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Question asked by allen.rob on Sep 10, 2013

I'm using an STM32VL Discovery board and I'm trying to configure the SPI1 port to send data. I couldn't find any examples for this board, only for the F4 Discovery, so I'm a bit stuck. I've run the following code and put an oscilloscope on PA5,6,7 and can't see any data at all. I think the problem might be in re-mapping the port, as I can't find anyway or moving it from GPIO to SPI. Any help would be much appreciated.

#include "stdio.h"
#include <stm32f10x_spi.h>
#include <stm32f10x_gpio.h>
#include <stm32f10x_rcc.h>
int main(void)
                    //Set up clocks
    RCC_APB2PeriphClockCmd(GPIOA, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
    GPIO_InitTypeDef GPIO_InitStructure;
        //Attempt at port re-map, doesn't seem to help
        GPIO_PinRemapConfig(GPIO_Remap_SPI1, ENABLE);
        // Configure SPI_MASTER pins: SCK, MISO and MOSI //
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
        GPIO_Init(PORT_SPI_COMMS, &GPIO_InitStructure);
 GPIO_InitTypeDef GPIO_InitStruct;
 GPIO_InitTypeDef gpio;
 SPI_InitTypeDef SPI_InitStructure;
 GPIO_InitTypeDef GPIO_InitStructure1;
 GPIO_StructInit (& GPIO_InitStructure1);
 SPI_StructInit (& SPI_InitStructure);
//Configure SPI1 master mode
 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_High;
  SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
  SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
  SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;
  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
  SPI_InitStructure.SPI_CRCPolynomial = 7;
  SPI_Init(SPI1, &SPI_InitStructure);
  SPI_Cmd(SPI1, ENABLE);           /* Enable the SPI  */
     while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
     SPI_I2S_SendData(SPI1, 0xFFFF);