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boot.py

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# boot.py -- runs on boot-up

# Let's you choose which script to run.

# > To run 'datalogger.py':

# * press reset and do nothing else

# > To run 'cardreader.py':

# * press reset

# * press user switch and hold until orange LED goes out

import pyb

pyb.LED(3).on() # indicate we are waiting for switch press

pyb.delay(2000) # wait for user to maybe press the switch

switch_value = pyb.Switch()() # sample the switch at end of delay

pyb.LED(3).off() # indicate that we finished waiting for the switch

pyb.LED(4).on() # indicate that we are selecting the mode

if switch_value:

pyb.usb_mode('CDC+MSC')

pyb.main('cardreader.py') # if switch was pressed, run this

else:

pyb.usb_mode('CDC+HID')

pyb.main('datalogger.py') # if switch wasn't pressed, run this

pyb.LED(4).off() # indicate that we finished selecting the mode