? 由于項目中需要使用iic的當前位置讀數據模式，但廠家sdk中并沒有實現。那就只能自己動手了：

I2C_STATUS_ENUM DRV_I2C_SetupForRead(I2C_BUS_CTRL_T * pI2cCtrl, void(*end_cb)(I2C_STATUS_ENUM))
{
while(DRV_I2C_IsBusy());
DRV_I2C_Disable();
DRV_I2C_ResetStatus();


//gDrvI2Cctrl.MB.settings = (uint8_t)( I2C_SETTING_STANDARD | I2C_SETTING_READ | I2C_SETTING_RANDOM_READ | I2C_SETTING_SCL_SYNC);
gDrvI2Cctrl.MB.settings = (uint8_t)( I2C_SETTING_STANDARD | I2C_SETTING_READ | I2C_SETTING_SEQ_CUR_READ | I2C_SETTING_SCL_SYNC);








gDrvI2Cctrl.MB.length_byteh = (uint8_t)((pI2cCtrl->NumOfReg)>>8);
gDrvI2Cctrl.MB.length_bytel = (uint8_t) (pI2cCtrl->NumOfReg);
gDrvI2Cctrl.MB.contrl_byte1 = (uint8_t)((pI2cCtrl->DeviceAddr<<1)|I2C_READ_CMD_BIT);
gDrvI2Cctrl.MB.address = (uint8_t) (pI2cCtrl->RegAddr);
gDrvI2Cctrl.MB.data_area.Ctrl2 = (uint8_t)((pI2cCtrl->DeviceAddr<<1)|I2C_READ_CMD_BIT);






DRV_I2C_SetClockFreq(pI2cCtrl->FreqSel);
DRV_I2C_SetRepeat(pI2cCtrl->repeat);
DRV_I2C_SetTxSetting(&gDrvI2Cctrl.MB.settings);
DRV_I2C_SetRxBufAddr(pI2cCtrl->ValueAddr.Dst);


? ? gDrvI2Cctrl.cb = end_cb; ? ?
? ? DRV_I2C_Enable();


? ? if(end_cb)
? ? ? ? return I2C_TRANSACTION_EXECUTING;


while(DRV_I2C_IsBusy());


return (DRV_I2C_GetStatus() & I2C_STATUS_MASK_ALLERROR)? \
I2C_TRANSACTION_FAILED: \
I2C_TRANSACTION_SUCCEEDED;


}

總結

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