STC micro STC8A8K64D4 Series - Page 630

STC8A8K64D4 Series Manual
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}
else if (I2CSLST & 0x10)
{
I2CSLST &= ~0x10; //Handle the SEND event
if (I2CSLST & 0x02)
{
I2CTXD = 0xff; //Stop receiving data when receiving NAK
}
else
{
I2CTXD = buffer[++addr]; //Continue reading data when receiving ACK
}
}
else if (I2CSLST & 0x08)
{
I2CSLST &= ~0x08; //Handle the STOP event
isda = 1;
isma = 1;
}
_pop_(P_SW2);
}
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;
P_SW2 = 0x80;
I2CCFG = 0x81; //Enable I2C slave mode
I2CSLADR = 0x5a; //Set the slave device address to 5A
//That is, I2CSLADR[7:1]=010_1101B, MA=0B.
//Since MA is 0, the device address sent by the host must be
// the same as I2CSLADR[7:1] to access this I2C slave device.
//If the host needs to write data, it will send 5AH(0101_1010B)
I2CSLST = 0x00;
I2CSLCR = 0x78; //Enable interrupt of slave mode
EA = 1;
isda = 1; //User variable initialization
isma = 1;
addr = 0;
I2CTXD = buffer[addr];
while (1);
}