/**
******************************************************************************
* @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.
*
*
© COPYRIGHT 2011 STMicroelectronics
******************************************************************************
*/
/* 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****/