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GigaDevice(兆易创新)GD25Q64CSJGR 64Mbit FLASH

news 2025/9/6 20:35:13

使用的是 STM32G070RBT6,

SPI1

PA12 -> MOSI

PA11->MISO

PA10->CS

PD8->SCK

FLASH代码

#include "flash.h"// 选中 Flash（拉低 CS#）
void GD25Q64_Select(void) {HAL_GPIO_WritePin(FLASH_CS_GPIO_Port, FLASH_CS_Pin, GPIO_PIN_RESET);//HAL_Delay(0);
}// 取消选中 Flash（拉高 CS#）
void GD25Q64_Deselect(void) {HAL_GPIO_WritePin(FLASH_CS_GPIO_Port, FLASH_CS_Pin, GPIO_PIN_SET);//HAL_Delay(0);
}// 发送 1 字节命令，并返回 Flash 响应
uint8_t GD25Q64_SendCmd(uint8_t cmd) {uint8_t rx_data = 0;HAL_SPI_TransmitReceive(&hspi1, &cmd, &rx_data, 1, 100); // 超时 100msreturn rx_data;
}// 等待 Flash 忙状态清除（擦除/编程后必须等待）
void GD25Q64_WaitBusy(void) {uint8_t status = 0;GD25Q64_Select();GD25Q64_SendCmd(CMD_READ_STATUS);do {status = GD25Q64_SendCmd(0xFF); // 持续读取状态寄存器} while (status & 0x01); // 忙标志位（BIT0）为 1 表示忙GD25Q64_Deselect();
}// 读取 Flash ID（验证通信）
void GD25Q64_ReadID(uint8_t *mfg_id, uint16_t *dev_id) {if (!mfg_id || !dev_id) return;uint8_t tx[1] = {0x9F}; // JEDEC读ID命令uint8_t rx[4] = {0};    // 接收缓冲区（1字节命令+3字节ID）// 片选拉低HAL_GPIO_WritePin(FLASH_CS_GPIO_Port, FLASH_CS_Pin, GPIO_PIN_RESET);// 发送命令并接收ID（一次性完成，避免时序间断）HAL_SPI_TransmitReceive(&hspi1, tx, rx, 4, 100);// 片选拉高HAL_GPIO_WritePin(FLASH_CS_GPIO_Port, FLASH_CS_Pin, GPIO_PIN_SET);// 解析结果（9F命令的ID在第2-4字节）*mfg_id = rx[1];          // 制造商ID（C8）*dev_id = (rx[2] << 8) | rx[3]; // 设备ID（4017）
/*if (!mfg_id || !dev_id) return;GD25Q64_Select();GD25Q64_SendCmd(CMD_READ_ID);// 发送固定地址 0x000000（用于 ID 读取）uint8_t addr[3] = {0x00, 0x00, 0x00};HAL_SPI_Transmit(&hspi1, addr, 3, 100);// 接收 1 字节制造商 ID 和 2 字节设备 IDuint8_t id_buf[3] = {0};HAL_SPI_Receive(&hspi1, id_buf, 3, 100);GD25Q64_Deselect();*mfg_id = id_buf[0];          // 兆易创新：0xC8*dev_id = (id_buf[1] << 8) | id_buf[2]; // GD25Q64：0x4017
*/
}// 写使能（擦除/编程前必须调用）
void GD25Q64_WriteEnable(void) {GD25Q64_Select();uint8_t cmd = CMD_WRITE_ENABLE;HAL_SPI_Transmit(&hspi1, &cmd, 1, 100);GD25Q64_Deselect();
}// 解锁Flash（清除写保护）
void GD25Q64_Unlock(void) {GD25Q64_WriteEnable();  // 解锁前必须先写使能GD25Q64_Select();uint8_t cmd[3] = {CMD_UNPROTECT, 0x00, 0x00};HAL_SPI_Transmit(&hspi1, cmd, 3, 100);GD25Q64_Deselect();GD25Q64_WaitBusy();
}// 扇区擦除（4KB）
HAL_StatusTypeDef GD25Q64_EraseSector(uint32_t sector_addr) {if (sector_addr > 0x7FFFFF || (sector_addr % 4096) != 0) return HAL_ERROR;GD25Q64_WriteEnable();  // 擦除前必须写使能GD25Q64_Select();uint8_t cmd[4] = {CMD_SECTOR_ERASE,(uint8_t)(sector_addr >> 16),(uint8_t)(sector_addr >> 8),(uint8_t)sector_addr};HAL_StatusTypeDef status = HAL_SPI_Transmit(&hspi1, cmd, 4, 100);GD25Q64_Deselect();if (status == HAL_OK) {GD25Q64_WaitBusy();  // 等待擦除完成（约100ms）}return status;
}// 页编程（最大256字节）
HAL_StatusTypeDef GD25Q64_ProgramPage(uint32_t page_addr, uint8_t *data, uint32_t len) {if (!data || page_addr > 0x7FFFFF || len > 256 || (page_addr % 256) != 0) return HAL_ERROR;GD25Q64_WriteEnable();  // 编程前必须写使能GD25Q64_Select();uint8_t cmd[4] = {CMD_PAGE_PROGRAM,(uint8_t)(page_addr >> 16),(uint8_t)(page_addr >> 8),(uint8_t)page_addr};HAL_StatusTypeDef status = HAL_SPI_Transmit(&hspi1, cmd, 4, 100);if (status != HAL_OK) {GD25Q64_Deselect();return status;}status = HAL_SPI_Transmit(&hspi1, data, len, 1000);GD25Q64_Deselect();if (status == HAL_OK) {GD25Q64_WaitBusy();  // 等待编程完成（约1ms）}return status;
}// 读取数据
HAL_StatusTypeDef GD25Q64_ReadData(uint32_t addr, uint8_t *buf, uint32_t len) {if (!buf || addr > 0x7FFFFF || len == 0) return HAL_ERROR;GD25Q64_Select();uint8_t cmd[4] = {CMD_READ,(uint8_t)(addr >> 16),(uint8_t)(addr >> 8),(uint8_t)addr};HAL_StatusTypeDef status = HAL_SPI_Transmit(&hspi1, cmd, 4, 100);if (status != HAL_OK) {GD25Q64_Deselect();return status;}status = HAL_SPI_Receive(&hspi1, buf, len, 1000);GD25Q64_Deselect();return status;
}

#ifndef _FLASH_#define _FLASH_#include "main.h"extern SPI_HandleTypeDef hspi1;#define FLASH_CS_GPIO_Port  GPIOA
#define FLASH_CS_Pin        GPIO_PIN_10
#define FLASH_SCK_GPIO_Port GPIOD
#define FLASH_SCK_Pin       GPIO_PIN_8
#define FLASH_MOSI_GPIO_Port GPIOA
#define FLASH_MOSI_Pin      GPIO_PIN_12
#define FLASH_MISO_GPIO_Port GPIOA
#define FLASH_MISO_Pin      GPIO_PIN_11// GD25Q64 命令定义
#define CMD_READ_ID         0x90  // 读取 ID 命令
#define CMD_READ            0x03  // 读取数据命令
#define CMD_PAGE_PROGRAM    0x02  // 页编程命令（写数据）
#define CMD_SECTOR_ERASE    0x20  // 扇区擦除命令（4KB）
#define CMD_CHIP_ERASE      0xC7  // 整片擦除命令
#define CMD_READ_STATUS     0x05  // 读取状态寄存器命令
// 命令定义（需在flash.h中声明）#define CMD_WRITE_ENABLE    0x06    // 写使能
#define CMD_UNPROTECT       0x98    // 解除保护// 读取 Flash ID（验证通信）
void GD25Q64_ReadID(uint8_t *mfg_id, uint16_t *dev_id);
// 从指定地址读取数据
HAL_StatusTypeDef GD25Q64_ReadData(uint32_t addr, uint8_t *buf, uint32_t len);
// 扇区擦除（4KB，地址需对齐到扇区起始）
HAL_StatusTypeDef GD25Q64_EraseSector(uint32_t sector_addr);
// 页编程（写数据，一页 256 字节，地址需对齐到页起始）
HAL_StatusTypeDef GD25Q64_ProgramPage(uint32_t page_addr, uint8_t *data, uint32_t len);
// 解锁Flash（清除写保护）
void GD25Q64_Unlock(void);#endif