#include "flash.h"
/*
* 一页Size是0x400
* 以STM32F103C8T6为例 内存范围是0x8000 0000 —— 0x8000 FFFF
* 因此最后一页地址是0x0800 FBFF
*/
void Earse_Page(uint32_t address,uint32_t pages_number)//页数一般是1页
{
__disable_irq();//关闭所有中断
//解锁FLASH
HAL_FLASH_Unlock();
//声明结构体
FLASH_EraseInitTypeDef my_flash;
my_flash.NbPages=pages_number;//设置擦除的页数
my_flash.TypeErase=FLASH_TYPEERASE_PAGES;//只做页面擦除操作
uint32_t error=0;//如果出现错误、变量会被设置为出错的Flash地址
my_flash.PageAddress=address;//设置要擦除的地址
HAL_FLASHEx_Erase(&my_flash,&error);//擦除
HAL_FLASH_Lock();//锁住FLASH
__enable_irq(); //开启所有中断
}
void Write_uint8(uint32_t address,uint8_t data)
{
__disable_irq();//关闭所有中断
//解锁FLASH
HAL_FLASH_Unlock();
HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD,address,data);
HAL_FLASH_Lock();//锁住FLASH
__enable_irq(); //开启所有中断
}
void Write_uint16(uint32_t address,uint16_t data)
{
__disable_irq();//关闭所有中断
//解锁FLASH
HAL_FLASH_Unlock();
HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD,address,data);
HAL_FLASH_Lock();//锁住FLASH
__enable_irq(); //开启所有中断
}
void Write_uint32(uint32_t address,uint32_t data)
{
__disable_irq();//关闭所有中断
//解锁FLASH
HAL_FLASH_Unlock();
HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD,address,data);
HAL_FLASH_Lock();//锁住FLASH
__enable_irq(); //开启所有中断
}
void Write_uint64(uint32_t address,uint64_t data)
{
__disable_irq();//关闭所有中断
//解锁FLASH
HAL_FLASH_Unlock();
HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD,address,data);
HAL_FLASH_Lock();//锁住FLASH
__enable_irq(); //开启所有中断
}
uint8_t Read_uint8(uint32_t address)
{
return *(__IO uint8_t *)address;
}
uint16_t Read_uint16(uint32_t address)
{
return *(__IO uint16_t *)address;
}
uint32_t Read_uint32(uint32_t address)
{
return *(__IO uint32_t *)address;
}
uint64_t Read_uint64(uint32_t address)
{
return *(__IO uint64_t *)address;
}
/**********************************************************************************************
*函数：void STMFLASH_Write(uint32_t WriteAddr,uint8_t *pBuffer,uint32_t NumToWrite)
*功能：读取EEPROM数组写入操作
*输入：WriteAddr:起始地址
pBuffer:数据指针
NumToWrite:字(32位)数
*输出：无
*特殊说明：无
**********************************************************************************************/
void STMFLASH_Write(uint32_t WriteAddr,uint8_t *pBuffer,uint32_t NumToWrite)
{
//擦除FLASH
Earse_Page(WriteAddr,1);
uint32_t i;
for(i=0;i<NumToWrite;i+=2)
{
if(NumToWrite>i+1)
{
uint16_t temp=((pBuffer[i]<<8)+pBuffer[i+1]);
Write_uint16(WriteAddr, temp);
WriteAddr+=2;//地址增加2
}
}
}
//从指定地址开始读出指定长度的数据
//ReadAddr:起始地址
//pBuffer:数据指针
//NumToWrite:字(32位)数
void STMFLASH_Read(uint32_t ReadAddr,uint8_t *PBuffer,uint32_t NumToRead)
{
uint32_t i;
for(i=0; i<NumToRead; i+=2)
{
if(NumToRead>i+1)
{
uint16_t temp=Read_uint16(ReadAddr);//读取2个字节.
PBuffer[i]=((temp&0xff00)>>8);
PBuffer[i+1]=(temp&0x00ff);
ReadAddr+=2;//偏移4个字节.
}
}
}
