/**
******************************************************************************
* @file DMA/SPI_RAM/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.
*
*
© COPYRIGHT 2011 STMicroelectronics
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "platform_config.h"
#include "stm32_eval.h"
/** @addtogroup STM32F10x_StdPeriph_Examples
* @{
*/
/** @addtogroup DMA_SPI_RAM
* @{
*/
/* Private typedef -----------------------------------------------------------*/
typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus;
/* Private define ------------------------------------------------------------*/
#define BufferSize 32
#define CRCPolynomial 7
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
SPI_InitTypeDef SPI_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
uint8_t SPI_MASTER_Buffer_Rx[BufferSize], SPI_SLAVE_Buffer_Rx[BufferSize];
volatile uint8_t SPI_MASTERCRCValue = 0, SPI_SLAVECRCValue = 0;
volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;
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_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);
TestStatus Buffercmp(uint8_t* pBuffer, uint8_t* pBuffer1, 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
*/
/* Configure the STM32_EVAL LED */
STM_EVAL_LEDInit(LED1);
STM_EVAL_LEDInit(LED2);
/* Turn Off LED1 and LED2 */
STM_EVAL_LEDOff(LED1);
STM_EVAL_LEDOff(LED2);
/* System Clocks Configuration */
RCC_Configuration();
/* Configure the GPIO ports */
GPIO_Configuration();
/* SPI_MASTER 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(SPI_MASTER, &SPI_InitStructure);
/* SPI_SLAVE configuration -------------------------------------------------*/
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
SPI_Init(SPI_SLAVE, &SPI_InitStructure);
/* SPI_MASTER_Rx_DMA_Channel configuration ---------------------------------*/
DMA_DeInit(SPI_MASTER_Rx_DMA_Channel);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SPI_MASTER_DR_Base;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)SPI_MASTER_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(SPI_MASTER_Rx_DMA_Channel, &DMA_InitStructure);
/* SPI_MASTER_Tx_DMA_Channel configuration ---------------------------------*/
DMA_DeInit(SPI_MASTER_Tx_DMA_Channel);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SPI_MASTER_DR_Base;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)SPI_MASTER_Buffer_Tx;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_Priority = DMA_Priority_Low;
DMA_Init(SPI_MASTER_Tx_DMA_Channel, &DMA_InitStructure);
/* 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_Priority = DMA_Priority_VeryHigh;
DMA_Init(SPI_SLAVE_Rx_DMA_Channel, &DMA_InitStructure);
/* SPI_SLAVE_Tx_DMA_Channel configuration ----------------------------------*/
DMA_DeInit(SPI_SLAVE_Tx_DMA_Channel);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SPI_SLAVE_DR_Base;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)SPI_SLAVE_Buffer_Tx;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
DMA_Init(SPI_SLAVE_Tx_DMA_Channel, &DMA_InitStructure);
/* Enable SPI_MASTER DMA Tx request */
SPI_I2S_DMACmd(SPI_MASTER, SPI_I2S_DMAReq_Tx, ENABLE);
/* Enable SPI_MASTER DMA Rx request */
SPI_I2S_DMACmd(SPI_MASTER, SPI_I2S_DMAReq_Rx, ENABLE);
/* Enable SPI_SLAVE DMA Tx request */
SPI_I2S_DMACmd(SPI_SLAVE, SPI_I2S_DMAReq_Tx, ENABLE);
/* Enable SPI_SLAVE DMA Rx request */
SPI_I2S_DMACmd(SPI_SLAVE, SPI_I2S_DMAReq_Rx, ENABLE);
/* Enable SPI_MASTER CRC calculation */
SPI_CalculateCRC(SPI_MASTER, ENABLE);
/* Enable SPI_SLAVE CRC calculation */
SPI_CalculateCRC(SPI_SLAVE, ENABLE);
/* Enable SPI_SLAVE */
SPI_Cmd(SPI_SLAVE, ENABLE);
/* Enable SPI_MASTER */
SPI_Cmd(SPI_MASTER, ENABLE);
/* Enable DMA channels */
DMA_Cmd(SPI_MASTER_Rx_DMA_Channel, ENABLE);
DMA_Cmd(SPI_SLAVE_Rx_DMA_Channel, ENABLE);
DMA_Cmd(SPI_SLAVE_Tx_DMA_Channel, ENABLE);
DMA_Cmd(SPI_MASTER_Tx_DMA_Channel, ENABLE);
/* Transfer complete */
while(!DMA_GetFlagStatus(SPI_MASTER_Rx_DMA_FLAG));
while(!DMA_GetFlagStatus(SPI_SLAVE_Rx_DMA_FLAG));
while(!DMA_GetFlagStatus(SPI_SLAVE_Tx_DMA_FLAG));
while(!DMA_GetFlagStatus(SPI_MASTER_Tx_DMA_FLAG));
/* Wait for SPI_MASTER data reception: CRC transmitted by SPI_SLAVE */
while(SPI_I2S_GetFlagStatus(SPI_MASTER, SPI_I2S_FLAG_RXNE) == RESET);
/* Wait for SPI_SLAVE data reception: CRC transmitted by SPI_MASTER */
while(SPI_I2S_GetFlagStatus(SPI_SLAVE, SPI_I2S_FLAG_RXNE) == RESET);
/* Check the correctness of written dada */
TransferStatus1 = Buffercmp(SPI_SLAVE_Buffer_Rx, SPI_MASTER_Buffer_Tx, BufferSize);
TransferStatus2 = Buffercmp(SPI_MASTER_Buffer_Rx, SPI_SLAVE_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 SPI_MASTER CRCR ERROR flag */
if ((SPI_I2S_GetFlagStatus(SPI_MASTER, SPI_FLAG_CRCERR)) != RESET)
{
TransferStatus1 = FAILED;
}
/* Test on the SPI_SLAVE CRCR ERROR flag */
if ((SPI_I2S_GetFlagStatus(SPI_SLAVE, SPI_FLAG_CRCERR)) != RESET)
{
TransferStatus2 = FAILED;
}
/* Read SPI_MASTER received CRC value */
SPI_MASTERCRCValue = SPI_I2S_ReceiveData(SPI_MASTER);
/* Read SPI_SLAVE received CRC value */
SPI_SLAVECRCValue = SPI_I2S_ReceiveData(SPI_SLAVE);
if (TransferStatus1 != FAILED)
{
/* OK */
/* Turn on LD1 */
STM_EVAL_LEDOn(LED1);
}
else
{
/* KO */
/* Turn Off LD1 */
STM_EVAL_LEDOff(LED1);
}
if (TransferStatus2 != FAILED)
{
/* OK */
/* Turn on LD2 */
STM_EVAL_LEDOn(LED2);
}
else
{
/* KO */
/* Turn Off LD2 */
STM_EVAL_LEDOff(LED2);
}
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 DMA1 or/and DMA2 clock */
RCC_AHBPeriphClockCmd(SPI_MASTER_DMA_CLK | 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);
#endif
/* 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 pins: MISO */
GPIO_InitStructure.GPIO_Pin = SPI_MASTER_PIN_MISO;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(SPI_MASTER_GPIO, &GPIO_InitStructure);
/* Configure SPI_SLAVE pins: SCK and MOSI */
GPIO_InitStructure.GPIO_Pin = SPI_SLAVE_PIN_SCK | SPI_SLAVE_PIN_MOSI;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(SPI_SLAVE_GPIO, &GPIO_InitStructure);
/* Configure SPI_SLAVE pins: MISO */
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 pBuffer, pBuffer1: buffers to be compared.
* @param BufferLength: buffer's length
* @retval PASSED: pBuffer identical to pBuffer1
* FAILED: pBuffer differs from pBuffer1
*/
TestStatus Buffercmp(uint8_t* pBuffer, uint8_t* pBuffer1, uint16_t BufferLength)
{
while(BufferLength--)
{
if(*pBuffer != *pBuffer1)
{
return FAILED;
}
pBuffer++;
pBuffer1++;
}
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****/