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Re: ADC measure negative voltage??
Posted: Wed Jul 03, 2019 10:50 pm
by jimmo
You don't really need to turn off the ADC? Unlike the timer it's not doing anything when you're not using it.
Re: ADC measure negative voltage??
Posted: Thu Jul 04, 2019 12:18 am
by starter111
I think some hardware issues on my side, I have multiple IO, ADCs, connect to other device. The issue is when I power cycle other device once a while cause pyboard ADC not working anymore. But if I power down by steps, 3.3, 2.5, 2, 1.5..0 and the issue fixed.
Re: ADC measure negative voltage??
Posted: Thu Jul 18, 2019 8:33 pm
by starter111
I have more question...
Is it any free to use R/W register that I can save calibration value for each board, that won't get erase even Factory reset?
Re: ADC measure negative voltage??
Posted: Thu Jul 18, 2019 9:28 pm
by jimmo
If the filesystem isn't suitable, then you might find this uesful
viewtopic.php?f=12&t=6679