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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/FullDuplex_SoftNSS/main.c')
| -rw-r--r-- | tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/FullDuplex_SoftNSS/main.c | 336 |
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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/FullDuplex_SoftNSS/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/FullDuplex_SoftNSS/main.c new file mode 100644 index 0000000..8e34cbd --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/FullDuplex_SoftNSS/main.c @@ -0,0 +1,336 @@ +/** + ****************************************************************************** + * @file SPI/FullDuplex_SoftNSS/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 SPI_FullDuplex_SoftNSS + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus; + +/* Private define ------------------------------------------------------------*/ +#define BufferSize 32 + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +SPI_InitTypeDef SPI_InitStructure; +uint8_t SPIy_Buffer_Tx[BufferSize] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, + 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, + 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, + 0x1D, 0x1E, 0x1F, 0x20}; +uint8_t SPIz_Buffer_Tx[BufferSize] = {0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, + 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, + 0x5F, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, + 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, + 0x6D, 0x6E, 0x6F, 0x70}; +uint8_t SPIy_Buffer_Rx[BufferSize], SPIz_Buffer_Rx[BufferSize]; +__IO uint8_t TxIdx = 0, RxIdx = 0, k = 0; +volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED; +volatile TestStatus TransferStatus3 = FAILED, TransferStatus4 = FAILED; + +/* Private functions ---------------------------------------------------------*/ +void RCC_Configuration(void); +void GPIO_Configuration(uint16_t SPIy_Mode, uint16_t SPIz_Mode); +TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength); + +/** + * @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(); + + /* 1st phase: SPIy Master and SPIz Slave */ + /* GPIO configuration ------------------------------------------------------*/ + GPIO_Configuration(SPI_Mode_Master, SPI_Mode_Slave); + + /* SPIy Config -------------------------------------------------------------*/ + SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; + SPI_InitStructure.SPI_Mode = SPI_Mode_Master; + SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; + SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; + SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; + SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; + SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4; + SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_LSB; + SPI_InitStructure.SPI_CRCPolynomial = 7; + SPI_Init(SPIy, &SPI_InitStructure); + + /* SPIz Config -------------------------------------------------------------*/ + SPI_InitStructure.SPI_Mode = SPI_Mode_Slave; + SPI_Init(SPIz, &SPI_InitStructure); + + /* Enable SPIy */ + SPI_Cmd(SPIy, ENABLE); + /* Enable SPIz */ + SPI_Cmd(SPIz, ENABLE); + + /* Transfer procedure */ + while (TxIdx < BufferSize) + { + /* Wait for SPIy Tx buffer empty */ + while (SPI_I2S_GetFlagStatus(SPIy, SPI_I2S_FLAG_TXE) == RESET); + /* Send SPIz data */ + SPI_I2S_SendData(SPIz, SPIz_Buffer_Tx[TxIdx]); + /* Send SPIy data */ + SPI_I2S_SendData(SPIy, SPIy_Buffer_Tx[TxIdx++]); + /* Wait for SPIz data reception */ + while (SPI_I2S_GetFlagStatus(SPIz, SPI_I2S_FLAG_RXNE) == RESET); + /* Read SPIz received data */ + SPIz_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPIz); + /* Wait for SPIy data reception */ + while (SPI_I2S_GetFlagStatus(SPIy, SPI_I2S_FLAG_RXNE) == RESET); + /* Read SPIy received data */ + SPIy_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPIy); + } + + /* Check the correctness of written dada */ + TransferStatus1 = Buffercmp(SPIz_Buffer_Rx, SPIy_Buffer_Tx, BufferSize); + TransferStatus2 = Buffercmp(SPIy_Buffer_Rx, SPIz_Buffer_Tx, BufferSize); + /* TransferStatus1, TransferStatus2 = PASSED, if the transmitted and received data + are equal */ + /* TransferStatus1, TransferStatus2 = FAILED, if the transmitted and received data + are different */ + + /* 2nd phase: SPIy Slave and SPIz Master */ + /* GPIO configuration ------------------------------------------------------*/ + GPIO_Configuration(SPI_Mode_Slave , SPI_Mode_Master); + + /* SPIy Re-configuration ---------------------------------------------------*/ + SPI_InitStructure.SPI_Mode = SPI_Mode_Slave; + SPI_Init(SPIy, &SPI_InitStructure); + + /* SPIz Re-configuration ---------------------------------------------------*/ + SPI_InitStructure.SPI_Mode = SPI_Mode_Master; + SPI_Init(SPIz, &SPI_InitStructure); + + /* Reset TxIdx, RxIdx indexes and receive tables values */ + TxIdx = 0; + RxIdx = 0; + for (k = 0; k < BufferSize; k++) SPIz_Buffer_Rx[k] = 0; + for (k = 0; k < BufferSize; k++) SPIy_Buffer_Rx[k] = 0; + + /* Transfer procedure */ + while (TxIdx < BufferSize) + { + /* Wait for SPIz Tx buffer empty */ + while (SPI_I2S_GetFlagStatus(SPIz, SPI_I2S_FLAG_TXE) == RESET); + /* Send SPIy data */ + SPI_I2S_SendData(SPIy, SPIy_Buffer_Tx[TxIdx]); + /* Send SPIz data */ + SPI_I2S_SendData(SPIz, SPIz_Buffer_Tx[TxIdx++]); + /* Wait for SPIy data reception */ + while (SPI_I2S_GetFlagStatus(SPIy, SPI_I2S_FLAG_RXNE) == RESET); + /* Read SPIy received data */ + SPIy_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPIy); + /* Wait for SPIz data reception */ + while (SPI_I2S_GetFlagStatus(SPIz, SPI_I2S_FLAG_RXNE) == RESET); + /* Read SPIz received data */ + SPIz_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPIz); + } + + /* Check the correctness of written dada */ + TransferStatus3 = Buffercmp(SPIz_Buffer_Rx, SPIy_Buffer_Tx, BufferSize); + TransferStatus4 = Buffercmp(SPIy_Buffer_Rx, SPIz_Buffer_Tx, BufferSize); + /* TransferStatus3, TransferStatus4 = PASSED, if the transmitted and received data + are equal */ + /* TransferStatus3, TransferStatus4 = FAILED, if the transmitted and received data + are different */ + + while (1) + {} +} + +/** + * @brief Configures the different system clocks. + * @param None + * @retval None + */ +void RCC_Configuration(void) +{ + /* PCLK2 = HCLK/2 */ + RCC_PCLK2Config(RCC_HCLK_Div2); + +/* Enable peripheral clocks --------------------------------------------------*/ +#ifdef USE_STM3210C_EVAL + /* Enable GPIO clock for SPIy and SPIz */ + RCC_APB2PeriphClockCmd(SPIy_GPIO_CLK | SPIz_GPIO_CLK | RCC_APB2Periph_AFIO, ENABLE); + + /* Enable SPIy Periph clock */ + RCC_APB1PeriphClockCmd(SPIy_CLK, ENABLE); + +#else + /* Enable SPIy clock and GPIO clock for SPIy and SPIz */ + RCC_APB2PeriphClockCmd(SPIy_GPIO_CLK | SPIz_GPIO_CLK | SPIy_CLK, ENABLE); +#endif + /* Enable SPIz Periph clock */ + RCC_APB1PeriphClockCmd(SPIz_CLK, ENABLE); +} + +/** + * @brief Configures the different SPIy and SPIz GPIO ports. + * @param SPIy_Mode: Specifies the SPIy operating mode. + * This parameter can be: + * - SPIy_Mode_Master + * - SPIy_Mode_Slave + * @param SPIz_Mode: Specifies the SPIz operating mode. + * This parameter can be: + * - SPIz_Mode_Master + * - SPIz_Mode_Slave + * @retval None + */ +void GPIO_Configuration(uint16_t SPIy_Mode, uint16_t SPIz_Mode) +{ + GPIO_InitTypeDef GPIO_InitStructure; + +#ifdef USE_STM3210C_EVAL + /* Enable SPI3 Pins Software Remapping */ + GPIO_PinRemapConfig(GPIO_Remap_SPI3, ENABLE); +#endif + + /* Configure SPIy pins: SCK, MISO and MOSI ---------------------------------*/ + GPIO_InitStructure.GPIO_Pin = SPIy_PIN_SCK | SPIy_PIN_MOSI; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + + if(SPIy_Mode == SPI_Mode_Master) + { + /* Configure SCK and MOSI pins as Alternate Function Push Pull */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + } + else + { + /* Configure SCK and MOSI pins as Input Floating */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + } + GPIO_Init(SPIy_GPIO, &GPIO_InitStructure); + + GPIO_InitStructure.GPIO_Pin = SPIy_PIN_MISO; + + if(SPIy_Mode == SPI_Mode_Master) + { + /* Configure MISO pin as Input Floating */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + } + else + { + /* Configure MISO pin as Alternate Function Push Pull */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + } + GPIO_Init(SPIy_GPIO, &GPIO_InitStructure); + + /* Configure SPIz pins: SCK, MISO and MOSI ---------------------------------*/ + GPIO_InitStructure.GPIO_Pin = SPIz_PIN_SCK | SPIz_PIN_MOSI; + + if(SPIz_Mode == SPI_Mode_Slave) + { + /* Configure SCK and MOSI pins as Input Floating */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + } + else + { + /* Configure SCK and MOSI pins as Alternate Function Push Pull */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + } + GPIO_Init(SPIz_GPIO, &GPIO_InitStructure); + + GPIO_InitStructure.GPIO_Pin = SPIz_PIN_MISO; + if(SPIz_Mode == SPI_Mode_Slave) + { + /* Configure MISO pin as Alternate Function Push Pull */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + } + else + { /* Configure MISO pin as Input Floating */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + } + GPIO_Init(SPIz_GPIO, &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****/ |