ms_sensors_read_serial(9)

💖 ms_sensors_read_serial(9) 💖

okay bestie, welcome to the Kernel API Manual page for ms_sensors_read_serial — the serial number read function. she reads the serial number, and we’re obsessed. 💅

🌸 NAME 🌸

ms_sensors_read_serial — serial number read function

✨ SYNOPSIS ✨

int ms_sensors_read_serial (struct i2c_client *client , u64 *sn );

🎀 ARGUMENTS 🎀

• client — pointer to i2c client
• sn — pointer to 64-bits destination value

🦋 DESCRIPTION 🦋

okay so this is the generic i2c serial number read function for Measurement Specialties devices. it’s used for the TSYS02d, HTU21, and MS8607 chipset. refer to the datasheet: http://www.meas-spec.com/downloads/HTU2X_Serial_Number_Reading.pdf

the sensor raw MSB serial number format is literally:

[ SNB3, CRC, SNB2, CRC, SNB1, CRC, SNB0, CRC]

the sensor raw LSB serial number format is:

[ X, X, SNC1, SNC0, CRC, SNA1, SNA0, CRC]

and the resulting serial number is:

[ SNA1, SNA0, SNB3, SNB2, SNB1, SNB0, SNC1, SNC0]

💜 RETURN 💜

0 on success, negative errno otherwise. that’s it, bestie — no cap. ✨

🌈 SEE ALSO 🌈

Kernel file: ./drivers/iio/common/ms_sensors/ms_sensors_i2c.c

• ms_sensors_reset(9)
• ms_sensors_read_prom_word(9)
• ms_sensors_convert_and_read(9)
• ms_sensors_crc_valid(9)
• ms_sensors_write_resolution(9)
• ms_sensors_show_battery_low(9)
• ms_sensors_show_heater(9)
• ms_sensors_write_heater(9)
• ms_sensors_ht_read_temperature(9)
• ms_sensors_ht_read_humidity(9)
• ms_sensors_tp_crc4(9)
• ms_sensors_tp_crc_valid_112(9)
• ms_sensors_tp_crc_valid_128(9)
• ms_sensors_tp_read_prom(9)
• ms_sensors_read_temp_and_pressure(9)

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mwah 💋 that’s the whole page. source/version: ./drivers/iio/common/ms_sensors; date: October 2026; page: ms_sensors_read_serial(9). byeee 🫶