MSP430G2232的实际寄存器和《MSP430x2xx Family User's Guide》（ slau144j.pdf）这个系列用户手册中的描述完全不一样无法参考，导致在使用I2C通讯的时候不知道如何配置相关寄存器。
请问是否有MSP430G2232 硬件IIC的配置说明？
下面是我按照例官网程写的通过IIC向slave地址为0xAE的设备的Register写入值的函数，请帮忙确认一下下面配置是否有问题。
void I2C_WRITE(int add,int data)
{
P1OUT |=BIT6+BIT7;
P1REN |= BIT6+BIT7;
P1DIR |=BIT6+BIT7;
//SDA和SCL有电阻上拉到VCC，是否还需要上面的设置？
//following is setting for I2C
USICTL0 |= USISWRST;//RESET
USICTL0 |= USIPE6+USIPE7+USIMST ;//P1.6&P1.7 For IIC+MASTER MODE
USICTL1 |= USII2C;//I2C MODE
USICKCTL =USIDIV_3+USISSEL_2+USICKPL;
USICTL0 &= ~USISWRST;//CLEAR RESET BIT
//START
USISRL =0x00;
USICTL0 |= USIGE+USIOE;
USICTL0 &=~USIGE;
//following is for slave address and write/read select
USISRL =0xAE;//slave Address 0XAE,write bit 0
USICNT =0x08;//8bit
while(USICTL1&USIIFG==0);//waiting for all 8 bits shift out
ACK_CHECK();
USISRL = add;//register Address
USICNT =0x08;//8bit
while(USICTL1&USIIFG==0);
ACK_CHECK();
USISRL = data;//data
USICNT =0x08;//8bit
ACK_CHECK();
//STOP
USICTL0|=USIOE;//SDA=OUTPUT
USISRL = 0X00;//MSB=0;
USICNT |=0x01;//USICNT =1 BIT
while (USICTL1&USIIFG==0);//WAITING FOR TRANS COMPLETE
USISRL &= 0xff;//USISRL =1 to drive SDA high
USICTL0 |=USIGE;//TRANSPARENT LATCH EN
USICTL0 &=~(USIGE+USIOE);//LATCH/SDA output disable
}
void ACK_CHECK(void)
{
// following is for ACK check
USICTL0 &= ~USIOE;//INPUT
USICNT =0X01;//1bit ack
while(USICTL1&USIIFG==0);//waiting for ACK
if(USISRL&0X01==1)// if NACK stop
{
I2C_ERROR =1;
}
else
{
I2C_ERROR =0;
}
USICTL0 |= USIOE; //enable output
}
