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adafruit / circuitpython

CircuitPython - a Python implementation for teaching coding with microcontrollers
https://circuitpython.org
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ITSYM4 Express doesnt respond after downloading code on Ubuntu Linux #1103

Closed labishrestha closed 5 years ago

labishrestha commented 6 years ago

Boot_out.txt contents: Adafruit CircuitPython 3.0.0 on 2018-07-09; Adafruit ItsyBitsy M4 Express with samd51g19

Steps to replicate issue: 1) Plug in ITSYM4 Express to USB port, green led animates, the Neopixel turns on all colors 2) Open mu-editor, load existing code -> Error: The file "code.py" is already open. 2) Paste D13 LED blink demo code 3) Click 'Check' -> Zero problems found 4) Click 'Save' -> Neopixel Blinks one time, then nothing happens

labishrestha commented 6 years ago

Additionally, when I click "Serial" Button first time, Mu says : Cannot connect to device on port /dev/ttyACM0 Then if I click 'Serial' button again, (whether or not I hit the reset button and wait), the serial console shows up, but If I press any key, I dont get the >>> prompt and nothing else happens

tannewt commented 6 years ago

Do you have any other computers you can try it on? Thanks!

labishrestha commented 6 years ago

I dont have another computer at the moment, but I was able to replicate a possibly related issue on another brand new ITSYM4 board. Here's what I did:

1) Plugged In new board 2) Paste D13 LED blink demo code -> Works fine 3) Forced error in the code by changing the line 'led.value = False' to 'D14.value = False' 4) Neopixel turned on all colors 5) Reverted the changes made in step 3) -> Neopixel Still full color on, Red LED doesnt blink 6) Reset the board by pressing the reset button -> Neopixel keeps animating green 7) Board seems un-usable at this point.

labishrestha commented 6 years ago

Update: Was able to test this on a windows 10 machine, and I got both the boards working again after I reflashed CircuitPython

tannewt commented 6 years ago

Thanks for the reproduction steps! I'll try and look in the next week or so.

tannewt commented 5 years ago

I haven't been able to reproduce this. @labishrestha please comment if you are able to cause this problem with 4.0.0 Beta 5 or newer. An Itsy Bitsy M4 I have here has 3.0.0-beta.0 on it which is quite old.