ESP32S2: cpu.reset_reason is wrong when resetting from button or microcontroller #4304

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1. anecdata commented on Mar 2, 2021

   

   anecdata

   on Mar 2, 2021

   Last edited by anecdata

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   Possibly related: #3858
2. microdev1 commented on Mar 2, 2021

   

   microdev1

   on Mar 2, 2021

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   • The reset button is wired to S2's chip enable pin so it literally turns off the chip. That's the reason for POWER_ON status.
   • I am getting the expected SOFTWARE as reset reason when using microcontroller.reset(). Can you try with current main.
3. Neradoc commented on Mar 2, 2021

   

   Neradoc

   on Mar 2, 2021

   Last edited by Neradoc

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   Ah I was thinking something like that might be going on with the reset button. That's too bad.

   I tried latest S3, and compiled current main on the Magtag.
   Adafruit CircuitPython 6.2.0-beta.2-230-g64192b0eb on 2021-03-01; Adafruit MagTag with ESP32S2
   I tried manually calling microcontroller.reset() in the REPL.
   I also used this code on battery to exclude the possibility of USB messing with it.

   I get WATCHDOG in both cases. (Well, except on first boot).

   import board
   import displayio
   import microcontroller
   import terminalio
   import time
   from adafruit_display_text import label
   
   display = board.DISPLAY
   splash = displayio.Group(max_size=10)
   display.show(splash)
   
   text = label.Label(
       terminalio.FONT,
       scale = 3,
       color = (255,255,255),
       x = display.width // 2,
       y = display.height // 2 - 10,
       max_glyphs = 50,
       anchor_point = (0.5, 0.5),
   )
   splash.append(text)
   print(microcontroller.cpu.reset_reason)
   text.text = str(microcontroller.cpu.reset_reason)[28:]
   display.refresh()
   
   for x in range(20):
       print(microcontroller.cpu.reset_reason)
       time.sleep(1)
   microcontroller.reset() # <--- should result in the screen changing to SOFTWARE
4. microdev1 commented on Mar 2, 2021

   

   microdev1

   on Mar 2, 2021

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   Still unable to replicate this. Tried both in REPL and code.py.

   Adafruit CircuitPython 6.2.0-beta.2-230-g64192b0eb on 2021-03-02; microS2 with ESP32S2
   >>> import microcontroller
   >>> microcontroller.reset()
   # <--- Reset --->
   >>> microcontroller.cpu.reset_reason
   microcontroller.ResetReason.SOFTWARE
5. microdev1

   added

   espressifapplies to multiple Espressif chipsapplies to multiple Espressif chips

   on Mar 4, 2021
6. jepler

   added

   bug

   on Mar 15, 2021
7. jepler

   added this to the 6.x.x - Bug Fixes milestone on Mar 15, 2021
8. dhalbert

   modified the milestones: 6.x.x - Bug Fixes, 7.0.0 on Mar 31, 2021
9. Neradoc commented on May 15, 2021

   

   Neradoc

   on May 15, 2021

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   @microdev1 do you use the UF2 bootloader ? It seems to be what makes the difference.
   I get the same result as you when I rease_flash and install Circuitpython from the bin.
10. microdev1 commented on May 15, 2021

    

    microdev1

    on May 15, 2021

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    It seems to be what makes the difference.

    Yup! I get WATCHDOG with UF2 and the expected SOFTWARE with non-UF2 build.
11. tannewt

    assigned

    dhalbert

    on Jul 15, 2021
12. microdev1 commented on Jul 19, 2021

    

    microdev1

    on Jul 19, 2021

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    I just tested this with TinyUF2 0.5.0 and this seems to be fixed.
13. dhalbert commented on Jul 19, 2021

    

    dhalbert

    on Jul 19, 2021

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    This should be fixed now with the latest TinyUF2. Update your TinyUF2 bootloader to at least 0.5.0, following the instructions here: https://learn.adafruit.com/adafruit-magtag/install-uf2-bootloader. Thanks @microdev1 for testing and @hathach for the TinyUF2 fix.
14. dhalbert

    closed this as completedon Jul 19, 2021