Bug: CH1 and CH2 autorange set incorrectly

[cynthi8]

1. Reading a measurement from CH1 or CH2
2. Removing the measurement probes
3. Re-inserting them

yields incorrect results.

When _voltmeter_autorangeis bypassed by calling _measure_voltage directly, this issue does not occur.

Setup
I connected CH1 measurement pins to I2C VDD (3.3 V) and GND and ran this code

import time
import sys
from PSL import sciencelab
I = sciencelab.connect()

channel = sys.argv[1]

while True:
    voltage = I.multimeter.measure_voltage(channel)
    print(channel, "=", voltage)
    time.sleep(1)

Results

With _measure_voltage instead of measure_voltage,

[bessman]

Fixed in cc9ad27.

[cynthi8]

Ah ok, sorry, I didn't check. Thanks!

[bessman]

No worries. Good job on finding the bug either way. I'll draft a new release and push it to pypi shortly.