STAR pipettes: read a channel's pressure sensor, and auto-adjust it - #1343
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Nothing could read what a channel's pressure sensor measures, or zero the sensor when its offset has drifted. request_channel_pressure reads it now (Px RP), a signed pressure in Pa. auto_adjust_pressure_sensor re-runs the sensor's gain and offset adjustment (Px AC); the channel must be open to the air, tips off, or the firmware refuses with error 72. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Nothing could read a channel's pressure sensor or zero it, so pressure-based checks had no baseline to start from.
request_channel_pressure(channel)reads the channel's pressure sensor (Px RP).auto_adjust_pressure_sensor(channel)zeroes it against ambient (Px AC).Tests: the exact frames and the reading's conversion.
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