100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
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#include "stm32_flash.h"
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//<2F><>ȡָ<C8A1><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD>İ<EFBFBD><C4B0><EFBFBD>(16λ<36><CEBB><EFBFBD><EFBFBD>)
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//faddr:<3A><><EFBFBD><EFBFBD>ַ(<28>˵<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>Ϊ2<CEAA>ı<EFBFBD><C4B1><EFBFBD>!!)
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//<2F><><EFBFBD><EFBFBD>ֵ:<3A><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD>.
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vu16 STM32_FLASH_ReadHalfWord(u32 faddr)
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{
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return *(vu16*)faddr;
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}
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4>
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//WriteAddr:<3A><>ʼ<EFBFBD><CABC>ַ
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//pBuffer:<3A><><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
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//NumToWrite:<3A><><EFBFBD><EFBFBD>(16λ)<29><>
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void STM32_FLASH_Write_NoCheck(u32 WriteAddr,u16 *pBuffer,u16 NumToWrite)
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{
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u16 i;
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for(i=0;i<NumToWrite;i++)
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{
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FLASH_ProgramHalfWord(WriteAddr,pBuffer[i]);
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WriteAddr+=2;//<2F><>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>2.
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}
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}
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//<2F><>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ʼд<CABC><D0B4>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD>
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//WriteAddr:<3A><>ʼ<EFBFBD><CABC>ַ(<28>˵<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>Ϊ2<CEAA>ı<EFBFBD><C4B1><EFBFBD>)
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//pBuffer:<3A><><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
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//NumToWrite:<3A><><EFBFBD><EFBFBD>(16λ)<29><>(<28><><EFBFBD><EFBFBD>Ҫд<D2AA><D0B4><EFBFBD><EFBFBD>16λ<36><CEBB><EFBFBD>ݵĸ<DDB5><C4B8><EFBFBD>.)
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#if STM32_FLASH_SIZE<256
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#define STM32_SECTOR_SIZE 1024 //<2F>ֽ<EFBFBD>
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#else
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#define STM32_SECTOR_SIZE 2048
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#endif
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u16 STM32_FLASH_BUF[STM32_SECTOR_SIZE/2];//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2K<32>ֽ<EFBFBD>
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void STM32_FLASH_Write(u32 WriteAddr,u16 *pBuffer,u16 NumToWrite)
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{
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u32 secpos; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
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u16 secoff; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƫ<EFBFBD>Ƶ<EFBFBD>ַ(16λ<36>ּ<EFBFBD><D6BC><EFBFBD>)
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u16 secremain; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʣ<EFBFBD><CAA3><EFBFBD><EFBFBD>ַ(16λ<36>ּ<EFBFBD><D6BC><EFBFBD>)
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u16 i;
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u32 offaddr; //ȥ<><C8A5>0X08000000<30><30><EFBFBD>ĵ<EFBFBD>ַ
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if(WriteAddr<STM32_FLASH_BASE||(WriteAddr>=(STM32_FLASH_BASE+1024*STM32_FLASH_SIZE)))return;//<2F>Ƿ<EFBFBD><C7B7><EFBFBD>ַ
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FLASH_Unlock(); //<2F><><EFBFBD><EFBFBD>
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offaddr=WriteAddr-STM32_FLASH_BASE; //ʵ<><CAB5>ƫ<EFBFBD>Ƶ<EFBFBD>ַ.
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secpos=offaddr/STM32_SECTOR_SIZE; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
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secoff=(offaddr%STM32_SECTOR_SIZE)/2; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>ƫ<EFBFBD><C6AB>(2<><32><EFBFBD>ֽ<EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ.)
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secremain=STM32_SECTOR_SIZE/2-secoff; //<2F><><EFBFBD><EFBFBD>ʣ<EFBFBD><CAA3><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD>С
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if(NumToWrite<=secremain)secremain=NumToWrite;//<2F><><EFBFBD><EFBFBD><EFBFBD>ڸ<EFBFBD><DAB8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ
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while(1)
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{
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STM32_FLASH_Read(secpos*STM32_SECTOR_SIZE+STM32_FLASH_BASE,STM32_FLASH_BUF,STM32_SECTOR_SIZE/2);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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for(i=0;i<secremain;i++)//У<><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{
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if(STM32_FLASH_BUF[secoff+i]!=0XFFFF)
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break;//<2F><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>
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}
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if(i<secremain)//<2F><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>
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{
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FLASH_ErasePage(secpos*STM32_SECTOR_SIZE+STM32_FLASH_BASE);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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for(i=0;i<secremain;i++)//<2F><><EFBFBD><EFBFBD>
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{
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STM32_FLASH_BUF[i+secoff]=pBuffer[i];
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}
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STM32_FLASH_Write_NoCheck(secpos*STM32_SECTOR_SIZE+STM32_FLASH_BASE,STM32_FLASH_BUF,STM32_SECTOR_SIZE/2);//д<><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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}
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else
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STM32_FLASH_Write_NoCheck(WriteAddr,pBuffer,secremain);//д<>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD>,ֱ<><D6B1>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʣ<EFBFBD><CAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
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if(NumToWrite==secremain)
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break;//д<><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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else//д<><D0B4>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>
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{
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secpos++; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>1
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secoff=0; //ƫ<><C6AB>λ<EFBFBD><CEBB>Ϊ0
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pBuffer+=secremain; //ָ<><D6B8>ƫ<EFBFBD><C6AB>
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WriteAddr+=secremain; //д<><D0B4>ַƫ<D6B7><C6AB>
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NumToWrite-=secremain; //<2F>ֽ<EFBFBD>(16λ)<29><><EFBFBD>ݼ<EFBFBD>
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if(NumToWrite>(STM32_SECTOR_SIZE/2))
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secremain=STM32_SECTOR_SIZE/2;//<2F><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
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else
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secremain=NumToWrite;//<2F><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
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}
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}
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FLASH_Lock();//<2F><><EFBFBD><EFBFBD>
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}
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//<2F><>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD>
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//ReadAddr:<3A><>ʼ<EFBFBD><CABC>ַ
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//pBuffer:<3A><><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
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//NumToWrite:<3A><><EFBFBD><EFBFBD>(16λ)<29><>
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void STM32_FLASH_Read(u32 ReadAddr,u16 *pBuffer,u16 NumToRead)
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{
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u16 i;
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for(i=0;i<NumToRead;i++)
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{
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pBuffer[i]=STM32_FLASH_ReadHalfWord(ReadAddr);//<2F><>ȡ2<C8A1><32><EFBFBD>ֽ<EFBFBD>.
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ReadAddr+=2;//ƫ<><C6AB>2<EFBFBD><32><EFBFBD>ֽ<EFBFBD>.
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}
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}
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