STC micro STC8A8K64D4 Series - Page 618

STC8A8K64D4 Series Manual
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sfr P5M1 = 0xc9;
sfr P5M0 = 0xca;
sbit SDA = P1^4;
sbit SCL = P1^5;
void Wait()
{
while (!(I2CMSST & 0x40));
I2CMSST &= ~0x40;
}
void Start()
{
I2CMSCR = 0x01; //Send START command
Wait();
}
void SendData(char dat)
{
I2CTXD = dat; //Write data to the data buffer
I2CMSCR = 0x02; //Send a SEND command
Wait();
}
void RecvACK()
{
I2CMSCR = 0x03; //Send read ACK command
Wait();
}
char RecvData()
{
I2CMSCR = 0x04; //Send RECV command
Wait();
return I2CRXD;
}
void SendACK()
{
I2CMSST = 0x00; //Setup the ACK signal
I2CMSCR = 0x05; //Send ACK command
Wait();
}
void SendNAK()
{
I2CMSST = 0x01; //Setup the NAK signal
I2CMSCR = 0x05; //Send ACK command
Wait();
}
void Stop()
{
I2CMSCR = 0x06; //Send STOP command
Wait();
}