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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/DMA/main.c')
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1 files changed, 281 insertions, 0 deletions
diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/DMA/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/DMA/main.c new file mode 100644 index 0000000..985e800 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/DMA/main.c @@ -0,0 +1,281 @@ +/** + ****************************************************************************** + * @file SPI/DMA/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_DMA + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus; + +/* Private define ------------------------------------------------------------*/ +#define BufferSize 32 + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +SPI_InitTypeDef SPI_InitStructure; +DMA_InitTypeDef DMA_InitStructure; +GPIO_InitTypeDef GPIO_InitStructure; + +uint8_t SPI_MASTER_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 SPI_SLAVE_Buffer_Rx[BufferSize]; +__IO uint8_t TxIdx = 0; +volatile TestStatus TransferStatus = FAILED; + + +/* Private function prototypes -----------------------------------------------*/ +void RCC_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 + */ + + /* System clocks configuration ---------------------------------------------*/ + RCC_Configuration(); + + /* GPIO configuration ------------------------------------------------------*/ + GPIO_Configuration(); + + /* SPI_SLAVE_Rx_DMA_Channel configuration ---------------------------------------------*/ + DMA_DeInit(SPI_SLAVE_Rx_DMA_Channel); + DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SPI_SLAVE_DR_Base; + DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)SPI_SLAVE_Buffer_Rx; + DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; + DMA_InitStructure.DMA_BufferSize = BufferSize; + DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; + DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; + DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; + DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; + DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; + DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh; + DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; + DMA_Init(SPI_SLAVE_Rx_DMA_Channel, &DMA_InitStructure); + + /* SPI_MASTER configuration ------------------------------------------------------*/ + SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx; + SPI_InitStructure.SPI_Mode = SPI_Mode_Master; + SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; + SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; + SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; + SPI_InitStructure.SPI_NSS = SPI_NSS_Hard; + SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4; + SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; + SPI_InitStructure.SPI_CRCPolynomial = 7; + SPI_Init(SPI_MASTER, &SPI_InitStructure); + + /* SPI_SLAVE configuration ------------------------------------------------------*/ + SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Rx; + SPI_InitStructure.SPI_Mode = SPI_Mode_Slave; + SPI_Init(SPI_SLAVE, &SPI_InitStructure); + + /* Enable SPI_MASTER NSS output for master mode */ + SPI_SSOutputCmd(SPI_MASTER, ENABLE); + + /* Enable SPI_SLAVE Rx request */ + SPI_I2S_DMACmd(SPI_SLAVE, SPI_I2S_DMAReq_Rx, ENABLE); + + /* Enable SPI_SLAVE */ + SPI_Cmd(SPI_SLAVE, ENABLE); + /* Enable SPI_MASTER */ + SPI_Cmd(SPI_MASTER, ENABLE); + + /* Enable DMA1 Channel4 */ + DMA_Cmd(SPI_SLAVE_Rx_DMA_Channel, ENABLE); + + /* Transfer procedure */ + while (TxIdx < BufferSize) + { + /* Wait for SPI_MASTER Tx buffer empty */ + while (SPI_I2S_GetFlagStatus(SPI_MASTER, SPI_I2S_FLAG_TXE) == RESET); + /* Send SPI_MASTER data */ + SPI_I2S_SendData(SPI_MASTER, SPI_MASTER_Buffer_Tx[TxIdx++]); + } + + /* Wait for DMA1 channel4 transfer complete */ + while (!DMA_GetFlagStatus(SPI_SLAVE_Rx_DMA_FLAG)); + + /* Check the correctness of written data */ + TransferStatus = Buffercmp(SPI_SLAVE_Buffer_Rx, SPI_MASTER_Buffer_Tx, BufferSize); + /* TransferStatus = PASSED, if the transmitted and received data + are equal */ + /* TransferStatus = 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 --------------------------------------------------*/ + /* Enable SPI_SLAVE DMA clock */ + RCC_AHBPeriphClockCmd(SPI_SLAVE_DMA_CLK, ENABLE); + +#ifdef USE_STM3210C_EVAL + /* Enable GPIO clock for SPI_MASTER and SPI_SLAVE */ + RCC_APB2PeriphClockCmd(SPI_MASTER_GPIO_CLK | SPI_SLAVE_GPIO_CLK | + RCC_APB2Periph_AFIO, ENABLE); + + /* Enable SPI_MASTER Periph clock */ + RCC_APB1PeriphClockCmd(SPI_MASTER_CLK, ENABLE); + +#else + /* Enable SPI_MASTER clock and GPIO clock for SPI_MASTER and SPI_SLAVE */ + RCC_APB2PeriphClockCmd(SPI_MASTER_GPIO_CLK | SPI_SLAVE_GPIO_CLK | + SPI_MASTER_CLK, ENABLE); +#endif + /* Enable SPI_SLAVE Periph clock */ + RCC_APB1PeriphClockCmd(SPI_SLAVE_CLK, ENABLE); +} + +/** + * @brief Configures the different GPIO ports. + * @param None + * @retval None + */ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + +#ifdef USE_STM3210C_EVAL + /* Enable SPI3 Pins Software Remapping */ + GPIO_PinRemapConfig(GPIO_Remap_SPI3, ENABLE); + + /* Configure SPI_MASTER pins: SCK and MOSI */ + GPIO_InitStructure.GPIO_Pin = SPI_MASTER_PIN_SCK | SPI_MASTER_PIN_MOSI; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_Init(SPI_MASTER_GPIO, &GPIO_InitStructure); + + /* Configure SPI_MASTER NSS pin */ + GPIO_InitStructure.GPIO_Pin = SPI_MASTER_PIN_NSS; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_Init(SPI_MASTER_GPIO_NSS, &GPIO_InitStructure); + +#else + /* Configure SPI_MASTER pins: NSS, SCK and MOSI */ + GPIO_InitStructure.GPIO_Pin = SPI_MASTER_PIN_NSS | SPI_MASTER_PIN_SCK | SPI_MASTER_PIN_MOSI; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_Init(SPI_MASTER_GPIO, &GPIO_InitStructure); +#endif + + /* Configure SPI_SLAVE pins: NSS, SCK and MISO*/ + GPIO_InitStructure.GPIO_Pin = SPI_SLAVE_PIN_NSS | SPI_SLAVE_PIN_SCK; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + GPIO_Init(SPI_SLAVE_GPIO, &GPIO_InitStructure); + + GPIO_InitStructure.GPIO_Pin = SPI_SLAVE_PIN_MISO; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_Init(SPI_SLAVE_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****/ |