Texas Instruments MSP430

320
return j;
}
void SW_I2C_write(unsigned char value)
{
unsigned char i = 8;
SDA_DIR_OUT();
SCL_LOW();
while(i > 0)
{
if(((value & 0x80) >> 7) != 0x00)
{
SDA_HIGH();
}
else
{
SDA_LOW();
}
value <<= 1;
delay_us(2);
SCL_HIGH();
delay_us(2);
SCL_LOW();
delay_us(2);
i--;
};
}
void SW_I2C_ACK_NACK(unsigned char mode)
{
SCL_LOW();
SDA_DIR_OUT();
switch(mode)
{
case I2C_ACK:
{
SDA_LOW();
break;
}
default:
{
SDA_HIGH();
break;
}
}
delay_us(2);
SCL_HIGH();
delay_us(2);
SCL_LOW();
}