SPI problem in stm32f10x

Posted on January 06, 2017 at 17:40

Hello

Here is my code

#include <stdio.h>

#include <string.h>

#include 'stm32f10x_gpio.h'

#include 'stm32f10x_rcc.h'

#include 'stm32f10x_usart.h'

#include 'stm32f10x_spi.h'

#define SPI_FLASH           SPI3

#define SPI_CLK             RCC_APB1Periph_SPI3

#define SPI_GPIO                GPIOC

#define SPI_GPIO_CLK        RCC_APB2Periph_GPIOC

#define SPI_PIN_SCK         GPIO_Pin_10

#define SPI_PIN_MISO        GPIO_Pin_11

#define SPI_PIN_MOSI        GPIO_Pin_12

void SPIConfig(void){

SPI_InitTypeDef  SPI_InitStructure;

  GPIO_InitTypeDef GPIO_InitStructure;

  /* Enable SPI and GPIO clocks */

  RCC_APB2PeriphClockCmd( SPI_GPIO_CLK , ENABLE);

  GPIO_PinRemapConfig(GPIO_Remap_SPI3, ENABLE);

  /* Configure SPI pins: SCK, MISO and MOSI */

  GPIO_InitStructure.GPIO_Pin = SPI_PIN_SCK | SPI_PIN_MISO | SPI_PIN_MOSI;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init(SPI_GPIO, &GPIO_InitStructure);

    

    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_1Edge;

  SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;

  SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;

  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;

  SPI_InitStructure.SPI_CRCPolynomial = 7;

  SPI_Init(SPI3, &SPI_InitStructure);

  /* Enable the SPI  */

  SPI_Cmd(SPI3, ENABLE);

}

    

void delay(){

    int i,j;

    for(i=0;i<10000;i++)

    for(j=0;j<250;j++);

}

int main(){        

SPIConfig();            

    while(1){            

    delay();delay();

    while (SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_TXE) == RESET);

    SPI_I2S_SendData(SPI3,0xff);    

    }

}

But unfortunately I can't see anything on CLK pin and  after I added 'while (SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_TXE) == RESET);' line to my program it stops in this line.

what is my mistake?

Thanks in advamce