IAP_CONTR = 0x80; //Enable IAP
IAP_TPS = 12; //Set the erasing wait parameter of 12MHz
IAP_CMD = 3; //Set IAP erasing command
IAP_ADDRL = addr; //Set IAP low address
IAP_ADDRH = addr >> 8; //Set IAP high address
IAP_TRIG = 0x5a; //Write trigger command (0x5a)
IAP_TRIG = 0xa5; //Write trigger command (0xa5)
_nop_(); //
IapIdle(); //Disable IAP function
}
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
UartInit();
IapErase(0x0400);
UartSEND(IapRead(0x0400));
IapProgram(0x0400, 0x12);
UartSEND(IapRead(0x0400));
while (1);
}
Assembly code
;Operating frequency for test is 11.0592MHz
AUXR DATA 8EH
T2H DATA 0D6H
T2L DATA 0D7H
IAP_DATA DATA 0C2H
IAP_ADDRH DATA 0C3H
IAP_ADDRL DATA 0C4H
IAP_CMD DATA 0C5H
IAP_TRIG DATA 0C6H
IAP_CONTR DATA 0C7H
IAP_TPS DATA 0F5H
P0M1 DATA 093H
P0M0 DATA 094H
P1M1 DATA 091H
P1M0 DATA 092H
P2M1 DATA 095H
P2M0 DATA 096H
P3M1 DATA 0B1H
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