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-/**
- ******************************************************************************
- * @file USART/Synchronous/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 "platform_config.h"
-
-/** @addtogroup STM32F10x_StdPeriph_Examples
- * @{
- */
-
-/** @addtogroup USART_Synchronous
- * @{
- */
-
-/* Private typedef -----------------------------------------------------------*/
-typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
-
-/* Private define ------------------------------------------------------------*/
-#define TxBufferSize1 (countof(TxBuffer1) - 1)
-#define TxBufferSize2 (countof(TxBuffer2) - 1)
-#define DYMMY_BYTE 0x00
-
-/* Private macro -------------------------------------------------------------*/
-#define countof(a) (sizeof(a) / sizeof(*(a)))
-
-/* Private variables ---------------------------------------------------------*/
-USART_InitTypeDef USART_InitStructure;
-USART_ClockInitTypeDef USART_ClockInitStructure;
-
-uint8_t TxBuffer1[] = "USART Synchronous Example: USARTy -> SPIy using TXE and RXNE Flags";
-uint8_t TxBuffer2[] = "USART Synchronous Example: SPIy -> USARTy using TXE and RXNE Flags";
-uint8_t RxBuffer1[TxBufferSize2];
-uint8_t RxBuffer2[TxBufferSize1];
-__IO uint8_t NbrOfDataToRead1 = TxBufferSize2;
-__IO uint8_t NbrOfDataToRead2 = TxBufferSize1;
-__IO uint8_t TxCounter1 = 0, RxCounter1 = 0;
-__IO uint8_t TxCounter2 = 0, RxCounter2 = 0;
-volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;
-
-/* Private function prototypes -----------------------------------------------*/
-void RCC_Configuration(void);
-void GPIO_Configuration(void);
-void SPI_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
- */
-
- /* System Clocks Configuration */
- RCC_Configuration();
-
- /* Configure the GPIO ports */
- GPIO_Configuration();
-
- /* Configure the SPI */
- SPI_Configuration();
-
-/* USARTy configuration ------------------------------------------------------*/
- /* USARTy configured as follow:
- - BaudRate = 115200 baud
- - Word Length = 8 Bits
- - One Stop Bit
- - No parity
- - Hardware flow control disabled (RTS and CTS signals)
- - Receive and transmit enabled
- - USART Clock Enabled
- - USART CPOL: Clock is active High
- - USART CPHA: Data is captured on the second edge
- - USART LastBit: The clock pulse of the last data bit is output to
- the SCLK pin
- */
- USART_ClockInitStructure.USART_Clock = USART_Clock_Enable;
- USART_ClockInitStructure.USART_CPOL = USART_CPOL_High;
- USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
- USART_ClockInitStructure.USART_LastBit = USART_LastBit_Enable;
- USART_ClockInit(USARTy, &USART_ClockInitStructure);
-
- USART_InitStructure.USART_BaudRate = 115200;
- USART_InitStructure.USART_WordLength = USART_WordLength_8b;
- USART_InitStructure.USART_StopBits = USART_StopBits_1;
- USART_InitStructure.USART_Parity = USART_Parity_No ;
- USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
- USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
- USART_Init(USARTy, &USART_InitStructure);
-
- /* Configure the USARTy */
- USART_Init(USARTy, &USART_InitStructure);
-
- /* Enable the USARTy */
- USART_Cmd(USARTy, ENABLE);
-
- while(NbrOfDataToRead2--)
- {
- /* Write one byte in the USARTy Transmit Data Register */
- USART_SendData(USARTy, TxBuffer1[TxCounter1++]);
- /* Wait until end of transmit */
- while(USART_GetFlagStatus(USARTy, USART_FLAG_TC) == RESET)
- {
- }
- /* Wait the byte is entirely received by SPIy */
- while(SPI_I2S_GetFlagStatus(SPIy, SPI_I2S_FLAG_RXNE) == RESET)
- {
- }
- /* Store the received byte in the RxBuffer2 */
- RxBuffer2[RxCounter2++] = SPI_I2S_ReceiveData(SPIy);
- }
-
- /* Clear the USARTy Data Register */
- USART_ReceiveData(USARTy);
-
- while(NbrOfDataToRead1--)
- {
- /* Wait until end of transmit */
- while(SPI_I2S_GetFlagStatus(SPIy, SPI_I2S_FLAG_TXE)== RESET)
- {
- }
- /* Write one byte in the SPIy Transmit Data Register */
- SPI_I2S_SendData(SPIy, TxBuffer2[TxCounter2++]);
-
- /* Send a Dummy byte to generate clock to slave */
- USART_SendData(USARTy, DYMMY_BYTE);
- /* Wait until end of transmit */
- while(USART_GetFlagStatus(USARTy, USART_FLAG_TC) == RESET)
- {
- }
- /* Wait the byte is entirely received by USARTy */
- while(USART_GetFlagStatus(USARTy, USART_FLAG_RXNE) == RESET)
- {
- }
- /* Store the received byte in the RxBuffer1 */
- RxBuffer1[RxCounter1++] = USART_ReceiveData(USARTy);
- }
-
- /* Check the received data with the send ones */
- TransferStatus1 = Buffercmp(TxBuffer1, RxBuffer2, TxBufferSize1);
- /* TransferStatus = PASSED, if the data transmitted from USARTy and
- received by SPIy are the same */
- /* TransferStatus = FAILED, if the data transmitted from USARTy and
- received by SPIy are different */
- TransferStatus2 = Buffercmp(TxBuffer2, RxBuffer1, TxBufferSize2);
- /* TransferStatus = PASSED, if the data transmitted from SPIy and
- received by USARTy are the same */
- /* TransferStatus = FAILED, if the data transmitted from SPIy and
- received by USARTy are different */
-
- while (1)
- {
- }
-}
-
-/**
- * @brief Configures the different system clocks.
- * @param None
- * @retval None
- */
-void RCC_Configuration(void)
-{
- /* Enable GPIO clock */
- RCC_APB2PeriphClockCmd(USARTy_GPIO_CLK | SPIy_GPIO_CLK | RCC_APB2Periph_AFIO, ENABLE);
-
- /* Enable USARTy Clock */
- RCC_APB2PeriphClockCmd(USARTy_CLK, ENABLE);
- /* Enable SPIy Clock */
- RCC_APB2PeriphClockCmd(SPIy_CLK, ENABLE);
-}
-
-/**
- * @brief Configures the different GPIO ports.
- * @param None
- * @retval None
- */
-void GPIO_Configuration(void)
-{
- GPIO_InitTypeDef GPIO_InitStructure;
-
- /* Configure USARTy TX and USARTy CK pins as alternate function push-pull */
- GPIO_InitStructure.GPIO_Pin = USARTy_TxPin | USARTy_ClkPin;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(USARTy_GPIO, &GPIO_InitStructure);
-
- /* Configure SPI1 pins: SCK, MISO and MOSI */
- GPIO_InitStructure.GPIO_Pin = SPIy_SCKPin | SPIy_MISOPin | SPIy_MOSIPin;
- GPIO_Init(SPIy_GPIO, &GPIO_InitStructure);
-
- /* Configure USARTy RX as input floating */
- GPIO_InitStructure.GPIO_Pin = USARTy_RxPin;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
- GPIO_Init(USARTy_GPIO, &GPIO_InitStructure);
-}
-
-/**
- * @brief Configures the SPI.
- * @param None
- * @retval None
- */
-void SPI_Configuration(void)
-{
- SPI_InitTypeDef SPI_InitStructure;
-
- SPI_StructInit(&SPI_InitStructure);
-
- SPI_I2S_DeInit(SPIy);
-
- /* SPIy Config */
- SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
- SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
- SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
- SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
- SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
- SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
- SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_LSB;
-
- /* Configure SPIy */
- SPI_Init(SPIy, &SPI_InitStructure);
-
- /* SPIy enable */
- SPI_Cmd(SPIy, ENABLE);
-}
-
-/**
- * @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****/
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