BQ27421-G1: I2C无响应问题

电量计调试，I2C接口，host发送数据给电量计，电量计无应答，麻烦帮忙看一下发送的指令是否正确，可能会是什么原因，谢谢。

void FuelGauge_GpioInig(void)

{

s_IoMuxSetMode(FG_SCL_GPIO, i2c1_SCL_OUT, SIG_OUTPUT, IO_NOPULL);

s_IoMuxSetMode(FG_SDA_GPIO, I2C1_SDA_IN,  SIG_INPUT,  IO_NOPULL);

s_IoMuxSetMode(FG_SDA_GPIO, i2c1_SDA_OUT, SIG_OUTPUT, IO_NOPULL);

//100kHz

s_I2CConfig(I2C1, 100000);

}

void FuelGauge_Test(void)

{

u8 data[3];

u8 dataBuf[2]={0};

u32 addr = 0x55;

data[0] = 0x00;

data[1] = 0x01;

s_I2CSend(I2C1, addr, data, 2);

s_I2CRecv(I2C1, addr, dataBuf, 2);

DBG_HEX("FW_VER:", dataBuf, 2);

data[0] = 0x04;//reg

data[1] = 0x05;

s_I2CSend(I2C1, addr, data, 2);

s_I2CRecv(I2C1, addr, dataBuf, 2);

DBG_HEX("Voltage:", dataBuf, 2);

}