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帮忙看看片内flash的写问题，檫除没有问题，就是不能写入数据。
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新會員
 
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帮忙看看片内flash的写问题，檫除没有问题，就是不能写入数据。帮忙看看片内flash的写问题，檫除没有问题，就是不能写入数据。
谢谢了！ 用的是pic18f97j60 , #define FLASH_ERASE_SIZE 1024ul #define FLASH_WRITE_SIZE 64ul #pragma romdata ROM_CONFIG_SECT=0xb400 static ROM BYTE vConfigData[FLASH_ERASE_SIZE]; #pragma romdata void flashwrite(unsigned char * source_addr,unsigned char length, unsigned long addr) { TBLPTR = (DWORD)vConfigData; EECON1bits.FREE = 1; EECON1bits.WREN = 1; _asm movlw 0x55 movwf EECON2, ACCESS movlw 0xAA movwf EECON2, ACCESS bsf EECON1, 1, ACCESS //WR _endasm EECON1bits.WREN = 0; TBLPTRL=((addr)&0xFF); TBLPTRH=(((addr)>>8)&0xFF); TBLPTRU=(((addr)>>8)>>8); EECON1=0; while(length--) { TABLAT=*source_addr++; _asm TBLWTPOSTINC _endasm } TBLPTRL=((addr)&0xFF); TBLPTRH=(((addr)>>8)&0xFF); TBLPTRU=(((addr)>>8)>>8); EECON1bits.WREN=1; // this is the required sequence INTCONbits.GIE=0; EECON2=0x55; EECON2=0xAA; EECON1bits.WR=1; while(EECON1bits.WR); EECON1bits.WREN=0; }
發表於: 2009/8/4 10:44
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