294 lines
7.2 KiB
C
294 lines
7.2 KiB
C
#include "bsp_w25q.h"
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#include "spi.h"
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#include <string.h>
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#include "app_leakage.h"
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/* spi flash 片选引脚 - pb12 */
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#define W25Q32_CS_LOW() HAL_GPIO_WritePin(SPI2_CS_GPIO_Port, SPI2_CS_Pin, GPIO_PIN_RESET)
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#define W25Q32_CS_HIGH() HAL_GPIO_WritePin(SPI2_CS_GPIO_Port, SPI2_CS_Pin, GPIO_PIN_SET)
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/* spi 传输函数 */
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static void w25q32_spi_transmit(uint8_t *data, uint16_t size) {
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HAL_SPI_Transmit(&hspi2, data, size, HAL_MAX_DELAY);
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}
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static void w25q32_spi_receive(uint8_t *data, uint16_t size) {
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HAL_SPI_Receive(&hspi2, data, size, HAL_MAX_DELAY);
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}
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static uint8_t w25q32_spi_transmit_receive(uint8_t data) {
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uint8_t rx_data;
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HAL_SPI_TransmitReceive(&hspi2, &data, &rx_data, 1, HAL_MAX_DELAY);
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return rx_data;
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}
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/* 内部函数声明 */
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static void w25q32_init(void);
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static void w25q32_read(uint32_t addr, uint8_t *data, uint32_t len);
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static void w25q32_write(uint32_t addr, uint8_t *data, uint32_t len);
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static void w25q32_chip_erase(void);
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static void w25q32_write_enable(void);
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static void w25q32_write_disable(void);
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static uint8_t w25q32_read_status_reg(void);
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static void w25q32_wait_for_write_end(void);
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static void w25q32_block_erase(uint32_t block_addr);
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static void w25q32_page_write(uint32_t addr, uint8_t *data, uint16_t len);
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static uint8_t w25q32_read_id(void);
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static void w25q32_power_down(void);
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static void w25q32_wake_up(void);
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/* w25q32 对象实例 */
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w25q32_t w25q32 = {
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.init = w25q32_init,
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.read = w25q32_read,
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.write = w25q32_write,
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.chip_erase = w25q32_chip_erase,
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.sector_erase = w25q32_sector_erase,
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};
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/* 从W25Q32读取设备信息到app_leakage */
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static void gui_tjc_hmi_read_device_info_from_w25q(void)
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{
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/* 创建一个临时缓冲区 */
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app_leakage_sub_device_flash_data_t temp_buffer[APP_LEAKAGE_SUB_DEVICE_NUM];
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/* 一次性读取所有设备信息 */
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w25q32.read(W25Q32_DEVICE_INFO_ADDR,
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(uint8_t*)temp_buffer,
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DEVICE_INFO_STORAGE_SIZE);
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/* 检查数据有效性 */
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uint8_t data_valid = 1;
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for(int i = 0; i < APP_LEAKAGE_SUB_DEVICE_NUM; i++)
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{
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/* 如果所有字段都是0xFF，说明是空数据 */
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if(temp_buffer[i].state == 0xFF &&
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temp_buffer[i].com == 0xFF &&
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temp_buffer[i].modbus_id == 0xFF)
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{
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data_valid = 0;
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break;
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}
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}
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if(data_valid)
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{
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/* 复制到app_leakage结构体中 */
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for(int i = 0; i < APP_LEAKAGE_SUB_DEVICE_NUM; i++)
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{
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leakage.sub_device_data[i].flash_data = temp_buffer[i];
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}
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}
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else
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{
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/* Flash为空，初始化设备信息为默认值 */
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for(int i = 0; i < APP_LEAKAGE_SUB_DEVICE_NUM; i++)
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{
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memset(&leakage.sub_device_data[i].flash_data, 0,
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sizeof(app_leakage_sub_device_flash_data_t));
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leakage.sub_device_data[i].flash_data.state = DISABLE;
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}
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}
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}
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/* 初始化函数 */
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static void w25q32_init(void) {
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W25Q32_CS_HIGH(); /* 初始时片选拉高 */
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w25q32_wake_up(); /* 唤醒芯片 */
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gui_tjc_hmi_read_device_info_from_w25q();
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}
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/* 读取芯片id */
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static uint8_t w25q32_read_id(void) {
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uint8_t id = 0;
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uint8_t cmd = W25Q32_JEDEC_ID;
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W25Q32_CS_LOW();
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w25q32_spi_transmit(&cmd, 1);
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w25q32_spi_receive(&id, 1); /* 忽略前两个字节 */
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w25q32_spi_receive(&id, 1);
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w25q32_spi_receive(&id, 1); /* 设备id在第三个字节 */
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W25Q32_CS_HIGH();
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return id;
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}
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/* 写使能 */
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static void w25q32_write_enable(void) {
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uint8_t cmd = W25Q32_WRITE_ENABLE;
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W25Q32_CS_LOW();
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w25q32_spi_transmit(&cmd, 1);
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W25Q32_CS_HIGH();
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}
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/* 写禁止 */
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static void w25q32_write_disable(void) {
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uint8_t cmd = W25Q32_WRITE_DISABLE;
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W25Q32_CS_LOW();
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w25q32_spi_transmit(&cmd, 1);
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W25Q32_CS_HIGH();
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}
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/* 读取状态寄存器 */
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static uint8_t w25q32_read_status_reg(void) {
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uint8_t status;
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uint8_t cmd = W25Q32_READ_STATUS_REG1;
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W25Q32_CS_LOW();
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w25q32_spi_transmit(&cmd, 1);
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status = w25q32_spi_transmit_receive(0x00);
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W25Q32_CS_HIGH();
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return status;
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}
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/* 等待写入完成 */
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static void w25q32_wait_for_write_end(void) {
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while (w25q32_read_status_reg() & W25Q32_STATUS_BUSY) {
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/* 可添加延时或看门狗喂狗 */
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}
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}
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/* 扇区擦除 (4kb) */
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void w25q32_sector_erase(uint32_t sector_addr)
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{
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uint8_t cmd[4];
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/* 确保地址是4k对齐 */
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sector_addr &= ~(W25Q32_SECTOR_SIZE - 1);
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w25q32_write_enable();
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cmd[0] = W25Q32_SECTOR_ERASE;
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cmd[1] = (sector_addr >> 16) & 0xFF;
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cmd[2] = (sector_addr >> 8) & 0xFF;
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cmd[3] = sector_addr & 0xFF;
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W25Q32_CS_LOW();
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w25q32_spi_transmit(cmd, 4);
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W25Q32_CS_HIGH();
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w25q32_wait_for_write_end();
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}
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/* 块擦除 (64kb) */
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static void w25q32_block_erase(uint32_t block_addr) {
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uint8_t cmd[4];
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/* 确保地址是64k对齐 */
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block_addr &= ~(W25Q32_BLOCK_SIZE - 1);
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w25q32_write_enable();
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cmd[0] = W25Q32_BLOCK_ERASE_64K;
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cmd[1] = (block_addr >> 16) & 0xFF;
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cmd[2] = (block_addr >> 8) & 0xFF;
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cmd[3] = block_addr & 0xFF;
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W25Q32_CS_LOW();
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w25q32_spi_transmit(cmd, 4);
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W25Q32_CS_HIGH();
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w25q32_wait_for_write_end();
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}
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/* 整片擦除 */
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static void w25q32_chip_erase(void) {
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uint8_t cmd = W25Q32_CHIP_ERASE;
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w25q32_write_enable();
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W25Q32_CS_LOW();
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w25q32_spi_transmit(&cmd, 1);
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W25Q32_CS_HIGH();
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w25q32_wait_for_write_end();
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}
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/* 页写入 (最大256字节) */
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static void w25q32_page_write(uint32_t addr, uint8_t *data, uint16_t len) {
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uint8_t cmd[4];
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if (len > W25Q32_PAGE_SIZE) {
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len = W25Q32_PAGE_SIZE;
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}
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w25q32_write_enable();
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cmd[0] = W25Q32_PAGE_PROGRAM;
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cmd[1] = (addr >> 16) & 0xFF;
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cmd[2] = (addr >> 8) & 0xFF;
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cmd[3] = addr & 0xFF;
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W25Q32_CS_LOW();
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w25q32_spi_transmit(cmd, 4);
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w25q32_spi_transmit(data, len);
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W25Q32_CS_HIGH();
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w25q32_wait_for_write_end();
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}
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/* 任意长度写入 */
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static void w25q32_write(uint32_t addr, uint8_t *data, uint32_t len) {
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uint32_t page_remaining;
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uint32_t offset = 0;
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while (len > 0) {
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/* 计算当前页剩余字节数 */
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page_remaining = W25Q32_PAGE_SIZE - (addr % W25Q32_PAGE_SIZE);
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/* 本次写入的长度 */
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uint32_t write_len = (len < page_remaining) ? len : page_remaining;
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/* 写入一页数据 */
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w25q32_page_write(addr, &data[offset], write_len);
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/* 更新地址和偏移 */
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addr += write_len;
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offset += write_len;
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len -= write_len;
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}
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}
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/* 读取数据 */
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static void w25q32_read(uint32_t addr, uint8_t *data, uint32_t len) {
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uint8_t cmd[4];
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cmd[0] = W25Q32_READ_DATA;
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cmd[1] = (addr >> 16) & 0xFF;
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cmd[2] = (addr >> 8) & 0xFF;
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cmd[3] = addr & 0xFF;
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W25Q32_CS_LOW();
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w25q32_spi_transmit(cmd, 4);
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w25q32_spi_receive(data, len);
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W25Q32_CS_HIGH();
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}
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/* 进入掉电模式 */
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static void w25q32_power_down(void) {
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uint8_t cmd = W25Q32_POWER_DOWN;
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W25Q32_CS_LOW();
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w25q32_spi_transmit(&cmd, 1);
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W25Q32_CS_HIGH();
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}
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/* 唤醒芯片 */
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static void w25q32_wake_up(void) {
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uint8_t cmd = W25Q32_RELEASE_POWER_DOWN;
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W25Q32_CS_LOW();
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w25q32_spi_transmit(&cmd, 1);
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W25Q32_CS_HIGH();
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HAL_Delay(5); /* 等待芯片唤醒 */
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}
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