Texas Instruments MSP430

306
}
void I2C_USCI_set_address(unsigned char address)
{
UCB0CTL1 |= UCSWRST;
UCB0I2CSA = address;
UCB0CTL1 &= ~UCSWRST;
}
unsigned char I2C_USCI_read_byte(unsigned char address)
{
while(UCB0CTL1 & UCTXSTP);
UCB0CTL1 |= (UCTR | UCTXSTT);
while(!(IFG2 & UCB0TXIFG));
UCB0TXBUF = address;
while(!(IFG2 & UCB0TXIFG));
UCB0CTL1 &= ~UCTR;
UCB0CTL1 |= UCTXSTT;
IFG2 &= ~UCB0TXIFG;
while(UCB0CTL1 & UCTXSTT);
UCB0CTL1 |= UCTXSTP;
return UCB0RXBUF;
}
unsigned char I2C_USCI_read_word(unsigned char address,unsigned char *value,
unsigned char length)
{
unsigned char i = 0;
while (UCB0CTL1 & UCTXSTP);
UCB0CTL1 |= (UCTR | UCTXSTT);
while (!(IFG2 & UCB0TXIFG));
IFG2 &= ~UCB0TXIFG;
if(UCB0STAT & UCNACKIFG)
{
return UCB0STAT;
}
UCB0TXBUF = address;
while (!(IFG2 & UCB0TXIFG));
if(UCB0STAT & UCNACKIFG)
{
return UCB0STAT;
}
UCB0CTL1 &= ~UCTR;