Reading battery level from mmbasic

PicoCalc
3

Direct get bat info from PicoMIte(MMBasic), no

but I add the sample code in

basicly just like @pkr said

send i2c command 0x0b to the keyboard and get return data

Then I found out there is a bug in current keyboard firmware

if we send i2c command 0x0b to the kbd ,there is a high odds that will crash keyboard

And I fixed this bug

so If you are really interesting in this ,here is the docs for How to flash the new firmware into keyboard of picocalc

important note is if we want the correct battery percent

we need to insert batteries first without any cable
then Power ON PIcoCalc
then we can plug typec cable , get battery info from serial port or else.

There is also a shortcut on keyboard to get battery level

on keyboard press Alt+B
the top-left led will blink

  • 3 times means full,or above 80%
  • 2 times means 50%
  • 1 means low

However, due to the low power consumption of the picocalc ,even 1 blink will last enough time

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