d38d10 | 943 | } |
| phungductung | 0:8ede47d38d10 | 944 | |
| phungductung | 0:8ede47d38d10 | 945 | /** |
| phungductung | 0:8ede47d38d10 | 946 | * @brief Return the CEC error code |
| phungductung | 0:8ede47d38d10 | 947 | * @param hcec : pointer to a CEC_HandleTypeDef structure that contains |
| phungductung | 0:8ede47d38d10 | 948 | * the configuration information for the specified CEC. |
| phungductung | 0:8ede47d38d10 | 949 | * @retval CEC Error Code |
| phungductung | 0:8ede47d38d10 | 950 | */ |
| phungductung | 0:8ede47d38d10 | 951 | uint32_t HAL_CEC_GetError(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 952 | { |
| phungductung | 0:8ede47d38d10 | 953 | return hcec->ErrorCode; |
| phungductung | 0:8ede47d38d10 | 954 | } |
| phungductung | 0:8ede47d38d10 | 955 | |
| phungductung | 0:8ede47d38d10 | 956 | /** |
| phungductung | 0:8ede47d38d10 | 957 | * @} |
| phungductung | 0:8ede47d38d10 | 958 | */ |
| phungductung | 0:8ede47d38d10 | 959 | |
| phungductung | 0:8ede47d38d10 | 960 | /** |
| phungductung | 0:8ede47d38d10 | 961 | * @brief Send data in interrupt mode |
| phungductung | 0:8ede47d38d10 | 962 | * @param hcec: CEC handle. |
| phungductung | 0:8ede47d38d10 | 963 | * Function called under interruption only, once |
| phungductung | 0:8ede47d38d10 | 964 | * interruptions have been enabled by HAL_CEC_Transmit_IT() |
| phungductung | 0:8ede47d38d10 | 965 | * @retval HAL status |
| phungductung | 0:8ede47d38d10 | 966 | */ |
| phungductung | 0:8ede47d38d10 | 967 | static HAL_StatusTypeDef CEC_Transmit_IT(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 968 | { |
| phungductung | 0:8ede47d38d10 | 969 | /* if the IP is already busy or if there is a previous transmission |
| phungductung | 0:8ede47d38d10 | 970 | already pending due to arbitration loss */ |
| phungductung | 0:8ede47d38d10 | 971 | if ((hcec->State == HAL_CEC_STATE_BUSY_TX) |
| phungductung | 0:8ede47d38d10 | 972 | || (__HAL_CEC_GET_TRANSMISSION_START_FLAG(hcec) != RESET)) |
| phungductung | 0:8ede47d38d10 | 973 | { |
| phungductung | 0:8ede47d38d10 | 974 | __HAL_LOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 975 | /* set state to BUSY TX, in case it wasn't set already (case |
| phungductung | 0:8ede47d38d10 | 976 | * of transmission new attempt after arbitration loss) */ |
| phungductung | 0:8ede47d38d10 | 977 | if (hcec->State != HAL_CEC_STATE_BUSY_TX) |
| phungductung | 0:8ede47d38d10 | 978 | { |
| phungductung | 0:8ede47d38d10 | 979 | hcec->State = HAL_CEC_STATE_BUSY_TX; |
| phungductung | 0:8ede47d38d10 | 980 | } |
| phungductung | 0:8ede47d38d10 | 981 | |
| phungductung | 0:8ede47d38d10 | 982 | /* if all data have been sent */ |
| phungductung | 0:8ede47d38d10 | 983 | if(hcec->TxXferCount == 0) |
| phungductung | 0:8ede47d38d10 | 984 | { |
| phungductung | 0:8ede47d38d10 | 985 | /* Disable Peripheral to write CEC_IER register */ |
| phungductung | 0:8ede47d38d10 | 986 | __HAL_CEC_DISABLE(hcec); |
| phungductung | 0:8ede47d38d10 | 987 | |
| phungductung | 0:8ede47d38d10 | 988 | /* Disable the CEC Transmission Interrupts */ |
| phungductung | 0:8ede47d38d10 | 989 | __HAL_CEC_DISABLE_IT(hcec, CEC_IT_TXBR|CEC_IT_TXEND); |
| phungductung | 0:8ede47d38d10 | 990 | /* Disable the CEC Transmission Error Interrupts */ |
| phungductung | 0:8ede47d38d10 | 991 | __HAL_CEC_DISABLE_IT(hcec, CEC_IER_TX_ALL_ERR); |
| phungductung | 0:8ede47d38d10 | 992 | |
| phungductung | 0:8ede47d38d10 | 993 | /* Enable the Peripheral */ |
| phungductung | 0:8ede47d38d10 | 994 | __HAL_CEC_ENABLE(hcec); |
| phungductung | 0:8ede47d38d10 | 995 | |
| phungductung | 0:8ede47d38d10 | 996 | __HAL_CEC_CLEAR_FLAG(hcec,CEC_FLAG_TXBR|CEC_FLAG_TXEND); |
| phungductung | 0:8ede47d38d10 | 997 | |
| phungductung | 0:8ede47d38d10 | 998 | hcec->State = HAL_CEC_STATE_READY; |
| phungductung | 0:8ede47d38d10 | 999 | /* Call the Process Unlocked before calling the Tx call back API to give the possibility to |
| phungductung | 0:8ede47d38d10 | 1000 | start again the Transmission under the Tx call back API */ |
| phungductung | 0:8ede47d38d10 | 1001 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 1002 | |
| phungductung | 0:8ede47d38d10 | 1003 | HAL_CEC_TxCpltCallback(hcec); |
| phungductung | 0:8ede47d38d10 | 1004 | |
| phungductung | 0:8ede47d38d10 | 1005 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 1006 | } |
| phungductung | 0:8ede47d38d10 | 1007 | else |
| phungductung | 0:8ede47d38d10 | 1008 | { |
| phungductung | 0:8ede47d38d10 | 1009 | if (hcec->TxXferCount == 1) |
| phungductung | 0:8ede47d38d10 | 1010 | { |
| phungductung | 0:8ede47d38d10 | 1011 | /* if this is the last byte transmission, set TX End of Message (TXEOM) bit */ |
| phungductung | 0:8ede47d38d10 | 1012 | __HAL_CEC_LAST_BYTE_TX_SET(hcec); |
| phungductung | 0:8ede47d38d10 | 1013 | } |
| phungductung | 0:8ede47d38d10 | 1014 | /* clear Tx-Byte request flag */ |
| phungductung | 0:8ede47d38d10 | 1015 | __HAL_CEC_CLEAR_FLAG(hcec,CEC_FLAG_TXBR); |
| phungductung | 0:8ede47d38d10 | 1016 | hcec->Instance->TXDR = *hcec->pTxBuffPtr++; |
| phungductung | 0:8ede47d38d10 | 1017 | hcec->TxXferCount--; |
| phungductung | 0:8ede47d38d10 | 1018 | |
| phungductung | 0:8ede47d38d10 | 1019 | /* Process Unlocked */ |
| phungductung | 0:8ede47d38d10 | 1020 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 1021 | |
| phungductung | 0:8ede47d38d10 | 1022 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 1023 | } |
| phungductung | 0:8ede47d38d10 | 1024 | } |
| phungductung | 0:8ede47d38d10 | 1025 | else |
| phungductung | 0:8ede47d38d10 | 1026 | { |
| phungductung | 0:8ede47d38d10 | 1027 | return HAL_BUSY; |
| phungductung | 0:8ede47d38d10 | 1028 | } |
| phungductung | 0:8ede47d38d10 | 1029 | } |
| phungductung | 0:8ede47d38d10 | 1030 | |
| phungductung | 0:8ede47d38d10 | 1031 | |
| phungductung | 0:8ede47d38d10 | 1032 | /** |
| phungductung | 0:8ede47d38d10 | 1033 | * @brief Receive data in interrupt mode. |
| phungductung | 0:8ede47d38d10 | 1034 | * @param hcec: CEC handle. |
| phungductung | 0:8ede47d38d10 | 1035 | * Function called under interruption only, once |
| phungductung | 0:8ede47d38d10 | 1036 | * interruptions have been enabled by HAL_CEC_Receive_IT() |
| phungductung | 0:8ede47d38d10 | 1037 | * @retval HAL status |
| phungductung | 0:8ede47d38d10 | 1038 | */ |
| phungductung | 0:8ede47d38d10 | 1039 | static HAL_StatusTypeDef CEC_Receive_IT(CEC_HandleTypeDef *hcec) |
| phungductung | 0:8ede47d38d10 | 1040 | { |
| phungductung | 0:8ede47d38d10 | 1041 | uint32_t tempisr; |
| phungductung | 0:8ede47d38d10 | 1042 | |
| phungductung | 0:8ede47d38d10 | 1043 | /* Three different conditions are tested to carry out the RX IT processing: |
| phungductung | 0:8ede47d38d10 | 1044 | * - the IP is in reception stand-by (the IP state is HAL_CEC_STATE_STANDBY_RX) and |
| phungductung | 0:8ede47d38d10 | 1045 | * the reception of the first byte is starting |
| phungductung | 0:8ede47d38d10 | 1046 | * - a message reception is already on-going (the IP state is HAL_CEC_STATE_BUSY_RX) |
| phungductung | 0:8ede47d38d10 | 1047 | * and a new byte is being received |
| phungductung | 0:8ede47d38d10 | 1048 | * - a transmission has just been started (the IP state is HAL_CEC_STATE_BUSY_TX) |
| phungductung | 0:8ede47d38d10 | 1049 | * but has been interrupted by a new message reception or discarded due to |
| phungductung | 0:8ede47d38d10 | 1050 | * arbitration loss: the reception of the first or higher priority message |
| phungductung | 0:8ede47d38d10 | 1051 | * (the arbitration winner) is starting */ |
| phungductung | 0:8ede47d38d10 | 1052 | if ((hcec->State == HAL_CEC_STATE_STANDBY_RX) |
| phungductung | 0:8ede47d38d10 | 1053 | || (hcec->State == HAL_CEC_STATE_BUSY_RX) |
| phungductung | 0:8ede47d38d10 | 1054 | || (hcec->State == HAL_CEC_STATE_BUSY_TX)) |
| phungductung | 0:8ede47d38d10 | 1055 | { |
| phungductung | 0:8ede47d38d10 | 1056 | /* reception is starting */ |
| phungductung | 0:8ede47d38d10 | 1057 | hcec->State = HAL_CEC_STATE_BUSY_RX; |
| phungductung | 0:8ede47d38d10 | 1058 | tempisr = (uint32_t) (hcec->Instance->ISR); |
| phungductung | 0:8ede47d38d10 | 1059 | if ((tempisr & CEC_FLAG_RXBR) != 0) |
| phungductung | 0:8ede47d38d10 | 1060 | { |
| phungductung | 0:8ede47d38d10 | 1061 | /* Process Locked */ |
| phungductung | 0:8ede47d38d10 | 1062 | __HAL_LOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 1063 | /* read received byte */ |
| phungductung | 0:8ede47d38d10 | 1064 | *hcec->pRxBuffPtr++ = hcec->Instance->RXDR; |
| phungductung | 0:8ede47d38d10 | 1065 | /* if last byte has been received */ |
| phungductung | 0:8ede47d38d10 | 1066 | if ((tempisr & CEC_FLAG_RXEND) != 0) |
| phungductung | 0:8ede47d38d10 | 1067 | { |
| phungductung | 0:8ede47d38d10 | 1068 | /* clear IT */ |
| phungductung | 0:8ede47d38d10 | 1069 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXBR|CEC_FLAG_RXEND); |
| phungductung | 0:8ede47d38d10 | 1070 | /* RX interrupts are not disabled at this point. |
| phungductung | 0:8ede47d38d10 | 1071 | * Indeed, to disable the IT, the IP must be disabled first |
| phungductung | 0:8ede47d38d10 | 1072 | * which resets the TXSOM flag. In case of arbitration loss, |
| phungductung | 0:8ede47d38d10 | 1073 | * this leads to a transmission abort. |
| phungductung | 0:8ede47d38d10 | 1074 | * Therefore, RX interruptions disabling if so required, |
| phungductung | 0:8ede47d38d10 | 1075 | * is done in HAL_CEC_RxCpltCallback */ |
| phungductung | 0:8ede47d38d10 | 1076 | |
| phungductung | 0:8ede47d38d10 | 1077 | /* IP state is moved to READY. |
| phungductung | 0:8ede47d38d10 | 1078 | * If the IP must remain in standby mode to listen |
| phungductung | 0:8ede47d38d10 | 1079 | * any new message, it is up to HAL_CEC_RxCpltCallback |
| phungductung | 0:8ede47d38d10 | 1080 | * to move it again to HAL_CEC_STATE_STANDBY_RX */ |
| phungductung | 0:8ede47d38d10 | 1081 | hcec->State = HAL_CEC_STATE_READY; |
| phungductung | 0:8ede47d38d10 | 1082 | |
| phungductung | 0:8ede47d38d10 | 1083 | /* Call the Process Unlocked before calling the Rx call back API */ |
| phungductung | 0:8ede47d38d10 | 1084 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 1085 | HAL_CEC_RxCpltCallback(hcec); |
| phungductung | 0:8ede47d38d10 | 1086 | |
| phungductung | 0:8ede47d38d10 | 1087 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 1088 | } |
| phungductung | 0:8ede47d38d10 | 1089 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXBR); |
| phungductung | 0:8ede47d38d10 | 1090 | |
| phungductung | 0:8ede47d38d10 | 1091 | hcec->RxXferSize++; |
| phungductung | 0:8ede47d38d10 | 1092 | /* Process Unlocked */ |
| phungductung | 0:8ede47d38d10 | 1093 | __HAL_UNLOCK(hcec); |
| phungductung | 0:8ede47d38d10 | 1094 | |
| phungductung | 0:8ede47d38d10 | 1095 | return HAL_OK; |
| phungductung | 0:8ede47d38d10 | 1096 | } |
| phungductung | 0:8ede47d38d10 | 1097 | else |
| phungductung | 0:8ede47d38d10 | 1098 | { |
| phungductung | 0:8ede47d38d10 | 1099 | return HAL_BUSY; |
| phungductung | 0:8ede47d38d10 | 1100 | } |
| phungductung | 0:8ede47d38d10 | 1101 | } |
| phungductung | 0:8ede47d38d10 | 1102 | else |
| phungductung | 0:8ede47d38d10 | 1103 | { |
| phungductung | 0:8ede47d38d10 | 1104 | return HAL_BUSY; |
| phungductung | 0:8ede47d38d10 | 1105 | } |
| phungductung | 0:8ede47d38d10 | 1106 | } |
| phungductung | 0:8ede47d38d10 | 1107 | /** |
| phungductung | 0:8ede47d38d10 | 1108 | * @} |
| phungductung | 0:8ede47d38d10 | 1109 | */ |
| phungductung | 0:8ede47d38d10 | 1110 | #endif /* HAL_CEC_MODULE_ENABLED */ |
| phungductung | 0:8ede47d38d10 | 1111 | /** |
| phungductung | 0:8ede47d38d10 | 1112 | * @} |
| phungductung | 0:8ede47d38d10 | 1113 | */ |
| phungductung | 0:8ede47d38d10 | 1114 | |
| phungductung | 0:8ede47d38d10 | 1115 | /** |
| phungductung | 0:8ede47d38d10 | 1116 | * @} |
| phungductung | 0:8ede47d38d10 | 1117 | */ |
| phungductung | 0:8ede47d38d10 | 1118 | |
| phungductung | 0:8ede47d38d10 | 1119 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |