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_F100RB/stm32f10x_cec.c@126:549ba18ddd81, 2014-03-19 (annotated)

Committer:
mbed_official
Date:
Wed Mar 19 16:00:09 2014 +0000
Revision:
126:549ba18ddd81
Synchronized with git revision cf8fd1cf86b0cd85131dd24a6ded21cc6fe04827



Full URL: https://github.com/mbedmicro/mbed/commit/cf8fd1cf86b0cd85131dd24a6ded21cc6fe04827/



Conflicts:

	workspace_tools/targets.py

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 126:549ba18ddd81 1 /**
mbed_official 126:549ba18ddd81 2 ******************************************************************************
mbed_official 126:549ba18ddd81 3 * @file stm32f10x_cec.c
mbed_official 126:549ba18ddd81 4 * @author MCD Application Team
mbed_official 126:549ba18ddd81 5 * @version V3.6.1
mbed_official 126:549ba18ddd81 6 * @date 05-March-2012
mbed_official 126:549ba18ddd81 7 * @brief This file provides all the CEC firmware functions.
mbed_official 126:549ba18ddd81 8 *******************************************************************************
mbed_official 126:549ba18ddd81 9 * Copyright (c) 2014, STMicroelectronics
mbed_official 126:549ba18ddd81 10 * All rights reserved.
mbed_official 126:549ba18ddd81 11 *
mbed_official 126:549ba18ddd81 12 * Redistribution and use in source and binary forms, with or without
mbed_official 126:549ba18ddd81 13 * modification, are permitted provided that the following conditions are met:
mbed_official 126:549ba18ddd81 14 *
mbed_official 126:549ba18ddd81 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 126:549ba18ddd81 16 * this list of conditions and the following disclaimer.
mbed_official 126:549ba18ddd81 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 126:549ba18ddd81 18 * this list of conditions and the following disclaimer in the documentation
mbed_official 126:549ba18ddd81 19 * and/or other materials provided with the distribution.
mbed_official 126:549ba18ddd81 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 126:549ba18ddd81 21 * may be used to endorse or promote products derived from this software
mbed_official 126:549ba18ddd81 22 * without specific prior written permission.
mbed_official 126:549ba18ddd81 23 *
mbed_official 126:549ba18ddd81 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 126:549ba18ddd81 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 126:549ba18ddd81 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 126:549ba18ddd81 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 126:549ba18ddd81 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 126:549ba18ddd81 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 126:549ba18ddd81 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 126:549ba18ddd81 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 126:549ba18ddd81 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 126:549ba18ddd81 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 126:549ba18ddd81 34 *******************************************************************************
mbed_official 126:549ba18ddd81 35 */
mbed_official 126:549ba18ddd81 36
mbed_official 126:549ba18ddd81 37 /* Includes ------------------------------------------------------------------*/
mbed_official 126:549ba18ddd81 38 #include "stm32f10x_cec.h"
mbed_official 126:549ba18ddd81 39 #include "stm32f10x_rcc.h"
mbed_official 126:549ba18ddd81 40
mbed_official 126:549ba18ddd81 41 /** @addtogroup STM32F10x_StdPeriph_Driver
mbed_official 126:549ba18ddd81 42 * @{
mbed_official 126:549ba18ddd81 43 */
mbed_official 126:549ba18ddd81 44
mbed_official 126:549ba18ddd81 45 /** @defgroup CEC
mbed_official 126:549ba18ddd81 46 * @brief CEC driver modules
mbed_official 126:549ba18ddd81 47 * @{
mbed_official 126:549ba18ddd81 48 */
mbed_official 126:549ba18ddd81 49
mbed_official 126:549ba18ddd81 50 /** @defgroup CEC_Private_TypesDefinitions
mbed_official 126:549ba18ddd81 51 * @{
mbed_official 126:549ba18ddd81 52 */
mbed_official 126:549ba18ddd81 53
mbed_official 126:549ba18ddd81 54 /**
mbed_official 126:549ba18ddd81 55 * @}
mbed_official 126:549ba18ddd81 56 */
mbed_official 126:549ba18ddd81 57
mbed_official 126:549ba18ddd81 58
mbed_official 126:549ba18ddd81 59 /** @defgroup CEC_Private_Defines
mbed_official 126:549ba18ddd81 60 * @{
mbed_official 126:549ba18ddd81 61 */
mbed_official 126:549ba18ddd81 62
mbed_official 126:549ba18ddd81 63 /* ------------ CEC registers bit address in the alias region ----------- */
mbed_official 126:549ba18ddd81 64 #define CEC_OFFSET (CEC_BASE - PERIPH_BASE)
mbed_official 126:549ba18ddd81 65
mbed_official 126:549ba18ddd81 66 /* --- CFGR Register ---*/
mbed_official 126:549ba18ddd81 67
mbed_official 126:549ba18ddd81 68 /* Alias word address of PE bit */
mbed_official 126:549ba18ddd81 69 #define CFGR_OFFSET (CEC_OFFSET + 0x00)
mbed_official 126:549ba18ddd81 70 #define PE_BitNumber 0x00
mbed_official 126:549ba18ddd81 71 #define CFGR_PE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (PE_BitNumber * 4))
mbed_official 126:549ba18ddd81 72
mbed_official 126:549ba18ddd81 73 /* Alias word address of IE bit */
mbed_official 126:549ba18ddd81 74 #define IE_BitNumber 0x01
mbed_official 126:549ba18ddd81 75 #define CFGR_IE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (IE_BitNumber * 4))
mbed_official 126:549ba18ddd81 76
mbed_official 126:549ba18ddd81 77 /* --- CSR Register ---*/
mbed_official 126:549ba18ddd81 78
mbed_official 126:549ba18ddd81 79 /* Alias word address of TSOM bit */
mbed_official 126:549ba18ddd81 80 #define CSR_OFFSET (CEC_OFFSET + 0x10)
mbed_official 126:549ba18ddd81 81 #define TSOM_BitNumber 0x00
mbed_official 126:549ba18ddd81 82 #define CSR_TSOM_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TSOM_BitNumber * 4))
mbed_official 126:549ba18ddd81 83
mbed_official 126:549ba18ddd81 84 /* Alias word address of TEOM bit */
mbed_official 126:549ba18ddd81 85 #define TEOM_BitNumber 0x01
mbed_official 126:549ba18ddd81 86 #define CSR_TEOM_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TEOM_BitNumber * 4))
mbed_official 126:549ba18ddd81 87
mbed_official 126:549ba18ddd81 88 #define CFGR_CLEAR_Mask (uint8_t)(0xF3) /* CFGR register Mask */
mbed_official 126:549ba18ddd81 89 #define FLAG_Mask ((uint32_t)0x00FFFFFF) /* CEC FLAG mask */
mbed_official 126:549ba18ddd81 90
mbed_official 126:549ba18ddd81 91 /**
mbed_official 126:549ba18ddd81 92 * @}
mbed_official 126:549ba18ddd81 93 */
mbed_official 126:549ba18ddd81 94
mbed_official 126:549ba18ddd81 95
mbed_official 126:549ba18ddd81 96 /** @defgroup CEC_Private_Macros
mbed_official 126:549ba18ddd81 97 * @{
mbed_official 126:549ba18ddd81 98 */
mbed_official 126:549ba18ddd81 99
mbed_official 126:549ba18ddd81 100 /**
mbed_official 126:549ba18ddd81 101 * @}
mbed_official 126:549ba18ddd81 102 */
mbed_official 126:549ba18ddd81 103
mbed_official 126:549ba18ddd81 104
mbed_official 126:549ba18ddd81 105 /** @defgroup CEC_Private_Variables
mbed_official 126:549ba18ddd81 106 * @{
mbed_official 126:549ba18ddd81 107 */
mbed_official 126:549ba18ddd81 108
mbed_official 126:549ba18ddd81 109 /**
mbed_official 126:549ba18ddd81 110 * @}
mbed_official 126:549ba18ddd81 111 */
mbed_official 126:549ba18ddd81 112
mbed_official 126:549ba18ddd81 113
mbed_official 126:549ba18ddd81 114 /** @defgroup CEC_Private_FunctionPrototypes
mbed_official 126:549ba18ddd81 115 * @{
mbed_official 126:549ba18ddd81 116 */
mbed_official 126:549ba18ddd81 117
mbed_official 126:549ba18ddd81 118 /**
mbed_official 126:549ba18ddd81 119 * @}
mbed_official 126:549ba18ddd81 120 */
mbed_official 126:549ba18ddd81 121
mbed_official 126:549ba18ddd81 122
mbed_official 126:549ba18ddd81 123 /** @defgroup CEC_Private_Functions
mbed_official 126:549ba18ddd81 124 * @{
mbed_official 126:549ba18ddd81 125 */
mbed_official 126:549ba18ddd81 126
mbed_official 126:549ba18ddd81 127 /**
mbed_official 126:549ba18ddd81 128 * @brief Deinitializes the CEC peripheral registers to their default reset
mbed_official 126:549ba18ddd81 129 * values.
mbed_official 126:549ba18ddd81 130 * @param None
mbed_official 126:549ba18ddd81 131 * @retval None
mbed_official 126:549ba18ddd81 132 */
mbed_official 126:549ba18ddd81 133 void CEC_DeInit(void)
mbed_official 126:549ba18ddd81 134 {
mbed_official 126:549ba18ddd81 135 /* Enable CEC reset state */
mbed_official 126:549ba18ddd81 136 RCC_APB1PeriphResetCmd(RCC_APB1Periph_CEC, ENABLE);
mbed_official 126:549ba18ddd81 137 /* Release CEC from reset state */
mbed_official 126:549ba18ddd81 138 RCC_APB1PeriphResetCmd(RCC_APB1Periph_CEC, DISABLE);
mbed_official 126:549ba18ddd81 139 }
mbed_official 126:549ba18ddd81 140
mbed_official 126:549ba18ddd81 141
mbed_official 126:549ba18ddd81 142 /**
mbed_official 126:549ba18ddd81 143 * @brief Initializes the CEC peripheral according to the specified
mbed_official 126:549ba18ddd81 144 * parameters in the CEC_InitStruct.
mbed_official 126:549ba18ddd81 145 * @param CEC_InitStruct: pointer to an CEC_InitTypeDef structure that
mbed_official 126:549ba18ddd81 146 * contains the configuration information for the specified
mbed_official 126:549ba18ddd81 147 * CEC peripheral.
mbed_official 126:549ba18ddd81 148 * @retval None
mbed_official 126:549ba18ddd81 149 */
mbed_official 126:549ba18ddd81 150 void CEC_Init(CEC_InitTypeDef* CEC_InitStruct)
mbed_official 126:549ba18ddd81 151 {
mbed_official 126:549ba18ddd81 152 uint16_t tmpreg = 0;
mbed_official 126:549ba18ddd81 153
mbed_official 126:549ba18ddd81 154 /* Check the parameters */
mbed_official 126:549ba18ddd81 155 assert_param(IS_CEC_BIT_TIMING_ERROR_MODE(CEC_InitStruct->CEC_BitTimingMode));
mbed_official 126:549ba18ddd81 156 assert_param(IS_CEC_BIT_PERIOD_ERROR_MODE(CEC_InitStruct->CEC_BitPeriodMode));
mbed_official 126:549ba18ddd81 157
mbed_official 126:549ba18ddd81 158 /*---------------------------- CEC CFGR Configuration -----------------*/
mbed_official 126:549ba18ddd81 159 /* Get the CEC CFGR value */
mbed_official 126:549ba18ddd81 160 tmpreg = CEC->CFGR;
mbed_official 126:549ba18ddd81 161
mbed_official 126:549ba18ddd81 162 /* Clear BTEM and BPEM bits */
mbed_official 126:549ba18ddd81 163 tmpreg &= CFGR_CLEAR_Mask;
mbed_official 126:549ba18ddd81 164
mbed_official 126:549ba18ddd81 165 /* Configure CEC: Bit Timing Error and Bit Period Error */
mbed_official 126:549ba18ddd81 166 tmpreg |= (uint16_t)(CEC_InitStruct->CEC_BitTimingMode | CEC_InitStruct->CEC_BitPeriodMode);
mbed_official 126:549ba18ddd81 167
mbed_official 126:549ba18ddd81 168 /* Write to CEC CFGR register*/
mbed_official 126:549ba18ddd81 169 CEC->CFGR = tmpreg;
mbed_official 126:549ba18ddd81 170
mbed_official 126:549ba18ddd81 171 }
mbed_official 126:549ba18ddd81 172
mbed_official 126:549ba18ddd81 173 /**
mbed_official 126:549ba18ddd81 174 * @brief Enables or disables the specified CEC peripheral.
mbed_official 126:549ba18ddd81 175 * @param NewState: new state of the CEC peripheral.
mbed_official 126:549ba18ddd81 176 * This parameter can be: ENABLE or DISABLE.
mbed_official 126:549ba18ddd81 177 * @retval None
mbed_official 126:549ba18ddd81 178 */
mbed_official 126:549ba18ddd81 179 void CEC_Cmd(FunctionalState NewState)
mbed_official 126:549ba18ddd81 180 {
mbed_official 126:549ba18ddd81 181 /* Check the parameters */
mbed_official 126:549ba18ddd81 182 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 126:549ba18ddd81 183
mbed_official 126:549ba18ddd81 184 *(__IO uint32_t *) CFGR_PE_BB = (uint32_t)NewState;
mbed_official 126:549ba18ddd81 185
mbed_official 126:549ba18ddd81 186 if(NewState == DISABLE)
mbed_official 126:549ba18ddd81 187 {
mbed_official 126:549ba18ddd81 188 /* Wait until the PE bit is cleared by hardware (Idle Line detected) */
mbed_official 126:549ba18ddd81 189 while((CEC->CFGR & CEC_CFGR_PE) != (uint32_t)RESET)
mbed_official 126:549ba18ddd81 190 {
mbed_official 126:549ba18ddd81 191 }
mbed_official 126:549ba18ddd81 192 }
mbed_official 126:549ba18ddd81 193 }
mbed_official 126:549ba18ddd81 194
mbed_official 126:549ba18ddd81 195 /**
mbed_official 126:549ba18ddd81 196 * @brief Enables or disables the CEC interrupt.
mbed_official 126:549ba18ddd81 197 * @param NewState: new state of the CEC interrupt.
mbed_official 126:549ba18ddd81 198 * This parameter can be: ENABLE or DISABLE.
mbed_official 126:549ba18ddd81 199 * @retval None
mbed_official 126:549ba18ddd81 200 */
mbed_official 126:549ba18ddd81 201 void CEC_ITConfig(FunctionalState NewState)
mbed_official 126:549ba18ddd81 202 {
mbed_official 126:549ba18ddd81 203 /* Check the parameters */
mbed_official 126:549ba18ddd81 204 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 126:549ba18ddd81 205
mbed_official 126:549ba18ddd81 206 *(__IO uint32_t *) CFGR_IE_BB = (uint32_t)NewState;
mbed_official 126:549ba18ddd81 207 }
mbed_official 126:549ba18ddd81 208
mbed_official 126:549ba18ddd81 209 /**
mbed_official 126:549ba18ddd81 210 * @brief Defines the Own Address of the CEC device.
mbed_official 126:549ba18ddd81 211 * @param CEC_OwnAddress: The CEC own address
mbed_official 126:549ba18ddd81 212 * @retval None
mbed_official 126:549ba18ddd81 213 */
mbed_official 126:549ba18ddd81 214 void CEC_OwnAddressConfig(uint8_t CEC_OwnAddress)
mbed_official 126:549ba18ddd81 215 {
mbed_official 126:549ba18ddd81 216 /* Check the parameters */
mbed_official 126:549ba18ddd81 217 assert_param(IS_CEC_ADDRESS(CEC_OwnAddress));
mbed_official 126:549ba18ddd81 218
mbed_official 126:549ba18ddd81 219 /* Set the CEC own address */
mbed_official 126:549ba18ddd81 220 CEC->OAR = CEC_OwnAddress;
mbed_official 126:549ba18ddd81 221 }
mbed_official 126:549ba18ddd81 222
mbed_official 126:549ba18ddd81 223 /**
mbed_official 126:549ba18ddd81 224 * @brief Sets the CEC prescaler value.
mbed_official 126:549ba18ddd81 225 * @param CEC_Prescaler: CEC prescaler new value
mbed_official 126:549ba18ddd81 226 * @retval None
mbed_official 126:549ba18ddd81 227 */
mbed_official 126:549ba18ddd81 228 void CEC_SetPrescaler(uint16_t CEC_Prescaler)
mbed_official 126:549ba18ddd81 229 {
mbed_official 126:549ba18ddd81 230 /* Check the parameters */
mbed_official 126:549ba18ddd81 231 assert_param(IS_CEC_PRESCALER(CEC_Prescaler));
mbed_official 126:549ba18ddd81 232
mbed_official 126:549ba18ddd81 233 /* Set the Prescaler value*/
mbed_official 126:549ba18ddd81 234 CEC->PRES = CEC_Prescaler;
mbed_official 126:549ba18ddd81 235 }
mbed_official 126:549ba18ddd81 236
mbed_official 126:549ba18ddd81 237 /**
mbed_official 126:549ba18ddd81 238 * @brief Transmits single data through the CEC peripheral.
mbed_official 126:549ba18ddd81 239 * @param Data: the data to transmit.
mbed_official 126:549ba18ddd81 240 * @retval None
mbed_official 126:549ba18ddd81 241 */
mbed_official 126:549ba18ddd81 242 void CEC_SendDataByte(uint8_t Data)
mbed_official 126:549ba18ddd81 243 {
mbed_official 126:549ba18ddd81 244 /* Transmit Data */
mbed_official 126:549ba18ddd81 245 CEC->TXD = Data ;
mbed_official 126:549ba18ddd81 246 }
mbed_official 126:549ba18ddd81 247
mbed_official 126:549ba18ddd81 248
mbed_official 126:549ba18ddd81 249 /**
mbed_official 126:549ba18ddd81 250 * @brief Returns the most recent received data by the CEC peripheral.
mbed_official 126:549ba18ddd81 251 * @param None
mbed_official 126:549ba18ddd81 252 * @retval The received data.
mbed_official 126:549ba18ddd81 253 */
mbed_official 126:549ba18ddd81 254 uint8_t CEC_ReceiveDataByte(void)
mbed_official 126:549ba18ddd81 255 {
mbed_official 126:549ba18ddd81 256 /* Receive Data */
mbed_official 126:549ba18ddd81 257 return (uint8_t)(CEC->RXD);
mbed_official 126:549ba18ddd81 258 }
mbed_official 126:549ba18ddd81 259
mbed_official 126:549ba18ddd81 260 /**
mbed_official 126:549ba18ddd81 261 * @brief Starts a new message.
mbed_official 126:549ba18ddd81 262 * @param None
mbed_official 126:549ba18ddd81 263 * @retval None
mbed_official 126:549ba18ddd81 264 */
mbed_official 126:549ba18ddd81 265 void CEC_StartOfMessage(void)
mbed_official 126:549ba18ddd81 266 {
mbed_official 126:549ba18ddd81 267 /* Starts of new message */
mbed_official 126:549ba18ddd81 268 *(__IO uint32_t *) CSR_TSOM_BB = (uint32_t)0x1;
mbed_official 126:549ba18ddd81 269 }
mbed_official 126:549ba18ddd81 270
mbed_official 126:549ba18ddd81 271 /**
mbed_official 126:549ba18ddd81 272 * @brief Transmits message with or without an EOM bit.
mbed_official 126:549ba18ddd81 273 * @param NewState: new state of the CEC Tx End Of Message.
mbed_official 126:549ba18ddd81 274 * This parameter can be: ENABLE or DISABLE.
mbed_official 126:549ba18ddd81 275 * @retval None
mbed_official 126:549ba18ddd81 276 */
mbed_official 126:549ba18ddd81 277 void CEC_EndOfMessageCmd(FunctionalState NewState)
mbed_official 126:549ba18ddd81 278 {
mbed_official 126:549ba18ddd81 279 /* Check the parameters */
mbed_official 126:549ba18ddd81 280 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 126:549ba18ddd81 281
mbed_official 126:549ba18ddd81 282 /* The data byte will be transmitted with or without an EOM bit*/
mbed_official 126:549ba18ddd81 283 *(__IO uint32_t *) CSR_TEOM_BB = (uint32_t)NewState;
mbed_official 126:549ba18ddd81 284 }
mbed_official 126:549ba18ddd81 285
mbed_official 126:549ba18ddd81 286 /**
mbed_official 126:549ba18ddd81 287 * @brief Gets the CEC flag status
mbed_official 126:549ba18ddd81 288 * @param CEC_FLAG: specifies the CEC flag to check.
mbed_official 126:549ba18ddd81 289 * This parameter can be one of the following values:
mbed_official 126:549ba18ddd81 290 * @arg CEC_FLAG_BTE: Bit Timing Error
mbed_official 126:549ba18ddd81 291 * @arg CEC_FLAG_BPE: Bit Period Error
mbed_official 126:549ba18ddd81 292 * @arg CEC_FLAG_RBTFE: Rx Block Transfer Finished Error
mbed_official 126:549ba18ddd81 293 * @arg CEC_FLAG_SBE: Start Bit Error
mbed_official 126:549ba18ddd81 294 * @arg CEC_FLAG_ACKE: Block Acknowledge Error
mbed_official 126:549ba18ddd81 295 * @arg CEC_FLAG_LINE: Line Error
mbed_official 126:549ba18ddd81 296 * @arg CEC_FLAG_TBTFE: Tx Block Transfer Finished Error
mbed_official 126:549ba18ddd81 297 * @arg CEC_FLAG_TEOM: Tx End Of Message
mbed_official 126:549ba18ddd81 298 * @arg CEC_FLAG_TERR: Tx Error
mbed_official 126:549ba18ddd81 299 * @arg CEC_FLAG_TBTRF: Tx Byte Transfer Request or Block Transfer Finished
mbed_official 126:549ba18ddd81 300 * @arg CEC_FLAG_RSOM: Rx Start Of Message
mbed_official 126:549ba18ddd81 301 * @arg CEC_FLAG_REOM: Rx End Of Message
mbed_official 126:549ba18ddd81 302 * @arg CEC_FLAG_RERR: Rx Error
mbed_official 126:549ba18ddd81 303 * @arg CEC_FLAG_RBTF: Rx Byte/Block Transfer Finished
mbed_official 126:549ba18ddd81 304 * @retval The new state of CEC_FLAG (SET or RESET)
mbed_official 126:549ba18ddd81 305 */
mbed_official 126:549ba18ddd81 306 FlagStatus CEC_GetFlagStatus(uint32_t CEC_FLAG)
mbed_official 126:549ba18ddd81 307 {
mbed_official 126:549ba18ddd81 308 FlagStatus bitstatus = RESET;
mbed_official 126:549ba18ddd81 309 uint32_t cecreg = 0, cecbase = 0;
mbed_official 126:549ba18ddd81 310
mbed_official 126:549ba18ddd81 311 /* Check the parameters */
mbed_official 126:549ba18ddd81 312 assert_param(IS_CEC_GET_FLAG(CEC_FLAG));
mbed_official 126:549ba18ddd81 313
mbed_official 126:549ba18ddd81 314 /* Get the CEC peripheral base address */
mbed_official 126:549ba18ddd81 315 cecbase = (uint32_t)(CEC_BASE);
mbed_official 126:549ba18ddd81 316
mbed_official 126:549ba18ddd81 317 /* Read flag register index */
mbed_official 126:549ba18ddd81 318 cecreg = CEC_FLAG >> 28;
mbed_official 126:549ba18ddd81 319
mbed_official 126:549ba18ddd81 320 /* Get bit[23:0] of the flag */
mbed_official 126:549ba18ddd81 321 CEC_FLAG &= FLAG_Mask;
mbed_official 126:549ba18ddd81 322
mbed_official 126:549ba18ddd81 323 if(cecreg != 0)
mbed_official 126:549ba18ddd81 324 {
mbed_official 126:549ba18ddd81 325 /* Flag in CEC ESR Register */
mbed_official 126:549ba18ddd81 326 CEC_FLAG = (uint32_t)(CEC_FLAG >> 16);
mbed_official 126:549ba18ddd81 327
mbed_official 126:549ba18ddd81 328 /* Get the CEC ESR register address */
mbed_official 126:549ba18ddd81 329 cecbase += 0xC;
mbed_official 126:549ba18ddd81 330 }
mbed_official 126:549ba18ddd81 331 else
mbed_official 126:549ba18ddd81 332 {
mbed_official 126:549ba18ddd81 333 /* Get the CEC CSR register address */
mbed_official 126:549ba18ddd81 334 cecbase += 0x10;
mbed_official 126:549ba18ddd81 335 }
mbed_official 126:549ba18ddd81 336
mbed_official 126:549ba18ddd81 337 if(((*(__IO uint32_t *)cecbase) & CEC_FLAG) != (uint32_t)RESET)
mbed_official 126:549ba18ddd81 338 {
mbed_official 126:549ba18ddd81 339 /* CEC_FLAG is set */
mbed_official 126:549ba18ddd81 340 bitstatus = SET;
mbed_official 126:549ba18ddd81 341 }
mbed_official 126:549ba18ddd81 342 else
mbed_official 126:549ba18ddd81 343 {
mbed_official 126:549ba18ddd81 344 /* CEC_FLAG is reset */
mbed_official 126:549ba18ddd81 345 bitstatus = RESET;
mbed_official 126:549ba18ddd81 346 }
mbed_official 126:549ba18ddd81 347
mbed_official 126:549ba18ddd81 348 /* Return the CEC_FLAG status */
mbed_official 126:549ba18ddd81 349 return bitstatus;
mbed_official 126:549ba18ddd81 350 }
mbed_official 126:549ba18ddd81 351
mbed_official 126:549ba18ddd81 352 /**
mbed_official 126:549ba18ddd81 353 * @brief Clears the CEC's pending flags.
mbed_official 126:549ba18ddd81 354 * @param CEC_FLAG: specifies the flag to clear.
mbed_official 126:549ba18ddd81 355 * This parameter can be any combination of the following values:
mbed_official 126:549ba18ddd81 356 * @arg CEC_FLAG_TERR: Tx Error
mbed_official 126:549ba18ddd81 357 * @arg CEC_FLAG_TBTRF: Tx Byte Transfer Request or Block Transfer Finished
mbed_official 126:549ba18ddd81 358 * @arg CEC_FLAG_RSOM: Rx Start Of Message
mbed_official 126:549ba18ddd81 359 * @arg CEC_FLAG_REOM: Rx End Of Message
mbed_official 126:549ba18ddd81 360 * @arg CEC_FLAG_RERR: Rx Error
mbed_official 126:549ba18ddd81 361 * @arg CEC_FLAG_RBTF: Rx Byte/Block Transfer Finished
mbed_official 126:549ba18ddd81 362 * @retval None
mbed_official 126:549ba18ddd81 363 */
mbed_official 126:549ba18ddd81 364 void CEC_ClearFlag(uint32_t CEC_FLAG)
mbed_official 126:549ba18ddd81 365 {
mbed_official 126:549ba18ddd81 366 uint32_t tmp = 0x0;
mbed_official 126:549ba18ddd81 367
mbed_official 126:549ba18ddd81 368 /* Check the parameters */
mbed_official 126:549ba18ddd81 369 assert_param(IS_CEC_CLEAR_FLAG(CEC_FLAG));
mbed_official 126:549ba18ddd81 370
mbed_official 126:549ba18ddd81 371 tmp = CEC->CSR & 0x2;
mbed_official 126:549ba18ddd81 372
mbed_official 126:549ba18ddd81 373 /* Clear the selected CEC flags */
mbed_official 126:549ba18ddd81 374 CEC->CSR &= (uint32_t)(((~(uint32_t)CEC_FLAG) & 0xFFFFFFFC) | tmp);
mbed_official 126:549ba18ddd81 375 }
mbed_official 126:549ba18ddd81 376
mbed_official 126:549ba18ddd81 377 /**
mbed_official 126:549ba18ddd81 378 * @brief Checks whether the specified CEC interrupt has occurred or not.
mbed_official 126:549ba18ddd81 379 * @param CEC_IT: specifies the CEC interrupt source to check.
mbed_official 126:549ba18ddd81 380 * This parameter can be one of the following values:
mbed_official 126:549ba18ddd81 381 * @arg CEC_IT_TERR: Tx Error
mbed_official 126:549ba18ddd81 382 * @arg CEC_IT_TBTF: Tx Block Transfer Finished
mbed_official 126:549ba18ddd81 383 * @arg CEC_IT_RERR: Rx Error
mbed_official 126:549ba18ddd81 384 * @arg CEC_IT_RBTF: Rx Block Transfer Finished
mbed_official 126:549ba18ddd81 385 * @retval The new state of CEC_IT (SET or RESET).
mbed_official 126:549ba18ddd81 386 */
mbed_official 126:549ba18ddd81 387 ITStatus CEC_GetITStatus(uint8_t CEC_IT)
mbed_official 126:549ba18ddd81 388 {
mbed_official 126:549ba18ddd81 389 ITStatus bitstatus = RESET;
mbed_official 126:549ba18ddd81 390 uint32_t enablestatus = 0;
mbed_official 126:549ba18ddd81 391
mbed_official 126:549ba18ddd81 392 /* Check the parameters */
mbed_official 126:549ba18ddd81 393 assert_param(IS_CEC_GET_IT(CEC_IT));
mbed_official 126:549ba18ddd81 394
mbed_official 126:549ba18ddd81 395 /* Get the CEC IT enable bit status */
mbed_official 126:549ba18ddd81 396 enablestatus = (CEC->CFGR & (uint8_t)CEC_CFGR_IE) ;
mbed_official 126:549ba18ddd81 397
mbed_official 126:549ba18ddd81 398 /* Check the status of the specified CEC interrupt */
mbed_official 126:549ba18ddd81 399 if (((CEC->CSR & CEC_IT) != (uint32_t)RESET) && enablestatus)
mbed_official 126:549ba18ddd81 400 {
mbed_official 126:549ba18ddd81 401 /* CEC_IT is set */
mbed_official 126:549ba18ddd81 402 bitstatus = SET;
mbed_official 126:549ba18ddd81 403 }
mbed_official 126:549ba18ddd81 404 else
mbed_official 126:549ba18ddd81 405 {
mbed_official 126:549ba18ddd81 406 /* CEC_IT is reset */
mbed_official 126:549ba18ddd81 407 bitstatus = RESET;
mbed_official 126:549ba18ddd81 408 }
mbed_official 126:549ba18ddd81 409 /* Return the CEC_IT status */
mbed_official 126:549ba18ddd81 410 return bitstatus;
mbed_official 126:549ba18ddd81 411 }
mbed_official 126:549ba18ddd81 412
mbed_official 126:549ba18ddd81 413 /**
mbed_official 126:549ba18ddd81 414 * @brief Clears the CEC's interrupt pending bits.
mbed_official 126:549ba18ddd81 415 * @param CEC_IT: specifies the CEC interrupt pending bit to clear.
mbed_official 126:549ba18ddd81 416 * This parameter can be any combination of the following values:
mbed_official 126:549ba18ddd81 417 * @arg CEC_IT_TERR: Tx Error
mbed_official 126:549ba18ddd81 418 * @arg CEC_IT_TBTF: Tx Block Transfer Finished
mbed_official 126:549ba18ddd81 419 * @arg CEC_IT_RERR: Rx Error
mbed_official 126:549ba18ddd81 420 * @arg CEC_IT_RBTF: Rx Block Transfer Finished
mbed_official 126:549ba18ddd81 421 * @retval None
mbed_official 126:549ba18ddd81 422 */
mbed_official 126:549ba18ddd81 423 void CEC_ClearITPendingBit(uint16_t CEC_IT)
mbed_official 126:549ba18ddd81 424 {
mbed_official 126:549ba18ddd81 425 uint32_t tmp = 0x0;
mbed_official 126:549ba18ddd81 426
mbed_official 126:549ba18ddd81 427 /* Check the parameters */
mbed_official 126:549ba18ddd81 428 assert_param(IS_CEC_GET_IT(CEC_IT));
mbed_official 126:549ba18ddd81 429
mbed_official 126:549ba18ddd81 430 tmp = CEC->CSR & 0x2;
mbed_official 126:549ba18ddd81 431
mbed_official 126:549ba18ddd81 432 /* Clear the selected CEC interrupt pending bits */
mbed_official 126:549ba18ddd81 433 CEC->CSR &= (uint32_t)(((~(uint32_t)CEC_IT) & 0xFFFFFFFC) | tmp);
mbed_official 126:549ba18ddd81 434 }
mbed_official 126:549ba18ddd81 435
mbed_official 126:549ba18ddd81 436 /**
mbed_official 126:549ba18ddd81 437 * @}
mbed_official 126:549ba18ddd81 438 */
mbed_official 126:549ba18ddd81 439
mbed_official 126:549ba18ddd81 440 /**
mbed_official 126:549ba18ddd81 441 * @}
mbed_official 126:549ba18ddd81 442 */
mbed_official 126:549ba18ddd81 443
mbed_official 126:549ba18ddd81 444 /**
mbed_official 126:549ba18ddd81 445 * @}
mbed_official 126:549ba18ddd81 446 */
mbed_official 126:549ba18ddd81 447
mbed_official 126:549ba18ddd81 448 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/