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.h文件
#ifndef __SPI_H
#define __SPI_H
#include "stm32f10x.h"
/*SPI ????-??****************************/
#define FLASH_SPIx SPI1
#define FLASH_SPI_APBxClock_FUN RCC_APB2PeriphClockCmd
#define FLASH_SPI_CLK RCC_APB2Periph_SPI1
//CS(NSS)?? ????? GPIO ??
#define FLASH_SPI_CS_APBxClock_FUN RCC_APB2PeriphClockCmd
#define FLASH_SPI_CS_CLK RCC_APB2Periph_GPIOB
#define FLASH_SPI_CS_PORT GPIOB
#define FLASH_SPI_CS_PIN GPIO_Pin_0
//SCK ??
#define FLASH_SPI_SCK_APBxClock_FUN RCC_APB2PeriphClockCmd
#define FLASH_SPI_SCK_CLK RCC_APB2Periph_GPIOA
#define FLASH_SPI_SCK_PORT GPIOA
#define FLASH_SPI_SCK_PIN GPIO_Pin_5
//MISO ??
#define FLASH_SPI_MISO_APBxClock_FUN RCC_APB2PeriphClockCmd
#define FLASH_SPI_MISO_CLK RCC_APB2Periph_GPIOA
#define FLASH_SPI_MISO_PORT GPIOA
#define FLASH_SPI_MISO_PIN GPIO_Pin_6
//MOSI ??
#define FLASH_SPI_MOSI_APBxClock_FUN RCC_APB2PeriphClockCmd#define FLASH_SPI_MOSI_CLK RCC_APB2Periph_GPIOA
#define FLASH_SPI_MOSI_PORT GPIOA
#define FLASH_SPI_MOSI_PIN GPIO_Pin_7
#define FLASH_SPI_CS_LOW() GPIO_ResetBits( FLASH_SPI_CS_PORT, FLASH_SPI_CS_PIN )
#define FLASH_SPI_CS_HIGH() GPIO_SetBits( FLASH_SPI_CS_PORT, FLASH_SPI_CS_PIN )
void SPI_FLASH_Init(void);
void SPI_FLASH_SendByte(u8 add,u8 byte);
#endif
spi.c文件
#include "spi.h"
#include "stm32f10x.h"
void SPI_FLASH_Init(void)
{
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
FLASH_SPI_APBxClock_FUN ( FLASH_SPI_CLK, ENABLE );
FLASH_SPI_CS_APBxClock_FUN ( FLASH_SPI_CS_CLK|FLASH_SPI_SCK_CLK|
FLASH_SPI_MISO_PIN|FLASH_SPI_MOSI_PIN, ENABLE );
GPIO_InitStructure.GPIO_Pin = FLASH_SPI_CS_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(FLASH_SPI_CS_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FLASH_SPI_SCK_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(FLASH_SPI_SCK_PORT, &GPIO_InitStructure);
/* ?? SPI ? MF103-????*/
GPIO_InitStructure.GPIO_Pin = FLASH_SPI_MISO_PIN;
GPIO_Init(FLASH_SPI_MISO_PORT, &GPIO_InitStructure);
/* ?? SPI ? MOSI ??*/
GPIO_InitStructure.GPIO_Pin = FLASH_SPI_MOSI_PIN;
GPIO_Init(FLASH_SPI_MOSI_PORT, &GPIO_InitStructure);
/* ???? FLASH: CS ?????*/
FLASH_SPI_CS_HIGH();
//?????,???? SPI ???????
SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx;
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(FLASH_SPIx, &SPI_InitStructure);
/* ?? SPI */
SPI_Cmd(FLASH_SPIx, ENABLE);
}
void SPI_FLASH_SendByte(u8 add,u8 byte)
{
FLASH_SPI_CS_LOW();
SPI_I2S_SendData(FLASH_SPIx, add);
SPI_I2S_SendData(FLASH_SPIx, byte);
FLASH_SPI_CS_HIGH();
}
主函數(shù)
#include "stm32f10x.h"
#include "spi.h"
int main(void)
{
u8 i;
void SPI_FLASH_Init();
SPI_FLASH_SendByte(0x09, 0x00); //????:BCD?
SPI_FLASH_SendByte(0x0a, 0x03); //??
SPI_FLASH_SendByte(0x0b, 0x07); //????;8??????
SPI_FLASH_SendByte(0x0c, 0x01); //????:0,????:1
SPI_FLASH_SendByte(0x0f, 0x01); //????:1;????,????:0
while(1)
{
for(i=1;i<9;i++)
SPI_FLASH_SendByte(i,0xfe);
}
}
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