写一个mm32f0144c6p对于w25q128的写数据的完整代码
时间: 2024-03-23 17:37:50 浏览: 30
以下是一个基于MM32F0144C6P的SPI接口和W25Q128的写数据的完整代码:
```c
#include "mm32f014.h"
#define SPI_CS_LOW() GPIOA->BRR = GPIO_Pin_4
#define SPI_CS_HIGH() GPIOA->BSRR = GPIO_Pin_4
void SPI_Init(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_SPI1, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
SPI_InitTypeDef SPI_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_256;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_Cmd(SPI1, ENABLE);
}
void SPI_WriteByte(uint8_t byte)
{
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_SendData(SPI1, byte);
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
SPI_I2S_ReceiveData(SPI1);
}
void SPI_WriteCommand(uint8_t cmd)
{
SPI_CS_LOW();
SPI_WriteByte(cmd);
SPI_CS_HIGH();
}
void SPI_WriteData(uint8_t *buf, uint32_t len)
{
SPI_CS_LOW();
SPI_WriteByte(0x02);
while (len--) {
SPI_WriteByte(*buf++);
}
SPI_CS_HIGH();
}
int main(void)
{
SPI_Init();
uint8_t data[] = {0x01, 0x02, 0x03, 0x04, 0x05};
SPI_WriteData(data, sizeof(data));
while (1);
}
```
在这个代码中,我们首先初始化了SPI接口和W25Q128的CS引脚,然后定义了一些SPI相关的函数,包括写一个字节,写一个命令和写一段数据。最后,在主函数中我们写了一段测试代码来向W25Q128写入一段数据。