stm32hal库spi读写w25q64
时间: 2023-06-05 09:47:17 浏览: 338
首先,需要初始化SPI接口和W25Q64芯片。在初始化时,需要设置SPI的时钟频率、数据位数、传输模式等参数。同时,还需要设置W25Q64芯片的工作模式、写保护状态等参数。
接下来,可以使用HAL库提供的函数来进行SPI读写操作。例如,可以使用HAL_SPI_Transmit()函数来发送数据,使用HAL_SPI_Receive()函数来接收数据。在读写W25Q64芯片时,需要注意其地址和数据的格式,具体可以参考W25Q64的数据手册。
最后,需要在读写完成后及时关闭SPI接口和W25Q64芯片,以释放资源并保证系统稳定性。
相关问题
stm32F4HAL库spi读写w25q32
下面是使用STM32F4 HAL库进行SPI读写W25Q32的示例代码:
```c
#include "stm32f4xx_hal.h"
#include <string.h>
/* 定义SPI接口 */
SPI_HandleTypeDef hspi1;
/* 定义W25Q32的命令码 */
#define W25Q32_CMD_WRITE_ENABLE 0x06
#define W25Q32_CMD_WRITE_DISABLE 0x04
#define W25Q32_CMD_READ_STATUS_REG1 0x05
#define W25Q32_CMD_READ_STATUS_REG2 0x35
#define W25Q32_CMD_READ_DATA 0x03
#define W25Q32_CMD_PAGE_PROGRAM 0x02
#define W25Q32_CMD_ERASE_SECTOR 0x20
#define W25Q32_CMD_ERASE_CHIP 0xC7
/* 定义W25Q32的状态寄存器 */
typedef struct {
uint8_t busy:1;
uint8_t write_enable_latch:1;
uint8_t block_protection:3;
uint8_t reserved:1;
uint8_t page_size:2;
} w25q32_status_reg1_t;
/* 初始化SPI接口 */
void MX_SPI1_Init(void)
{
/* SPI1 parameter configuration */
hspi1.Instance = SPI1;
hspi1.Init.Mode = SPI_MODE_MASTER;
hspi1.Init.Direction = SPI_DIRECTION_2LINES;
hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi1.Init.NSS = SPI_NSS_SOFT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 10;
if (HAL_SPI_Init(&hspi1) != HAL_OK)
{
Error_Handler();
}
}
/* 读取W25Q32的状态寄存器1 */
void w25q32_read_status_reg1(w25q32_status_reg1_t *status_reg)
{
uint8_t cmd = W25Q32_CMD_READ_STATUS_REG1;
uint8_t data[2];
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, HAL_MAX_DELAY);
HAL_SPI_Receive(&hspi1, data, sizeof(data), HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET);
status_reg->busy = (data[0] & 0x01);
status_reg->write_enable_latch = ((data[0] >> 1) & 0x01);
status_reg->block_protection = ((data[0] >> 2) & 0x07);
status_reg->reserved = ((data[0] >> 5) & 0x01);
status_reg->page_size = ((data[1] >> 6) & 0x03);
}
/* 写入W25Q32的状态寄存器1 */
void w25q32_write_status_reg1(w25q32_status_reg1_t *status_reg)
{
uint8_t cmd = W25Q32_CMD_WRITE_ENABLE;
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET);
cmd = W25Q32_CMD_PAGE_PROGRAM;
uint8_t data[2] = {0};
data[0] |= (status_reg->busy & 0x01);
data[0] |= (status_reg->write_enable_latch & 0x01) << 1;
data[0] |= (status_reg->block_protection & 0x07) << 2;
data[0] |= (status_reg->reserved & 0x01) << 5;
data[1] |= (status_reg->page_size & 0x03) << 6;
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, HAL_MAX_DELAY);
HAL_SPI_Transmit(&hspi1, data, sizeof(data), HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET);
}
/* 写入W25Q32的一页数据 */
void w25q32_write_page(uint32_t addr, uint8_t *data, uint32_t len)
{
uint8_t cmd = W25Q32_CMD_WRITE_ENABLE;
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET);
cmd = W25Q32_CMD_PAGE_PROGRAM;
uint8_t addr_buf[3];
addr_buf[0] = (addr >> 16) & 0xFF;
addr_buf[1] = (addr >> 8) & 0xFF;
addr_buf[2] = addr & 0xFF;
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, HAL_MAX_DELAY);
HAL_SPI_Transmit(&hspi1, addr_buf, sizeof(addr_buf), HAL_MAX_DELAY);
HAL_SPI_Transmit(&hspi1, data, len, HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET);
}
/* 读取W25Q32的一页数据 */
void w25q32_read_page(uint32_t addr, uint8_t *data, uint32_t len)
{
uint8_t cmd = W25Q32_CMD_READ_DATA;
uint8_t addr_buf[3];
addr_buf[0] = (addr >> 16) & 0xFF;
addr_buf[1] = (addr >> 8) & 0xFF;
addr_buf[2] = addr & 0xFF;
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, HAL_MAX_DELAY);
HAL_SPI_Transmit(&hspi1, addr_buf, sizeof(addr_buf), HAL_MAX_DELAY);
HAL_SPI_Receive(&hspi1, data, len, HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET);
}
/* 擦除W25Q32的一个扇区 */
void w25q32_erase_sector(uint32_t addr)
{
uint8_t cmd = W25Q32_CMD_WRITE_ENABLE;
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET);
cmd = W25Q32_CMD_ERASE_SECTOR;
uint8_t addr_buf[3];
addr_buf[0] = (addr >> 16) & 0xFF;
addr_buf[1] = (addr >> 8) & 0xFF;
addr_buf[2] = addr & 0xFF;
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, HAL_MAX_DELAY);
HAL_SPI_Transmit(&hspi1, addr_buf, sizeof(addr_buf), HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET);
}
/* 擦除W25Q32的整个芯片 */
void w25q32_erase_chip(void)
{
uint8_t cmd = W25Q32_CMD_WRITE_ENABLE;
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET);
cmd = W25Q32_CMD_ERASE_CHIP;
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET);
}
int main(void)
{
/* 初始化HAL库 */
HAL_Init();
/* 初始化SPI接口 */
MX_SPI1_Init();
/* 定义状态寄存器并读取 */
w25q32_status_reg1_t status_reg;
w25q32_read_status_reg1(&status_reg);
/* 写入一页数据 */
uint8_t data[256];
memset(data, 0xFF, sizeof(data));
w25q32_write_page(0x000000, data, sizeof(data));
/* 读取一页数据 */
uint8_t read_data[256];
w25q32_read_page(0x000000, read_data, sizeof(read_data));
/* 擦除一个扇区 */
w25q32_erase_sector(0x000000);
/* 擦除整个芯片 */
w25q32_erase_chip();
while (1)
{
}
}
```
需要注意的是,上述代码中的W25Q32的命令码和状态寄存器的定义仅适用于W25Q32型号的Flash芯片,如果需要使用其他型号的Flash芯片,需要根据数据手册自行修改。同时,还需要根据实际硬件连接情况修改SPI接口的初始化代码。
stm32f427HAL库spi3读写w25q32
以下是使用STM32F427 HAL库进行SPI3读写W25Q32的基本步骤:
1. 配置SPI3
```c
hspi3.Instance = SPI3;
hspi3.Init.Mode = SPI_MODE_MASTER;
hspi3.Init.Direction = SPI_DIRECTION_2LINES;
hspi3.Init.DataSize = SPI_DATASIZE_8BIT;
hspi3.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi3.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi3.Init.NSS = SPI_NSS_SOFT;
hspi3.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
hspi3.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi3.Init.TIMode = SPI_TIMODE_DISABLE;
hspi3.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi3.Init.CRCPolynomial = 10;
HAL_SPI_Init(&hspi3);
```
2. 配置GPIO引脚
```c
GPIO_InitStruct.Pin = GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
```
3. 读取ID
```c
uint8_t rxData[2];
uint8_t txData[2];
txData[0] = 0x9F; // 发送读取ID命令
txData[1] = 0x00;
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_4, GPIO_PIN_RESET); // 使能W25Q32
HAL_SPI_TransmitReceive(&hspi3, txData, rxData, 2, 100); // 发送命令并接收数据
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_4, GPIO_PIN_SET); // 禁用W25Q32
```
4. 读取数据
```c
uint8_t rxData[256];
uint8_t txData[256];
txData[0] = 0x03; // 发送读取数据命令
txData[1] = 0x00;
txData[2] = 0x00;
txData[3] = 0x00;
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_4, GPIO_PIN_RESET); // 使能W25Q32
HAL_SPI_Transmit(&hspi3, txData, 4, 1000); // 发送命令
HAL_SPI_Receive(&hspi3, rxData, 256, 1000); // 接收数据
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_4, GPIO_PIN_SET); // 禁用W25Q32
```
5. 写入数据
```c
uint8_t txData[256];
txData[0] = 0x06; // 发送写使能命令
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_4, GPIO_PIN_RESET); // 使能W25Q32
HAL_SPI_Transmit(&hspi3, txData, 1, 1000); // 发送命令
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_4, GPIO_PIN_SET); // 禁用W25Q32
txData[0] = 0x02; // 发送写数据命令
txData[1] = 0x00;
txData[2] = 0x00;
txData[3] = 0x00;
for (int i = 0; i < 256; i++) {
txData[4 + i] = i; // 写入数据
}
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_4, GPIO_PIN_RESET); // 使能W25Q32
HAL_SPI_Transmit(&hspi3, txData, 260, 1000); // 发送命令和数据
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_4, GPIO_PIN_SET); // 禁用W25Q32
```