diff options
Diffstat (limited to 'src/stm32lib/examples/DMA/SPI_RAM/main.c')
| -rwxr-xr-x | src/stm32lib/examples/DMA/SPI_RAM/main.c | 347 |
1 files changed, 347 insertions, 0 deletions
diff --git a/src/stm32lib/examples/DMA/SPI_RAM/main.c b/src/stm32lib/examples/DMA/SPI_RAM/main.c new file mode 100755 index 0000000..5b07e60 --- /dev/null +++ b/src/stm32lib/examples/DMA/SPI_RAM/main.c @@ -0,0 +1,347 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
+* File Name : main.c
+* Author : MCD Application Team
+* Version : V2.0.1
+* Date : 06/13/2008
+* Description : Main program body
+********************************************************************************
+* 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.
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x_lib.h"
+
+/* Private typedef -----------------------------------------------------------*/
+typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus;
+
+/* Private define ------------------------------------------------------------*/
+#define SPI1_DR_Address 0x4001300C
+#define SPI2_DR_Address 0x4000380C
+#define BufferSize 32
+#define CRCPolynomial 7
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+SPI_InitTypeDef SPI_InitStructure;
+DMA_InitTypeDef DMA_InitStructure;
+ErrorStatus HSEStartUpStatus;
+u8 SPI1_Buffer_Rx[BufferSize], SPI2_Buffer_Rx[BufferSize];
+u8 SPI1CRCValue = 0, SPI2CRCValue = 0;
+volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;
+u8 SPI1_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};
+u8 SPI2_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};
+
+/* Private function prototypes -----------------------------------------------*/
+void RCC_Configuration(void);
+void GPIO_Configuration(void);
+void NVIC_Configuration(void);
+TestStatus Buffercmp(u8* pBuffer, u8* pBuffer1, u16 BufferLength);
+
+/* Private functions ---------------------------------------------------------*/
+
+/*******************************************************************************
+* Function Name : main
+* Description : Main program
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+int main(void)
+{
+#ifdef DEBUG
+ debug();
+#endif
+
+ /* System Clocks Configuration */
+ RCC_Configuration();
+
+ /* NVIC configuration */
+ NVIC_Configuration();
+
+ /* Configure the GPIO ports */
+ GPIO_Configuration();
+
+ /* SPI1 configuration ------------------------------------------------------*/
+ 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_8;
+ SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
+ SPI_InitStructure.SPI_CRCPolynomial = CRCPolynomial;
+ SPI_Init(SPI1, &SPI_InitStructure);
+
+ /* SPI2 configuration ------------------------------------------------------*/
+ SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
+ SPI_Init(SPI2, &SPI_InitStructure);
+
+ /* DMA1 Channel2 configuration ----------------------------------------------*/
+ DMA_DeInit(DMA1_Channel2);
+ DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SPI1_DR_Address;
+ DMA_InitStructure.DMA_MemoryBaseAddr = (u32)SPI1_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_High;
+ DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
+ DMA_Init(DMA1_Channel2, &DMA_InitStructure);
+
+ /* DMA1 Channel3 configuration ----------------------------------------------*/
+ DMA_DeInit(DMA1_Channel3);
+ DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SPI1_DR_Address;
+ DMA_InitStructure.DMA_MemoryBaseAddr = (u32)SPI1_Buffer_Tx;
+ DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
+ DMA_InitStructure.DMA_Priority = DMA_Priority_Low;
+ DMA_Init(DMA1_Channel3, &DMA_InitStructure);
+
+ /* DMA1 Channel4 configuration ----------------------------------------------*/
+ DMA_DeInit(DMA1_Channel4);
+ DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SPI2_DR_Address;
+ DMA_InitStructure.DMA_MemoryBaseAddr = (u32)SPI2_Buffer_Rx;
+ DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
+ DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
+ DMA_Init(DMA1_Channel4, &DMA_InitStructure);
+
+ /* DMA1 Channel5 configuration ----------------------------------------------*/
+ DMA_DeInit(DMA1_Channel5);
+ DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SPI2_DR_Address;
+ DMA_InitStructure.DMA_MemoryBaseAddr = (u32)SPI2_Buffer_Tx;
+ DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
+ DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
+ DMA_Init(DMA1_Channel5, &DMA_InitStructure);
+
+ /* Enable SPI1 DMA Tx request */
+ SPI_I2S_DMACmd(SPI1, SPI_I2S_DMAReq_Tx, ENABLE);
+ /* Enable SPI1 DMA Rx request */
+ SPI_I2S_DMACmd(SPI1, SPI_I2S_DMAReq_Rx, ENABLE);
+ /* Enable SPI2 DMA Tx request */
+ SPI_I2S_DMACmd(SPI2, SPI_I2S_DMAReq_Tx, ENABLE);
+ /* Enable SPI2 DMA Rx request */
+ SPI_I2S_DMACmd(SPI2, SPI_I2S_DMAReq_Rx, ENABLE);
+
+ /* Enable SPI1 CRC calculation */
+ SPI_CalculateCRC(SPI1, ENABLE);
+ /* Enable SPI2 CRC calculation */
+ SPI_CalculateCRC(SPI2, ENABLE);
+
+ /* Enable SPI2 */
+ SPI_Cmd(SPI2, ENABLE);
+ /* Enable SPI1 */
+ SPI_Cmd(SPI1, ENABLE);
+
+ /* Enable DMA1 channel5, channel4, channel3 and channel2 */
+ DMA_Cmd(DMA1_Channel2, ENABLE);
+ DMA_Cmd(DMA1_Channel4, ENABLE);
+ DMA_Cmd(DMA1_Channel5, ENABLE);
+ DMA_Cmd(DMA1_Channel3, ENABLE);
+
+ /* Transfer complete */
+ while(!DMA_GetFlagStatus(DMA1_FLAG_TC2));
+ while(!DMA_GetFlagStatus(DMA1_FLAG_TC4));
+ while(!DMA_GetFlagStatus(DMA1_FLAG_TC5));
+ while(!DMA_GetFlagStatus(DMA1_FLAG_TC3));
+
+ /* Wait for SPI1 data reception: CRC transmitted by SPI2 */
+ while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE)==RESET);
+ /* Wait for SPI2 data reception: CRC transmitted by SPI1 */
+ while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE)==RESET);
+
+ /* Check the corectness of written dada */
+ TransferStatus1 = Buffercmp(SPI2_Buffer_Rx, SPI1_Buffer_Tx, BufferSize);
+ TransferStatus2 = Buffercmp(SPI1_Buffer_Rx, SPI2_Buffer_Tx, BufferSize);
+ /* TransferStatus1, TransferStatus2 = PASSED, if the data transmitted and received
+ are correct */
+ /* TransferStatus1, TransferStatus2 = FAILED, if the data transmitted and received
+ are different */
+
+ /* Test on the SPI1 CRCR ERROR flag */
+ if ((SPI_I2S_GetFlagStatus(SPI1, SPI_FLAG_CRCERR)) != RESET)
+ {
+ TransferStatus1 = FAILED;
+ }
+ /* Test on the SPI2 CRCR ERROR flag */
+ if ((SPI_I2S_GetFlagStatus(SPI2, SPI_FLAG_CRCERR)) != RESET)
+ {
+ TransferStatus2 = FAILED;
+ }
+
+ /* Read SPI1 received CRC value */
+ SPI1CRCValue = SPI_I2S_ReceiveData(SPI1);
+ /* Read SPI2 received CRC value */
+ SPI2CRCValue = SPI_I2S_ReceiveData(SPI2);
+
+ while (1)
+ {
+ }
+}
+
+/*******************************************************************************
+* Function Name : RCC_Configuration
+* Description : Configures the different system clocks.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void RCC_Configuration(void)
+{
+ /* RCC system reset(for debug purpose) */
+ RCC_DeInit();
+
+ /* Enable HSE */
+ RCC_HSEConfig(RCC_HSE_ON);
+
+ /* Wait till HSE is ready */
+ HSEStartUpStatus = RCC_WaitForHSEStartUp();
+
+ if(HSEStartUpStatus == SUCCESS)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
+
+ /* Flash 2 wait state */
+ FLASH_SetLatency(FLASH_Latency_2);
+
+ /* HCLK = SYSCLK */
+ RCC_HCLKConfig(RCC_SYSCLK_Div1);
+
+ /* PCLK2 = HCLK/2 */
+ RCC_PCLK2Config(RCC_HCLK_Div2);
+
+ /* PCLK1 = HCLK/2 */
+ RCC_PCLK1Config(RCC_HCLK_Div2);
+
+ /* PLLCLK = 8MHz * 9 = 72 MHz */
+ RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
+
+ /* Enable PLL */
+ RCC_PLLCmd(ENABLE);
+
+ /* Wait till PLL is ready */
+ while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
+
+ /* Wait till PLL is used as system clock source */
+ while(RCC_GetSYSCLKSource() != 0x08)
+ {
+ }
+ }
+
+/* Enable peripheral clocks --------------------------------------------------*/
+ /* Enable DMA1 clock */
+ RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
+ /* Enable GPIOA, GPIOB and SPI1 clock */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
+ RCC_APB2Periph_SPI1, ENABLE);
+ /* Enable SPI2 Periph clock */
+ RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
+}
+
+/*******************************************************************************
+* Function Name : GPIO_Configuration
+* Description : Configures the different GPIO ports.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void GPIO_Configuration(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Configure SPI1 pins: SCK, MISO and MOSI */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+ GPIO_Init(GPIOA, &GPIO_InitStructure);
+
+ /* Configure SPI2 pins: SCK, MISO and MOSI */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
+ GPIO_Init(GPIOB, &GPIO_InitStructure);
+}
+
+/*******************************************************************************
+* Function Name : NVIC_Configuration
+* Description : Configures Vector Table base location.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void NVIC_Configuration(void)
+{
+#ifdef VECT_TAB_RAM
+ /* Set the Vector Table base location at 0x20000000 */
+ NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
+#else /* VECT_TAB_FLASH */
+ /* Set the Vector Table base location at 0x08000000 */
+ NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
+#endif
+}
+
+/*******************************************************************************
+* Function Name : Buffercmp
+* Description : Compares two buffers.
+* Input : - pBuffer, pBuffer1: buffers to be compared.
+* : - BufferLength: buffer's length
+* Output : None
+* Return : PASSED: pBuffer identical to pBuffer1
+* FAILED: pBuffer differs from pBuffer1
+*******************************************************************************/
+TestStatus Buffercmp(u8* pBuffer, u8* pBuffer1, u16 BufferLength)
+{
+ while(BufferLength--)
+ {
+ if(*pBuffer != *pBuffer1)
+ {
+ return FAILED;
+ }
+
+ pBuffer++;
+ pBuffer1++;
+ }
+
+ return PASSED;
+}
+
+#ifdef DEBUG
+/*******************************************************************************
+* Function Name : assert_failed
+* Description : Reports the name of the source file and the source line number
+* where the assert_param error has occurred.
+* Input : - file: pointer to the source file name
+* - line: assert_param error line source number
+* Output : None
+* Return : None
+*******************************************************************************/
+void assert_failed(u8* file, u32 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 2008 STMicroelectronics *****END OF FILE****/
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