STC micro STC8A8K64D4 Series - Page 473

STC8A8K64D4 Series Manual
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sfr P2M1 = 0x95;
sfr P2M0 = 0x96;
sfr P3M1 = 0xb1;
sfr P3M0 = 0xb2;
sfr P4M1 = 0xb3;
sfr P4M0 = 0xb4;
sfr P5M1 = 0xc9;
sfr P5M0 = 0xca;
sfr IAP_DATA = 0xC2;
sfr IAP_ADDRH = 0xC3;
sfr IAP_ADDRL = 0xC4;
sfr IAP_CMD = 0xC5;
sfr IAP_TRIG = 0xC6;
sfr IAP_CONTR = 0xC7;
sfr IAP_TPS = 0xF5;
#define IAP_OFFSET 0xF000H // STC8A8K60S4
void IapIdle()
{
IAP_CONTR = 0; //Disable IAP function
IAP_CMD = 0; //Clear command register
IAP_TRIG = 0; //Clear trigger register
IAP_ADDRH = 0x80; //Set the address to a non-IAP area
IAP_ADDRL = 0;
}
char IapRead(int addr)
{
addr += IAP_OFFSET; //Using MOVC to read the EEPROM needs to add the
corresponding offset
return *(char code *)(addr); //Read data using MOVC
}
void IapProgram(int addr, char dat)
{
IAP_CONTR = 0x80; //Enable IAP
IAP_TPS = 12; //Set the erasing wait parameter of 12MHz
IAP_CMD = 2; //Set IAP writing command
IAP_ADDRL = addr; //Set IAP low address
IAP_ADDRH = addr >> 8; //Set IAP high address
IAP_DATA = dat; //Write IAP data
IAP_TRIG = 0x5a; //Write trigger command (0x5a)
IAP_TRIG = 0xa5; //Write trigger command (0xa5)
_nop_();
IapIdle(); //Disable IAP function
}
void IapErase(int addr)
{
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)