lab09.c

#include "stm32f4xx_conf.h"
#include "stm32f4_discovery_lis302dl.h"

int lab09(void)
{
	SystemInit();

	/* Enable the SPI periph */
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
	/* Enable SCK, MOSI and MISO GPIO clocks */
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
	/* Enable CS GPIO clock */
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOE, ENABLE);

	// SCK
	GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_SPI2);
	// MISO
	GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_SPI2);
	// MOSI
	GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_SPI2);

	GPIO_InitTypeDef GPIO_InitStructure;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

	/* SPI SCK pin configuration */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
	GPIO_Init(GPIOB, &GPIO_InitStructure);

	/* SPI MOSI pin configuration */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
	GPIO_Init(GPIOB, &GPIO_InitStructure);

	/* SPI MISO pin configuration */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
	GPIO_Init(GPIOB, &GPIO_InitStructure);

	/* Configure GPIO PIN for Lis Chip select */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOE, &GPIO_InitStructure);

	/* Deselect : Chip Select high */
	GPIO_SetBits(GPIOE, GPIO_Pin_3);

	/* SPI configuration -------------------------------------------------------*/
	SPI_InitTypeDef SPI_InitStructure;
	SPI_I2S_DeInit(SPI2);
	SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
	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_InitStructure.SPI_Mode = SPI_Mode_Master;
	SPI_Init(SPI2, &SPI_InitStructure);

	/* Enable SPI2 */
	SPI_Cmd(SPI2, ENABLE);

	SPI_I2S_SendData(SPI2, 0x3);
	while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET);

	uint16_t receive = SPI_I2S_ReceiveData(SPI2);

	for(;;)
	{


	}

	return 0;
}