8000 SD card doesn't work after calling go_to_sleep() on Pysense/Pytrack · Issue #216 · pycom/pycom-micropython-sigfox · GitHub
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SD card doesn't work after calling go_to_sleep() on Pysense/Pytrack #216

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SD card doesn't work after calling go_to_sleep() on Pysense/Pytrack#216
@campbellsinclair

Description

@campbellsinclair
campbellsinclair
opened on Oct 11, 2018

WiPy3.0, release='1.18.1.r1', version='v1.8.6-849-b0520f1 on 2018-08-29'

Tested on both:
Pytrack v1.1 with pytrack_0.0.8.dfu firmware
Pysense (v1.0 and v1.1) with pysense_0.0.8.dfu firmware

SanDisk Ultra 32GB micro SD HC I

  • Exact steps to cause this issue
import pysense
pysense_board = pysense.Pysense()
pysense_board.setup_sleep(10)
pysense_board.go_to_sleep(False)

# wait for reboot

import machine
sd = machine.SD()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
OSError: the requested operation failed

I expected to be able to access the SD card after sleeping. If I eject and then reinsert the SD card after sleeping, it works.

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