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Last commit 20 Feb 2019 by 
mbed official
targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_cec.c@581:39197bcd20f2, 2015-07-02 (annotated)
- Committer:
- mbed_official
- Date:
- Thu Jul 02 16:30:08 2015 +0100
- Revision:
- 581:39197bcd20f2
- Parent:
- 489:119543c9f674
Synchronized with git revision ae2d3cdffe70184eb8736d94f76c45c93f4b7724
Full URL: https://github.com/mbedmicro/mbed/commit/ae2d3cdffe70184eb8736d94f76c45c93f4b7724/
Make it possible to build the core mbed library with yotta
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed_official | 489:119543c9f674 | 1 | /** |
| mbed_official | 489:119543c9f674 | 2 | ****************************************************************************** |
| mbed_official | 489:119543c9f674 | 3 | * @file stm32f1xx_hal_cec.c |
| mbed_official | 489:119543c9f674 | 4 | * @author MCD Application Team |
| mbed_official | 489:119543c9f674 | 5 | * @version V1.0.0 |
| mbed_official | 489:119543c9f674 | 6 | * @date 15-December-2014 |
| mbed_official | 489:119543c9f674 | 7 | * @brief CEC HAL module driver. |
| mbed_official | 489:119543c9f674 | 8 | * This file provides firmware functions to manage the following |
| mbed_official | 489:119543c9f674 | 9 | * functionalities of the High Definition Multimedia Interface |
| mbed_official | 489:119543c9f674 | 10 | * Consumer Electronics Control Peripheral (CEC). |
| mbed_official | 489:119543c9f674 | 11 | * + Initialization and de-initialization functions |
| mbed_official | 489:119543c9f674 | 12 | * + IO operation functions |
| mbed_official | 489:119543c9f674 | 13 | * + Peripheral Control functions |
| mbed_official | 489:119543c9f674 | 14 | * |
| mbed_official | 489:119543c9f674 | 15 | * @verbatim |
| mbed_official | 489:119543c9f674 | 16 | ============================================================================== |
| mbed_official | 489:119543c9f674 | 17 | ##### How to use this driver ##### |
| mbed_official | 489:119543c9f674 | 18 | ============================================================================== |
| mbed_official | 489:119543c9f674 | 19 | [..] |
| mbed_official | 489:119543c9f674 | 20 | The CEC HAL driver can be used as follows: |
| mbed_official | 489:119543c9f674 | 21 | (#) Declare a CEC_HandleTypeDef handle structure. |
| mbed_official | 489:119543c9f674 | 22 | (#) Initialize the CEC low level resources by implementing the HAL_CEC_MspInit ()API: |
| mbed_official | 489:119543c9f674 | 23 | (##) Enable the CEC interface clock. |
| mbed_official | 489:119543c9f674 | 24 | (##) Enable the clock for the CEC GPIOs. |
| mbed_official | 489:119543c9f674 | 25 | (##) Configure these CEC pins as alternate function pull-up. |
| mbed_official | 489:119543c9f674 | 26 | (##) NVIC configuration if you need to use interrupt process (HAL_CEC_Transmit_IT() |
| mbed_official | 489:119543c9f674 | 27 | and HAL_CEC_Receive_IT() APIs): |
| mbed_official | 489:119543c9f674 | 28 | (##) Configure the CEC interrupt priority. |
| mbed_official | 489:119543c9f674 | 29 | (##) Enable the NVIC CEC IRQ handle. |
| mbed_official | 489:119543c9f674 | 30 | (##) The CEC interrupt is activated/deactivated by the HAL driver |
| mbed_official | 489:119543c9f674 | 31 | |
| mbed_official | 489:119543c9f674 | 32 | (#) Program the Bit Timing Error Mode and the Bit Period Error Mode in the hcec Init structure. |
| mbed_official | 489:119543c9f674 | 33 | |
| mbed_official | 489:119543c9f674 | 34 | (#) Initialize the CEC registers by calling the HAL_CEC_Init() API. |
| mbed_official | 489:119543c9f674 | 35 | |
| mbed_official | 489:119543c9f674 | 36 | (#) This API (HAL_CEC_Init()) configures also the low level Hardware GPIO, CLOCK, CORTEX...etc) |
| mbed_official | 489:119543c9f674 | 37 | by calling the customized HAL_CEC_MspInit() API. |
| mbed_official | 489:119543c9f674 | 38 | |
| mbed_official | 489:119543c9f674 | 39 | @endverbatim |
| mbed_official | 489:119543c9f674 | 40 | ****************************************************************************** |
| mbed_official | 489:119543c9f674 | 41 | * @attention |
| mbed_official | 489:119543c9f674 | 42 | * |
| mbed_official | 489:119543c9f674 | 43 | * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> |
| mbed_official | 489:119543c9f674 | 44 | * |
| mbed_official | 489:119543c9f674 | 45 | * Redistribution and use in source and binary forms, with or without modification, |
| mbed_official | 489:119543c9f674 | 46 | * are permitted provided that the following conditions are met: |
| mbed_official | 489:119543c9f674 | 47 | * 1. Redistributions of source code must retain the above copyright notice, |
| mbed_official | 489:119543c9f674 | 48 | * this list of conditions and the following disclaimer. |
| mbed_official | 489:119543c9f674 | 49 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| mbed_official | 489:119543c9f674 | 50 | * this list of conditions and the following disclaimer in the documentation |
| mbed_official | 489:119543c9f674 | 51 | * and/or other materials provided with the distribution. |
| mbed_official | 489:119543c9f674 | 52 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| mbed_official | 489:119543c9f674 | 53 | * may be used to endorse or promote products derived from this software |
| mbed_official | 489:119543c9f674 | 54 | * without specific prior written permission. |
| mbed_official | 489:119543c9f674 | 55 | * |
| mbed_official | 489:119543c9f674 | 56 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| mbed_official | 489:119543c9f674 | 57 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| mbed_official | 489:119543c9f674 | 58 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| mbed_official | 489:119543c9f674 | 59 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| mbed_official | 489:119543c9f674 | 60 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| mbed_official | 489:119543c9f674 | 61 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| mbed_official | 489:119543c9f674 | 62 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| mbed_official | 489:119543c9f674 | 63 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| mbed_official | 489:119543c9f674 | 64 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| mbed_official | 489:119543c9f674 | 65 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| mbed_official | 489:119543c9f674 | 66 | * |
| mbed_official | 489:119543c9f674 | 67 | ****************************************************************************** |
| mbed_official | 489:119543c9f674 | 68 | */ |
| mbed_official | 489:119543c9f674 | 69 | |
| mbed_official | 489:119543c9f674 | 70 | /* Includes ------------------------------------------------------------------*/ |
| mbed_official | 489:119543c9f674 | 71 | #include "stm32f1xx_hal.h" |
| mbed_official | 489:119543c9f674 | 72 | |
| mbed_official | 489:119543c9f674 | 73 | #ifdef HAL_CEC_MODULE_ENABLED |
| mbed_official | 489:119543c9f674 | 74 | |
| mbed_official | 489:119543c9f674 | 75 | #if defined(STM32F100xB) || defined(STM32F100xE) |
| mbed_official | 489:119543c9f674 | 76 | |
| mbed_official | 489:119543c9f674 | 77 | /** @addtogroup STM32F1xx_HAL_Driver |
| mbed_official | 489:119543c9f674 | 78 | * @{ |
| mbed_official | 489:119543c9f674 | 79 | */ |
| mbed_official | 489:119543c9f674 | 80 | |
| mbed_official | 489:119543c9f674 | 81 | /** @defgroup CEC CEC |
| mbed_official | 489:119543c9f674 | 82 | * @brief HAL CEC module driver |
| mbed_official | 489:119543c9f674 | 83 | * @{ |
| mbed_official | 489:119543c9f674 | 84 | */ |
| mbed_official | 489:119543c9f674 | 85 | |
| mbed_official | 489:119543c9f674 | 86 | /* Private typedef -----------------------------------------------------------*/ |
| mbed_official | 489:119543c9f674 | 87 | /* Private define ------------------------------------------------------------*/ |
| mbed_official | 489:119543c9f674 | 88 | /** @defgroup CEC_Private_Constants CEC Private Constants |
| mbed_official | 489:119543c9f674 | 89 | * @{ |
| mbed_official | 489:119543c9f674 | 90 | */ |
| mbed_official | 489:119543c9f674 | 91 | #define CEC_CFGR_FIELDS (CEC_CFGR_BTEM | CEC_CFGR_BPEM ) |
| mbed_official | 489:119543c9f674 | 92 | #define CEC_FLAG_TRANSMIT_MASK (CEC_FLAG_TSOM|CEC_FLAG_TEOM|CEC_FLAG_TBTRF) |
| mbed_official | 489:119543c9f674 | 93 | #define CEC_FLAG_RECEIVE_MASK (CEC_FLAG_RSOM|CEC_FLAG_REOM|CEC_FLAG_RBTF) |
| mbed_official | 489:119543c9f674 | 94 | #define CEC_ESR_ALL_ERROR (CEC_ESR_BTE|CEC_ESR_BPE|CEC_ESR_RBTFE|CEC_ESR_SBE|CEC_ESR_ACKE|CEC_ESR_LINE|CEC_ESR_TBTFE) |
| mbed_official | 489:119543c9f674 | 95 | #define CEC_RXXFERSIZE_INITIALIZE 0xFFFF /*!< Value used to initialise the RxXferSize of the handle */ |
| mbed_official | 489:119543c9f674 | 96 | /** |
| mbed_official | 489:119543c9f674 | 97 | * @} |
| mbed_official | 489:119543c9f674 | 98 | */ |
| mbed_official | 489:119543c9f674 | 99 | |
| mbed_official | 489:119543c9f674 | 100 | /* Private macro -------------------------------------------------------------*/ |
| mbed_official | 489:119543c9f674 | 101 | /* Private variables ---------------------------------------------------------*/ |
| mbed_official | 489:119543c9f674 | 102 | /* Private function prototypes -----------------------------------------------*/ |
| mbed_official | 489:119543c9f674 | 103 | /** @defgroup CEC_Private_Functions CEC Private Functions |
| mbed_official | 489:119543c9f674 | 104 | * @{ |
| mbed_official | 489:119543c9f674 | 105 | */ |
| mbed_official | 489:119543c9f674 | 106 | static HAL_StatusTypeDef CEC_Transmit_IT(CEC_HandleTypeDef *hcec); |
| mbed_official | 489:119543c9f674 | 107 | static HAL_StatusTypeDef CEC_Receive_IT(CEC_HandleTypeDef *hcec); |
| mbed_official | 489:119543c9f674 | 108 | /** |
| mbed_official | 489:119543c9f674 | 109 | * @} |
| mbed_official | 489:119543c9f674 | 110 | */ |
| mbed_official | 489:119543c9f674 | 111 | |
| mbed_official | 489:119543c9f674 | 112 | /* Exported functions ---------------------------------------------------------*/ |
| mbed_official | 489:119543c9f674 | 113 | |
| mbed_official | 489:119543c9f674 | 114 | /** @defgroup CEC_Exported_Functions CEC Exported Functions |
| mbed_official | 489:119543c9f674 | 115 | * @{ |
| mbed_official | 489:119543c9f674 | 116 | */ |
| mbed_official | 489:119543c9f674 | 117 | |
| mbed_official | 489:119543c9f674 | 118 | /** @defgroup CEC_Exported_Functions_Group1 Initialization and de-initialization functions |
| mbed_official | 489:119543c9f674 | 119 | * @brief Initialization and Configuration functions |
| mbed_official | 489:119543c9f674 | 120 | * |
| mbed_official | 489:119543c9f674 | 121 | @verbatim |
| mbed_official | 489:119543c9f674 | 122 | =============================================================================== |
| mbed_official | 489:119543c9f674 | 123 | ##### Initialization and Configuration functions ##### |
| mbed_official | 489:119543c9f674 | 124 | =============================================================================== |
| mbed_official | 489:119543c9f674 | 125 | [..] |
| mbed_official | 489:119543c9f674 | 126 | This subsection provides a set of functions allowing to initialize the CEC |
| mbed_official | 489:119543c9f674 | 127 | (+) The following parameters need to be configured: |
| mbed_official | 489:119543c9f674 | 128 | (++) TimingErrorFree |
| mbed_official | 489:119543c9f674 | 129 | (++) PeriodErrorFree |
| mbed_official | 489:119543c9f674 | 130 | (++) InitiatorAddress |
| mbed_official | 489:119543c9f674 | 131 | |
| mbed_official | 489:119543c9f674 | 132 | @endverbatim |
| mbed_official | 489:119543c9f674 | 133 | * @{ |
| mbed_official | 489:119543c9f674 | 134 | */ |
| mbed_official | 489:119543c9f674 | 135 | |
| mbed_official | 489:119543c9f674 | 136 | /** |
| mbed_official | 489:119543c9f674 | 137 | * @brief Initializes the CEC mode according to the specified |
| mbed_official | 489:119543c9f674 | 138 | * parameters in the CEC_InitTypeDef and creates the associated handle . |
| mbed_official | 489:119543c9f674 | 139 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 140 | * @retval HAL status |
| mbed_official | 489:119543c9f674 | 141 | */ |
| mbed_official | 489:119543c9f674 | 142 | HAL_StatusTypeDef HAL_CEC_Init(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 143 | { |
| mbed_official | 489:119543c9f674 | 144 | /* Check the CEC handle allocation */ |
| mbed_official | 489:119543c9f674 | 145 | if(hcec == NULL) |
| mbed_official | 489:119543c9f674 | 146 | { |
| mbed_official | 489:119543c9f674 | 147 | return HAL_ERROR; |
| mbed_official | 489:119543c9f674 | 148 | } |
| mbed_official | 489:119543c9f674 | 149 | |
| mbed_official | 489:119543c9f674 | 150 | /* Check the parameters */ |
| mbed_official | 489:119543c9f674 | 151 | assert_param(IS_CEC_ALL_INSTANCE(hcec->Instance)); |
| mbed_official | 489:119543c9f674 | 152 | assert_param(IS_CEC_BIT_TIMING_ERROR_MODE(hcec->Init.TimingErrorFree)); |
| mbed_official | 489:119543c9f674 | 153 | assert_param(IS_CEC_BIT_PERIOD_ERROR_MODE(hcec->Init.PeriodErrorFree)); |
| mbed_official | 489:119543c9f674 | 154 | assert_param(IS_CEC_ADDRESS(hcec->Init.InitiatorAddress)); |
| mbed_official | 489:119543c9f674 | 155 | |
| mbed_official | 489:119543c9f674 | 156 | if(hcec->State == HAL_CEC_STATE_RESET) |
| mbed_official | 489:119543c9f674 | 157 | { |
| mbed_official | 489:119543c9f674 | 158 | /* Allocate lock resource and initialize it */ |
| mbed_official | 489:119543c9f674 | 159 | hcec-> Lock = HAL_UNLOCKED; |
| mbed_official | 489:119543c9f674 | 160 | /* Init the low level hardware : GPIO, CLOCK */ |
| mbed_official | 489:119543c9f674 | 161 | HAL_CEC_MspInit(hcec); |
| mbed_official | 489:119543c9f674 | 162 | } |
| mbed_official | 489:119543c9f674 | 163 | |
| mbed_official | 489:119543c9f674 | 164 | hcec->State = HAL_CEC_STATE_BUSY; |
| mbed_official | 489:119543c9f674 | 165 | |
| mbed_official | 489:119543c9f674 | 166 | /* Disable the Peripheral */ |
| mbed_official | 489:119543c9f674 | 167 | __HAL_CEC_DISABLE(hcec); |
| mbed_official | 489:119543c9f674 | 168 | |
| mbed_official | 489:119543c9f674 | 169 | /* Write to CEC Control Register */ |
| mbed_official | 489:119543c9f674 | 170 | MODIFY_REG(hcec->Instance->CFGR, CEC_CFGR_FIELDS, hcec->Init.TimingErrorFree|hcec->Init.PeriodErrorFree); |
| mbed_official | 489:119543c9f674 | 171 | |
| mbed_official | 489:119543c9f674 | 172 | /* Write to CEC Own Address Register */ |
| mbed_official | 489:119543c9f674 | 173 | MODIFY_REG(hcec->Instance->OAR, CEC_OAR_OA, hcec->Init.InitiatorAddress); |
| mbed_official | 489:119543c9f674 | 174 | |
| mbed_official | 489:119543c9f674 | 175 | /* Configure the prescaler to generate the required 50 microseconds time base.*/ |
| mbed_official | 489:119543c9f674 | 176 | MODIFY_REG(hcec->Instance->PRES, CEC_PRES_PRES, 50*(HAL_RCC_GetPCLK1Freq()/1000000)-1); |
| mbed_official | 489:119543c9f674 | 177 | |
| mbed_official | 489:119543c9f674 | 178 | /* Enable the Peripheral */ |
| mbed_official | 489:119543c9f674 | 179 | __HAL_CEC_ENABLE(hcec); |
| mbed_official | 489:119543c9f674 | 180 | |
| mbed_official | 489:119543c9f674 | 181 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 182 | |
| mbed_official | 489:119543c9f674 | 183 | return HAL_OK; |
| mbed_official | 489:119543c9f674 | 184 | } |
| mbed_official | 489:119543c9f674 | 185 | |
| mbed_official | 489:119543c9f674 | 186 | |
| mbed_official | 489:119543c9f674 | 187 | |
| mbed_official | 489:119543c9f674 | 188 | /** |
| mbed_official | 489:119543c9f674 | 189 | * @brief DeInitializes the CEC peripheral |
| mbed_official | 489:119543c9f674 | 190 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 191 | * @retval HAL status |
| mbed_official | 489:119543c9f674 | 192 | */ |
| mbed_official | 489:119543c9f674 | 193 | HAL_StatusTypeDef HAL_CEC_DeInit(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 194 | { |
| mbed_official | 489:119543c9f674 | 195 | /* Check the CEC handle allocation */ |
| mbed_official | 489:119543c9f674 | 196 | if(hcec == NULL) |
| mbed_official | 489:119543c9f674 | 197 | { |
| mbed_official | 489:119543c9f674 | 198 | return HAL_ERROR; |
| mbed_official | 489:119543c9f674 | 199 | } |
| mbed_official | 489:119543c9f674 | 200 | |
| mbed_official | 489:119543c9f674 | 201 | /* Check the parameters */ |
| mbed_official | 489:119543c9f674 | 202 | assert_param(IS_CEC_ALL_INSTANCE(hcec->Instance)); |
| mbed_official | 489:119543c9f674 | 203 | |
| mbed_official | 489:119543c9f674 | 204 | hcec->State = HAL_CEC_STATE_BUSY; |
| mbed_official | 489:119543c9f674 | 205 | |
| mbed_official | 489:119543c9f674 | 206 | /* Set peripheral to reset state */ |
| mbed_official | 489:119543c9f674 | 207 | hcec->Instance->CFGR = 0x0; |
| mbed_official | 489:119543c9f674 | 208 | hcec->Instance->OAR = 0x0; |
| mbed_official | 489:119543c9f674 | 209 | hcec->Instance->PRES = 0x0; |
| mbed_official | 489:119543c9f674 | 210 | hcec->Instance->CFGR = 0x0; |
| mbed_official | 489:119543c9f674 | 211 | hcec->Instance->ESR = 0x0; |
| mbed_official | 489:119543c9f674 | 212 | hcec->Instance->CSR = 0x0; |
| mbed_official | 489:119543c9f674 | 213 | hcec->Instance->TXD = 0x0; |
| mbed_official | 489:119543c9f674 | 214 | hcec->Instance->RXD = 0x0; |
| mbed_official | 489:119543c9f674 | 215 | |
| mbed_official | 489:119543c9f674 | 216 | /* Disable the Peripheral */ |
| mbed_official | 489:119543c9f674 | 217 | __HAL_CEC_DISABLE(hcec); |
| mbed_official | 489:119543c9f674 | 218 | |
| mbed_official | 489:119543c9f674 | 219 | /* DeInit the low level hardware */ |
| mbed_official | 489:119543c9f674 | 220 | HAL_CEC_MspDeInit(hcec); |
| mbed_official | 489:119543c9f674 | 221 | |
| mbed_official | 489:119543c9f674 | 222 | hcec->ErrorCode = HAL_CEC_ERROR_NONE; |
| mbed_official | 489:119543c9f674 | 223 | hcec->State = HAL_CEC_STATE_RESET; |
| mbed_official | 489:119543c9f674 | 224 | |
| mbed_official | 489:119543c9f674 | 225 | /* Process Unlock */ |
| mbed_official | 489:119543c9f674 | 226 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 227 | |
| mbed_official | 489:119543c9f674 | 228 | return HAL_OK; |
| mbed_official | 489:119543c9f674 | 229 | } |
| mbed_official | 489:119543c9f674 | 230 | |
| mbed_official | 489:119543c9f674 | 231 | /** |
| mbed_official | 489:119543c9f674 | 232 | * @brief CEC MSP Init |
| mbed_official | 489:119543c9f674 | 233 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 234 | * @retval None |
| mbed_official | 489:119543c9f674 | 235 | */ |
| mbed_official | 489:119543c9f674 | 236 | __weak void HAL_CEC_MspInit(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 237 | { |
| mbed_official | 489:119543c9f674 | 238 | /* NOTE : This function should not be modified, when the callback is needed, |
| mbed_official | 489:119543c9f674 | 239 | the HAL_CEC_MspInit can be implemented in the user file |
| mbed_official | 489:119543c9f674 | 240 | */ |
| mbed_official | 489:119543c9f674 | 241 | } |
| mbed_official | 489:119543c9f674 | 242 | |
| mbed_official | 489:119543c9f674 | 243 | /** |
| mbed_official | 489:119543c9f674 | 244 | * @brief CEC MSP DeInit |
| mbed_official | 489:119543c9f674 | 245 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 246 | * @retval None |
| mbed_official | 489:119543c9f674 | 247 | */ |
| mbed_official | 489:119543c9f674 | 248 | __weak void HAL_CEC_MspDeInit(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 249 | { |
| mbed_official | 489:119543c9f674 | 250 | /* NOTE : This function should not be modified, when the callback is needed, |
| mbed_official | 489:119543c9f674 | 251 | the HAL_CEC_MspDeInit can be implemented in the user file |
| mbed_official | 489:119543c9f674 | 252 | */ |
| mbed_official | 489:119543c9f674 | 253 | } |
| mbed_official | 489:119543c9f674 | 254 | |
| mbed_official | 489:119543c9f674 | 255 | /** |
| mbed_official | 489:119543c9f674 | 256 | * @} |
| mbed_official | 489:119543c9f674 | 257 | */ |
| mbed_official | 489:119543c9f674 | 258 | |
| mbed_official | 489:119543c9f674 | 259 | /** @defgroup CEC_Exported_Functions_Group2 Input and Output operation functions |
| mbed_official | 489:119543c9f674 | 260 | * @brief CEC Transmit/Receive functions |
| mbed_official | 489:119543c9f674 | 261 | * |
| mbed_official | 489:119543c9f674 | 262 | @verbatim |
| mbed_official | 489:119543c9f674 | 263 | =============================================================================== |
| mbed_official | 489:119543c9f674 | 264 | ##### IO operation functions ##### |
| mbed_official | 489:119543c9f674 | 265 | =============================================================================== |
| mbed_official | 489:119543c9f674 | 266 | [..] |
| mbed_official | 489:119543c9f674 | 267 | This subsection provides a set of functions allowing to manage the CEC data transfers. |
| mbed_official | 489:119543c9f674 | 268 | |
| mbed_official | 489:119543c9f674 | 269 | (#) There are two modes of transfer: |
| mbed_official | 489:119543c9f674 | 270 | (##) Blocking mode: The communication is performed in polling mode. |
| mbed_official | 489:119543c9f674 | 271 | The HAL status of all data processing is returned by the same function |
| mbed_official | 489:119543c9f674 | 272 | after finishing transfer. |
| mbed_official | 489:119543c9f674 | 273 | (##) No-Blocking mode: The communication is performed using Interrupts. |
| mbed_official | 489:119543c9f674 | 274 | These API's return the HAL status. |
| mbed_official | 489:119543c9f674 | 275 | The end of the data processing will be indicated through the |
| mbed_official | 489:119543c9f674 | 276 | dedicated CEC IRQ when using Interrupt mode. |
| mbed_official | 489:119543c9f674 | 277 | The HAL_CEC_TxCpltCallback(), HAL_CEC_RxCpltCallback() user callbacks |
| mbed_official | 489:119543c9f674 | 278 | will be executed respectivelly at the end of the Transmit or Receive process. |
| mbed_official | 489:119543c9f674 | 279 | The HAL_CEC_ErrorCallback()user callback will be executed when a communication |
| mbed_official | 489:119543c9f674 | 280 | error is detected |
| mbed_official | 489:119543c9f674 | 281 | (#) Blocking mode API's are : |
| mbed_official | 489:119543c9f674 | 282 | (##) HAL_CEC_Transmit() |
| mbed_official | 489:119543c9f674 | 283 | (##) HAL_CEC_Receive() |
| mbed_official | 489:119543c9f674 | 284 | (#) Non-Blocking mode API's with Interrupt are : |
| mbed_official | 489:119543c9f674 | 285 | (##) HAL_CEC_Transmit_IT() |
| mbed_official | 489:119543c9f674 | 286 | (##) HAL_CEC_Receive_IT() |
| mbed_official | 489:119543c9f674 | 287 | (##) HAL_CEC_IRQHandler() |
| mbed_official | 489:119543c9f674 | 288 | (#) A set of Transfer Complete Callbacks are provided in No_Blocking mode: |
| mbed_official | 489:119543c9f674 | 289 | (##) HAL_CEC_TxCpltCallback() |
| mbed_official | 489:119543c9f674 | 290 | (##) HAL_CEC_RxCpltCallback() |
| mbed_official | 489:119543c9f674 | 291 | (##) HAL_CEC_ErrorCallback() |
| mbed_official | 489:119543c9f674 | 292 | |
| mbed_official | 489:119543c9f674 | 293 | @endverbatim |
| mbed_official | 489:119543c9f674 | 294 | * @{ |
| mbed_official | 489:119543c9f674 | 295 | */ |
| mbed_official | 489:119543c9f674 | 296 | |
| mbed_official | 489:119543c9f674 | 297 | /** |
| mbed_official | 489:119543c9f674 | 298 | * @brief Send data in blocking mode |
| mbed_official | 489:119543c9f674 | 299 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 300 | * @param DestinationAddress: destination logical address |
| mbed_official | 489:119543c9f674 | 301 | * @param pData: pointer to input byte data buffer |
| mbed_official | 489:119543c9f674 | 302 | * @param Size: amount of data to be sent in bytes (without counting the header). |
| mbed_official | 489:119543c9f674 | 303 | * 0 means only the header is sent (ping operation). |
| mbed_official | 489:119543c9f674 | 304 | * Maximum TX size is 15 bytes (1 opcode and up to 14 operands). |
| mbed_official | 489:119543c9f674 | 305 | * @param Timeout: Timeout duration. |
| mbed_official | 489:119543c9f674 | 306 | * @retval HAL status |
| mbed_official | 489:119543c9f674 | 307 | */ |
| mbed_official | 489:119543c9f674 | 308 | HAL_StatusTypeDef HAL_CEC_Transmit(CEC_HandleTypeDef *hcec, uint8_t DestinationAddress, uint8_t *pData, uint32_t Size, uint32_t Timeout) |
| mbed_official | 489:119543c9f674 | 309 | { |
| mbed_official | 489:119543c9f674 | 310 | uint8_t temp = 0; |
| mbed_official | 489:119543c9f674 | 311 | uint32_t tickstart = 0; |
| mbed_official | 489:119543c9f674 | 312 | |
| mbed_official | 489:119543c9f674 | 313 | /* If the IP is ready */ |
| mbed_official | 489:119543c9f674 | 314 | if((hcec->State == HAL_CEC_STATE_READY) |
| mbed_official | 489:119543c9f674 | 315 | && (__HAL_CEC_GET_TRANSMISSION_START_FLAG(hcec) == RESET)) |
| mbed_official | 489:119543c9f674 | 316 | { |
| mbed_official | 489:119543c9f674 | 317 | /* Basic check on pData pointer */ |
| mbed_official | 489:119543c9f674 | 318 | if(((pData == NULL) && (Size > 0)) || (! IS_CEC_MSGSIZE(Size))) |
| mbed_official | 489:119543c9f674 | 319 | { |
| mbed_official | 489:119543c9f674 | 320 | return HAL_ERROR; |
| mbed_official | 489:119543c9f674 | 321 | } |
| mbed_official | 489:119543c9f674 | 322 | |
| mbed_official | 489:119543c9f674 | 323 | assert_param(IS_CEC_ADDRESS(DestinationAddress)); |
| mbed_official | 489:119543c9f674 | 324 | |
| mbed_official | 489:119543c9f674 | 325 | /* Process Locked */ |
| mbed_official | 489:119543c9f674 | 326 | __HAL_LOCK(hcec); |
| mbed_official | 489:119543c9f674 | 327 | |
| mbed_official | 489:119543c9f674 | 328 | /* Enter the transmit mode */ |
| mbed_official | 489:119543c9f674 | 329 | hcec->State = HAL_CEC_STATE_BUSY_TX; |
| mbed_official | 489:119543c9f674 | 330 | hcec->ErrorCode = HAL_CEC_ERROR_NONE; |
| mbed_official | 489:119543c9f674 | 331 | |
| mbed_official | 489:119543c9f674 | 332 | /* Initialize the number of bytes to send, |
| mbed_official | 489:119543c9f674 | 333 | * 0 means only one header is sent (ping operation) */ |
| mbed_official | 489:119543c9f674 | 334 | hcec->TxXferCount = Size; |
| mbed_official | 489:119543c9f674 | 335 | |
| mbed_official | 489:119543c9f674 | 336 | /* Send header block */ |
| mbed_official | 489:119543c9f674 | 337 | temp = (uint8_t)((uint32_t)(hcec->Init.InitiatorAddress) << CEC_INITIATOR_LSB_POS) | DestinationAddress; |
| mbed_official | 489:119543c9f674 | 338 | hcec->Instance->TXD = temp; |
| mbed_official | 489:119543c9f674 | 339 | |
| mbed_official | 489:119543c9f674 | 340 | /* In case no data to be sent, sender is only pinging the system */ |
| mbed_official | 489:119543c9f674 | 341 | if (Size != 0) |
| mbed_official | 489:119543c9f674 | 342 | { |
| mbed_official | 489:119543c9f674 | 343 | /* Set TX Start of Message (TXSOM) bit */ |
| mbed_official | 489:119543c9f674 | 344 | hcec->Instance->CSR = CEC_FLAG_TSOM; |
| mbed_official | 489:119543c9f674 | 345 | } |
| mbed_official | 489:119543c9f674 | 346 | else |
| mbed_official | 489:119543c9f674 | 347 | { |
| mbed_official | 489:119543c9f674 | 348 | /* Send a ping command */ |
| mbed_official | 489:119543c9f674 | 349 | hcec->Instance->CSR = CEC_FLAG_TEOM|CEC_FLAG_TSOM; |
| mbed_official | 489:119543c9f674 | 350 | } |
| mbed_official | 489:119543c9f674 | 351 | |
| mbed_official | 489:119543c9f674 | 352 | /* Polling TBTRF bit with timeout handling*/ |
| mbed_official | 489:119543c9f674 | 353 | while (hcec->TxXferCount > 0) |
| mbed_official | 489:119543c9f674 | 354 | { |
| mbed_official | 489:119543c9f674 | 355 | /* Decreasing of the number of remaining data to receive */ |
| mbed_official | 489:119543c9f674 | 356 | hcec->TxXferCount--; |
| mbed_official | 489:119543c9f674 | 357 | |
| mbed_official | 489:119543c9f674 | 358 | /* Timeout handling */ |
| mbed_official | 489:119543c9f674 | 359 | tickstart = HAL_GetTick(); |
| mbed_official | 489:119543c9f674 | 360 | |
| mbed_official | 489:119543c9f674 | 361 | /* Waiting for the next data transmission */ |
| mbed_official | 489:119543c9f674 | 362 | while(HAL_IS_BIT_CLR(hcec->Instance->CSR, CEC_FLAG_TBTRF)) |
| mbed_official | 489:119543c9f674 | 363 | { |
| mbed_official | 489:119543c9f674 | 364 | /* Timeout handling */ |
| mbed_official | 489:119543c9f674 | 365 | if(Timeout != HAL_MAX_DELAY) |
| mbed_official | 489:119543c9f674 | 366 | { |
| mbed_official | 489:119543c9f674 | 367 | if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout)) |
| mbed_official | 489:119543c9f674 | 368 | { |
| mbed_official | 489:119543c9f674 | 369 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 370 | /* Process Unlocked */ |
| mbed_official | 489:119543c9f674 | 371 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 372 | return HAL_TIMEOUT; |
| mbed_official | 489:119543c9f674 | 373 | } |
| mbed_official | 489:119543c9f674 | 374 | } |
| mbed_official | 489:119543c9f674 | 375 | |
| mbed_official | 489:119543c9f674 | 376 | /* Check if an error occured */ |
| mbed_official | 489:119543c9f674 | 377 | if(HAL_IS_BIT_SET(hcec->Instance->CSR, CEC_FLAG_TERR) || HAL_IS_BIT_SET(hcec->Instance->CSR, CEC_FLAG_RERR)) |
| mbed_official | 489:119543c9f674 | 378 | { |
| mbed_official | 489:119543c9f674 | 379 | /* Copy ESR for error handling purposes */ |
| mbed_official | 489:119543c9f674 | 380 | hcec->ErrorCode = READ_BIT(hcec->Instance->ESR, CEC_ESR_ALL_ERROR); |
| mbed_official | 489:119543c9f674 | 381 | |
| mbed_official | 489:119543c9f674 | 382 | /* Acknowledgement of the error */ |
| mbed_official | 489:119543c9f674 | 383 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TERR); |
| mbed_official | 489:119543c9f674 | 384 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RERR); |
| mbed_official | 489:119543c9f674 | 385 | |
| mbed_official | 489:119543c9f674 | 386 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 387 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 388 | return HAL_ERROR; |
| mbed_official | 489:119543c9f674 | 389 | } |
| mbed_official | 489:119543c9f674 | 390 | } |
| mbed_official | 489:119543c9f674 | 391 | |
| mbed_official | 489:119543c9f674 | 392 | /* Write the next data to TX buffer */ |
| mbed_official | 489:119543c9f674 | 393 | hcec->Instance->TXD = *pData++; |
| mbed_official | 489:119543c9f674 | 394 | |
| mbed_official | 489:119543c9f674 | 395 | /* If this is the last byte of the ongoing transmission */ |
| mbed_official | 489:119543c9f674 | 396 | if (hcec->TxXferCount == 0) |
| mbed_official | 489:119543c9f674 | 397 | { |
| mbed_official | 489:119543c9f674 | 398 | /* Acknowledge byte request and signal end of message */ |
| mbed_official | 489:119543c9f674 | 399 | MODIFY_REG(hcec->Instance->CSR, CEC_FLAG_TRANSMIT_MASK, CEC_FLAG_TEOM); |
| mbed_official | 489:119543c9f674 | 400 | } |
| mbed_official | 489:119543c9f674 | 401 | else |
| mbed_official | 489:119543c9f674 | 402 | { |
| mbed_official | 489:119543c9f674 | 403 | /* Acknowledge byte request by writing 0x00 */ |
| mbed_official | 489:119543c9f674 | 404 | MODIFY_REG(hcec->Instance->CSR, CEC_FLAG_TRANSMIT_MASK, 0x00); |
| mbed_official | 489:119543c9f674 | 405 | } |
| mbed_official | 489:119543c9f674 | 406 | } |
| mbed_official | 489:119543c9f674 | 407 | |
| mbed_official | 489:119543c9f674 | 408 | /* Timeout handling */ |
| mbed_official | 489:119543c9f674 | 409 | tickstart = HAL_GetTick(); |
| mbed_official | 489:119543c9f674 | 410 | |
| mbed_official | 489:119543c9f674 | 411 | /* Wait for message transmission completion (TBTRF is set) */ |
| mbed_official | 489:119543c9f674 | 412 | while (HAL_IS_BIT_CLR(hcec->Instance->CSR, CEC_FLAG_TBTRF)) |
| mbed_official | 489:119543c9f674 | 413 | { |
| mbed_official | 489:119543c9f674 | 414 | /* Timeout handling */ |
| mbed_official | 489:119543c9f674 | 415 | if(Timeout != HAL_MAX_DELAY) |
| mbed_official | 489:119543c9f674 | 416 | { |
| mbed_official | 489:119543c9f674 | 417 | if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout)) |
| mbed_official | 489:119543c9f674 | 418 | { |
| mbed_official | 489:119543c9f674 | 419 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 420 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 421 | return HAL_TIMEOUT; |
| mbed_official | 489:119543c9f674 | 422 | } |
| mbed_official | 489:119543c9f674 | 423 | } |
| mbed_official | 489:119543c9f674 | 424 | |
| mbed_official | 489:119543c9f674 | 425 | /* Check of error during transmission of the last byte */ |
| mbed_official | 489:119543c9f674 | 426 | if(HAL_IS_BIT_SET(hcec->Instance->CSR, CEC_FLAG_TERR) || HAL_IS_BIT_SET(hcec->Instance->CSR, CEC_FLAG_RERR)) |
| mbed_official | 489:119543c9f674 | 427 | { |
| mbed_official | 489:119543c9f674 | 428 | /* Copy ESR for error handling purposes */ |
| mbed_official | 489:119543c9f674 | 429 | hcec->ErrorCode = READ_BIT(hcec->Instance->ESR, CEC_ESR_ALL_ERROR); |
| mbed_official | 489:119543c9f674 | 430 | |
| mbed_official | 489:119543c9f674 | 431 | /* Acknowledgement of the error */ |
| mbed_official | 489:119543c9f674 | 432 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TERR); |
| mbed_official | 489:119543c9f674 | 433 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RERR); |
| mbed_official | 489:119543c9f674 | 434 | |
| mbed_official | 489:119543c9f674 | 435 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 436 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 437 | return HAL_ERROR; |
| mbed_official | 489:119543c9f674 | 438 | } |
| mbed_official | 489:119543c9f674 | 439 | } |
| mbed_official | 489:119543c9f674 | 440 | |
| mbed_official | 489:119543c9f674 | 441 | /* Check of error after the last byte transmission */ |
| mbed_official | 489:119543c9f674 | 442 | if(HAL_IS_BIT_SET(hcec->Instance->CSR, CEC_FLAG_TERR) || HAL_IS_BIT_SET(hcec->Instance->CSR, CEC_FLAG_RERR)) |
| mbed_official | 489:119543c9f674 | 443 | { |
| mbed_official | 489:119543c9f674 | 444 | /* Copy ESR for error handling purposes */ |
| mbed_official | 489:119543c9f674 | 445 | hcec->ErrorCode = READ_BIT(hcec->Instance->ESR, CEC_ESR_ALL_ERROR); |
| mbed_official | 489:119543c9f674 | 446 | |
| mbed_official | 489:119543c9f674 | 447 | /* Acknowledgement of the error */ |
| mbed_official | 489:119543c9f674 | 448 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TERR); |
| mbed_official | 489:119543c9f674 | 449 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RERR); |
| mbed_official | 489:119543c9f674 | 450 | |
| mbed_official | 489:119543c9f674 | 451 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 452 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 453 | return HAL_ERROR; |
| mbed_official | 489:119543c9f674 | 454 | } |
| mbed_official | 489:119543c9f674 | 455 | |
| mbed_official | 489:119543c9f674 | 456 | /* Acknowledge successful completion by writing 0x00 */ |
| mbed_official | 489:119543c9f674 | 457 | MODIFY_REG(hcec->Instance->CSR, CEC_FLAG_TRANSMIT_MASK, 0x00); |
| mbed_official | 489:119543c9f674 | 458 | |
| mbed_official | 489:119543c9f674 | 459 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 460 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 461 | |
| mbed_official | 489:119543c9f674 | 462 | return HAL_OK; |
| mbed_official | 489:119543c9f674 | 463 | } |
| mbed_official | 489:119543c9f674 | 464 | else |
| mbed_official | 489:119543c9f674 | 465 | { |
| mbed_official | 489:119543c9f674 | 466 | return HAL_BUSY; |
| mbed_official | 489:119543c9f674 | 467 | } |
| mbed_official | 489:119543c9f674 | 468 | } |
| mbed_official | 489:119543c9f674 | 469 | |
| mbed_official | 489:119543c9f674 | 470 | /** |
| mbed_official | 489:119543c9f674 | 471 | * @brief Receive data in blocking mode. |
| mbed_official | 489:119543c9f674 | 472 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 473 | * @param pData: pointer to received data buffer. |
| mbed_official | 489:119543c9f674 | 474 | * @param Timeout: Timeout duration. |
| mbed_official | 489:119543c9f674 | 475 | * @note The received data size is not known beforehand, the latter is known |
| mbed_official | 489:119543c9f674 | 476 | * when the reception is complete and is stored in hcec->RxXferSize. |
| mbed_official | 489:119543c9f674 | 477 | * hcec->RxXferSize is the sum of opcodes + operands (0 to 14 operands max). |
| mbed_official | 489:119543c9f674 | 478 | * If only a header is received, hcec->RxXferSize = 0 |
| mbed_official | 489:119543c9f674 | 479 | * @retval HAL status |
| mbed_official | 489:119543c9f674 | 480 | */ |
| mbed_official | 489:119543c9f674 | 481 | HAL_StatusTypeDef HAL_CEC_Receive(CEC_HandleTypeDef *hcec, uint8_t *pData, uint32_t Timeout) |
| mbed_official | 489:119543c9f674 | 482 | { |
| mbed_official | 489:119543c9f674 | 483 | uint32_t temp = 0; |
| mbed_official | 489:119543c9f674 | 484 | uint32_t tickstart = 0; |
| mbed_official | 489:119543c9f674 | 485 | |
| mbed_official | 489:119543c9f674 | 486 | if(hcec->State == HAL_CEC_STATE_READY) |
| mbed_official | 489:119543c9f674 | 487 | { |
| mbed_official | 489:119543c9f674 | 488 | if(pData == NULL) |
| mbed_official | 489:119543c9f674 | 489 | { |
| mbed_official | 489:119543c9f674 | 490 | return HAL_ERROR; |
| mbed_official | 489:119543c9f674 | 491 | } |
| mbed_official | 489:119543c9f674 | 492 | |
| mbed_official | 489:119543c9f674 | 493 | /* When a ping is received, RxXferSize is 0*/ |
| mbed_official | 489:119543c9f674 | 494 | /* When a message is received, RxXferSize contains the number of received bytes */ |
| mbed_official | 489:119543c9f674 | 495 | hcec->RxXferSize = CEC_RXXFERSIZE_INITIALIZE; |
| mbed_official | 489:119543c9f674 | 496 | |
| mbed_official | 489:119543c9f674 | 497 | /* Process Locked */ |
| mbed_official | 489:119543c9f674 | 498 | __HAL_LOCK(hcec); |
| mbed_official | 489:119543c9f674 | 499 | |
| mbed_official | 489:119543c9f674 | 500 | hcec->ErrorCode = HAL_CEC_ERROR_NONE; |
| mbed_official | 489:119543c9f674 | 501 | |
| mbed_official | 489:119543c9f674 | 502 | /* Continue the reception until the End Of Message is received (CEC_FLAG_REOM) */ |
| mbed_official | 489:119543c9f674 | 503 | do |
| mbed_official | 489:119543c9f674 | 504 | { |
| mbed_official | 489:119543c9f674 | 505 | /* Timeout handling */ |
| mbed_official | 489:119543c9f674 | 506 | tickstart = HAL_GetTick(); |
| mbed_official | 489:119543c9f674 | 507 | |
| mbed_official | 489:119543c9f674 | 508 | /* Wait for next byte to be received */ |
| mbed_official | 489:119543c9f674 | 509 | while (HAL_IS_BIT_CLR(hcec->Instance->CSR, CEC_FLAG_RBTF)) |
| mbed_official | 489:119543c9f674 | 510 | { |
| mbed_official | 489:119543c9f674 | 511 | /* Timeout handling */ |
| mbed_official | 489:119543c9f674 | 512 | if(Timeout != HAL_MAX_DELAY) |
| mbed_official | 489:119543c9f674 | 513 | { |
| mbed_official | 489:119543c9f674 | 514 | if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout)) |
| mbed_official | 489:119543c9f674 | 515 | { |
| mbed_official | 489:119543c9f674 | 516 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 517 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 518 | return HAL_TIMEOUT; |
| mbed_official | 489:119543c9f674 | 519 | } |
| mbed_official | 489:119543c9f674 | 520 | } |
| mbed_official | 489:119543c9f674 | 521 | |
| mbed_official | 489:119543c9f674 | 522 | /* Check if an error occured during the reception */ |
| mbed_official | 489:119543c9f674 | 523 | if(HAL_IS_BIT_SET(hcec->Instance->CSR, CEC_FLAG_RERR)) |
| mbed_official | 489:119543c9f674 | 524 | { |
| mbed_official | 489:119543c9f674 | 525 | /* Copy ESR for error handling purposes */ |
| mbed_official | 489:119543c9f674 | 526 | hcec->ErrorCode = READ_BIT(hcec->Instance->ESR, CEC_ESR_ALL_ERROR); |
| mbed_official | 489:119543c9f674 | 527 | |
| mbed_official | 489:119543c9f674 | 528 | /* Acknowledgement of the error */ |
| mbed_official | 489:119543c9f674 | 529 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RERR); |
| mbed_official | 489:119543c9f674 | 530 | |
| mbed_official | 489:119543c9f674 | 531 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 532 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 533 | return HAL_ERROR; |
| mbed_official | 489:119543c9f674 | 534 | } |
| mbed_official | 489:119543c9f674 | 535 | } |
| mbed_official | 489:119543c9f674 | 536 | |
| mbed_official | 489:119543c9f674 | 537 | /* Keep the value of CSR register as the register is cleared during reception process */ |
| mbed_official | 489:119543c9f674 | 538 | temp = hcec->Instance->CSR; |
| mbed_official | 489:119543c9f674 | 539 | |
| mbed_official | 489:119543c9f674 | 540 | /* Read received data */ |
| mbed_official | 489:119543c9f674 | 541 | *pData++ = hcec->Instance->RXD; |
| mbed_official | 489:119543c9f674 | 542 | |
| mbed_official | 489:119543c9f674 | 543 | /* Acknowledge received byte by writing 0x00 */ |
| mbed_official | 489:119543c9f674 | 544 | CLEAR_BIT(hcec->Instance->CSR, CEC_FLAG_RECEIVE_MASK); |
| mbed_official | 489:119543c9f674 | 545 | |
| mbed_official | 489:119543c9f674 | 546 | /* Increment the number of received data */ |
| mbed_official | 489:119543c9f674 | 547 | if(hcec->RxXferSize == CEC_RXXFERSIZE_INITIALIZE) |
| mbed_official | 489:119543c9f674 | 548 | { |
| mbed_official | 489:119543c9f674 | 549 | hcec->RxXferSize = 0; |
| mbed_official | 489:119543c9f674 | 550 | } |
| mbed_official | 489:119543c9f674 | 551 | else |
| mbed_official | 489:119543c9f674 | 552 | { |
| mbed_official | 489:119543c9f674 | 553 | hcec->RxXferSize++; |
| mbed_official | 489:119543c9f674 | 554 | } |
| mbed_official | 489:119543c9f674 | 555 | |
| mbed_official | 489:119543c9f674 | 556 | }while (HAL_IS_BIT_CLR(temp, CEC_FLAG_REOM)); |
| mbed_official | 489:119543c9f674 | 557 | |
| mbed_official | 489:119543c9f674 | 558 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 559 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 560 | |
| mbed_official | 489:119543c9f674 | 561 | if(IS_CEC_MSGSIZE(hcec->RxXferSize)) |
| mbed_official | 489:119543c9f674 | 562 | { |
| mbed_official | 489:119543c9f674 | 563 | return HAL_OK; |
| mbed_official | 489:119543c9f674 | 564 | } |
| mbed_official | 489:119543c9f674 | 565 | else |
| mbed_official | 489:119543c9f674 | 566 | { |
| mbed_official | 489:119543c9f674 | 567 | return HAL_ERROR; |
| mbed_official | 489:119543c9f674 | 568 | } |
| mbed_official | 489:119543c9f674 | 569 | } |
| mbed_official | 489:119543c9f674 | 570 | else |
| mbed_official | 489:119543c9f674 | 571 | { |
| mbed_official | 489:119543c9f674 | 572 | return HAL_BUSY; |
| mbed_official | 489:119543c9f674 | 573 | } |
| mbed_official | 489:119543c9f674 | 574 | } |
| mbed_official | 489:119543c9f674 | 575 | |
| mbed_official | 489:119543c9f674 | 576 | |
| mbed_official | 489:119543c9f674 | 577 | /** |
| mbed_official | 489:119543c9f674 | 578 | * @brief Send data in interrupt mode |
| mbed_official | 489:119543c9f674 | 579 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 580 | * @param DestinationAddress: destination logical address |
| mbed_official | 489:119543c9f674 | 581 | * @param pData: pointer to input byte data buffer |
| mbed_official | 489:119543c9f674 | 582 | * @param Size: amount of data to be sent in bytes (without counting the header). |
| mbed_official | 489:119543c9f674 | 583 | * 0 means only the header is sent (ping operation). |
| mbed_official | 489:119543c9f674 | 584 | * Maximum TX size is 15 bytes (1 opcode and up to 14 operands). |
| mbed_official | 489:119543c9f674 | 585 | * @retval HAL status |
| mbed_official | 489:119543c9f674 | 586 | */ |
| mbed_official | 489:119543c9f674 | 587 | HAL_StatusTypeDef HAL_CEC_Transmit_IT(CEC_HandleTypeDef *hcec, uint8_t DestinationAddress, uint8_t *pData, uint32_t Size) |
| mbed_official | 489:119543c9f674 | 588 | { |
| mbed_official | 489:119543c9f674 | 589 | uint8_t temp = 0; |
| mbed_official | 489:119543c9f674 | 590 | uint32_t tmp_state = 0; |
| mbed_official | 489:119543c9f674 | 591 | |
| mbed_official | 489:119543c9f674 | 592 | tmp_state = hcec->State; |
| mbed_official | 489:119543c9f674 | 593 | if(((tmp_state == HAL_CEC_STATE_READY) || (tmp_state == HAL_CEC_STATE_BUSY_RX)) |
| mbed_official | 489:119543c9f674 | 594 | && (__HAL_CEC_GET_TRANSMISSION_START_FLAG(hcec) == RESET)) |
| mbed_official | 489:119543c9f674 | 595 | { |
| mbed_official | 489:119543c9f674 | 596 | |
| mbed_official | 489:119543c9f674 | 597 | /* Basic check on pData pointer */ |
| mbed_official | 489:119543c9f674 | 598 | if(((pData == NULL) && (Size > 0)) || (! IS_CEC_MSGSIZE(Size))) |
| mbed_official | 489:119543c9f674 | 599 | { |
| mbed_official | 489:119543c9f674 | 600 | return HAL_ERROR; |
| mbed_official | 489:119543c9f674 | 601 | } |
| mbed_official | 489:119543c9f674 | 602 | |
| mbed_official | 489:119543c9f674 | 603 | assert_param(IS_CEC_ADDRESS(DestinationAddress)); |
| mbed_official | 489:119543c9f674 | 604 | |
| mbed_official | 489:119543c9f674 | 605 | /* Process Locked */ |
| mbed_official | 489:119543c9f674 | 606 | __HAL_LOCK(hcec); |
| mbed_official | 489:119543c9f674 | 607 | hcec->pTxBuffPtr = pData; |
| mbed_official | 489:119543c9f674 | 608 | |
| mbed_official | 489:119543c9f674 | 609 | /* Check if a receive process is ongoing or not */ |
| mbed_official | 489:119543c9f674 | 610 | if(hcec->State == HAL_CEC_STATE_BUSY_RX) |
| mbed_official | 489:119543c9f674 | 611 | { |
| mbed_official | 489:119543c9f674 | 612 | hcec->State = HAL_CEC_STATE_BUSY_TX_RX; |
| mbed_official | 489:119543c9f674 | 613 | |
| mbed_official | 489:119543c9f674 | 614 | /* Interrupt are not enabled here because they are already enabled in the Reception process */ |
| mbed_official | 489:119543c9f674 | 615 | } |
| mbed_official | 489:119543c9f674 | 616 | else |
| mbed_official | 489:119543c9f674 | 617 | { |
| mbed_official | 489:119543c9f674 | 618 | hcec->State = HAL_CEC_STATE_BUSY_TX; |
| mbed_official | 489:119543c9f674 | 619 | |
| mbed_official | 489:119543c9f674 | 620 | /* Enable the CEC interrupt */ |
| mbed_official | 489:119543c9f674 | 621 | __HAL_CEC_ENABLE_IT(hcec, CEC_IT_IE); |
| mbed_official | 489:119543c9f674 | 622 | } |
| mbed_official | 489:119543c9f674 | 623 | |
| mbed_official | 489:119543c9f674 | 624 | hcec->ErrorCode = HAL_CEC_ERROR_NONE; |
| mbed_official | 489:119543c9f674 | 625 | |
| mbed_official | 489:119543c9f674 | 626 | /* initialize the number of bytes to send, |
| mbed_official | 489:119543c9f674 | 627 | * 0 means only one header is sent (ping operation) */ |
| mbed_official | 489:119543c9f674 | 628 | hcec->TxXferCount = Size; |
| mbed_official | 489:119543c9f674 | 629 | |
| mbed_official | 489:119543c9f674 | 630 | /* send header block */ |
| mbed_official | 489:119543c9f674 | 631 | temp = (uint8_t)((uint32_t)(hcec->Init.InitiatorAddress) << CEC_INITIATOR_LSB_POS) | DestinationAddress; |
| mbed_official | 489:119543c9f674 | 632 | hcec->Instance->TXD = temp; |
| mbed_official | 489:119543c9f674 | 633 | |
| mbed_official | 489:119543c9f674 | 634 | /* Process Unlocked */ |
| mbed_official | 489:119543c9f674 | 635 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 636 | |
| mbed_official | 489:119543c9f674 | 637 | /* case no data to be sent, sender is only pinging the system */ |
| mbed_official | 489:119543c9f674 | 638 | if (Size != 0) |
| mbed_official | 489:119543c9f674 | 639 | { |
| mbed_official | 489:119543c9f674 | 640 | /* Set TX Start of Message (TXSOM) bit */ |
| mbed_official | 489:119543c9f674 | 641 | MODIFY_REG(hcec->Instance->CSR, CEC_FLAG_TRANSMIT_MASK, CEC_FLAG_TSOM); |
| mbed_official | 489:119543c9f674 | 642 | } |
| mbed_official | 489:119543c9f674 | 643 | else |
| mbed_official | 489:119543c9f674 | 644 | { |
| mbed_official | 489:119543c9f674 | 645 | /* Send a ping command */ |
| mbed_official | 489:119543c9f674 | 646 | MODIFY_REG(hcec->Instance->CSR, CEC_FLAG_TRANSMIT_MASK, CEC_FLAG_TEOM|CEC_FLAG_TSOM); |
| mbed_official | 489:119543c9f674 | 647 | } |
| mbed_official | 489:119543c9f674 | 648 | return HAL_OK; |
| mbed_official | 489:119543c9f674 | 649 | } |
| mbed_official | 489:119543c9f674 | 650 | else |
| mbed_official | 489:119543c9f674 | 651 | { |
| mbed_official | 489:119543c9f674 | 652 | return HAL_BUSY; |
| mbed_official | 489:119543c9f674 | 653 | } |
| mbed_official | 489:119543c9f674 | 654 | } |
| mbed_official | 489:119543c9f674 | 655 | |
| mbed_official | 489:119543c9f674 | 656 | |
| mbed_official | 489:119543c9f674 | 657 | /** |
| mbed_official | 489:119543c9f674 | 658 | * @brief Receive data in interrupt mode. |
| mbed_official | 489:119543c9f674 | 659 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 660 | * @param pData: pointer to received data buffer. |
| mbed_official | 489:119543c9f674 | 661 | * @note The received data size is not known beforehand, the latter is known |
| mbed_official | 489:119543c9f674 | 662 | * when the reception is complete and is stored in hcec->RxXferSize. |
| mbed_official | 489:119543c9f674 | 663 | * hcec->RxXferSize is the sum of opcodes + operands (0 to 14 operands max). |
| mbed_official | 489:119543c9f674 | 664 | * If only a header is received, hcec->RxXferSize = 0 |
| mbed_official | 489:119543c9f674 | 665 | * @retval HAL status |
| mbed_official | 489:119543c9f674 | 666 | */ |
| mbed_official | 489:119543c9f674 | 667 | HAL_StatusTypeDef HAL_CEC_Receive_IT(CEC_HandleTypeDef *hcec, uint8_t *pData) |
| mbed_official | 489:119543c9f674 | 668 | { |
| mbed_official | 489:119543c9f674 | 669 | uint32_t tmp_state = 0; |
| mbed_official | 489:119543c9f674 | 670 | tmp_state = hcec->State; |
| mbed_official | 489:119543c9f674 | 671 | if((tmp_state == HAL_CEC_STATE_READY) || (tmp_state == HAL_CEC_STATE_BUSY_TX)) |
| mbed_official | 489:119543c9f674 | 672 | { |
| mbed_official | 489:119543c9f674 | 673 | if(pData == NULL) |
| mbed_official | 489:119543c9f674 | 674 | { |
| mbed_official | 489:119543c9f674 | 675 | return HAL_ERROR; |
| mbed_official | 489:119543c9f674 | 676 | } |
| mbed_official | 489:119543c9f674 | 677 | |
| mbed_official | 489:119543c9f674 | 678 | /* When a ping is received, RxXferSize is 0 */ |
| mbed_official | 489:119543c9f674 | 679 | /* When a message is received, RxXferSize contains the number of received bytes */ |
| mbed_official | 489:119543c9f674 | 680 | hcec->RxXferSize = CEC_RXXFERSIZE_INITIALIZE; |
| mbed_official | 489:119543c9f674 | 681 | |
| mbed_official | 489:119543c9f674 | 682 | /* Process Locked */ |
| mbed_official | 489:119543c9f674 | 683 | __HAL_LOCK(hcec); |
| mbed_official | 489:119543c9f674 | 684 | |
| mbed_official | 489:119543c9f674 | 685 | hcec->pRxBuffPtr = pData; |
| mbed_official | 489:119543c9f674 | 686 | hcec->ErrorCode = HAL_CEC_ERROR_NONE; |
| mbed_official | 489:119543c9f674 | 687 | |
| mbed_official | 489:119543c9f674 | 688 | /* Process Unlocked */ |
| mbed_official | 489:119543c9f674 | 689 | __HAL_UNLOCK(hcec); |
| mbed_official | 489:119543c9f674 | 690 | |
| mbed_official | 489:119543c9f674 | 691 | /* Check if a transmit process is ongoing or not */ |
| mbed_official | 489:119543c9f674 | 692 | if(hcec->State == HAL_CEC_STATE_BUSY_TX) |
| mbed_official | 489:119543c9f674 | 693 | { |
| mbed_official | 489:119543c9f674 | 694 | hcec->State = HAL_CEC_STATE_BUSY_TX_RX; |
| mbed_official | 489:119543c9f674 | 695 | } |
| mbed_official | 489:119543c9f674 | 696 | else |
| mbed_official | 489:119543c9f674 | 697 | { |
| mbed_official | 489:119543c9f674 | 698 | hcec->State = HAL_CEC_STATE_BUSY_RX; |
| mbed_official | 489:119543c9f674 | 699 | |
| mbed_official | 489:119543c9f674 | 700 | /* Enable CEC interrupt */ |
| mbed_official | 489:119543c9f674 | 701 | __HAL_CEC_ENABLE_IT(hcec, CEC_IT_IE); |
| mbed_official | 489:119543c9f674 | 702 | } |
| mbed_official | 489:119543c9f674 | 703 | |
| mbed_official | 489:119543c9f674 | 704 | return HAL_OK; |
| mbed_official | 489:119543c9f674 | 705 | } |
| mbed_official | 489:119543c9f674 | 706 | else |
| mbed_official | 489:119543c9f674 | 707 | { |
| mbed_official | 489:119543c9f674 | 708 | return HAL_BUSY; |
| mbed_official | 489:119543c9f674 | 709 | } |
| mbed_official | 489:119543c9f674 | 710 | } |
| mbed_official | 489:119543c9f674 | 711 | |
| mbed_official | 489:119543c9f674 | 712 | /** |
| mbed_official | 489:119543c9f674 | 713 | * @brief Get size of the received frame. |
| mbed_official | 489:119543c9f674 | 714 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 715 | * @retval Frame size |
| mbed_official | 489:119543c9f674 | 716 | */ |
| mbed_official | 489:119543c9f674 | 717 | uint32_t HAL_CEC_GetReceivedFrameSize(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 718 | { |
| mbed_official | 489:119543c9f674 | 719 | return hcec->RxXferSize; |
| mbed_official | 489:119543c9f674 | 720 | } |
| mbed_official | 489:119543c9f674 | 721 | |
| mbed_official | 489:119543c9f674 | 722 | /** |
| mbed_official | 489:119543c9f674 | 723 | * @brief This function handles CEC interrupt requests. |
| mbed_official | 489:119543c9f674 | 724 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 725 | * @retval None |
| mbed_official | 489:119543c9f674 | 726 | */ |
| mbed_official | 489:119543c9f674 | 727 | void HAL_CEC_IRQHandler(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 728 | { |
| mbed_official | 489:119543c9f674 | 729 | /* Save error status register for further error handling purposes */ |
| mbed_official | 489:119543c9f674 | 730 | hcec->ErrorCode = READ_BIT(hcec->Instance->ESR, CEC_ESR_ALL_ERROR); |
| mbed_official | 489:119543c9f674 | 731 | |
| mbed_official | 489:119543c9f674 | 732 | /* Transmit error */ |
| mbed_official | 489:119543c9f674 | 733 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TERR) != RESET)) |
| mbed_official | 489:119543c9f674 | 734 | { |
| mbed_official | 489:119543c9f674 | 735 | /* Acknowledgement of the error */ |
| mbed_official | 489:119543c9f674 | 736 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TERR); |
| mbed_official | 489:119543c9f674 | 737 | |
| mbed_official | 489:119543c9f674 | 738 | /* Check if a receive process is ongoing or not */ |
| mbed_official | 489:119543c9f674 | 739 | if(hcec->State == HAL_CEC_STATE_BUSY_TX_RX) |
| mbed_official | 489:119543c9f674 | 740 | { |
| mbed_official | 489:119543c9f674 | 741 | /* Interrupts are not disabled due to reception still ongoing */ |
| mbed_official | 489:119543c9f674 | 742 | |
| mbed_official | 489:119543c9f674 | 743 | hcec->State = HAL_CEC_STATE_BUSY_RX; |
| mbed_official | 489:119543c9f674 | 744 | } |
| mbed_official | 489:119543c9f674 | 745 | else |
| mbed_official | 489:119543c9f674 | 746 | { |
| mbed_official | 489:119543c9f674 | 747 | /* Disable the CEC Transmission Interrupts */ |
| mbed_official | 489:119543c9f674 | 748 | __HAL_CEC_DISABLE_IT(hcec, CEC_IT_IE); |
| mbed_official | 489:119543c9f674 | 749 | |
| mbed_official | 489:119543c9f674 | 750 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 751 | } |
| mbed_official | 489:119543c9f674 | 752 | } |
| mbed_official | 489:119543c9f674 | 753 | |
| mbed_official | 489:119543c9f674 | 754 | /* Receive error */ |
| mbed_official | 489:119543c9f674 | 755 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_RERR) != RESET)) |
| mbed_official | 489:119543c9f674 | 756 | { |
| mbed_official | 489:119543c9f674 | 757 | /* Acknowledgement of the error */ |
| mbed_official | 489:119543c9f674 | 758 | __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RERR); |
| mbed_official | 489:119543c9f674 | 759 | |
| mbed_official | 489:119543c9f674 | 760 | /* Check if a transmit process is ongoing or not */ |
| mbed_official | 489:119543c9f674 | 761 | if(hcec->State == HAL_CEC_STATE_BUSY_TX_RX) |
| mbed_official | 489:119543c9f674 | 762 | { |
| mbed_official | 489:119543c9f674 | 763 | /* Interrupts are not disabled due to reception still ongoing */ |
| mbed_official | 489:119543c9f674 | 764 | |
| mbed_official | 489:119543c9f674 | 765 | hcec->State = HAL_CEC_STATE_BUSY_TX; |
| mbed_official | 489:119543c9f674 | 766 | } |
| mbed_official | 489:119543c9f674 | 767 | else |
| mbed_official | 489:119543c9f674 | 768 | { |
| mbed_official | 489:119543c9f674 | 769 | /* Disable the CEC Transmission Interrupts */ |
| mbed_official | 489:119543c9f674 | 770 | __HAL_CEC_DISABLE_IT(hcec, CEC_IT_IE); |
| mbed_official | 489:119543c9f674 | 771 | |
| mbed_official | 489:119543c9f674 | 772 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 773 | } |
| mbed_official | 489:119543c9f674 | 774 | } |
| mbed_official | 489:119543c9f674 | 775 | |
| mbed_official | 489:119543c9f674 | 776 | if ((hcec->ErrorCode & CEC_ESR_ALL_ERROR) != 0) |
| mbed_official | 489:119543c9f674 | 777 | { |
| mbed_official | 489:119543c9f674 | 778 | HAL_CEC_ErrorCallback(hcec); |
| mbed_official | 489:119543c9f674 | 779 | } |
| mbed_official | 489:119543c9f674 | 780 | |
| mbed_official | 489:119543c9f674 | 781 | /* Transmit byte request or block transfer finished */ |
| mbed_official | 489:119543c9f674 | 782 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TBTRF) != RESET)) |
| mbed_official | 489:119543c9f674 | 783 | { |
| mbed_official | 489:119543c9f674 | 784 | CEC_Transmit_IT(hcec); |
| mbed_official | 489:119543c9f674 | 785 | } |
| mbed_official | 489:119543c9f674 | 786 | |
| mbed_official | 489:119543c9f674 | 787 | /* Receive byte or block transfer finished */ |
| mbed_official | 489:119543c9f674 | 788 | if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_RBTF) != RESET)) |
| mbed_official | 489:119543c9f674 | 789 | { |
| mbed_official | 489:119543c9f674 | 790 | CEC_Receive_IT(hcec); |
| mbed_official | 489:119543c9f674 | 791 | } |
| mbed_official | 489:119543c9f674 | 792 | } |
| mbed_official | 489:119543c9f674 | 793 | |
| mbed_official | 489:119543c9f674 | 794 | |
| mbed_official | 489:119543c9f674 | 795 | /** |
| mbed_official | 489:119543c9f674 | 796 | * @brief Tx Transfer completed callback |
| mbed_official | 489:119543c9f674 | 797 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 798 | * @retval None |
| mbed_official | 489:119543c9f674 | 799 | */ |
| mbed_official | 489:119543c9f674 | 800 | __weak void HAL_CEC_TxCpltCallback(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 801 | { |
| mbed_official | 489:119543c9f674 | 802 | /* NOTE : This function should not be modified, when the callback is needed, |
| mbed_official | 489:119543c9f674 | 803 | the HAL_CEC_TxCpltCallback can be implemented in the user file |
| mbed_official | 489:119543c9f674 | 804 | */ |
| mbed_official | 489:119543c9f674 | 805 | } |
| mbed_official | 489:119543c9f674 | 806 | |
| mbed_official | 489:119543c9f674 | 807 | /** |
| mbed_official | 489:119543c9f674 | 808 | * @brief Rx Transfer completed callback |
| mbed_official | 489:119543c9f674 | 809 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 810 | * @retval None |
| mbed_official | 489:119543c9f674 | 811 | */ |
| mbed_official | 489:119543c9f674 | 812 | __weak void HAL_CEC_RxCpltCallback(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 813 | { |
| mbed_official | 489:119543c9f674 | 814 | /* NOTE : This function should not be modified, when the callback is needed, |
| mbed_official | 489:119543c9f674 | 815 | the HAL_CEC_RxCpltCallback can be implemented in the user file |
| mbed_official | 489:119543c9f674 | 816 | */ |
| mbed_official | 489:119543c9f674 | 817 | } |
| mbed_official | 489:119543c9f674 | 818 | |
| mbed_official | 489:119543c9f674 | 819 | /** |
| mbed_official | 489:119543c9f674 | 820 | * @brief CEC error callbacks |
| mbed_official | 489:119543c9f674 | 821 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 822 | * @retval None |
| mbed_official | 489:119543c9f674 | 823 | */ |
| mbed_official | 489:119543c9f674 | 824 | __weak void HAL_CEC_ErrorCallback(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 825 | { |
| mbed_official | 489:119543c9f674 | 826 | /* NOTE : This function should not be modified, when the callback is needed, |
| mbed_official | 489:119543c9f674 | 827 | the HAL_CEC_ErrorCallback can be implemented in the user file |
| mbed_official | 489:119543c9f674 | 828 | */ |
| mbed_official | 489:119543c9f674 | 829 | } |
| mbed_official | 489:119543c9f674 | 830 | |
| mbed_official | 489:119543c9f674 | 831 | /** |
| mbed_official | 489:119543c9f674 | 832 | * @} |
| mbed_official | 489:119543c9f674 | 833 | */ |
| mbed_official | 489:119543c9f674 | 834 | |
| mbed_official | 489:119543c9f674 | 835 | /** @defgroup CEC_Exported_Functions_Group3 Peripheral Control functions |
| mbed_official | 489:119543c9f674 | 836 | * @brief CEC control functions |
| mbed_official | 489:119543c9f674 | 837 | * |
| mbed_official | 489:119543c9f674 | 838 | @verbatim |
| mbed_official | 489:119543c9f674 | 839 | =============================================================================== |
| mbed_official | 489:119543c9f674 | 840 | ##### Peripheral Control functions ##### |
| mbed_official | 489:119543c9f674 | 841 | =============================================================================== |
| mbed_official | 489:119543c9f674 | 842 | [..] |
| mbed_official | 489:119543c9f674 | 843 | This subsection provides a set of functions allowing to control the CEC. |
| mbed_official | 489:119543c9f674 | 844 | (+) HAL_CEC_GetState() API can be helpful to check in run-time the state of the CEC peripheral. |
| mbed_official | 489:119543c9f674 | 845 | (+) HAL_CEC_GetError() API can be helpful to get the error code of a failed transmission or reception. |
| mbed_official | 489:119543c9f674 | 846 | @endverbatim |
| mbed_official | 489:119543c9f674 | 847 | * @{ |
| mbed_official | 489:119543c9f674 | 848 | */ |
| mbed_official | 489:119543c9f674 | 849 | |
| mbed_official | 489:119543c9f674 | 850 | /** |
| mbed_official | 489:119543c9f674 | 851 | * @brief return the CEC state |
| mbed_official | 489:119543c9f674 | 852 | * @param hcec: CEC handle |
| mbed_official | 489:119543c9f674 | 853 | * @retval HAL state |
| mbed_official | 489:119543c9f674 | 854 | */ |
| mbed_official | 489:119543c9f674 | 855 | HAL_CEC_StateTypeDef HAL_CEC_GetState(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 856 | { |
| mbed_official | 489:119543c9f674 | 857 | return hcec->State; |
| mbed_official | 489:119543c9f674 | 858 | } |
| mbed_official | 489:119543c9f674 | 859 | |
| mbed_official | 489:119543c9f674 | 860 | /** |
| mbed_official | 489:119543c9f674 | 861 | * @brief Return the CEC error code |
| mbed_official | 489:119543c9f674 | 862 | * @param hcec : pointer to a CEC_HandleTypeDef structure that contains |
| mbed_official | 489:119543c9f674 | 863 | * the configuration information for the specified CEC. |
| mbed_official | 489:119543c9f674 | 864 | * @retval CEC Error Code |
| mbed_official | 489:119543c9f674 | 865 | */ |
| mbed_official | 489:119543c9f674 | 866 | uint32_t HAL_CEC_GetError(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 867 | { |
| mbed_official | 489:119543c9f674 | 868 | return hcec->ErrorCode; |
| mbed_official | 489:119543c9f674 | 869 | } |
| mbed_official | 489:119543c9f674 | 870 | |
| mbed_official | 489:119543c9f674 | 871 | /** |
| mbed_official | 489:119543c9f674 | 872 | * @} |
| mbed_official | 489:119543c9f674 | 873 | */ |
| mbed_official | 489:119543c9f674 | 874 | |
| mbed_official | 489:119543c9f674 | 875 | /** |
| mbed_official | 489:119543c9f674 | 876 | * @} |
| mbed_official | 489:119543c9f674 | 877 | */ |
| mbed_official | 489:119543c9f674 | 878 | |
| mbed_official | 489:119543c9f674 | 879 | /** @addtogroup CEC_Private_Functions |
| mbed_official | 489:119543c9f674 | 880 | * @{ |
| mbed_official | 489:119543c9f674 | 881 | */ |
| mbed_official | 489:119543c9f674 | 882 | |
| mbed_official | 489:119543c9f674 | 883 | /** |
| mbed_official | 489:119543c9f674 | 884 | * @brief Send data in interrupt mode |
| mbed_official | 489:119543c9f674 | 885 | * @param hcec: CEC handle. |
| mbed_official | 489:119543c9f674 | 886 | * Function called under interruption only, once |
| mbed_official | 489:119543c9f674 | 887 | * interruptions have been enabled by HAL_CEC_Transmit_IT() |
| mbed_official | 489:119543c9f674 | 888 | * @retval HAL status |
| mbed_official | 489:119543c9f674 | 889 | */ |
| mbed_official | 489:119543c9f674 | 890 | static HAL_StatusTypeDef CEC_Transmit_IT(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 891 | { |
| mbed_official | 489:119543c9f674 | 892 | uint32_t tmp_state = 0; |
| mbed_official | 489:119543c9f674 | 893 | |
| mbed_official | 489:119543c9f674 | 894 | tmp_state = hcec->State; |
| mbed_official | 489:119543c9f674 | 895 | /* if the IP is already busy or if there is a previous transmission |
| mbed_official | 489:119543c9f674 | 896 | already pending due to arbitration loss */ |
| mbed_official | 489:119543c9f674 | 897 | if(((tmp_state == HAL_CEC_STATE_BUSY_TX) || (tmp_state == HAL_CEC_STATE_BUSY_TX_RX)) |
| mbed_official | 489:119543c9f674 | 898 | || (__HAL_CEC_GET_TRANSMISSION_START_FLAG(hcec) != RESET)) |
| mbed_official | 489:119543c9f674 | 899 | { |
| mbed_official | 489:119543c9f674 | 900 | /* if all data have been sent */ |
| mbed_official | 489:119543c9f674 | 901 | if(hcec->TxXferCount == 0) |
| mbed_official | 489:119543c9f674 | 902 | { |
| mbed_official | 489:119543c9f674 | 903 | /* Acknowledge successful completion by writing 0x00 */ |
| mbed_official | 489:119543c9f674 | 904 | MODIFY_REG(hcec->Instance->CSR, CEC_FLAG_TRANSMIT_MASK, 0x00); |
| mbed_official | 489:119543c9f674 | 905 | |
| mbed_official | 489:119543c9f674 | 906 | /* Check if a receive process is ongoing or not */ |
| mbed_official | 489:119543c9f674 | 907 | if(hcec->State == HAL_CEC_STATE_BUSY_TX_RX) |
| mbed_official | 489:119543c9f674 | 908 | { |
| mbed_official | 489:119543c9f674 | 909 | /* Interrupts are not disabled due to reception still ongoing */ |
| mbed_official | 489:119543c9f674 | 910 | |
| mbed_official | 489:119543c9f674 | 911 | hcec->State = HAL_CEC_STATE_BUSY_RX; |
| mbed_official | 489:119543c9f674 | 912 | } |
| mbed_official | 489:119543c9f674 | 913 | else |
| mbed_official | 489:119543c9f674 | 914 | { |
| mbed_official | 489:119543c9f674 | 915 | /* Disable the CEC Transmission Interrupts */ |
| mbed_official | 489:119543c9f674 | 916 | __HAL_CEC_DISABLE_IT(hcec, CEC_IT_IE); |
| mbed_official | 489:119543c9f674 | 917 | |
| mbed_official | 489:119543c9f674 | 918 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 919 | } |
| mbed_official | 489:119543c9f674 | 920 | |
| mbed_official | 489:119543c9f674 | 921 | HAL_CEC_TxCpltCallback(hcec); |
| mbed_official | 489:119543c9f674 | 922 | |
| mbed_official | 489:119543c9f674 | 923 | return HAL_OK; |
| mbed_official | 489:119543c9f674 | 924 | } |
| mbed_official | 489:119543c9f674 | 925 | else |
| mbed_official | 489:119543c9f674 | 926 | { |
| mbed_official | 489:119543c9f674 | 927 | /* Reduce the number of bytes to transfer by one */ |
| mbed_official | 489:119543c9f674 | 928 | hcec->TxXferCount--; |
| mbed_official | 489:119543c9f674 | 929 | |
| mbed_official | 489:119543c9f674 | 930 | /* Write data to TX buffer*/ |
| mbed_official | 489:119543c9f674 | 931 | hcec->Instance->TXD = *hcec->pTxBuffPtr++; |
| mbed_official | 489:119543c9f674 | 932 | |
| mbed_official | 489:119543c9f674 | 933 | /* If this is the last byte of the ongoing transmission */ |
| mbed_official | 489:119543c9f674 | 934 | if (hcec->TxXferCount == 0) |
| mbed_official | 489:119543c9f674 | 935 | { |
| mbed_official | 489:119543c9f674 | 936 | /* Acknowledge byte request and signal end of message */ |
| mbed_official | 489:119543c9f674 | 937 | MODIFY_REG(hcec->Instance->CSR, CEC_FLAG_TRANSMIT_MASK, CEC_FLAG_TEOM); |
| mbed_official | 489:119543c9f674 | 938 | } |
| mbed_official | 489:119543c9f674 | 939 | else |
| mbed_official | 489:119543c9f674 | 940 | { |
| mbed_official | 489:119543c9f674 | 941 | /* Acknowledge byte request by writing 0x00 */ |
| mbed_official | 489:119543c9f674 | 942 | MODIFY_REG(hcec->Instance->CSR, CEC_FLAG_TRANSMIT_MASK, 0x00); |
| mbed_official | 489:119543c9f674 | 943 | } |
| mbed_official | 489:119543c9f674 | 944 | |
| mbed_official | 489:119543c9f674 | 945 | return HAL_OK; |
| mbed_official | 489:119543c9f674 | 946 | } |
| mbed_official | 489:119543c9f674 | 947 | } |
| mbed_official | 489:119543c9f674 | 948 | else |
| mbed_official | 489:119543c9f674 | 949 | { |
| mbed_official | 489:119543c9f674 | 950 | return HAL_BUSY; |
| mbed_official | 489:119543c9f674 | 951 | } |
| mbed_official | 489:119543c9f674 | 952 | } |
| mbed_official | 489:119543c9f674 | 953 | |
| mbed_official | 489:119543c9f674 | 954 | /** |
| mbed_official | 489:119543c9f674 | 955 | * @brief Receive data in interrupt mode. |
| mbed_official | 489:119543c9f674 | 956 | * @param hcec: CEC handle. |
| mbed_official | 489:119543c9f674 | 957 | * Function called under interruption only, once |
| mbed_official | 489:119543c9f674 | 958 | * interruptions have been enabled by HAL_CEC_Receive_IT() |
| mbed_official | 489:119543c9f674 | 959 | * @retval HAL status |
| mbed_official | 489:119543c9f674 | 960 | */ |
| mbed_official | 489:119543c9f674 | 961 | static HAL_StatusTypeDef CEC_Receive_IT(CEC_HandleTypeDef *hcec) |
| mbed_official | 489:119543c9f674 | 962 | { |
| mbed_official | 489:119543c9f674 | 963 | static uint32_t temp; |
| mbed_official | 489:119543c9f674 | 964 | uint32_t tmp_state = 0; |
| mbed_official | 489:119543c9f674 | 965 | |
| mbed_official | 489:119543c9f674 | 966 | tmp_state = hcec->State; |
| mbed_official | 489:119543c9f674 | 967 | if((tmp_state == HAL_CEC_STATE_BUSY_RX) || (tmp_state == HAL_CEC_STATE_BUSY_TX_RX)) |
| mbed_official | 489:119543c9f674 | 968 | { |
| mbed_official | 489:119543c9f674 | 969 | temp = hcec->Instance->CSR; |
| mbed_official | 489:119543c9f674 | 970 | |
| mbed_official | 489:119543c9f674 | 971 | /* Store received data */ |
| mbed_official | 489:119543c9f674 | 972 | *hcec->pRxBuffPtr++ = hcec->Instance->RXD; |
| mbed_official | 489:119543c9f674 | 973 | |
| mbed_official | 489:119543c9f674 | 974 | /* Acknowledge received byte by writing 0x00 */ |
| mbed_official | 489:119543c9f674 | 975 | MODIFY_REG(hcec->Instance->CSR, CEC_FLAG_RECEIVE_MASK, 0x00); |
| mbed_official | 489:119543c9f674 | 976 | |
| mbed_official | 489:119543c9f674 | 977 | /* Increment the number of received data */ |
| mbed_official | 489:119543c9f674 | 978 | if(hcec->RxXferSize == CEC_RXXFERSIZE_INITIALIZE) |
| mbed_official | 489:119543c9f674 | 979 | { |
| mbed_official | 489:119543c9f674 | 980 | hcec->RxXferSize = 0; |
| mbed_official | 489:119543c9f674 | 981 | } |
| mbed_official | 489:119543c9f674 | 982 | else |
| mbed_official | 489:119543c9f674 | 983 | { |
| mbed_official | 489:119543c9f674 | 984 | hcec->RxXferSize++; |
| mbed_official | 489:119543c9f674 | 985 | } |
| mbed_official | 489:119543c9f674 | 986 | |
| mbed_official | 489:119543c9f674 | 987 | /* If the End Of Message is reached */ |
| mbed_official | 489:119543c9f674 | 988 | if(HAL_IS_BIT_SET(temp, CEC_FLAG_REOM)) |
| mbed_official | 489:119543c9f674 | 989 | { |
| mbed_official | 489:119543c9f674 | 990 | if(hcec->State == HAL_CEC_STATE_BUSY_TX_RX) |
| mbed_official | 489:119543c9f674 | 991 | { |
| mbed_official | 489:119543c9f674 | 992 | /* Interrupts are not disabled due to transmission still ongoing */ |
| mbed_official | 489:119543c9f674 | 993 | |
| mbed_official | 489:119543c9f674 | 994 | hcec->State = HAL_CEC_STATE_BUSY_TX; |
| mbed_official | 489:119543c9f674 | 995 | } |
| mbed_official | 489:119543c9f674 | 996 | else |
| mbed_official | 489:119543c9f674 | 997 | { |
| mbed_official | 489:119543c9f674 | 998 | /* Disable the CEC Transmission Interrupts */ |
| mbed_official | 489:119543c9f674 | 999 | __HAL_CEC_DISABLE_IT(hcec, CEC_IT_IE); |
| mbed_official | 489:119543c9f674 | 1000 | |
| mbed_official | 489:119543c9f674 | 1001 | hcec->State = HAL_CEC_STATE_READY; |
| mbed_official | 489:119543c9f674 | 1002 | } |
| mbed_official | 489:119543c9f674 | 1003 | |
| mbed_official | 489:119543c9f674 | 1004 | HAL_CEC_RxCpltCallback(hcec); |
| mbed_official | 489:119543c9f674 | 1005 | |
| mbed_official | 489:119543c9f674 | 1006 | return HAL_OK; |
| mbed_official | 489:119543c9f674 | 1007 | } |
| mbed_official | 489:119543c9f674 | 1008 | else |
| mbed_official | 489:119543c9f674 | 1009 | { |
| mbed_official | 489:119543c9f674 | 1010 | return HAL_BUSY; |
| mbed_official | 489:119543c9f674 | 1011 | } |
| mbed_official | 489:119543c9f674 | 1012 | } |
| mbed_official | 489:119543c9f674 | 1013 | else |
| mbed_official | 489:119543c9f674 | 1014 | { |
| mbed_official | 489:119543c9f674 | 1015 | return HAL_BUSY; |
| mbed_official | 489:119543c9f674 | 1016 | } |
| mbed_official | 489:119543c9f674 | 1017 | } |
| mbed_official | 489:119543c9f674 | 1018 | |
| mbed_official | 489:119543c9f674 | 1019 | /** |
| mbed_official | 489:119543c9f674 | 1020 | * @} |
| mbed_official | 489:119543c9f674 | 1021 | */ |
| mbed_official | 489:119543c9f674 | 1022 | |
| mbed_official | 489:119543c9f674 | 1023 | /** |
| mbed_official | 489:119543c9f674 | 1024 | * @} |
| mbed_official | 489:119543c9f674 | 1025 | */ |
| mbed_official | 489:119543c9f674 | 1026 | |
| mbed_official | 489:119543c9f674 | 1027 | #endif /* defined(STM32F100xB) || defined(STM32F100xE) */ |
| mbed_official | 489:119543c9f674 | 1028 | |
| mbed_official | 489:119543c9f674 | 1029 | #endif /* HAL_CEC_MODULE_ENABLED */ |
| mbed_official | 489:119543c9f674 | 1030 | /** |
| mbed_official | 489:119543c9f674 | 1031 | * @} |
| mbed_official | 489:119543c9f674 | 1032 | */ |
| mbed_official | 489:119543c9f674 | 1033 | |
| mbed_official | 489:119543c9f674 | 1034 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
