📄 main.c
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/******************** (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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