Posted on September 10, 2013 at 15:49
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(1)
{
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_SendData(SPI1, 0xFFFF);
}
}
#32
