Posted on January 06, 2017 at 17:40Hello
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
