bool isl29125_init(I2C_HandleTypeDef* hi2c_x)
{
    bool ret = true;

    if(HAL_I2C_IsDeviceReady(hi2c_x, ISL_I2C_ADDR<<1, 10, 1000) != HAL_OK) {
        ret &= false;
    }

    uint8_t receive_data[1];
    uint8_t send_data = DEVICE_ID;

    HAL_I2C_Master_Transmit(hi2c_x,ISL_I2C_ADDR<<1,&send_data,1,1000);
    HAL_Delay(15);

    HAL_I2C_Master_Receive(hi2c_x,ISL_I2C_ADDR<<1,receive_data,1,1000);


    if (receive_data[0] != 0x7D) {
        ret &= false;
    }

    return(ret);
}

static void MX_I2C1_Init(void)
{
  hi2c1.Instance = I2C1;
  hi2c1.Init.Timing = 0x2000090E;
  hi2c1.Init.OwnAddress1 = 0;
  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
  hi2c1.Init.OwnAddress2 = 0;
  hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
}