/**
* @brief Configures the CEC peripheral.
* @param None
* @retval None
*/
static void CEC_Config(void)
{
CEC_InitTypeDef CEC_InitStruct;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* DeInitialize CEC to reinitialize from scratch */
CEC_DeInit();
/* Enable CEC clocks */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CEC, ENABLE);
/* Enable CEC_LINE_GPIO clocks */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE);
/* Configure CEC_LINE_GPIO as Output open drain */
GPIO_PinAFConfig(GPIOB, GPIO_PinSource6 , GPIO_AF3_CEC);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 ;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Enable the CEC global Interrupt (with higher priority) */
NVIC_InitStructure.NVIC_IRQChannel = CEC_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Configure CEC */
CEC_InitStruct.CEC_SignalFreeTime = CEC_SignalFreeTime_Standard;
CEC_InitStruct.CEC_RxTolerance = CEC_RxTolerance_Standard;
CEC_InitStruct.CEC_StopReception = CEC_StopReception_Off;
CEC_InitStruct.CEC_BitRisingError = CEC_BitRisingError_Off;
CEC_InitStruct.CEC_LongBitPeriodError = CEC_LongBitPeriodError_Off;
CEC_InitStruct.CEC_BRDNoGen = CEC_BRDNoGen_On;
CEC_InitStruct.CEC_SFTOption = CEC_SFTOption_Off;
CEC_Init(& CEC_InitStruct);
/* Configure Own Address */
CEC_OwnAddressConfig(MyOwnAddress);
/* Enable Listen Mode */
CEC_ListenModeCmd(ENABLE);
/* Activate CEC interrupts associated to the set of TX flags */
CEC_ITConfig(CEC_IT_TXEND|CEC_IT_TXBR,ENABLE);
/* Activate CEC interrupts associated to the set of RX flags */
CEC_ITConfig(CEC_IT_RXEND|CEC_IT_RXBR,ENABLE);
/* Activate CEC interrupts associated to the set of TX error */
CEC_ITConfig(CEC_IT_TXACKE|CEC_IT_TXERR|CEC_IT_ARBLST,ENABLE);
/* Activate CEC interrupts associated to the set of RX error */
CEC_ITConfig(CEC_IT_RXACKE|CEC_IT_LBPE|CEC_IT_SBPE|CEC_IT_BRE,ENABLE);
/* Enable CEC */
CEC_Cmd(ENABLE);
}
/**
* @brief Configures the CEC peripheral.
* @param None
* @retval None
*/
static void CEC_Config(void)
{
CEC_InitTypeDef CEC_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable CEC clocks */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CEC , ENABLE);
/* Enable CEC_LINE_GPIO clocks */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
/* Configure CEC_LINE_GPIO as Output open drain */
#ifdef USE_STM320518_EVAL
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
#else
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
#endif /* USE_STM320518_EVAL */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Enable the CEC global Interrupt (with higher priority) */
#ifdef USE_STM320518_EVAL
NVIC_InitStructure.NVIC_IRQChannel = CEC_IRQn;
#else
NVIC_InitStructure.NVIC_IRQChannel = CEC_CAN_IRQn;
#endif /* USE_STM320518_EVAL */
NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Configure CEC */
CEC_InitStructure.CEC_SignalFreeTime = CEC_SignalFreeTime_Standard;
CEC_InitStructure.CEC_RxTolerance = CEC_RxTolerance_Standard;
CEC_InitStructure.CEC_StopReception = CEC_StopReception_Off;
CEC_InitStructure.CEC_BitRisingError = CEC_BitRisingError_Off;
CEC_InitStructure.CEC_LongBitPeriodError = CEC_LongBitPeriodError_Off;
CEC_InitStructure.CEC_BRDNoGen = CEC_BRDNoGen_Off;
CEC_InitStructure.CEC_SFTOption = CEC_SFTOption_Off;
CEC_Init(&CEC_InitStructure);
/* Set the CEC initiator address */
CEC_OwnAddressConfig(MyLogicalAddress1);
#if defined (DEVICE_3)
/* Enable the listen mode for the Spy device */
CEC_ListenModeCmd(ENABLE);
#endif /* DEVICE_3 */
/* Activate CEC interrupts associated to the set of TX flags */
CEC_ITConfig(CEC_IT_TXEND|CEC_IT_TXBR,ENABLE);
/* Activate CEC interrupts associated to the set of RX flags */
CEC_ITConfig(CEC_IT_RXEND|CEC_IT_RXBR,ENABLE);
/* Activate CEC interrupts associated to the set of TX error */
CEC_ITConfig(CEC_IT_TXACKE|CEC_IT_TXERR|CEC_IT_TXUDR|CEC_IT_ARBLST,ENABLE);
/* Activate CEC interrupts associated to the set of RX error */
CEC_ITConfig(CEC_IT_RXACKE|CEC_IT_LBPE|CEC_IT_SBPE|CEC_IT_BRE|CEC_IT_RXOVR,ENABLE);
/* Enable CEC */
CEC_Cmd(ENABLE);
}