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#include "zflash.h"
#define ZFLASH_WRITE_DATA(start_address, data) \
if (!flash_writ_32(start_address, config->ip)) { \ FLASH->ACR |= 1 << 10; \ HAL_FLASH_Lock();
#define END() }
static bool stmflash_address_legal(uint32_t start_addr, uint32_t end_addr) { if (start_addr < STM32_FLASH_BASE || start_addr % 4 || start_addr > (STM32_FLASH_BASE + STM32_FLASH_SIZE)) { return false; } if (end_addr < STM32_FLASH_BASE || end_addr % 4 || end_addr > (STM32_FLASH_BASE + STM32_FLASH_SIZE)) { return false; } return true;}
static bool flash_writ_32(uint32_t *start_address, uint32_t data) { if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, *start_address, data) != HAL_OK) /* 写入数据 */ { return false; } *start_address += 4; return true;}
/**
* @brief 从指定地址读取一个字 (32位数据) * @param faddr : 读取地址 (此地址必须为4倍数!!) * @retval 读取到的数据 (32位) */uint32_t stmflash_read_word(uint32_t faddr) { return *(volatile uint32_t *)faddr; }
/**
* @brief 获取某个地址所在的flash扇区 * @param addr : lash地址 * @retval 0~11,即addr所在的扇区 */uint8_t stmflash_get_flash_sector(uint32_t addr) { if (addr < ADDR_FLASH_SECTOR_1) return FLASH_SECTOR_0; else if (addr < ADDR_FLASH_SECTOR_2) return FLASH_SECTOR_1; else if (addr < ADDR_FLASH_SECTOR_3) return FLASH_SECTOR_2; else if (addr < ADDR_FLASH_SECTOR_4) return FLASH_SECTOR_3; else if (addr < ADDR_FLASH_SECTOR_5) return FLASH_SECTOR_4; else if (addr < ADDR_FLASH_SECTOR_6) return FLASH_SECTOR_5; else if (addr < ADDR_FLASH_SECTOR_7) return FLASH_SECTOR_6; else if (addr < ADDR_FLASH_SECTOR_8) return FLASH_SECTOR_7; else if (addr < ADDR_FLASH_SECTOR_9) return FLASH_SECTOR_8; else if (addr < ADDR_FLASH_SECTOR_10) return FLASH_SECTOR_9; else if (addr < ADDR_FLASH_SECTOR_11) return FLASH_SECTOR_10; return FLASH_SECTOR_11;}
/**
* @brief 在FLASH 指定位置, 写入指定长度的数据(自动擦除) * @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 * ,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. * 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. * 该函数对OTP区域也有效!可以用来写OTP区! * 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！！) * @param start_address : 起始地址 (此地址必须为4的倍数!!,否则写入出错!) * @param pbuf : 数据指针 * @param length : 要写入的 字(32位)数(就是要写入的32位数据的个数) * @retval 无 */void stmflash_write(uint32_t waddr, uint32_t *pbuf, uint32_t length) { FLASH_EraseInitTypeDef flasheraseinit; HAL_StatusTypeDef FlashStatus = HAL_OK;
uint32_t addrx = 0; uint32_t endaddr = 0; uint32_t sectorerror = 0;
addrx = waddr; /* 写入的起始地址 */ endaddr = waddr + length * 4; /* 写入的结束地址 */
stmflash_address_legal(addrx, endaddr);
HAL_FLASH_Unlock(); /* 解锁 */ FLASH->ACR &= ~(1 << 10); /* FLASH擦除期间,必须禁止数据缓存!!! */
if (addrx < 0X1FFF0000) /* 只有主存储区,才需要执行擦除操作!! */ { while (addrx < endaddr) /* 扫清一切障碍.(对非FFFFFFFF的地方,先擦除) */ { if (stmflash_read_word(addrx) != 0XFFFFFFFF) /* 有非0XFFFFFFFF的地方,要擦除这个扇区 */ { flasheraseinit.TypeErase = FLASH_TYPEERASE_SECTORS; /* 擦除类型，扇区擦除 */ flasheraseinit.Sector = stmflash_get_flash_sector(addrx); /* 要擦除的扇区 */ flasheraseinit.NbSectors = 1; /* 一次只擦除一个扇区 */ flasheraseinit.VoltageRange = FLASH_VOLTAGE_RANGE_3; /* 电压范围，VCC=2.7~3.6V之间!! */
if (HAL_FLASHEx_Erase(&flasheraseinit, §orerror) != HAL_OK) { break; /* 发生错误了 */ }
} else { addrx += 4; } FLASH_WaitForLastOperation(FLASH_WAITETIME); /* 等待上次操作完成 */ } }
FlashStatus = FLASH_WaitForLastOperation(FLASH_WAITETIME); /* 等待上次操作完成 */
if (FlashStatus == HAL_OK) { while (waddr < endaddr) /* 写数据 */ { if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, waddr, *pbuf) != HAL_OK) /* 写入数据 */ { break; /* 写入异常 */ }
waddr += 4; pbuf++; } }
FLASH->ACR |= 1 << 10; /* FLASH擦除结束,开启数据fetch */
HAL_FLASH_Lock(); /* 上锁 */}
/**
* @brief 从指定地址开始读出指定长度的数据 * @param raddr : 起始地址 * @param pbuf : 数据指针 * @param length: 要读取的字(32)数,即4个字节的整数倍 * @retval 无 */void stmflash_read(uint32_t raddr, uint32_t *pbuf, uint32_t length) { uint32_t i;
for (i = 0; i < length; i++) { pbuf[i] = stmflash_read_word(raddr); /* 读取4个字节. */ raddr += 4; /* 偏移4个字节. */ }}
/******************************************************************************************//* 测试用代码 */
/**
* @brief 测试写数据(写1个字) * @param waddr : 起始地址 * @param wdata : 要写入的数据 * @retval 读取到的数据 */void test_write(uint32_t waddr, uint32_t wdata) { stmflash_write(waddr, &wdata, 1); /* 写入一个字 */ }
int8_t stmflash_write_config(uint32_t start_address, config_t *config, uint32_t length) { FLASH_EraseInitTypeDef flasheraseinit; HAL_StatusTypeDef FlashStatus = HAL_OK;
uint32_t flash_write_start_address = 0; uint32_t flash_write_end_address = 0; uint32_t sectorerror = 0;
if (start_address < STM32_FLASH_BASE || start_address % 4 || /* 写入地址小于 STM32_FLASH_BASE, 或不是4的整数倍, 非法. */ start_address > (STM32_FLASH_BASE + STM32_FLASH_SIZE)) /* 写入地址大于 STM32_FLASH_BASE + STM32_FLASH_SIZE, 非法. */ { return -1; }
HAL_FLASH_Unlock(); /* 解锁 */ FLASH->ACR &= ~(1 << 10); /* FLASH擦除期间,必须禁止数据缓存!!! */
flash_write_start_address = start_address; /* 写入的起始地址 */ flash_write_end_address = start_address + length * 4; /* 写入的结束地址 */
if (flash_write_start_address < 0X1FFF0000) /* 只有主存储区,才需要执行擦除操作!! */ { while (flash_write_start_address < flash_write_end_address) /* 扫清一切障碍.(对非FFFFFFFF的地方,先擦除) */ { if (stmflash_read_word(flash_write_start_address) != 0XFFFFFFFF) /* 有非0XFFFFFFFF的地方,要擦除这个扇区 */ { flasheraseinit.TypeErase = FLASH_TYPEERASE_SECTORS; /* 擦除类型，扇区擦除 */ flasheraseinit.Sector = stmflash_get_flash_sector(flash_write_start_address); /* 要擦除的扇区 */ flasheraseinit.NbSectors = 1; /* 一次只擦除一个扇区 */ flasheraseinit.VoltageRange = FLASH_VOLTAGE_RANGE_3; /* 电压范围，VCC=2.7~3.6V之间!! */
if (HAL_FLASHEx_Erase(&flasheraseinit, §orerror) != HAL_OK) { break; /* 发生错误了 */ }
} else { flash_write_start_address += 4; } FLASH_WaitForLastOperation(FLASH_WAITETIME); /* 等待上次操作完成 */ } }
FlashStatus = FLASH_WaitForLastOperation(FLASH_WAITETIME); /* 等待上次操作完成 */
if (FlashStatus == HAL_OK) { // ZFLASH_WRITE_DATA(&start_address, config->ip) { return -1; }
// END();
// ZFLASH_WRITE_DATA(&start_address, config->gw) { return -2; }
// END();
// ZFLASH_WRITE_DATA(&start_address, config->netmask) { return -3; }
// END();
// ZFLASH_WRITE_DATA(&start_address, config->localport) { return -4; }
// END();
// ZFLASH_WRITE_DATA(&start_address, config->obtaining_ip_mode) { return -5; }
// END();
}
FLASH->ACR |= 1 << 10; /* FLASH擦除结束,开启数据fetch */
HAL_FLASH_Lock(); /* 上锁 */ return 0;}
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