在C51中调用的对STC的EEPROM操作的函数
/*$PAGE*/
/*
***************************************************************************************************************
*
* IspRead
* Name : IspRead
* Returns : none
* Description : Read a string from EEPROM and Write them to the NumArray.
***************************************************************************************************************
*/
void IspRead(void)
{
unsigned char c;
EA = 0;
DPH = 0x10;
DPL = 0x10;
ISP_CONTR = ENABLE_ISP; //允许ISP操作
ISP_CMD = ISP_BYTE_READ; //命令EEPROM读
for(RxCtr = 0;RxCtr<MAX_NUM ;RxCtr++){
ISP_ADDRH = DPH;
ISP_ADDRL = DPL;
_nop_();
ISP_TRIG = 0x46;
ISP_TRIG = 0xB9;
_nop_();
c = ISP_DATA ;
_nop_();
DacTal[RxCtr] = c;
DPL++;
}
ISP_CONTR = 0x00;
ISP_CMD = 0x00;
ISP_TRIG = 0x00;
ISP_ADDRH = 0x00;
ISP_ADDRL = 0x00;
RxCtr = 0;
EA = 1;
}
/*$PAGE*/
/*
***************************************************************************************************************
*
* IspWrite
* Name : IspWrite
* Returns : none
* Description : Write a serial number to the EEPROM,Do it only while in CommISR.
***************************************************************************************************************
*/
void IspWrite(void)
{
unsigned char c;
IspErase();
DPH = 0x10;
DPL = 0x10;
ISP_CONTR = ENABLE_ISP; //允许ISP操作
ISP_CMD = ISP_BYTE_WRITE; //命令EEPROM写
for(RxCtr = 0;RxCtr <MAX_NUM ;RxCtr++){
ISP_ADDRH = DPH;
ISP_ADDRL = DPL;
c = DacTal[RxCtr];
ISP_DATA = c;
_nop_();
ISP_TRIG = 0x46;
ISP_TRIG = 0xB9;
_nop_();
DPL++;
}
ISP_CONTR = 0x00;
ISP_CMD = 0x00;
ISP_TRIG = 0x00;
ISP_ADDRH = 0x00;
ISP_ADDRL = 0x00;
RxCtr = 0;
}
void IspErase(void)
{
ISP_ADDRH = 0x10;
ISP_ADDRL = 0x00;
_nop_();
ISP_CONTR = ENABLE_ISP; //允许ISP操作
ISP_CMD = ISP_SECTOR_ERASE; //命令EEPROM檫除
_nop_();
ISP_TRIG = 0x46;
ISP_TRIG = 0xB9;
_nop_();
ISP_CONTR = 0x00;
ISP_CMD = 0x00;
ISP_TRIG = 0x00;
ISP_ADDRH = 0x00;
ISP_ADDRL = 0x00;
}
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