shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_DISCO_F051R8/stm32f0xx_cec.c@130:1dec54e4aec3, 2014-03-21 (annotated)

Committer:
mbed_official
Date:
Fri Mar 21 11:45:09 2014 +0000
Revision:
130:1dec54e4aec3
Synchronized with git revision e5c9ff6781a4e277a5a454e5a0b037f76e31739d



Full URL: https://github.com/mbedmicro/mbed/commit/e5c9ff6781a4e277a5a454e5a0b037f76e31739d/



STM32F0-Discovery (STM32F051R8) initial port

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 130:1dec54e4aec3 1 /**
mbed_official 130:1dec54e4aec3 2 ******************************************************************************
mbed_official 130:1dec54e4aec3 3 * @file stm32f0xx_cec.c
mbed_official 130:1dec54e4aec3 4 * @author MCD Application Team
mbed_official 130:1dec54e4aec3 5 * @version V1.3.0
mbed_official 130:1dec54e4aec3 6 * @date 16-January-2014
mbed_official 130:1dec54e4aec3 7 * @brief This file provides firmware functions to manage the following
mbed_official 130:1dec54e4aec3 8 * functionalities of the Consumer Electronics Control (CEC) peripheral
mbed_official 130:1dec54e4aec3 9 * applicable only on STM32F051, STM32F042 and STM32F072 devices:
mbed_official 130:1dec54e4aec3 10 * + Initialization and Configuration
mbed_official 130:1dec54e4aec3 11 * + Data transfers functions
mbed_official 130:1dec54e4aec3 12 * + Interrupts and flags management
mbed_official 130:1dec54e4aec3 13 *
mbed_official 130:1dec54e4aec3 14 * @verbatim
mbed_official 130:1dec54e4aec3 15 ==============================================================================
mbed_official 130:1dec54e4aec3 16 ##### CEC features #####
mbed_official 130:1dec54e4aec3 17 ==============================================================================
mbed_official 130:1dec54e4aec3 18 [..] This device provides some features:
mbed_official 130:1dec54e4aec3 19 (#) Supports HDMI-CEC specification 1.4.
mbed_official 130:1dec54e4aec3 20 (#) Supports two source clocks(HSI/244 or LSE).
mbed_official 130:1dec54e4aec3 21 (#) Works in stop mode(without APB clock, but with CEC clock 32KHz).
mbed_official 130:1dec54e4aec3 22 It can genarate an interrupt in the CEC clock domain that the CPU
mbed_official 130:1dec54e4aec3 23 wakes up from the low power mode.
mbed_official 130:1dec54e4aec3 24 (#) Configurable Signal Free Time before of transmission start. The
mbed_official 130:1dec54e4aec3 25 number of nominal data bit periods waited before transmission can be
mbed_official 130:1dec54e4aec3 26 ruled by Hardware or Software.
mbed_official 130:1dec54e4aec3 27 (#) Configurable Peripheral Address (multi-addressing configuration).
mbed_official 130:1dec54e4aec3 28 (#) Supports listen mode.The CEC Messages addressed to different destination
mbed_official 130:1dec54e4aec3 29 can be received without interfering with CEC bus when Listen mode option is enabled.
mbed_official 130:1dec54e4aec3 30 (#) Configurable Rx-Tolerance(Standard and Extended tolerance margin).
mbed_official 130:1dec54e4aec3 31 (#) Error detection with configurable error bit generation.
mbed_official 130:1dec54e4aec3 32 (#) Arbitration lost error in the case of two CEC devices starting at the same time.
mbed_official 130:1dec54e4aec3 33
mbed_official 130:1dec54e4aec3 34 ##### How to use this driver #####
mbed_official 130:1dec54e4aec3 35 ==============================================================================
mbed_official 130:1dec54e4aec3 36 [..] This driver provides functions to configure and program the CEC device,
mbed_official 130:1dec54e4aec3 37 follow steps below:
mbed_official 130:1dec54e4aec3 38 (#) The source clock can be configured using:
mbed_official 130:1dec54e4aec3 39 (++) RCC_CECCLKConfig(RCC_CECCLK_HSI_Div244) for HSI(Default)
mbed_official 130:1dec54e4aec3 40 (++) RCC_CECCLKConfig(RCC_CECCLK_LSE) for LSE.
mbed_official 130:1dec54e4aec3 41 (#) Enable CEC peripheral clock using RCC_APBPeriphClockCmd(RCC_APBPeriph_CEC, ENABLE).
mbed_official 130:1dec54e4aec3 42 (#) Peripherals alternate function.
mbed_official 130:1dec54e4aec3 43 (++) Connect the pin to the desired peripherals' Alternate Function (AF) using
mbed_official 130:1dec54e4aec3 44 GPIO_PinAFConfig() function.
mbed_official 130:1dec54e4aec3 45 (++) Configure the desired pin in alternate function by:
mbed_official 130:1dec54e4aec3 46 GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF.
mbed_official 130:1dec54e4aec3 47 (++) Select the type open-drain and output speed via GPIO_OType
mbed_official 130:1dec54e4aec3 48 and GPIO_Speed members.
mbed_official 130:1dec54e4aec3 49 (++) Call GPIO_Init() function.
mbed_official 130:1dec54e4aec3 50 (#) Configure the Signal Free Time, Rx Tolerance, Stop reception generation
mbed_official 130:1dec54e4aec3 51 and Bit error generation using the CEC_Init() function.
mbed_official 130:1dec54e4aec3 52 The function CEC_Init() must be called when the CEC peripheral is disabled.
mbed_official 130:1dec54e4aec3 53 (#) Configure the CEC own address by calling the fuction CEC_OwnAddressConfig().
mbed_official 130:1dec54e4aec3 54 (#) Optionally, you can configure the Listen mode using the function CEC_ListenModeCmd().
mbed_official 130:1dec54e4aec3 55 (#) Enable the NVIC and the corresponding interrupt using the function
mbed_official 130:1dec54e4aec3 56 CEC_ITConfig() if you need to use interrupt mode.
mbed_official 130:1dec54e4aec3 57 CEC_ITConfig() must be called before enabling the CEC peripheral.
mbed_official 130:1dec54e4aec3 58 (#) Enable the CEC using the CEC_Cmd() function.
mbed_official 130:1dec54e4aec3 59 (#) Charge the first data byte in the TXDR register using CEC_SendDataByte().
mbed_official 130:1dec54e4aec3 60 (#) Enable the transmission of the Byte of a CEC message using CEC_StartOfMessage()
mbed_official 130:1dec54e4aec3 61 (#) Transmit single data through the CEC peripheral using CEC_SendDataByte()
mbed_official 130:1dec54e4aec3 62 and Receive the last transmitted byte using CEC_ReceiveDataByte().
mbed_official 130:1dec54e4aec3 63 (#) Enable the CEC_EndOfMessage() in order to indicate the last byte of the message.
mbed_official 130:1dec54e4aec3 64 [..]
mbed_official 130:1dec54e4aec3 65 (@) If the listen mode is enabled, Stop reception generation and Bit error generation
mbed_official 130:1dec54e4aec3 66 must be in reset state.
mbed_official 130:1dec54e4aec3 67 (@) If the CEC message consists of only 1 byte, the function CEC_EndOfMessage()
mbed_official 130:1dec54e4aec3 68 must be called before CEC_StartOfMessage().
mbed_official 130:1dec54e4aec3 69
mbed_official 130:1dec54e4aec3 70 @endverbatim
mbed_official 130:1dec54e4aec3 71 *
mbed_official 130:1dec54e4aec3 72 ******************************************************************************
mbed_official 130:1dec54e4aec3 73 * @attention
mbed_official 130:1dec54e4aec3 74 *
mbed_official 130:1dec54e4aec3 75 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 130:1dec54e4aec3 76 *
mbed_official 130:1dec54e4aec3 77 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 130:1dec54e4aec3 78 * are permitted provided that the following conditions are met:
mbed_official 130:1dec54e4aec3 79 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 130:1dec54e4aec3 80 * this list of conditions and the following disclaimer.
mbed_official 130:1dec54e4aec3 81 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 130:1dec54e4aec3 82 * this list of conditions and the following disclaimer in the documentation
mbed_official 130:1dec54e4aec3 83 * and/or other materials provided with the distribution.
mbed_official 130:1dec54e4aec3 84 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 130:1dec54e4aec3 85 * may be used to endorse or promote products derived from this software
mbed_official 130:1dec54e4aec3 86 * without specific prior written permission.
mbed_official 130:1dec54e4aec3 87 *
mbed_official 130:1dec54e4aec3 88 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 130:1dec54e4aec3 89 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 130:1dec54e4aec3 90 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 130:1dec54e4aec3 91 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 130:1dec54e4aec3 92 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 130:1dec54e4aec3 93 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 130:1dec54e4aec3 94 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 130:1dec54e4aec3 95 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 130:1dec54e4aec3 96 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 130:1dec54e4aec3 97 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 130:1dec54e4aec3 98 *
mbed_official 130:1dec54e4aec3 99 ******************************************************************************
mbed_official 130:1dec54e4aec3 100 */
mbed_official 130:1dec54e4aec3 101
mbed_official 130:1dec54e4aec3 102 /* Includes ------------------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 103 #include "stm32f0xx_cec.h"
mbed_official 130:1dec54e4aec3 104 #include "stm32f0xx_rcc.h"
mbed_official 130:1dec54e4aec3 105
mbed_official 130:1dec54e4aec3 106 /** @addtogroup STM32F0xx_StdPeriph_Driver
mbed_official 130:1dec54e4aec3 107 * @{
mbed_official 130:1dec54e4aec3 108 */
mbed_official 130:1dec54e4aec3 109
mbed_official 130:1dec54e4aec3 110 /** @defgroup CEC
mbed_official 130:1dec54e4aec3 111 * @brief CEC driver modules
mbed_official 130:1dec54e4aec3 112 * @{
mbed_official 130:1dec54e4aec3 113 */
mbed_official 130:1dec54e4aec3 114
mbed_official 130:1dec54e4aec3 115 /* Private typedef -----------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 116 /* Private define ------------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 117 #define BROADCAST_ADDRESS ((uint32_t)0x0000F)
mbed_official 130:1dec54e4aec3 118 #define CFGR_CLEAR_MASK ((uint32_t)0x7000FE00) /* CFGR register Mask */
mbed_official 130:1dec54e4aec3 119
mbed_official 130:1dec54e4aec3 120 /* Private macro -------------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 121 /* Private variables ---------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 122 /* Private function prototypes -----------------------------------------------*/
mbed_official 130:1dec54e4aec3 123 /* Private functions ---------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 124
mbed_official 130:1dec54e4aec3 125 /** @defgroup CEC_Private_Functions
mbed_official 130:1dec54e4aec3 126 * @{
mbed_official 130:1dec54e4aec3 127 */
mbed_official 130:1dec54e4aec3 128
mbed_official 130:1dec54e4aec3 129 /** @defgroup CEC_Group1 Initialization and Configuration functions
mbed_official 130:1dec54e4aec3 130 * @brief Initialization and Configuration functions
mbed_official 130:1dec54e4aec3 131 *
mbed_official 130:1dec54e4aec3 132 @verbatim
mbed_official 130:1dec54e4aec3 133 ===============================================================================
mbed_official 130:1dec54e4aec3 134 ##### Initialization and Configuration functions #####
mbed_official 130:1dec54e4aec3 135 ===============================================================================
mbed_official 130:1dec54e4aec3 136 [..] This section provides functions allowing to initialize:
mbed_official 130:1dec54e4aec3 137 (+) CEC own addresses
mbed_official 130:1dec54e4aec3 138 (+) CEC Signal Free Time
mbed_official 130:1dec54e4aec3 139 (+) CEC Rx Tolerance
mbed_official 130:1dec54e4aec3 140 (+) CEC Stop Reception
mbed_official 130:1dec54e4aec3 141 (+) CEC Bit Rising Error
mbed_official 130:1dec54e4aec3 142 (+) CEC Long Bit Period Error
mbed_official 130:1dec54e4aec3 143 [..] This section provides also a function to configure the CEC peripheral in Listen Mode.
mbed_official 130:1dec54e4aec3 144 Messages addressed to different destination can be received when Listen mode is
mbed_official 130:1dec54e4aec3 145 enabled without interfering with CEC bus.
mbed_official 130:1dec54e4aec3 146 @endverbatim
mbed_official 130:1dec54e4aec3 147 * @{
mbed_official 130:1dec54e4aec3 148 */
mbed_official 130:1dec54e4aec3 149
mbed_official 130:1dec54e4aec3 150 /**
mbed_official 130:1dec54e4aec3 151 * @brief Deinitializes the CEC peripheral registers to their default reset values.
mbed_official 130:1dec54e4aec3 152 * @param None
mbed_official 130:1dec54e4aec3 153 * @retval None
mbed_official 130:1dec54e4aec3 154 */
mbed_official 130:1dec54e4aec3 155 void CEC_DeInit(void)
mbed_official 130:1dec54e4aec3 156 {
mbed_official 130:1dec54e4aec3 157 RCC_APB1PeriphResetCmd(RCC_APB1Periph_CEC, ENABLE);
mbed_official 130:1dec54e4aec3 158 RCC_APB1PeriphResetCmd(RCC_APB1Periph_CEC, DISABLE);
mbed_official 130:1dec54e4aec3 159 }
mbed_official 130:1dec54e4aec3 160
mbed_official 130:1dec54e4aec3 161 /**
mbed_official 130:1dec54e4aec3 162 * @brief Initializes the CEC peripheral according to the specified parameters
mbed_official 130:1dec54e4aec3 163 * in the CEC_InitStruct.
mbed_official 130:1dec54e4aec3 164 * @note The CEC parameters must be configured before enabling the CEC peripheral.
mbed_official 130:1dec54e4aec3 165 * @param CEC_InitStruct: pointer to an CEC_InitTypeDef structure that contains
mbed_official 130:1dec54e4aec3 166 * the configuration information for the specified CEC peripheral.
mbed_official 130:1dec54e4aec3 167 * @retval None
mbed_official 130:1dec54e4aec3 168 */
mbed_official 130:1dec54e4aec3 169 void CEC_Init(CEC_InitTypeDef* CEC_InitStruct)
mbed_official 130:1dec54e4aec3 170 {
mbed_official 130:1dec54e4aec3 171 uint32_t tmpreg = 0;
mbed_official 130:1dec54e4aec3 172
mbed_official 130:1dec54e4aec3 173 /* Check the parameters */
mbed_official 130:1dec54e4aec3 174 assert_param(IS_CEC_SIGNAL_FREE_TIME(CEC_InitStruct->CEC_SignalFreeTime));
mbed_official 130:1dec54e4aec3 175 assert_param(IS_CEC_RX_TOLERANCE(CEC_InitStruct->CEC_RxTolerance));
mbed_official 130:1dec54e4aec3 176 assert_param(IS_CEC_STOP_RECEPTION(CEC_InitStruct->CEC_StopReception));
mbed_official 130:1dec54e4aec3 177 assert_param(IS_CEC_BIT_RISING_ERROR(CEC_InitStruct->CEC_BitRisingError));
mbed_official 130:1dec54e4aec3 178 assert_param(IS_CEC_LONG_BIT_PERIOD_ERROR(CEC_InitStruct->CEC_LongBitPeriodError));
mbed_official 130:1dec54e4aec3 179 assert_param(IS_CEC_BDR_NO_GEN_ERROR(CEC_InitStruct->CEC_BRDNoGen));
mbed_official 130:1dec54e4aec3 180 assert_param(IS_CEC_SFT_OPTION(CEC_InitStruct->CEC_SFTOption));
mbed_official 130:1dec54e4aec3 181
mbed_official 130:1dec54e4aec3 182 /* Get the CEC CFGR value */
mbed_official 130:1dec54e4aec3 183 tmpreg = CEC->CFGR;
mbed_official 130:1dec54e4aec3 184
mbed_official 130:1dec54e4aec3 185 /* Clear CFGR bits */
mbed_official 130:1dec54e4aec3 186 tmpreg &= CFGR_CLEAR_MASK;
mbed_official 130:1dec54e4aec3 187
mbed_official 130:1dec54e4aec3 188 /* Configure the CEC peripheral */
mbed_official 130:1dec54e4aec3 189 tmpreg |= (CEC_InitStruct->CEC_SignalFreeTime | CEC_InitStruct->CEC_RxTolerance |
mbed_official 130:1dec54e4aec3 190 CEC_InitStruct->CEC_StopReception | CEC_InitStruct->CEC_BitRisingError |
mbed_official 130:1dec54e4aec3 191 CEC_InitStruct->CEC_LongBitPeriodError| CEC_InitStruct->CEC_BRDNoGen |
mbed_official 130:1dec54e4aec3 192 CEC_InitStruct->CEC_SFTOption);
mbed_official 130:1dec54e4aec3 193
mbed_official 130:1dec54e4aec3 194 /* Write to CEC CFGR register */
mbed_official 130:1dec54e4aec3 195 CEC->CFGR = tmpreg;
mbed_official 130:1dec54e4aec3 196 }
mbed_official 130:1dec54e4aec3 197
mbed_official 130:1dec54e4aec3 198 /**
mbed_official 130:1dec54e4aec3 199 * @brief Fills each CEC_InitStruct member with its default value.
mbed_official 130:1dec54e4aec3 200 * @param CEC_InitStruct: pointer to a CEC_InitTypeDef structure which will
mbed_official 130:1dec54e4aec3 201 * be initialized.
mbed_official 130:1dec54e4aec3 202 * @retval None
mbed_official 130:1dec54e4aec3 203 */
mbed_official 130:1dec54e4aec3 204 void CEC_StructInit(CEC_InitTypeDef* CEC_InitStruct)
mbed_official 130:1dec54e4aec3 205 {
mbed_official 130:1dec54e4aec3 206 CEC_InitStruct->CEC_SignalFreeTime = CEC_SignalFreeTime_Standard;
mbed_official 130:1dec54e4aec3 207 CEC_InitStruct->CEC_RxTolerance = CEC_RxTolerance_Standard;
mbed_official 130:1dec54e4aec3 208 CEC_InitStruct->CEC_StopReception = CEC_StopReception_Off;
mbed_official 130:1dec54e4aec3 209 CEC_InitStruct->CEC_BitRisingError = CEC_BitRisingError_Off;
mbed_official 130:1dec54e4aec3 210 CEC_InitStruct->CEC_LongBitPeriodError = CEC_LongBitPeriodError_Off;
mbed_official 130:1dec54e4aec3 211 CEC_InitStruct->CEC_BRDNoGen = CEC_BRDNoGen_Off;
mbed_official 130:1dec54e4aec3 212 CEC_InitStruct->CEC_SFTOption = CEC_SFTOption_Off;
mbed_official 130:1dec54e4aec3 213 }
mbed_official 130:1dec54e4aec3 214
mbed_official 130:1dec54e4aec3 215 /**
mbed_official 130:1dec54e4aec3 216 * @brief Enables or disables the CEC peripheral.
mbed_official 130:1dec54e4aec3 217 * @param NewState: new state of the CEC peripheral.
mbed_official 130:1dec54e4aec3 218 * This parameter can be: ENABLE or DISABLE.
mbed_official 130:1dec54e4aec3 219 * @retval None
mbed_official 130:1dec54e4aec3 220 */
mbed_official 130:1dec54e4aec3 221 void CEC_Cmd(FunctionalState NewState)
mbed_official 130:1dec54e4aec3 222 {
mbed_official 130:1dec54e4aec3 223 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 130:1dec54e4aec3 224
mbed_official 130:1dec54e4aec3 225 if (NewState != DISABLE)
mbed_official 130:1dec54e4aec3 226 {
mbed_official 130:1dec54e4aec3 227 /* Enable the CEC peripheral */
mbed_official 130:1dec54e4aec3 228 CEC->CR |= CEC_CR_CECEN;
mbed_official 130:1dec54e4aec3 229 }
mbed_official 130:1dec54e4aec3 230 else
mbed_official 130:1dec54e4aec3 231 {
mbed_official 130:1dec54e4aec3 232 /* Disable the CEC peripheral */
mbed_official 130:1dec54e4aec3 233 CEC->CR &= ~CEC_CR_CECEN;
mbed_official 130:1dec54e4aec3 234 }
mbed_official 130:1dec54e4aec3 235 }
mbed_official 130:1dec54e4aec3 236
mbed_official 130:1dec54e4aec3 237 /**
mbed_official 130:1dec54e4aec3 238 * @brief Enables or disables the CEC Listen Mode.
mbed_official 130:1dec54e4aec3 239 * @param NewState: new state of the Listen Mode.
mbed_official 130:1dec54e4aec3 240 * This parameter can be: ENABLE or DISABLE.
mbed_official 130:1dec54e4aec3 241 * @retval None
mbed_official 130:1dec54e4aec3 242 */
mbed_official 130:1dec54e4aec3 243 void CEC_ListenModeCmd(FunctionalState NewState)
mbed_official 130:1dec54e4aec3 244 {
mbed_official 130:1dec54e4aec3 245 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 130:1dec54e4aec3 246
mbed_official 130:1dec54e4aec3 247 if (NewState != DISABLE)
mbed_official 130:1dec54e4aec3 248 {
mbed_official 130:1dec54e4aec3 249 /* Enable the Listen Mode */
mbed_official 130:1dec54e4aec3 250 CEC->CFGR |= CEC_CFGR_LSTN;
mbed_official 130:1dec54e4aec3 251 }
mbed_official 130:1dec54e4aec3 252 else
mbed_official 130:1dec54e4aec3 253 {
mbed_official 130:1dec54e4aec3 254 /* Disable the Listen Mode */
mbed_official 130:1dec54e4aec3 255 CEC->CFGR &= ~CEC_CFGR_LSTN;
mbed_official 130:1dec54e4aec3 256 }
mbed_official 130:1dec54e4aec3 257 }
mbed_official 130:1dec54e4aec3 258
mbed_official 130:1dec54e4aec3 259 /**
mbed_official 130:1dec54e4aec3 260 * @brief Defines the Own Address of the CEC device.
mbed_official 130:1dec54e4aec3 261 * @param CEC_OwnAddress: The CEC own address.
mbed_official 130:1dec54e4aec3 262 * @retval None
mbed_official 130:1dec54e4aec3 263 */
mbed_official 130:1dec54e4aec3 264 void CEC_OwnAddressConfig(uint8_t CEC_OwnAddress)
mbed_official 130:1dec54e4aec3 265 {
mbed_official 130:1dec54e4aec3 266 uint32_t tmp =0x00;
mbed_official 130:1dec54e4aec3 267 /* Check the parameters */
mbed_official 130:1dec54e4aec3 268 assert_param(IS_CEC_ADDRESS(CEC_OwnAddress));
mbed_official 130:1dec54e4aec3 269 tmp = 1 <<(CEC_OwnAddress + 16);
mbed_official 130:1dec54e4aec3 270 /* Set the CEC own address */
mbed_official 130:1dec54e4aec3 271 CEC->CFGR |= tmp;
mbed_official 130:1dec54e4aec3 272 }
mbed_official 130:1dec54e4aec3 273
mbed_official 130:1dec54e4aec3 274 /**
mbed_official 130:1dec54e4aec3 275 * @brief Clears the Own Address of the CEC device.
mbed_official 130:1dec54e4aec3 276 * @param CEC_OwnAddress: The CEC own address.
mbed_official 130:1dec54e4aec3 277 * @retval None
mbed_official 130:1dec54e4aec3 278 */
mbed_official 130:1dec54e4aec3 279 void CEC_OwnAddressClear(void)
mbed_official 130:1dec54e4aec3 280 {
mbed_official 130:1dec54e4aec3 281 /* Set the CEC own address */
mbed_official 130:1dec54e4aec3 282 CEC->CFGR = 0x0;
mbed_official 130:1dec54e4aec3 283 }
mbed_official 130:1dec54e4aec3 284
mbed_official 130:1dec54e4aec3 285 /**
mbed_official 130:1dec54e4aec3 286 * @}
mbed_official 130:1dec54e4aec3 287 */
mbed_official 130:1dec54e4aec3 288
mbed_official 130:1dec54e4aec3 289 /** @defgroup CEC_Group2 Data transfers functions
mbed_official 130:1dec54e4aec3 290 * @brief Data transfers functions
mbed_official 130:1dec54e4aec3 291 *
mbed_official 130:1dec54e4aec3 292 @verbatim
mbed_official 130:1dec54e4aec3 293 ===============================================================================
mbed_official 130:1dec54e4aec3 294 ##### Data transfers functions #####
mbed_official 130:1dec54e4aec3 295 ===============================================================================
mbed_official 130:1dec54e4aec3 296 [..] This section provides functions allowing the CEC data transfers.The read
mbed_official 130:1dec54e4aec3 297 access of the CEC_RXDR register can be done using the CEC_ReceiveData()function
mbed_official 130:1dec54e4aec3 298 and returns the Rx buffered value. Whereas a write access to the CEC_TXDR can be
mbed_official 130:1dec54e4aec3 299 done using CEC_SendData() function.
mbed_official 130:1dec54e4aec3 300 @endverbatim
mbed_official 130:1dec54e4aec3 301 * @{
mbed_official 130:1dec54e4aec3 302 */
mbed_official 130:1dec54e4aec3 303
mbed_official 130:1dec54e4aec3 304 /**
mbed_official 130:1dec54e4aec3 305 * @brief Transmits single data through the CEC peripheral.
mbed_official 130:1dec54e4aec3 306 * @param Data: the data to transmit.
mbed_official 130:1dec54e4aec3 307 * @retval None
mbed_official 130:1dec54e4aec3 308 */
mbed_official 130:1dec54e4aec3 309 void CEC_SendData(uint8_t Data)
mbed_official 130:1dec54e4aec3 310 {
mbed_official 130:1dec54e4aec3 311 /* Transmit Data */
mbed_official 130:1dec54e4aec3 312 CEC->TXDR = Data;
mbed_official 130:1dec54e4aec3 313 }
mbed_official 130:1dec54e4aec3 314
mbed_official 130:1dec54e4aec3 315 /**
mbed_official 130:1dec54e4aec3 316 * @brief Returns the most recent received data by the CEC peripheral.
mbed_official 130:1dec54e4aec3 317 * @param None
mbed_official 130:1dec54e4aec3 318 * @retval The received data.
mbed_official 130:1dec54e4aec3 319 */
mbed_official 130:1dec54e4aec3 320 uint8_t CEC_ReceiveData(void)
mbed_official 130:1dec54e4aec3 321 {
mbed_official 130:1dec54e4aec3 322 /* Receive Data */
mbed_official 130:1dec54e4aec3 323 return (uint8_t)(CEC->RXDR);
mbed_official 130:1dec54e4aec3 324 }
mbed_official 130:1dec54e4aec3 325
mbed_official 130:1dec54e4aec3 326 /**
mbed_official 130:1dec54e4aec3 327 * @brief Starts a new message.
mbed_official 130:1dec54e4aec3 328 * @param None
mbed_official 130:1dec54e4aec3 329 * @retval None
mbed_official 130:1dec54e4aec3 330 */
mbed_official 130:1dec54e4aec3 331 void CEC_StartOfMessage(void)
mbed_official 130:1dec54e4aec3 332 {
mbed_official 130:1dec54e4aec3 333 /* Starts of new message */
mbed_official 130:1dec54e4aec3 334 CEC->CR |= CEC_CR_TXSOM;
mbed_official 130:1dec54e4aec3 335 }
mbed_official 130:1dec54e4aec3 336
mbed_official 130:1dec54e4aec3 337 /**
mbed_official 130:1dec54e4aec3 338 * @brief Transmits message with an EOM bit.
mbed_official 130:1dec54e4aec3 339 * @param None
mbed_official 130:1dec54e4aec3 340 * @retval None
mbed_official 130:1dec54e4aec3 341 */
mbed_official 130:1dec54e4aec3 342 void CEC_EndOfMessage(void)
mbed_official 130:1dec54e4aec3 343 {
mbed_official 130:1dec54e4aec3 344 /* The data byte will be transmitted with an EOM bit */
mbed_official 130:1dec54e4aec3 345 CEC->CR |= CEC_CR_TXEOM;
mbed_official 130:1dec54e4aec3 346 }
mbed_official 130:1dec54e4aec3 347
mbed_official 130:1dec54e4aec3 348 /**
mbed_official 130:1dec54e4aec3 349 * @}
mbed_official 130:1dec54e4aec3 350 */
mbed_official 130:1dec54e4aec3 351
mbed_official 130:1dec54e4aec3 352 /** @defgroup CEC_Group3 Interrupts and flags management functions
mbed_official 130:1dec54e4aec3 353 * @brief Interrupts and flags management functions
mbed_official 130:1dec54e4aec3 354 *
mbed_official 130:1dec54e4aec3 355 @verbatim
mbed_official 130:1dec54e4aec3 356 ===============================================================================
mbed_official 130:1dec54e4aec3 357 ##### Interrupts and flags management functions #####
mbed_official 130:1dec54e4aec3 358 ===============================================================================
mbed_official 130:1dec54e4aec3 359 [..] This section provides functions allowing to configure the CEC Interrupts
mbed_official 130:1dec54e4aec3 360 sources and check or clear the flags or pending bits status.
mbed_official 130:1dec54e4aec3 361 [..] The user should identify which mode will be used in his application to manage
mbed_official 130:1dec54e4aec3 362 the communication: Polling mode or Interrupt mode.
mbed_official 130:1dec54e4aec3 363
mbed_official 130:1dec54e4aec3 364 [..] In polling mode, the CEC can be managed by the following flags:
mbed_official 130:1dec54e4aec3 365 (+) CEC_FLAG_TXACKE : to indicate a missing acknowledge in transmission mode.
mbed_official 130:1dec54e4aec3 366 (+) CEC_FLAG_TXERR : to indicate an error occurs during transmission mode.
mbed_official 130:1dec54e4aec3 367 The initiator detects low impedance in the CEC line.
mbed_official 130:1dec54e4aec3 368 (+) CEC_FLAG_TXUDR : to indicate if an underrun error occurs in transmission mode.
mbed_official 130:1dec54e4aec3 369 The transmission is enabled while the software has not yet
mbed_official 130:1dec54e4aec3 370 loaded any value into the TXDR register.
mbed_official 130:1dec54e4aec3 371 (+) CEC_FLAG_TXEND : to indicate the end of successful transmission.
mbed_official 130:1dec54e4aec3 372 (+) CEC_FLAG_TXBR : to indicate the next transmission data has to be written to TXDR.
mbed_official 130:1dec54e4aec3 373 (+) CEC_FLAG_ARBLST : to indicate arbitration lost in the case of two CEC devices
mbed_official 130:1dec54e4aec3 374 starting at the same time.
mbed_official 130:1dec54e4aec3 375 (+) CEC_FLAG_RXACKE : to indicate a missing acknowledge in receive mode.
mbed_official 130:1dec54e4aec3 376 (+) CEC_FLAG_LBPE : to indicate a long bit period error generated during receive mode.
mbed_official 130:1dec54e4aec3 377 (+) CEC_FLAG_SBPE : to indicate a short bit period error generated during receive mode.
mbed_official 130:1dec54e4aec3 378 (+) CEC_FLAG_BRE : to indicate a bit rising error generated during receive mode.
mbed_official 130:1dec54e4aec3 379 (+) CEC_FLAG_RXOVR : to indicate if an overrun error occur while receiving a CEC message.
mbed_official 130:1dec54e4aec3 380 A byte is not yet received while a new byte is stored in the RXDR register.
mbed_official 130:1dec54e4aec3 381 (+) CEC_FLAG_RXEND : to indicate the end Of reception
mbed_official 130:1dec54e4aec3 382 (+) CEC_FLAG_RXBR : to indicate a new byte has been received from the CEC line and
mbed_official 130:1dec54e4aec3 383 stored into the RXDR buffer.
mbed_official 130:1dec54e4aec3 384 [..]
mbed_official 130:1dec54e4aec3 385 (@)In this Mode, it is advised to use the following functions:
mbed_official 130:1dec54e4aec3 386 FlagStatus CEC_GetFlagStatus(uint16_t CEC_FLAG);
mbed_official 130:1dec54e4aec3 387 void CEC_ClearFlag(uint16_t CEC_FLAG);
mbed_official 130:1dec54e4aec3 388
mbed_official 130:1dec54e4aec3 389 [..] In Interrupt mode, the CEC can be managed by the following interrupt sources:
mbed_official 130:1dec54e4aec3 390 (+) CEC_IT_TXACKE : to indicate a TX Missing acknowledge
mbed_official 130:1dec54e4aec3 391 (+) CEC_IT_TXACKE : to indicate a missing acknowledge in transmission mode.
mbed_official 130:1dec54e4aec3 392 (+) CEC_IT_TXERR : to indicate an error occurs during transmission mode.
mbed_official 130:1dec54e4aec3 393 The initiator detects low impedance in the CEC line.
mbed_official 130:1dec54e4aec3 394 (+) CEC_IT_TXUDR : to indicate if an underrun error occurs in transmission mode.
mbed_official 130:1dec54e4aec3 395 The transmission is enabled while the software has not yet
mbed_official 130:1dec54e4aec3 396 loaded any value into the TXDR register.
mbed_official 130:1dec54e4aec3 397 (+) CEC_IT_TXEND : to indicate the end of successful transmission.
mbed_official 130:1dec54e4aec3 398 (+) CEC_IT_TXBR : to indicate the next transmission data has to be written to TXDR register.
mbed_official 130:1dec54e4aec3 399 (+) CEC_IT_ARBLST : to indicate arbitration lost in the case of two CEC devices
mbed_official 130:1dec54e4aec3 400 starting at the same time.
mbed_official 130:1dec54e4aec3 401 (+) CEC_IT_RXACKE : to indicate a missing acknowledge in receive mode.
mbed_official 130:1dec54e4aec3 402 (+) CEC_IT_LBPE : to indicate a long bit period error generated during receive mode.
mbed_official 130:1dec54e4aec3 403 (+) CEC_IT_SBPE : to indicate a short bit period error generated during receive mode.
mbed_official 130:1dec54e4aec3 404 (+) CEC_IT_BRE : to indicate a bit rising error generated during receive mode.
mbed_official 130:1dec54e4aec3 405 (+) CEC_IT_RXOVR : to indicate if an overrun error occur while receiving a CEC message.
mbed_official 130:1dec54e4aec3 406 A byte is not yet received while a new byte is stored in the RXDR register.
mbed_official 130:1dec54e4aec3 407 (+) CEC_IT_RXEND : to indicate the end Of reception
mbed_official 130:1dec54e4aec3 408 (+) CEC_IT_RXBR : to indicate a new byte has been received from the CEC line and
mbed_official 130:1dec54e4aec3 409 stored into the RXDR buffer.
mbed_official 130:1dec54e4aec3 410 [..]
mbed_official 130:1dec54e4aec3 411 (@)In this Mode it is advised to use the following functions:
mbed_official 130:1dec54e4aec3 412 void CEC_ITConfig( uint16_t CEC_IT, FunctionalState NewState);
mbed_official 130:1dec54e4aec3 413 ITStatus CEC_GetITStatus(uint16_t CEC_IT);
mbed_official 130:1dec54e4aec3 414 void CEC_ClearITPendingBit(uint16_t CEC_IT);
mbed_official 130:1dec54e4aec3 415
mbed_official 130:1dec54e4aec3 416
mbed_official 130:1dec54e4aec3 417 @endverbatim
mbed_official 130:1dec54e4aec3 418 * @{
mbed_official 130:1dec54e4aec3 419 */
mbed_official 130:1dec54e4aec3 420
mbed_official 130:1dec54e4aec3 421 /**
mbed_official 130:1dec54e4aec3 422 * @brief Enables or disables the selected CEC interrupts.
mbed_official 130:1dec54e4aec3 423 * @param CEC_IT: specifies the CEC interrupt source to be enabled.
mbed_official 130:1dec54e4aec3 424 * This parameter can be any combination of the following values:
mbed_official 130:1dec54e4aec3 425 * @arg CEC_IT_TXACKE: Tx Missing acknowledge Error
mbed_official 130:1dec54e4aec3 426 * @arg CEC_IT_TXERR: Tx Error.
mbed_official 130:1dec54e4aec3 427 * @arg CEC_IT_TXUDR: Tx-Buffer Underrun.
mbed_official 130:1dec54e4aec3 428 * @arg CEC_IT_TXEND: End of Transmission (successful transmission of the last byte).
mbed_official 130:1dec54e4aec3 429 * @arg CEC_IT_TXBR: Tx-Byte Request.
mbed_official 130:1dec54e4aec3 430 * @arg CEC_IT_ARBLST: Arbitration Lost
mbed_official 130:1dec54e4aec3 431 * @arg CEC_IT_RXACKE: Rx-Missing Acknowledge
mbed_official 130:1dec54e4aec3 432 * @arg CEC_IT_LBPE: Rx Long period Error
mbed_official 130:1dec54e4aec3 433 * @arg CEC_IT_SBPE: Rx Short period Error
mbed_official 130:1dec54e4aec3 434 * @arg CEC_IT_BRE: Rx Bit Rising Error
mbed_official 130:1dec54e4aec3 435 * @arg CEC_IT_RXOVR: Rx Overrun.
mbed_official 130:1dec54e4aec3 436 * @arg CEC_IT_RXEND: End Of Reception
mbed_official 130:1dec54e4aec3 437 * @arg CEC_IT_RXBR: Rx-Byte Received
mbed_official 130:1dec54e4aec3 438 * @param NewState: new state of the selected CEC interrupts.
mbed_official 130:1dec54e4aec3 439 * This parameter can be: ENABLE or DISABLE.
mbed_official 130:1dec54e4aec3 440 * @retval None
mbed_official 130:1dec54e4aec3 441 */
mbed_official 130:1dec54e4aec3 442 void CEC_ITConfig(uint16_t CEC_IT, FunctionalState NewState)
mbed_official 130:1dec54e4aec3 443 {
mbed_official 130:1dec54e4aec3 444 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 130:1dec54e4aec3 445 assert_param(IS_CEC_IT(CEC_IT));
mbed_official 130:1dec54e4aec3 446
mbed_official 130:1dec54e4aec3 447 if (NewState != DISABLE)
mbed_official 130:1dec54e4aec3 448 {
mbed_official 130:1dec54e4aec3 449 /* Enable the selected CEC interrupt */
mbed_official 130:1dec54e4aec3 450 CEC->IER |= CEC_IT;
mbed_official 130:1dec54e4aec3 451 }
mbed_official 130:1dec54e4aec3 452 else
mbed_official 130:1dec54e4aec3 453 {
mbed_official 130:1dec54e4aec3 454 CEC_IT =~CEC_IT;
mbed_official 130:1dec54e4aec3 455 /* Disable the selected CEC interrupt */
mbed_official 130:1dec54e4aec3 456 CEC->IER &= CEC_IT;
mbed_official 130:1dec54e4aec3 457 }
mbed_official 130:1dec54e4aec3 458 }
mbed_official 130:1dec54e4aec3 459
mbed_official 130:1dec54e4aec3 460 /**
mbed_official 130:1dec54e4aec3 461 * @brief Gets the CEC flag status.
mbed_official 130:1dec54e4aec3 462 * @param CEC_FLAG: specifies the CEC flag to check.
mbed_official 130:1dec54e4aec3 463 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 464 * @arg CEC_FLAG_TXACKE: Tx Missing acknowledge Error
mbed_official 130:1dec54e4aec3 465 * @arg CEC_FLAG_TXERR: Tx Error.
mbed_official 130:1dec54e4aec3 466 * @arg CEC_FLAG_TXUDR: Tx-Buffer Underrun.
mbed_official 130:1dec54e4aec3 467 * @arg CEC_FLAG_TXEND: End of transmission (successful transmission of the last byte).
mbed_official 130:1dec54e4aec3 468 * @arg CEC_FLAG_TXBR: Tx-Byte Request.
mbed_official 130:1dec54e4aec3 469 * @arg CEC_FLAG_ARBLST: Arbitration Lost
mbed_official 130:1dec54e4aec3 470 * @arg CEC_FLAG_RXACKE: Rx-Missing Acknowledge
mbed_official 130:1dec54e4aec3 471 * @arg CEC_FLAG_LBPE: Rx Long period Error
mbed_official 130:1dec54e4aec3 472 * @arg CEC_FLAG_SBPE: Rx Short period Error
mbed_official 130:1dec54e4aec3 473 * @arg CEC_FLAG_BRE: Rx Bit Rissing Error
mbed_official 130:1dec54e4aec3 474 * @arg CEC_FLAG_RXOVR: Rx Overrun.
mbed_official 130:1dec54e4aec3 475 * @arg CEC_FLAG_RXEND: End Of Reception.
mbed_official 130:1dec54e4aec3 476 * @arg CEC_FLAG_RXBR: Rx-Byte Received.
mbed_official 130:1dec54e4aec3 477 * @retval The new state of CEC_FLAG (SET or RESET)
mbed_official 130:1dec54e4aec3 478 */
mbed_official 130:1dec54e4aec3 479 FlagStatus CEC_GetFlagStatus(uint16_t CEC_FLAG)
mbed_official 130:1dec54e4aec3 480 {
mbed_official 130:1dec54e4aec3 481 FlagStatus bitstatus = RESET;
mbed_official 130:1dec54e4aec3 482
mbed_official 130:1dec54e4aec3 483 assert_param(IS_CEC_GET_FLAG(CEC_FLAG));
mbed_official 130:1dec54e4aec3 484
mbed_official 130:1dec54e4aec3 485 /* Check the status of the specified CEC flag */
mbed_official 130:1dec54e4aec3 486 if ((CEC->ISR & CEC_FLAG) != (uint16_t)RESET)
mbed_official 130:1dec54e4aec3 487 {
mbed_official 130:1dec54e4aec3 488 /* CEC flag is set */
mbed_official 130:1dec54e4aec3 489 bitstatus = SET;
mbed_official 130:1dec54e4aec3 490 }
mbed_official 130:1dec54e4aec3 491 else
mbed_official 130:1dec54e4aec3 492 {
mbed_official 130:1dec54e4aec3 493 /* CEC flag is reset */
mbed_official 130:1dec54e4aec3 494 bitstatus = RESET;
mbed_official 130:1dec54e4aec3 495 }
mbed_official 130:1dec54e4aec3 496
mbed_official 130:1dec54e4aec3 497 /* Return the CEC flag status */
mbed_official 130:1dec54e4aec3 498 return bitstatus;
mbed_official 130:1dec54e4aec3 499 }
mbed_official 130:1dec54e4aec3 500
mbed_official 130:1dec54e4aec3 501 /**
mbed_official 130:1dec54e4aec3 502 * @brief Clears the CEC's pending flags.
mbed_official 130:1dec54e4aec3 503 * @param CEC_FLAG: specifies the flag to clear.
mbed_official 130:1dec54e4aec3 504 * This parameter can be any combination of the following values:
mbed_official 130:1dec54e4aec3 505 * @arg CEC_FLAG_TXACKE: Tx Missing acknowledge Error
mbed_official 130:1dec54e4aec3 506 * @arg CEC_FLAG_TXERR: Tx Error
mbed_official 130:1dec54e4aec3 507 * @arg CEC_FLAG_TXUDR: Tx-Buffer Underrun
mbed_official 130:1dec54e4aec3 508 * @arg CEC_FLAG_TXEND: End of transmission (successful transmission of the last byte).
mbed_official 130:1dec54e4aec3 509 * @arg CEC_FLAG_TXBR: Tx-Byte Request
mbed_official 130:1dec54e4aec3 510 * @arg CEC_FLAG_ARBLST: Arbitration Lost
mbed_official 130:1dec54e4aec3 511 * @arg CEC_FLAG_RXACKE: Rx Missing Acknowledge
mbed_official 130:1dec54e4aec3 512 * @arg CEC_FLAG_LBPE: Rx Long period Error
mbed_official 130:1dec54e4aec3 513 * @arg CEC_FLAG_SBPE: Rx Short period Error
mbed_official 130:1dec54e4aec3 514 * @arg CEC_FLAG_BRE: Rx Bit Rising Error
mbed_official 130:1dec54e4aec3 515 * @arg CEC_FLAG_RXOVR: Rx Overrun
mbed_official 130:1dec54e4aec3 516 * @arg CEC_FLAG_RXEND: End Of Reception
mbed_official 130:1dec54e4aec3 517 * @arg CEC_FLAG_RXBR: Rx-Byte Received
mbed_official 130:1dec54e4aec3 518 * @retval None
mbed_official 130:1dec54e4aec3 519 */
mbed_official 130:1dec54e4aec3 520 void CEC_ClearFlag(uint32_t CEC_FLAG)
mbed_official 130:1dec54e4aec3 521 {
mbed_official 130:1dec54e4aec3 522 assert_param(IS_CEC_CLEAR_FLAG(CEC_FLAG));
mbed_official 130:1dec54e4aec3 523
mbed_official 130:1dec54e4aec3 524 /* Clear the selected CEC flag */
mbed_official 130:1dec54e4aec3 525 CEC->ISR = CEC_FLAG;
mbed_official 130:1dec54e4aec3 526 }
mbed_official 130:1dec54e4aec3 527
mbed_official 130:1dec54e4aec3 528 /**
mbed_official 130:1dec54e4aec3 529 * @brief Checks whether the specified CEC interrupt has occurred or not.
mbed_official 130:1dec54e4aec3 530 * @param CEC_IT: specifies the CEC interrupt source to check.
mbed_official 130:1dec54e4aec3 531 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 532 * @arg CEC_IT_TXACKE: Tx Missing acknowledge Error
mbed_official 130:1dec54e4aec3 533 * @arg CEC_IT_TXERR: Tx Error.
mbed_official 130:1dec54e4aec3 534 * @arg CEC_IT_TXUDR: Tx-Buffer Underrun.
mbed_official 130:1dec54e4aec3 535 * @arg CEC_IT_TXEND: End of transmission (successful transmission of the last byte).
mbed_official 130:1dec54e4aec3 536 * @arg CEC_IT_TXBR: Tx-Byte Request.
mbed_official 130:1dec54e4aec3 537 * @arg CEC_IT_ARBLST: Arbitration Lost.
mbed_official 130:1dec54e4aec3 538 * @arg CEC_IT_RXACKE: Rx-Missing Acknowledge.
mbed_official 130:1dec54e4aec3 539 * @arg CEC_IT_LBPE: Rx Long period Error.
mbed_official 130:1dec54e4aec3 540 * @arg CEC_IT_SBPE: Rx Short period Error.
mbed_official 130:1dec54e4aec3 541 * @arg CEC_IT_BRE: Rx Bit Rising Error.
mbed_official 130:1dec54e4aec3 542 * @arg CEC_IT_RXOVR: Rx Overrun.
mbed_official 130:1dec54e4aec3 543 * @arg CEC_IT_RXEND: End Of Reception.
mbed_official 130:1dec54e4aec3 544 * @arg CEC_IT_RXBR: Rx-Byte Received
mbed_official 130:1dec54e4aec3 545 * @retval The new state of CEC_IT (SET or RESET).
mbed_official 130:1dec54e4aec3 546 */
mbed_official 130:1dec54e4aec3 547 ITStatus CEC_GetITStatus(uint16_t CEC_IT)
mbed_official 130:1dec54e4aec3 548 {
mbed_official 130:1dec54e4aec3 549 ITStatus bitstatus = RESET;
mbed_official 130:1dec54e4aec3 550 uint32_t enablestatus = 0;
mbed_official 130:1dec54e4aec3 551
mbed_official 130:1dec54e4aec3 552 /* Check the parameters */
mbed_official 130:1dec54e4aec3 553 assert_param(IS_CEC_GET_IT(CEC_IT));
mbed_official 130:1dec54e4aec3 554
mbed_official 130:1dec54e4aec3 555 /* Get the CEC IT enable bit status */
mbed_official 130:1dec54e4aec3 556 enablestatus = (CEC->IER & CEC_IT);
mbed_official 130:1dec54e4aec3 557
mbed_official 130:1dec54e4aec3 558 /* Check the status of the specified CEC interrupt */
mbed_official 130:1dec54e4aec3 559 if (((CEC->ISR & CEC_IT) != (uint32_t)RESET) && enablestatus)
mbed_official 130:1dec54e4aec3 560 {
mbed_official 130:1dec54e4aec3 561 /* CEC interrupt is set */
mbed_official 130:1dec54e4aec3 562 bitstatus = SET;
mbed_official 130:1dec54e4aec3 563 }
mbed_official 130:1dec54e4aec3 564 else
mbed_official 130:1dec54e4aec3 565 {
mbed_official 130:1dec54e4aec3 566 /* CEC interrupt is reset */
mbed_official 130:1dec54e4aec3 567 bitstatus = RESET;
mbed_official 130:1dec54e4aec3 568 }
mbed_official 130:1dec54e4aec3 569
mbed_official 130:1dec54e4aec3 570 /* Return the CEC interrupt status */
mbed_official 130:1dec54e4aec3 571 return bitstatus;
mbed_official 130:1dec54e4aec3 572 }
mbed_official 130:1dec54e4aec3 573
mbed_official 130:1dec54e4aec3 574 /**
mbed_official 130:1dec54e4aec3 575 * @brief Clears the CEC's interrupt pending bits.
mbed_official 130:1dec54e4aec3 576 * @param CEC_IT: specifies the CEC interrupt pending bit to clear.
mbed_official 130:1dec54e4aec3 577 * This parameter can be any combination of the following values:
mbed_official 130:1dec54e4aec3 578 * @arg CEC_IT_TXACKE: Tx Missing acknowledge Error
mbed_official 130:1dec54e4aec3 579 * @arg CEC_IT_TXERR: Tx Error
mbed_official 130:1dec54e4aec3 580 * @arg CEC_IT_TXUDR: Tx-Buffer Underrun
mbed_official 130:1dec54e4aec3 581 * @arg CEC_IT_TXEND: End of Transmission
mbed_official 130:1dec54e4aec3 582 * @arg CEC_IT_TXBR: Tx-Byte Request
mbed_official 130:1dec54e4aec3 583 * @arg CEC_IT_ARBLST: Arbitration Lost
mbed_official 130:1dec54e4aec3 584 * @arg CEC_IT_RXACKE: Rx-Missing Acknowledge
mbed_official 130:1dec54e4aec3 585 * @arg CEC_IT_LBPE: Rx Long period Error
mbed_official 130:1dec54e4aec3 586 * @arg CEC_IT_SBPE: Rx Short period Error
mbed_official 130:1dec54e4aec3 587 * @arg CEC_IT_BRE: Rx Bit Rising Error
mbed_official 130:1dec54e4aec3 588 * @arg CEC_IT_RXOVR: Rx Overrun
mbed_official 130:1dec54e4aec3 589 * @arg CEC_IT_RXEND: End Of Reception
mbed_official 130:1dec54e4aec3 590 * @arg CEC_IT_RXBR: Rx-Byte Received
mbed_official 130:1dec54e4aec3 591 * @retval None
mbed_official 130:1dec54e4aec3 592 */
mbed_official 130:1dec54e4aec3 593 void CEC_ClearITPendingBit(uint16_t CEC_IT)
mbed_official 130:1dec54e4aec3 594 {
mbed_official 130:1dec54e4aec3 595 assert_param(IS_CEC_IT(CEC_IT));
mbed_official 130:1dec54e4aec3 596
mbed_official 130:1dec54e4aec3 597 /* Clear the selected CEC interrupt pending bits */
mbed_official 130:1dec54e4aec3 598 CEC->ISR = CEC_IT;
mbed_official 130:1dec54e4aec3 599 }
mbed_official 130:1dec54e4aec3 600
mbed_official 130:1dec54e4aec3 601 /**
mbed_official 130:1dec54e4aec3 602 * @}
mbed_official 130:1dec54e4aec3 603 */
mbed_official 130:1dec54e4aec3 604
mbed_official 130:1dec54e4aec3 605 /**
mbed_official 130:1dec54e4aec3 606 * @}
mbed_official 130:1dec54e4aec3 607 */
mbed_official 130:1dec54e4aec3 608
mbed_official 130:1dec54e4aec3 609 /**
mbed_official 130:1dec54e4aec3 610 * @}
mbed_official 130:1dec54e4aec3 611 */
mbed_official 130:1dec54e4aec3 612
mbed_official 130:1dec54e4aec3 613 /**
mbed_official 130:1dec54e4aec3 614 * @}
mbed_official 130:1dec54e4aec3 615 */
mbed_official 130:1dec54e4aec3 616
mbed_official 130:1dec54e4aec3 617 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/