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_NUCLEO_F103RB/stm32f10x_cec.c@70:c1fbde68b492, 2014-01-07 (annotated)

Committer:
mbed_official
Date:
Tue Jan 07 11:00:05 2014 +0000
Revision:
70:c1fbde68b492
Parent:
52:a51c77007319
Child:
84:f54042cbc282
Synchronized with git revision 3f438a307904431f2782db3c8fa49946b9fc1d85



Full URL: https://github.com/mbedmicro/mbed/commit/3f438a307904431f2782db3c8fa49946b9fc1d85/



[NUCLEO_F103RB] license text changed + sleep hal updated

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 52:a51c77007319 1 /**
mbed_official 52:a51c77007319 2 ******************************************************************************
mbed_official 52:a51c77007319 3 * @file stm32f10x_cec.c
mbed_official 52:a51c77007319 4 * @author MCD Application Team
mbed_official 52:a51c77007319 5 * @version V3.5.0
mbed_official 52:a51c77007319 6 * @date 11-March-2011
mbed_official 52:a51c77007319 7 * @brief This file provides all the CEC firmware functions.
mbed_official 70:c1fbde68b492 8 *******************************************************************************
mbed_official 70:c1fbde68b492 9 * Copyright (c) 2014, STMicroelectronics
mbed_official 70:c1fbde68b492 10 * All rights reserved.
mbed_official 70:c1fbde68b492 11 *
mbed_official 70:c1fbde68b492 12 * Redistribution and use in source and binary forms, with or without
mbed_official 70:c1fbde68b492 13 * modification, are permitted provided that the following conditions are met:
mbed_official 70:c1fbde68b492 14 *
mbed_official 70:c1fbde68b492 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 70:c1fbde68b492 16 * this list of conditions and the following disclaimer.
mbed_official 70:c1fbde68b492 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 70:c1fbde68b492 18 * this list of conditions and the following disclaimer in the documentation
mbed_official 70:c1fbde68b492 19 * and/or other materials provided with the distribution.
mbed_official 70:c1fbde68b492 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 70:c1fbde68b492 21 * may be used to endorse or promote products derived from this software
mbed_official 70:c1fbde68b492 22 * without specific prior written permission.
mbed_official 70:c1fbde68b492 23 *
mbed_official 70:c1fbde68b492 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 70:c1fbde68b492 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 70:c1fbde68b492 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 70:c1fbde68b492 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 70:c1fbde68b492 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 70:c1fbde68b492 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 70:c1fbde68b492 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 70:c1fbde68b492 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 70:c1fbde68b492 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 70:c1fbde68b492 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 70:c1fbde68b492 34 *******************************************************************************
mbed_official 70:c1fbde68b492 35 */
mbed_official 52:a51c77007319 36
mbed_official 52:a51c77007319 37 /* Includes ------------------------------------------------------------------*/
mbed_official 52:a51c77007319 38 #include "stm32f10x_cec.h"
mbed_official 52:a51c77007319 39 #include "stm32f10x_rcc.h"
mbed_official 52:a51c77007319 40
mbed_official 52:a51c77007319 41 /** @addtogroup STM32F10x_StdPeriph_Driver
mbed_official 52:a51c77007319 42 * @{
mbed_official 52:a51c77007319 43 */
mbed_official 52:a51c77007319 44
mbed_official 52:a51c77007319 45 /** @defgroup CEC
mbed_official 52:a51c77007319 46 * @brief CEC driver modules
mbed_official 52:a51c77007319 47 * @{
mbed_official 52:a51c77007319 48 */
mbed_official 52:a51c77007319 49
mbed_official 52:a51c77007319 50 /** @defgroup CEC_Private_TypesDefinitions
mbed_official 52:a51c77007319 51 * @{
mbed_official 52:a51c77007319 52 */
mbed_official 52:a51c77007319 53
mbed_official 52:a51c77007319 54 /**
mbed_official 52:a51c77007319 55 * @}
mbed_official 52:a51c77007319 56 */
mbed_official 52:a51c77007319 57
mbed_official 52:a51c77007319 58
mbed_official 52:a51c77007319 59 /** @defgroup CEC_Private_Defines
mbed_official 52:a51c77007319 60 * @{
mbed_official 52:a51c77007319 61 */
mbed_official 52:a51c77007319 62
mbed_official 52:a51c77007319 63 /* ------------ CEC registers bit address in the alias region ----------- */
mbed_official 52:a51c77007319 64 #define CEC_OFFSET (CEC_BASE - PERIPH_BASE)
mbed_official 52:a51c77007319 65
mbed_official 52:a51c77007319 66 /* --- CFGR Register ---*/
mbed_official 52:a51c77007319 67
mbed_official 52:a51c77007319 68 /* Alias word address of PE bit */
mbed_official 52:a51c77007319 69 #define CFGR_OFFSET (CEC_OFFSET + 0x00)
mbed_official 52:a51c77007319 70 #define PE_BitNumber 0x00
mbed_official 52:a51c77007319 71 #define CFGR_PE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (PE_BitNumber * 4))
mbed_official 52:a51c77007319 72
mbed_official 52:a51c77007319 73 /* Alias word address of IE bit */
mbed_official 52:a51c77007319 74 #define IE_BitNumber 0x01
mbed_official 52:a51c77007319 75 #define CFGR_IE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (IE_BitNumber * 4))
mbed_official 52:a51c77007319 76
mbed_official 52:a51c77007319 77 /* --- CSR Register ---*/
mbed_official 52:a51c77007319 78
mbed_official 52:a51c77007319 79 /* Alias word address of TSOM bit */
mbed_official 52:a51c77007319 80 #define CSR_OFFSET (CEC_OFFSET + 0x10)
mbed_official 52:a51c77007319 81 #define TSOM_BitNumber 0x00
mbed_official 52:a51c77007319 82 #define CSR_TSOM_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TSOM_BitNumber * 4))
mbed_official 52:a51c77007319 83
mbed_official 52:a51c77007319 84 /* Alias word address of TEOM bit */
mbed_official 52:a51c77007319 85 #define TEOM_BitNumber 0x01
mbed_official 52:a51c77007319 86 #define CSR_TEOM_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TEOM_BitNumber * 4))
mbed_official 52:a51c77007319 87
mbed_official 52:a51c77007319 88 #define CFGR_CLEAR_Mask (uint8_t)(0xF3) /* CFGR register Mask */
mbed_official 52:a51c77007319 89 #define FLAG_Mask ((uint32_t)0x00FFFFFF) /* CEC FLAG mask */
mbed_official 52:a51c77007319 90
mbed_official 52:a51c77007319 91 /**
mbed_official 52:a51c77007319 92 * @}
mbed_official 52:a51c77007319 93 */
mbed_official 52:a51c77007319 94
mbed_official 52:a51c77007319 95
mbed_official 52:a51c77007319 96 /** @defgroup CEC_Private_Macros
mbed_official 52:a51c77007319 97 * @{
mbed_official 52:a51c77007319 98 */
mbed_official 52:a51c77007319 99
mbed_official 52:a51c77007319 100 /**
mbed_official 52:a51c77007319 101 * @}
mbed_official 52:a51c77007319 102 */
mbed_official 52:a51c77007319 103
mbed_official 52:a51c77007319 104
mbed_official 52:a51c77007319 105 /** @defgroup CEC_Private_Variables
mbed_official 52:a51c77007319 106 * @{
mbed_official 52:a51c77007319 107 */
mbed_official 52:a51c77007319 108
mbed_official 52:a51c77007319 109 /**
mbed_official 52:a51c77007319 110 * @}
mbed_official 52:a51c77007319 111 */
mbed_official 52:a51c77007319 112
mbed_official 52:a51c77007319 113
mbed_official 52:a51c77007319 114 /** @defgroup CEC_Private_FunctionPrototypes
mbed_official 52:a51c77007319 115 * @{
mbed_official 52:a51c77007319 116 */
mbed_official 52:a51c77007319 117
mbed_official 52:a51c77007319 118 /**
mbed_official 52:a51c77007319 119 * @}
mbed_official 52:a51c77007319 120 */
mbed_official 52:a51c77007319 121
mbed_official 52:a51c77007319 122
mbed_official 52:a51c77007319 123 /** @defgroup CEC_Private_Functions
mbed_official 52:a51c77007319 124 * @{
mbed_official 52:a51c77007319 125 */
mbed_official 52:a51c77007319 126
mbed_official 52:a51c77007319 127 /**
mbed_official 52:a51c77007319 128 * @brief Deinitializes the CEC peripheral registers to their default reset
mbed_official 52:a51c77007319 129 * values.
mbed_official 52:a51c77007319 130 * @param None
mbed_official 52:a51c77007319 131 * @retval None
mbed_official 52:a51c77007319 132 */
mbed_official 52:a51c77007319 133 void CEC_DeInit(void)
mbed_official 52:a51c77007319 134 {
mbed_official 52:a51c77007319 135 /* Enable CEC reset state */
mbed_official 52:a51c77007319 136 RCC_APB1PeriphResetCmd(RCC_APB1Periph_CEC, ENABLE);
mbed_official 52:a51c77007319 137 /* Release CEC from reset state */
mbed_official 52:a51c77007319 138 RCC_APB1PeriphResetCmd(RCC_APB1Periph_CEC, DISABLE);
mbed_official 52:a51c77007319 139 }
mbed_official 52:a51c77007319 140
mbed_official 52:a51c77007319 141
mbed_official 52:a51c77007319 142 /**
mbed_official 52:a51c77007319 143 * @brief Initializes the CEC peripheral according to the specified
mbed_official 52:a51c77007319 144 * parameters in the CEC_InitStruct.
mbed_official 52:a51c77007319 145 * @param CEC_InitStruct: pointer to an CEC_InitTypeDef structure that
mbed_official 52:a51c77007319 146 * contains the configuration information for the specified
mbed_official 52:a51c77007319 147 * CEC peripheral.
mbed_official 52:a51c77007319 148 * @retval None
mbed_official 52:a51c77007319 149 */
mbed_official 52:a51c77007319 150 void CEC_Init(CEC_InitTypeDef* CEC_InitStruct)
mbed_official 52:a51c77007319 151 {
mbed_official 52:a51c77007319 152 uint16_t tmpreg = 0;
mbed_official 52:a51c77007319 153
mbed_official 52:a51c77007319 154 /* Check the parameters */
mbed_official 52:a51c77007319 155 assert_param(IS_CEC_BIT_TIMING_ERROR_MODE(CEC_InitStruct->CEC_BitTimingMode));
mbed_official 52:a51c77007319 156 assert_param(IS_CEC_BIT_PERIOD_ERROR_MODE(CEC_InitStruct->CEC_BitPeriodMode));
mbed_official 52:a51c77007319 157
mbed_official 52:a51c77007319 158 /*---------------------------- CEC CFGR Configuration -----------------*/
mbed_official 52:a51c77007319 159 /* Get the CEC CFGR value */
mbed_official 52:a51c77007319 160 tmpreg = CEC->CFGR;
mbed_official 52:a51c77007319 161
mbed_official 52:a51c77007319 162 /* Clear BTEM and BPEM bits */
mbed_official 52:a51c77007319 163 tmpreg &= CFGR_CLEAR_Mask;
mbed_official 52:a51c77007319 164
mbed_official 52:a51c77007319 165 /* Configure CEC: Bit Timing Error and Bit Period Error */
mbed_official 52:a51c77007319 166 tmpreg |= (uint16_t)(CEC_InitStruct->CEC_BitTimingMode | CEC_InitStruct->CEC_BitPeriodMode);
mbed_official 52:a51c77007319 167
mbed_official 52:a51c77007319 168 /* Write to CEC CFGR register*/
mbed_official 52:a51c77007319 169 CEC->CFGR = tmpreg;
mbed_official 52:a51c77007319 170
mbed_official 52:a51c77007319 171 }
mbed_official 52:a51c77007319 172
mbed_official 52:a51c77007319 173 /**
mbed_official 52:a51c77007319 174 * @brief Enables or disables the specified CEC peripheral.
mbed_official 52:a51c77007319 175 * @param NewState: new state of the CEC peripheral.
mbed_official 52:a51c77007319 176 * This parameter can be: ENABLE or DISABLE.
mbed_official 52:a51c77007319 177 * @retval None
mbed_official 52:a51c77007319 178 */
mbed_official 52:a51c77007319 179 void CEC_Cmd(FunctionalState NewState)
mbed_official 52:a51c77007319 180 {
mbed_official 52:a51c77007319 181 /* Check the parameters */
mbed_official 52:a51c77007319 182 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 52:a51c77007319 183
mbed_official 52:a51c77007319 184 *(__IO uint32_t *) CFGR_PE_BB = (uint32_t)NewState;
mbed_official 52:a51c77007319 185
mbed_official 52:a51c77007319 186 if(NewState == DISABLE)
mbed_official 52:a51c77007319 187 {
mbed_official 52:a51c77007319 188 /* Wait until the PE bit is cleared by hardware (Idle Line detected) */
mbed_official 52:a51c77007319 189 while((CEC->CFGR & CEC_CFGR_PE) != (uint32_t)RESET)
mbed_official 52:a51c77007319 190 {
mbed_official 52:a51c77007319 191 }
mbed_official 52:a51c77007319 192 }
mbed_official 52:a51c77007319 193 }
mbed_official 52:a51c77007319 194
mbed_official 52:a51c77007319 195 /**
mbed_official 52:a51c77007319 196 * @brief Enables or disables the CEC interrupt.
mbed_official 52:a51c77007319 197 * @param NewState: new state of the CEC interrupt.
mbed_official 52:a51c77007319 198 * This parameter can be: ENABLE or DISABLE.
mbed_official 52:a51c77007319 199 * @retval None
mbed_official 52:a51c77007319 200 */
mbed_official 52:a51c77007319 201 void CEC_ITConfig(FunctionalState NewState)
mbed_official 52:a51c77007319 202 {
mbed_official 52:a51c77007319 203 /* Check the parameters */
mbed_official 52:a51c77007319 204 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 52:a51c77007319 205
mbed_official 52:a51c77007319 206 *(__IO uint32_t *) CFGR_IE_BB = (uint32_t)NewState;
mbed_official 52:a51c77007319 207 }
mbed_official 52:a51c77007319 208
mbed_official 52:a51c77007319 209 /**
mbed_official 52:a51c77007319 210 * @brief Defines the Own Address of the CEC device.
mbed_official 52:a51c77007319 211 * @param CEC_OwnAddress: The CEC own address
mbed_official 52:a51c77007319 212 * @retval None
mbed_official 52:a51c77007319 213 */
mbed_official 52:a51c77007319 214 void CEC_OwnAddressConfig(uint8_t CEC_OwnAddress)
mbed_official 52:a51c77007319 215 {
mbed_official 52:a51c77007319 216 /* Check the parameters */
mbed_official 52:a51c77007319 217 assert_param(IS_CEC_ADDRESS(CEC_OwnAddress));
mbed_official 52:a51c77007319 218
mbed_official 52:a51c77007319 219 /* Set the CEC own address */
mbed_official 52:a51c77007319 220 CEC->OAR = CEC_OwnAddress;
mbed_official 52:a51c77007319 221 }
mbed_official 52:a51c77007319 222
mbed_official 52:a51c77007319 223 /**
mbed_official 52:a51c77007319 224 * @brief Sets the CEC prescaler value.
mbed_official 52:a51c77007319 225 * @param CEC_Prescaler: CEC prescaler new value
mbed_official 52:a51c77007319 226 * @retval None
mbed_official 52:a51c77007319 227 */
mbed_official 52:a51c77007319 228 void CEC_SetPrescaler(uint16_t CEC_Prescaler)
mbed_official 52:a51c77007319 229 {
mbed_official 52:a51c77007319 230 /* Check the parameters */
mbed_official 52:a51c77007319 231 assert_param(IS_CEC_PRESCALER(CEC_Prescaler));
mbed_official 52:a51c77007319 232
mbed_official 52:a51c77007319 233 /* Set the Prescaler value*/
mbed_official 52:a51c77007319 234 CEC->PRES = CEC_Prescaler;
mbed_official 52:a51c77007319 235 }
mbed_official 52:a51c77007319 236
mbed_official 52:a51c77007319 237 /**
mbed_official 52:a51c77007319 238 * @brief Transmits single data through the CEC peripheral.
mbed_official 52:a51c77007319 239 * @param Data: the data to transmit.
mbed_official 52:a51c77007319 240 * @retval None
mbed_official 52:a51c77007319 241 */
mbed_official 52:a51c77007319 242 void CEC_SendDataByte(uint8_t Data)
mbed_official 52:a51c77007319 243 {
mbed_official 52:a51c77007319 244 /* Transmit Data */
mbed_official 52:a51c77007319 245 CEC->TXD = Data ;
mbed_official 52:a51c77007319 246 }
mbed_official 52:a51c77007319 247
mbed_official 52:a51c77007319 248
mbed_official 52:a51c77007319 249 /**
mbed_official 52:a51c77007319 250 * @brief Returns the most recent received data by the CEC peripheral.
mbed_official 52:a51c77007319 251 * @param None
mbed_official 52:a51c77007319 252 * @retval The received data.
mbed_official 52:a51c77007319 253 */
mbed_official 52:a51c77007319 254 uint8_t CEC_ReceiveDataByte(void)
mbed_official 52:a51c77007319 255 {
mbed_official 52:a51c77007319 256 /* Receive Data */
mbed_official 52:a51c77007319 257 return (uint8_t)(CEC->RXD);
mbed_official 52:a51c77007319 258 }
mbed_official 52:a51c77007319 259
mbed_official 52:a51c77007319 260 /**
mbed_official 52:a51c77007319 261 * @brief Starts a new message.
mbed_official 52:a51c77007319 262 * @param None
mbed_official 52:a51c77007319 263 * @retval None
mbed_official 52:a51c77007319 264 */
mbed_official 52:a51c77007319 265 void CEC_StartOfMessage(void)
mbed_official 52:a51c77007319 266 {
mbed_official 52:a51c77007319 267 /* Starts of new message */
mbed_official 52:a51c77007319 268 *(__IO uint32_t *) CSR_TSOM_BB = (uint32_t)0x1;
mbed_official 52:a51c77007319 269 }
mbed_official 52:a51c77007319 270
mbed_official 52:a51c77007319 271 /**
mbed_official 52:a51c77007319 272 * @brief Transmits message with or without an EOM bit.
mbed_official 52:a51c77007319 273 * @param NewState: new state of the CEC Tx End Of Message.
mbed_official 52:a51c77007319 274 * This parameter can be: ENABLE or DISABLE.
mbed_official 52:a51c77007319 275 * @retval None
mbed_official 52:a51c77007319 276 */
mbed_official 52:a51c77007319 277 void CEC_EndOfMessageCmd(FunctionalState NewState)
mbed_official 52:a51c77007319 278 {
mbed_official 52:a51c77007319 279 /* Check the parameters */
mbed_official 52:a51c77007319 280 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 52:a51c77007319 281
mbed_official 52:a51c77007319 282 /* The data byte will be transmitted with or without an EOM bit*/
mbed_official 52:a51c77007319 283 *(__IO uint32_t *) CSR_TEOM_BB = (uint32_t)NewState;
mbed_official 52:a51c77007319 284 }
mbed_official 52:a51c77007319 285
mbed_official 52:a51c77007319 286 /**
mbed_official 52:a51c77007319 287 * @brief Gets the CEC flag status
mbed_official 52:a51c77007319 288 * @param CEC_FLAG: specifies the CEC flag to check.
mbed_official 52:a51c77007319 289 * This parameter can be one of the following values:
mbed_official 52:a51c77007319 290 * @arg CEC_FLAG_BTE: Bit Timing Error
mbed_official 52:a51c77007319 291 * @arg CEC_FLAG_BPE: Bit Period Error
mbed_official 52:a51c77007319 292 * @arg CEC_FLAG_RBTFE: Rx Block Transfer Finished Error
mbed_official 52:a51c77007319 293 * @arg CEC_FLAG_SBE: Start Bit Error
mbed_official 52:a51c77007319 294 * @arg CEC_FLAG_ACKE: Block Acknowledge Error
mbed_official 52:a51c77007319 295 * @arg CEC_FLAG_LINE: Line Error
mbed_official 52:a51c77007319 296 * @arg CEC_FLAG_TBTFE: Tx Block Transfer Finished Error
mbed_official 52:a51c77007319 297 * @arg CEC_FLAG_TEOM: Tx End Of Message
mbed_official 52:a51c77007319 298 * @arg CEC_FLAG_TERR: Tx Error
mbed_official 52:a51c77007319 299 * @arg CEC_FLAG_TBTRF: Tx Byte Transfer Request or Block Transfer Finished
mbed_official 52:a51c77007319 300 * @arg CEC_FLAG_RSOM: Rx Start Of Message
mbed_official 52:a51c77007319 301 * @arg CEC_FLAG_REOM: Rx End Of Message
mbed_official 52:a51c77007319 302 * @arg CEC_FLAG_RERR: Rx Error
mbed_official 52:a51c77007319 303 * @arg CEC_FLAG_RBTF: Rx Byte/Block Transfer Finished
mbed_official 52:a51c77007319 304 * @retval The new state of CEC_FLAG (SET or RESET)
mbed_official 52:a51c77007319 305 */
mbed_official 52:a51c77007319 306 FlagStatus CEC_GetFlagStatus(uint32_t CEC_FLAG)
mbed_official 52:a51c77007319 307 {
mbed_official 52:a51c77007319 308 FlagStatus bitstatus = RESET;
mbed_official 52:a51c77007319 309 uint32_t cecreg = 0, cecbase = 0;
mbed_official 52:a51c77007319 310
mbed_official 52:a51c77007319 311 /* Check the parameters */
mbed_official 52:a51c77007319 312 assert_param(IS_CEC_GET_FLAG(CEC_FLAG));
mbed_official 52:a51c77007319 313
mbed_official 52:a51c77007319 314 /* Get the CEC peripheral base address */
mbed_official 52:a51c77007319 315 cecbase = (uint32_t)(CEC_BASE);
mbed_official 52:a51c77007319 316
mbed_official 52:a51c77007319 317 /* Read flag register index */
mbed_official 52:a51c77007319 318 cecreg = CEC_FLAG >> 28;
mbed_official 52:a51c77007319 319
mbed_official 52:a51c77007319 320 /* Get bit[23:0] of the flag */
mbed_official 52:a51c77007319 321 CEC_FLAG &= FLAG_Mask;
mbed_official 52:a51c77007319 322
mbed_official 52:a51c77007319 323 if(cecreg != 0)
mbed_official 52:a51c77007319 324 {
mbed_official 52:a51c77007319 325 /* Flag in CEC ESR Register */
mbed_official 52:a51c77007319 326 CEC_FLAG = (uint32_t)(CEC_FLAG >> 16);
mbed_official 52:a51c77007319 327
mbed_official 52:a51c77007319 328 /* Get the CEC ESR register address */
mbed_official 52:a51c77007319 329 cecbase += 0xC;
mbed_official 52:a51c77007319 330 }
mbed_official 52:a51c77007319 331 else
mbed_official 52:a51c77007319 332 {
mbed_official 52:a51c77007319 333 /* Get the CEC CSR register address */
mbed_official 52:a51c77007319 334 cecbase += 0x10;
mbed_official 52:a51c77007319 335 }
mbed_official 52:a51c77007319 336
mbed_official 52:a51c77007319 337 if(((*(__IO uint32_t *)cecbase) & CEC_FLAG) != (uint32_t)RESET)
mbed_official 52:a51c77007319 338 {
mbed_official 52:a51c77007319 339 /* CEC_FLAG is set */
mbed_official 52:a51c77007319 340 bitstatus = SET;
mbed_official 52:a51c77007319 341 }
mbed_official 52:a51c77007319 342 else
mbed_official 52:a51c77007319 343 {
mbed_official 52:a51c77007319 344 /* CEC_FLAG is reset */
mbed_official 52:a51c77007319 345 bitstatus = RESET;
mbed_official 52:a51c77007319 346 }
mbed_official 52:a51c77007319 347
mbed_official 52:a51c77007319 348 /* Return the CEC_FLAG status */
mbed_official 52:a51c77007319 349 return bitstatus;
mbed_official 52:a51c77007319 350 }
mbed_official 52:a51c77007319 351
mbed_official 52:a51c77007319 352 /**
mbed_official 52:a51c77007319 353 * @brief Clears the CEC's pending flags.
mbed_official 52:a51c77007319 354 * @param CEC_FLAG: specifies the flag to clear.
mbed_official 52:a51c77007319 355 * This parameter can be any combination of the following values:
mbed_official 52:a51c77007319 356 * @arg CEC_FLAG_TERR: Tx Error
mbed_official 52:a51c77007319 357 * @arg CEC_FLAG_TBTRF: Tx Byte Transfer Request or Block Transfer Finished
mbed_official 52:a51c77007319 358 * @arg CEC_FLAG_RSOM: Rx Start Of Message
mbed_official 52:a51c77007319 359 * @arg CEC_FLAG_REOM: Rx End Of Message
mbed_official 52:a51c77007319 360 * @arg CEC_FLAG_RERR: Rx Error
mbed_official 52:a51c77007319 361 * @arg CEC_FLAG_RBTF: Rx Byte/Block Transfer Finished
mbed_official 52:a51c77007319 362 * @retval None
mbed_official 52:a51c77007319 363 */
mbed_official 52:a51c77007319 364 void CEC_ClearFlag(uint32_t CEC_FLAG)
mbed_official 52:a51c77007319 365 {
mbed_official 52:a51c77007319 366 uint32_t tmp = 0x0;
mbed_official 52:a51c77007319 367
mbed_official 52:a51c77007319 368 /* Check the parameters */
mbed_official 52:a51c77007319 369 assert_param(IS_CEC_CLEAR_FLAG(CEC_FLAG));
mbed_official 52:a51c77007319 370
mbed_official 52:a51c77007319 371 tmp = CEC->CSR & 0x2;
mbed_official 52:a51c77007319 372
mbed_official 52:a51c77007319 373 /* Clear the selected CEC flags */
mbed_official 52:a51c77007319 374 CEC->CSR &= (uint32_t)(((~(uint32_t)CEC_FLAG) & 0xFFFFFFFC) | tmp);
mbed_official 52:a51c77007319 375 }
mbed_official 52:a51c77007319 376
mbed_official 52:a51c77007319 377 /**
mbed_official 52:a51c77007319 378 * @brief Checks whether the specified CEC interrupt has occurred or not.
mbed_official 52:a51c77007319 379 * @param CEC_IT: specifies the CEC interrupt source to check.
mbed_official 52:a51c77007319 380 * This parameter can be one of the following values:
mbed_official 52:a51c77007319 381 * @arg CEC_IT_TERR: Tx Error
mbed_official 52:a51c77007319 382 * @arg CEC_IT_TBTF: Tx Block Transfer Finished
mbed_official 52:a51c77007319 383 * @arg CEC_IT_RERR: Rx Error
mbed_official 52:a51c77007319 384 * @arg CEC_IT_RBTF: Rx Block Transfer Finished
mbed_official 52:a51c77007319 385 * @retval The new state of CEC_IT (SET or RESET).
mbed_official 52:a51c77007319 386 */
mbed_official 52:a51c77007319 387 ITStatus CEC_GetITStatus(uint8_t CEC_IT)
mbed_official 52:a51c77007319 388 {
mbed_official 52:a51c77007319 389 ITStatus bitstatus = RESET;
mbed_official 52:a51c77007319 390 uint32_t enablestatus = 0;
mbed_official 52:a51c77007319 391
mbed_official 52:a51c77007319 392 /* Check the parameters */
mbed_official 52:a51c77007319 393 assert_param(IS_CEC_GET_IT(CEC_IT));
mbed_official 52:a51c77007319 394
mbed_official 52:a51c77007319 395 /* Get the CEC IT enable bit status */
mbed_official 52:a51c77007319 396 enablestatus = (CEC->CFGR & (uint8_t)CEC_CFGR_IE) ;
mbed_official 52:a51c77007319 397
mbed_official 52:a51c77007319 398 /* Check the status of the specified CEC interrupt */
mbed_official 52:a51c77007319 399 if (((CEC->CSR & CEC_IT) != (uint32_t)RESET) && enablestatus)
mbed_official 52:a51c77007319 400 {
mbed_official 52:a51c77007319 401 /* CEC_IT is set */
mbed_official 52:a51c77007319 402 bitstatus = SET;
mbed_official 52:a51c77007319 403 }
mbed_official 52:a51c77007319 404 else
mbed_official 52:a51c77007319 405 {
mbed_official 52:a51c77007319 406 /* CEC_IT is reset */
mbed_official 52:a51c77007319 407 bitstatus = RESET;
mbed_official 52:a51c77007319 408 }
mbed_official 52:a51c77007319 409 /* Return the CEC_IT status */
mbed_official 52:a51c77007319 410 return bitstatus;
mbed_official 52:a51c77007319 411 }
mbed_official 52:a51c77007319 412
mbed_official 52:a51c77007319 413 /**
mbed_official 52:a51c77007319 414 * @brief Clears the CEC's interrupt pending bits.
mbed_official 52:a51c77007319 415 * @param CEC_IT: specifies the CEC interrupt pending bit to clear.
mbed_official 52:a51c77007319 416 * This parameter can be any combination of the following values:
mbed_official 52:a51c77007319 417 * @arg CEC_IT_TERR: Tx Error
mbed_official 52:a51c77007319 418 * @arg CEC_IT_TBTF: Tx Block Transfer Finished
mbed_official 52:a51c77007319 419 * @arg CEC_IT_RERR: Rx Error
mbed_official 52:a51c77007319 420 * @arg CEC_IT_RBTF: Rx Block Transfer Finished
mbed_official 52:a51c77007319 421 * @retval None
mbed_official 52:a51c77007319 422 */
mbed_official 52:a51c77007319 423 void CEC_ClearITPendingBit(uint16_t CEC_IT)
mbed_official 52:a51c77007319 424 {
mbed_official 52:a51c77007319 425 uint32_t tmp = 0x0;
mbed_official 52:a51c77007319 426
mbed_official 52:a51c77007319 427 /* Check the parameters */
mbed_official 52:a51c77007319 428 assert_param(IS_CEC_GET_IT(CEC_IT));
mbed_official 52:a51c77007319 429
mbed_official 52:a51c77007319 430 tmp = CEC->CSR & 0x2;
mbed_official 52:a51c77007319 431
mbed_official 52:a51c77007319 432 /* Clear the selected CEC interrupt pending bits */
mbed_official 52:a51c77007319 433 CEC->CSR &= (uint32_t)(((~(uint32_t)CEC_IT) & 0xFFFFFFFC) | tmp);
mbed_official 52:a51c77007319 434 }
mbed_official 52:a51c77007319 435
mbed_official 52:a51c77007319 436 /**
mbed_official 52:a51c77007319 437 * @}
mbed_official 52:a51c77007319 438 */
mbed_official 52:a51c77007319 439
mbed_official 52:a51c77007319 440 /**
mbed_official 52:a51c77007319 441 * @}
mbed_official 52:a51c77007319 442 */
mbed_official 52:a51c77007319 443
mbed_official 52:a51c77007319 444 /**
mbed_official 52:a51c77007319 445 * @}
mbed_official 52:a51c77007319 446 */
mbed_official 52:a51c77007319 447
mbed_official 52:a51c77007319 448 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/