sht31-driver.c

  int val = 0;
	int temp, humi;

	u8 bytes[6] = {0};
	const u8 cmd[6] = {0};
	u32 s;

	printk("[%s][%d]\n", __func__, __LINE__);
	s = i2c_smbus_write_i2c_block_data(i2c_client, 0x24, 1, cmd);
	if(s < 0) {
		printk("[%s][%d]: i2c write block data failed\n", __func__, __LINE__);
		return -1;
	}

	mdelay(16);

	s = i2c_smbus_read_i2c_block_data(i2c_client, 0x00, 6, bytes);
	if(s < 0) {
		printk("[%s][%d]: i2c read block data failed\n", __func__, __LINE__);
		return -1;
	}

	temp = (bytes[0] << 8) + bytes[1];
	humi = (bytes[3] << 8) + bytes[4];

	if(bytes[2] != crc(&bytes[0], 2)) {
		temp = 0;
		printk("[%s][%d] Temperature CRC error\n", __func__, __LINE__);
	}

	if(bytes[5] != crc(&bytes[3], 2)) {
		humi = 0;
		printk("[%s][%d] Humidity CRC error\n", __func__, __LINE__);
	}