msp430F5229 iic 读取从设备数据，在切换到接受的时候，是如何实现，不知道有没有什么可以参考的，

#include "driverlib.h"

#define SLAVE_ADDRESS 0x80

uint8_t transmitData0;
uint8_t transmitData1;
uint8_t receivedData;

void main(void)
{
    //Stop WDT
    WDT_A_hold(WDT_A_BASE);

    //Assign I2C pins to USCI_B0
    GPIO_setAsPeripheralModuleFunctionInputPin(
        GPIO_PORT_P3,
        GPIO_PIN0 + GPIO_PIN1
        );

    //Initialize transmit data packet
    transmitData0 = 0x81;
    transmitData0 = 0xE0;

    //Initialize Master
    USCI_B_I2C_initMasterParam param = {0};
    param.selectClockSource = USCI_B_I2C_CLOCKSOURCE_SMCLK;
    param.i2cClk = UCS_getSMCLK();
    param.dataRate = USCI_B_I2C_SET_DATA_RATE_100KBPS;
    USCI_B_I2C_initMaster(USCI_B0_BASE, &param);

    //Specify slave address
    USCI_B_I2C_setSlaveAddress(USCI_B0_BASE,
                               SLAVE_ADDRESS
                               );

    //Set in transmit mode
    USCI_B_I2C_setMode(USCI_B0_BASE,
                       USCI_B_I2C_TRANSMIT_MODE
                       );

    //Enable I2C Module to start operations
    USCI_B_I2C_enable(USCI_B0_BASE);

    USCI_B_I2C_clearInterrupt(USCI_B0_BASE,
                                 USCI_B_I2C_RECEIVE_INTERRUPT
                                 );
       USCI_B_I2C_enableInterrupt(USCI_B0_BASE,
                                  USCI_B_I2C_RECEIVE_INTERRUPT
                                  );

        //Send single byte data.
        USCI_B_I2C_masterSendSingleByte(USCI_B0_BASE,
                                        transmitData0
                                        );

        //Delay until transmission completes
        while(USCI_B_I2C_isBusBusy(USCI_B0_BASE))
        {
            ;
        }
        USCI_B_I2C_masterSendSingleByte(USCI_B0_BASE,
                                        transmitData1
                                        );

        //Delay until transmission completes
        while(USCI_B_I2C_isBusBusy(USCI_B0_BASE))
        {
            ;
        }

           while(1)
           {
               //Initiate command to receive a single character from Slave
               USCI_B_I2C_masterReceiveSingleStart(USCI_B0_BASE);

               //Enter low power mode 0 with interrupts enabled.
               //Wait until character is received.
               __bis_SR_register(LPM0_bits + GIE);
               __no_operation();
           }
}

#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=USCI_B0_VECTOR
__interrupt
#elif defined(__GNUC__)
__attribute__((interrupt(USCI_B0_VECTOR)))
#endif
void USCI_B0_ISR(void)
{
    switch(__even_in_range(UCB0IV,12))
    {
    //Vector 10: Data received – RXIFG
    case USCI_I2C_UCRXIFG:
    {
        //Grab data from data register
        receivedData = USCI_B_I2C_masterReceiveSingle(
            USCI_B0_BASE);

        //Exit low power mode 0 and disable GIE on interrupt exit
        __bic_SR_register_on_exit(LPM0_bits + GIE);

        break;
    }

    default:    break;
    }
}

这是我写完读取命令后，接收iic的程序的代码，目前无法去数据，不知道哪里出现问题了，希望能帮忙解答一下，thanks！

灰小子：

已在另一个帖子回复http://www.deyisupport.com/question_answer/microcontrollers/msp430/f/55/p/84914/215097.aspx#215097