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227 lines
8.2 KiB
227 lines
8.2 KiB
#include "zflash.h"
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#define ZFLASH_WRITE_DATA(start_address, data) \
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if (!flash_writ_32(start_address, config->ip)) { \
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FLASH->ACR |= 1 << 10; \
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HAL_FLASH_Lock();
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#define END() }
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static bool stmflash_address_legal(uint32_t start_addr, uint32_t end_addr) {
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if (start_addr < STM32_FLASH_BASE || start_addr % 4 || start_addr > (STM32_FLASH_BASE + STM32_FLASH_SIZE)) {
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return false;
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}
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if (end_addr < STM32_FLASH_BASE || end_addr % 4 || end_addr > (STM32_FLASH_BASE + STM32_FLASH_SIZE)) {
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return false;
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}
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return true;
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}
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static bool flash_writ_32(uint32_t *start_address, uint32_t data) {
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, *start_address, data) != HAL_OK) /* 写入数据 */
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{
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return false;
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}
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*start_address += 4;
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return true;
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}
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/**
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* @brief 从指定地址读取一个字 (32位数据)
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* @param faddr : 读取地址 (此地址必须为4倍数!!)
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* @retval 读取到的数据 (32位)
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*/
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uint32_t stmflash_read_word(uint32_t faddr) { return *(volatile uint32_t *)faddr; }
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/**
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* @brief 获取某个地址所在的flash扇区
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* @param addr : lash地址
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* @retval 0~11,即addr所在的扇区
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*/
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uint8_t stmflash_get_flash_sector(uint32_t addr) {
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if (addr < ADDR_FLASH_SECTOR_1)
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return FLASH_SECTOR_0;
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else if (addr < ADDR_FLASH_SECTOR_2)
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return FLASH_SECTOR_1;
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else if (addr < ADDR_FLASH_SECTOR_3)
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return FLASH_SECTOR_2;
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else if (addr < ADDR_FLASH_SECTOR_4)
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return FLASH_SECTOR_3;
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else if (addr < ADDR_FLASH_SECTOR_5)
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return FLASH_SECTOR_4;
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else if (addr < ADDR_FLASH_SECTOR_6)
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return FLASH_SECTOR_5;
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else if (addr < ADDR_FLASH_SECTOR_7)
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return FLASH_SECTOR_6;
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else if (addr < ADDR_FLASH_SECTOR_8)
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return FLASH_SECTOR_7;
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else if (addr < ADDR_FLASH_SECTOR_9)
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return FLASH_SECTOR_8;
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else if (addr < ADDR_FLASH_SECTOR_10)
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return FLASH_SECTOR_9;
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else if (addr < ADDR_FLASH_SECTOR_11)
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return FLASH_SECTOR_10;
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return FLASH_SECTOR_11;
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}
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/**
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* @brief 在FLASH 指定位置, 写入指定长度的数据(自动擦除)
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* @note 因为STM32F4的扇区实在太大,没办法本地保存扇区数据,所以本函数写地址如果非0XFF
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* ,那么会先擦除整个扇区且不保存扇区数据.所以写非0XFF的地址,将导致整个扇区数据丢失.
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* 建议写之前确保扇区里没有重要数据,最好是整个扇区先擦除了,然后慢慢往后写.
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* 该函数对OTP区域也有效!可以用来写OTP区!
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* OTP区域地址范围:0X1FFF7800~0X1FFF7A0F(注意：最后16字节，用于OTP数据块锁定，别乱写！！)
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* @param start_address : 起始地址 (此地址必须为4的倍数!!,否则写入出错!)
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* @param pbuf : 数据指针
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* @param length : 要写入的 字(32位)数(就是要写入的32位数据的个数)
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* @retval 无
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*/
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void stmflash_write(uint32_t waddr, uint32_t *pbuf, uint32_t length) {
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FLASH_EraseInitTypeDef flasheraseinit;
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HAL_StatusTypeDef FlashStatus = HAL_OK;
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uint32_t addrx = 0;
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uint32_t endaddr = 0;
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uint32_t sectorerror = 0;
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addrx = waddr; /* 写入的起始地址 */
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endaddr = waddr + length * 4; /* 写入的结束地址 */
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stmflash_address_legal(addrx, endaddr);
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HAL_FLASH_Unlock(); /* 解锁 */
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FLASH->ACR &= ~(1 << 10); /* FLASH擦除期间,必须禁止数据缓存!!! */
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if (addrx < 0X1FFF0000) /* 只有主存储区,才需要执行擦除操作!! */
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{
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while (addrx < endaddr) /* 扫清一切障碍.(对非FFFFFFFF的地方,先擦除) */
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{
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if (stmflash_read_word(addrx) != 0XFFFFFFFF) /* 有非0XFFFFFFFF的地方,要擦除这个扇区 */
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{
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flasheraseinit.TypeErase = FLASH_TYPEERASE_SECTORS; /* 擦除类型，扇区擦除 */
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flasheraseinit.Sector = stmflash_get_flash_sector(addrx); /* 要擦除的扇区 */
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flasheraseinit.NbSectors = 1; /* 一次只擦除一个扇区 */
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flasheraseinit.VoltageRange = FLASH_VOLTAGE_RANGE_3; /* 电压范围，VCC=2.7~3.6V之间!! */
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if (HAL_FLASHEx_Erase(&flasheraseinit, §orerror) != HAL_OK) {
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break; /* 发生错误了 */
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}
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} else {
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addrx += 4;
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}
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FLASH_WaitForLastOperation(FLASH_WAITETIME); /* 等待上次操作完成 */
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}
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}
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FlashStatus = FLASH_WaitForLastOperation(FLASH_WAITETIME); /* 等待上次操作完成 */
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if (FlashStatus == HAL_OK) {
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while (waddr < endaddr) /* 写数据 */
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{
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, waddr, *pbuf) != HAL_OK) /* 写入数据 */
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{
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break; /* 写入异常 */
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}
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waddr += 4;
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pbuf++;
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}
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}
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FLASH->ACR |= 1 << 10; /* FLASH擦除结束,开启数据fetch */
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HAL_FLASH_Lock(); /* 上锁 */
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}
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/**
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* @brief 从指定地址开始读出指定长度的数据
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* @param raddr : 起始地址
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* @param pbuf : 数据指针
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* @param length: 要读取的字(32)数,即4个字节的整数倍
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* @retval 无
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*/
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void stmflash_read(uint32_t raddr, uint32_t *pbuf, uint32_t length) {
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uint32_t i;
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for (i = 0; i < length; i++) {
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pbuf[i] = stmflash_read_word(raddr); /* 读取4个字节. */
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raddr += 4; /* 偏移4个字节. */
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}
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}
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/******************************************************************************************/
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/* 测试用代码 */
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/**
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* @brief 测试写数据(写1个字)
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* @param waddr : 起始地址
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* @param wdata : 要写入的数据
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* @retval 读取到的数据
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*/
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void test_write(uint32_t waddr, uint32_t wdata) { stmflash_write(waddr, &wdata, 1); /* 写入一个字 */ }
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int8_t stmflash_write_config(uint32_t start_address, config_t *config, uint32_t length) {
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FLASH_EraseInitTypeDef flasheraseinit;
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HAL_StatusTypeDef FlashStatus = HAL_OK;
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uint32_t flash_write_start_address = 0;
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uint32_t flash_write_end_address = 0;
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uint32_t sectorerror = 0;
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if (start_address < STM32_FLASH_BASE ||
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start_address % 4 || /* 写入地址小于 STM32_FLASH_BASE, 或不是4的整数倍, 非法. */
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start_address >
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(STM32_FLASH_BASE + STM32_FLASH_SIZE)) /* 写入地址大于 STM32_FLASH_BASE + STM32_FLASH_SIZE, 非法. */
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{
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return -1;
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}
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HAL_FLASH_Unlock(); /* 解锁 */
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FLASH->ACR &= ~(1 << 10); /* FLASH擦除期间,必须禁止数据缓存!!! */
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flash_write_start_address = start_address; /* 写入的起始地址 */
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flash_write_end_address = start_address + length * 4; /* 写入的结束地址 */
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if (flash_write_start_address < 0X1FFF0000) /* 只有主存储区,才需要执行擦除操作!! */
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{
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while (flash_write_start_address < flash_write_end_address) /* 扫清一切障碍.(对非FFFFFFFF的地方,先擦除) */
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{
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if (stmflash_read_word(flash_write_start_address) != 0XFFFFFFFF) /* 有非0XFFFFFFFF的地方,要擦除这个扇区 */
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{
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flasheraseinit.TypeErase = FLASH_TYPEERASE_SECTORS; /* 擦除类型，扇区擦除 */
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flasheraseinit.Sector = stmflash_get_flash_sector(flash_write_start_address); /* 要擦除的扇区 */
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flasheraseinit.NbSectors = 1; /* 一次只擦除一个扇区 */
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flasheraseinit.VoltageRange = FLASH_VOLTAGE_RANGE_3; /* 电压范围，VCC=2.7~3.6V之间!! */
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if (HAL_FLASHEx_Erase(&flasheraseinit, §orerror) != HAL_OK) {
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break; /* 发生错误了 */
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}
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} else {
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flash_write_start_address += 4;
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}
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FLASH_WaitForLastOperation(FLASH_WAITETIME); /* 等待上次操作完成 */
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}
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}
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FlashStatus = FLASH_WaitForLastOperation(FLASH_WAITETIME); /* 等待上次操作完成 */
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if (FlashStatus == HAL_OK) {
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// ZFLASH_WRITE_DATA(&start_address, config->ip) { return -1; }
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// END();
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// ZFLASH_WRITE_DATA(&start_address, config->gw) { return -2; }
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// END();
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// ZFLASH_WRITE_DATA(&start_address, config->netmask) { return -3; }
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// END();
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// ZFLASH_WRITE_DATA(&start_address, config->localport) { return -4; }
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// END();
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// ZFLASH_WRITE_DATA(&start_address, config->obtaining_ip_mode) { return -5; }
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// END();
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}
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FLASH->ACR |= 1 << 10; /* FLASH擦除结束,开启数据fetch */
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HAL_FLASH_Lock(); /* 上锁 */
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return 0;
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}
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