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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/USART/Synchronous/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/USART/Synchronous/main.c new file mode 100644 index 0000000..e00afbe --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/USART/Synchronous/main.c @@ -0,0 +1,306 @@ +/** + ****************************************************************************** + * @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>© 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****/ |