/**
******************************************************************************
* @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.
*
*
© COPYRIGHT 2011 STMicroelectronics
******************************************************************************
*/
/* 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****/