ms_sensors_write_heater(9)

💖 ms_sensors_write_heater(9) 💖

okay bestie, welcome to the Kernel API Manual entry for ms_sensors_write_heater — yes, it’s giving “tiny function, very specific job” energy, and we’re gonna get into it. 🎀

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✨ NAME ✨

ms_sensors_write_heater — write device heater 🔥

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🌸 SYNOPSIS 🌸

ssize_t ms_sensors_write_heater (struct ms_ht_dev *dev_data , const char
*buf , size_t len );

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🦋 ARGUMENTS 🦋

• dev_data — pointer to temperature/humidity device data. literally the device’s little info stash 💅
• buf — pointer to char buffer from user space. yes, from user space, bestie 👀
• len — length of buf. gotta know how much buffer we’re working with 🫶

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💜 DESCRIPTION 💜

This function will write 1 or 0 value in the device to enable or disable heater. no cap, that’s the whole vibe: 1 = heater on, 0 = heater off. 🔥

This function is used for HTU21 and MS8607 chipsets. iconic little chipset moment, fr fr. ✨

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⭐ RETURN ⭐

length of buffer, negative errno otherwise. so: happy path gives you the buffer length, sad path gives you a negative errno. periodt. 💅

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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_show_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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okay that’s the whole page, bestie 🫶 — sourced from ./drivers/iio/common/ms_sensors, dated October 2026, and yes, the page is literally ms_sensors_write_heater(9). periodt. 💅