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72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/****************************************Copyright (c)****************************************************
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**
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** File name: humi.c
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** Created by: Brown Lee
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** Created date: 2020-10-16
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** Version: v1.0
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** Descriptions: The original
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** Link address: https://blog.csdn.net/weixin_45006076
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**
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*********************************************************************************************************/
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#include "flash.h"
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//从指定地址开始读取多个数据
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void FLASH_ReadMoreData(uint32_t startAddress,uint16_t *readData,uint16_t countToRead)
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{
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uint16_t dataIndex;
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for(dataIndex=0;dataIndex<countToRead;dataIndex++)
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{
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readData[dataIndex]=FLASH_ReadHalfWord(startAddress+dataIndex*2);
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}
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}
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//读取指定地址的半字(16位数据)
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uint16_t FLASH_ReadHalfWord(uint32_t address)
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{
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return *(__IO uint16_t*)address;
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}
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//读取指定地址的全字(32位数据)
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uint32_t FLASH_ReadWord(uint32_t address)
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{
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uint32_t temp1,temp2;
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temp1=*(__IO uint16_t*)address;
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temp2=*(__IO uint16_t*)(address+2);
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return (temp2<<16)+temp1;
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}
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//从指定地址开始写入多个数据
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void FLASH_WriteMoreData(uint32_t startAddress, uint16_t *writeData, uint16_t countToWrite)
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{
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uint32_t dataIndex;
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FLASH_EraseInitTypeDef User_Flash; //声明 FLASH_EraseInitTypeDef 结构体为 User_Flash
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if(startAddress < FLASH_BASE || ((startAddress+countToWrite * 2) >= (FLASH_BASE + 1024 * FLASH_SIZE)))
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{
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return;//非法地址
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}
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HAL_FLASH_Unlock(); //解锁写保护
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// offsetAddress=startAddress-FLASH_BASE; //计算去掉0X08000000后的实际偏移地址
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// sectorPosition=offsetAddress/FLASH_SIZE; //计算扇区地址，对于STM32F103VET6为0~255
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//
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// sectorStartAddress=sectorPosition*SECTOR_SIZE+FLASH_BASE; //对应扇区的首地址
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HAL_FLASH_Unlock(); //解锁Flash
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User_Flash.TypeErase = FLASH_TYPEERASE_PAGES; //标明Flash执行页面只做擦除操作
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User_Flash.PageAddress = startAddress; //声明要擦除的地址
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User_Flash.NbPages = 1; //说明要擦除的页数，此参数必须是Min_Data = 1和Max_Data =(最大页数-初始页的值)之间的值
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uint32_t PageError = 0; //设置PageError,如果出现错误这个变量会被设置为出错的FLASH地址
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HAL_FLASHEx_Erase(&User_Flash, &PageError); //调用擦除函数擦除
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for(dataIndex=0;dataIndex<countToWrite;dataIndex++)
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{
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HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD,startAddress+dataIndex*2,writeData[dataIndex]);
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}
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HAL_FLASH_Lock();//上锁写保护
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}
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