ms_sensors_show_heater(9)

✨ ms_sensors_show_heater ✨

okay bestie, gather round, because we're diving into the Kernel API Manual and this one is literally about asking a tiny sensor chip whether its heater is turned on. no cap. let's get into it 💅

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🦋 SYNOPSIS 🦋

ssize_t ms_sensors_show_heater(struct ms_ht_dev *dev_data, char *buf);

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🎀 ARGUMENTS 🎀

• dev_data — pointer to temperature/humidity device data. this is your little sensor bestie's info struct, slay.
• buf — pointer to char buffer to write result. this is where the answer goes, periodt.

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💖 DESCRIPTION 💖

so the way this works is: this function will read the heater enable value in the device and return 1 if the heater is enabled. iconic behavior, honestly.

she's used for HTU21 and MS8607 chipsets. those are her main characters 🫶

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🌸 RETURN 🌸

• length of sprintf on success 😌
• negative errno otherwise 😭

ngl if you get a negative errno back, something went wrong and you should probably pay attention to it. fr fr.

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🌈 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_read_serial(9)
• ms_sensors_write_resolution(9)
• ms_sensors_show_battery_low(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)

like, the whole ms_sensors friend group is here. iykyk 💀

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and that's the whole page bestie!! this gem lives in ./drivers/iio/common/ms_sensors, dropped October 2026, and you can find her under ms_sensors_show_heater(9). go check the heater, bestie, and slay the day 💜✨