mpr_read_pressure(9)

✨ mpr_read_pressure(9) ✨

okay so this is a page from the Kernel API Manual — the mpr_read_pressure(9) girlies, come get y'all's pressure readings 💅

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💖 NAME 💖

mpr_read_pressure — bestie, it literally reads the pressure value from a sensor 🫶

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🌸 SYNOPSIS 🌸

int mpr_read_pressure (struct mpr_data *data , s32 *press );

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🎀 ARGUMENTS 🎀

• data — a pointer to the private data struct, yep that one, the struct with the private data in it 💜
• press — the output value read from the sensor. this is where the answer lands, no cap ✨

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🦋 DESCRIPTION 🦋

So the way this works: it reads from the sensor by sending and receiving telegrams. that's it, that's the mechanism, telegrams 📨 iconic honestly.

And if there's an end of conversion (EOC) interrupt registered, the function waits for that interrupt — for a maximum of one second. one sec and it's over, clock's ticking ⏰

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💀 CONTEXT 💀

Real talk: the function can sleep, so mind where you call it from 😴 and data->lock should be held when you call it. like, please hold the lock. hold it fr fr 🔒

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🔥 RETURN 🔥

• 0 — OK!! the pressure value could be read, we ate 👑
• -EBUSY — the sensor does not have a new conversion ready 🙈 like it's just not giving rn
• -ETIMEDOUT — timeout while waiting for the EOC interrupt ⏳ waited a whole second for nothing 😭
• -EIO — invalid status byte received from sensor 💀 the sensor sent nonsense, embarrassing for it

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/iio/pressure/mprls0025pa.c
• struct mpr_range_config(9)

go read those next, iykyk 📚

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mwah, that's the whole page 🩷 this lil beauty lives over in ./drivers/iio/pressure and it's dated October 2026 — see you in the future bestie, mwah mwah 💋✨