GD25Q256DYIG 驱动

GD25Q256DYIG 是一款由GigaDevice（兆易创新）生产的串行闪存芯片，它采用SPI接口进行通信。下面是一个简单的示例代码，用于操作GD25Q256DYIG芯片：

#include "stm32h7xx_hal.h"
#include "spi.h"

#define SPI_HANDLE hspi1

#define GD25Q256DYIG_CS_GPIO_Port GPIOA
#define GD25Q256DYIG_CS_Pin GPIO_PIN_4

void GD25Q256DYIG_Init(void)
{
  // 初始化SPI接口
  HAL_SPI_Init(&SPI_HANDLE);
  
  // 初始化片选引脚
  HAL_GPIO_WritePin(GD25Q256DYIG_CS_GPIO_Port, GD25Q256DYIG_CS_Pin, GPIO_PIN_SET);
}

void GD25Q256DYIG_Read(uint32_t address, uint8_t* data, uint32_t size)
{
  // 使能片选
  HAL_GPIO_WritePin(GD25Q256DYIG_CS_GPIO_Port, GD25Q256DYIG_CS_Pin, GPIO_PIN_RESET);
  
  // 发送读指令和地址
  uint8_t cmd[4] = {0x03, (uint8_t)(address >> 16), (uint8_t)(address >> 8), (uint8_t)address};
  HAL_SPI_Transmit(&SPI_HANDLE, cmd, sizeof(cmd), HAL_MAX_DELAY);
  
  // 接收数据
  HAL_SPI_Receive(&SPI_HANDLE, data, size, HAL_MAX_DELAY);
  
  // 禁用片选
  HAL_GPIO_WritePin(GD25Q256DYIG_CS_GPIO_Port, GD25Q256DYIG_CS_Pin, GPIO_PIN_SET);
}

void GD25Q256DYIG_Write(uint32_t address, uint8_t* data, uint32_t size)
{
  // 使能片选
  HAL_GPIO_WritePin(GD25Q256DYIG_CS_GPIO_Port, GD25Q256DYIG_CS_Pin, GPIO_PIN_RESET);
  
  // 发送写使能指令
  uint8_t cmd[] = {0x06};
  HAL_SPI_Transmit(&SPI_HANDLE, cmd, sizeof(cmd), HAL_MAX_DELAY);
  
  // 发送写指令和地址
  uint8_t writeCmd[4] = {0x02, (uint8_t)(address >> 16), (uint8_t)(address >> 8), (uint8_t)address};
  HAL_SPI_Transmit(&SPI_HANDLE, writeCmd, sizeof(writeCmd), HAL_MAX_DELAY);
  
  // 发送数据
  HAL_SPI_Transmit(&SPI_HANDLE, data, size, HAL_MAX_DELAY);
  
  // 禁用片选
  HAL_GPIO_WritePin(GD25Q256DYIG_CS_GPIO_Port, GD25Q256DYIG_CS_Pin, GPIO_PIN_SET);
}

在使用这段代码之前，需要根据实际情况配置SPI接口和片选引脚。可以使用CubeMX来配置SPI外设，并生成对应的初始化代码。还可以参考GD25Q256DYIG芯片的数据手册来了解更多关于命令、地址和数据传输的详细信息。