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+/**
+ ******************************************************************************
+ * @file CEC/DataExchangeInterrupt/main.c
+ * @author MCD Application Team
+ * @version V3.5.0
+ * @date 08-April-2011
+ * @brief Main program body
+ ******************************************************************************
+ * @attention
+ *
+ * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+ * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+ * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+ * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+ * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+ * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+ *
+ * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x.h"
+#include "stm32_eval.h"
+
+/** @addtogroup STM32F10x_StdPeriph_Examples
+ * @{
+ */
+
+/** @addtogroup CEC_DataExchangeInterrupt
+ * @{
+ */
+
+
+/* Private typedef -----------------------------------------------------------*/
+typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
+
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+CEC_InitTypeDef CEC_InitStructure;
+
+uint8_t ByteNumber = 10;
+volatile TestStatus TransferStatus = FAILED;
+extern uint8_t TransmitBuffer[10];
+extern uint8_t ReceiveBuffer[10];
+extern __IO uint8_t ReceivedFrame;
+
+/* Private function prototypes -----------------------------------------------*/
+void RCC_Configuration(void);
+void NVIC_Configuration(void);
+void GPIO_Configuration(void);
+TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);
+
+/* Private functions ---------------------------------------------------------*/
+
+/**
+ * @brief Main program
+ * @param None
+ * @retval None
+ */
+int main(void)
+{
+ /*!< At this stage the microcontroller clock setting is already configured,
+ this is done through SystemInit() function which is called from startup
+ file (startup_stm32f10x_xx.s) before to branch to application main.
+ To reconfigure the default setting of SystemInit() function, refer to
+ system_stm32f10x.c file
+ */
+
+ /* RCC configuration */
+ RCC_Configuration();
+
+ /* NVIC configuration */
+ NVIC_Configuration();
+
+ /* GPIO configuration */
+ GPIO_Configuration();
+
+ /* Configure the CEC peripheral */
+ CEC_InitStructure.CEC_BitTimingMode = CEC_BitTimingStdMode;
+ CEC_InitStructure.CEC_BitPeriodMode = CEC_BitPeriodStdMode;
+ CEC_Init(&CEC_InitStructure);
+
+ /* Set Prescaler value for APB1 clock PCLK1 = 24MHz */
+ CEC_SetPrescaler(0x4AF);
+
+ /* Set the CEC initiator address */
+ CEC_OwnAddressConfig(MY_DEVICE_ADDRESS);
+
+ /* Activate CEC interrupts associated to the set of RBTF,RERR, TBTF, TERR flags */
+ CEC_ITConfig(ENABLE);
+
+ /* Enable CEC */
+ CEC_Cmd(ENABLE);
+
+ /* If a frame has been received */
+ while(ReceivedFrame == 0)
+ {
+ }
+
+ /* Check the received data with the send ones */
+ TransferStatus = Buffercmp(TransmitBuffer, ReceiveBuffer, ByteNumber);
+ /* TransferStatus = PASSED, if the data transmitted from CEC Device1 and
+ received by CEC Device2 are the same */
+ /* TransferStatus = FAILED, if the data transmitted from CEC Device1 and
+ received by CEC Device2 are different */
+
+ if (TransferStatus == PASSED)
+ {
+ /* OK */
+ /* Turn on LED1 */
+ STM_EVAL_LEDOn(LED1);
+ }
+ else
+ {
+ /* KO */
+ /* Turn on LED2 */
+ STM_EVAL_LEDOn(LED2);
+ }
+ while(1)
+ {
+ }
+}
+
+/**
+ * @brief Configures the different system clocks.
+ * @param None
+ * @retval None
+ */
+void RCC_Configuration(void)
+{
+ /* Enable CEC clock */
+ RCC_APB1PeriphClockCmd(RCC_APB1Periph_CEC, ENABLE);
+
+ /* Initialize LEDs and Key Button available on STM32F100B-EVAL board ***/
+ /* Configure LED1, LED2, LED3 and LED4 */
+ STM_EVAL_LEDInit(LED1);
+ STM_EVAL_LEDInit(LED2);
+ STM_EVAL_LEDInit(LED3);
+ STM_EVAL_LEDInit(LED4);
+
+ /* Configure the Key Push button and its associated EXTI Line */
+ STM_EVAL_PBInit(Button_KEY, Mode_EXTI);
+}
+
+/**
+ * @brief Configures the different NVIC interrupts.
+ * @param None
+ * @retval None
+ */
+void NVIC_Configuration(void)
+{
+ NVIC_InitTypeDef NVIC_InitStructure;
+
+ /* Configure two bits for preemption priority */
+ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
+
+ /* Enable the CEC global Interrupt (with higher priority) */
+ NVIC_InitStructure.NVIC_IRQChannel = CEC_IRQn;
+ NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
+ NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+ NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+ NVIC_Init(&NVIC_InitStructure);
+}
+
+/**
+ * @brief Configures the different GPIO ports.
+ * @param None
+ * @retval None
+ */
+void GPIO_Configuration(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Enable GPIOB clocks */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
+
+ /* Configure GPIOB Pin 8 (CEC line) as Output open drain */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
+ GPIO_Init(GPIOB, &GPIO_InitStructure);
+}
+
+/**
+ * @brief Compares two buffers.
+ * @param pBuffer1, pBuffer2: buffers to be compared.
+ * @param BufferLength: buffer's length
+ * @retval PASSED: pBuffer1 identical to pBuffer2
+ * FAILED: pBuffer1 differs from pBuffer2
+ */
+TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)
+{
+ while(BufferLength--)
+ {
+ if(*pBuffer1 != *pBuffer2)
+ {
+ return FAILED;
+ }
+
+ pBuffer1++;
+ pBuffer2++;
+ }
+
+ return PASSED;
+}
+
+#ifdef USE_FULL_ASSERT
+
+/**
+ * @brief Reports the name of the source file and the source line number
+ * where the assert_param error has occurred.
+ * @param file: pointer to the source file name
+ * @param line: assert_param error line source number
+ * @retval None
+ */
+void assert_failed(uint8_t* file, uint32_t line)
+{
+ /* User can add his own implementation to report the file name and line number,
+ ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+
+ /* Infinite loop */
+ while (1)
+ {
+ }
+}
+
+#endif
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/