I have an interessting problem on all of my itsyBitsy M0( i tried 3 of them ) no matter which firmware (Bootloader) they have on.
If i upload the "Blink" example it works the first time. Then, if i try to upload the "Blink" example again it fails.
When this happens i get a windows error message that the USB device could not be installed.
A re-plugin of the itsy leads to the fading led and in windows it will show up the ITSYBOOT device for about 5 seconds and then the windows error message thet the USB device could not be installed pops up again. If i am very fast i can copy a new bootloader file and then the itsy will allow exactly one upload until it gets into the interessting state again.
BTW: I may use the double tap on reset while uploading from ArduinoIDE to get the blink example to upload and work again.
What could cause this issue?
Here the steps i did:
- Plug in ItsyBitsy M0
- Upload Blink example - Works
- Upload Blink example again - Fails with following error:
Code: Select all
Set binary mode SAM-BA operation failed Send auto-baud Set binary mode readWord(addr=0)=0x20002dd8 readWord(addr=0xe000ed00)=0x410cc601 readWord(addr=0x41002018)=0x10010305 version()=v1.1 [Arduino:XYZ] Jun 23 2019 17:45:14 chipId=0x10010005 Connected at 115200 baud readWord(addr=0)=0x20002dd8 readWord(addr=0xe000ed00)=0x410cc601 readWord(addr=0x41002018)=0x10010305 Atmel SMART device 0x10010005 found write(addr=0x20004000,size=0x34) An error occurred while uploading the sketch
- Itsy goes into LED Fading mode and after a while following errors pops up
- disconnect itsy bitsy and plug in again
- fading led mode. ITSYBOOT shows up for about 5 seconds
- windows USB error that it could not install device
- upload with doubletap on reset while uploading. Bloink example does sucessfully upload.
Code: Select all
UF2 Bootloader v3.7.0 SFHWRO
Model: ItsyBitsy M0 Express
Board-ID: SAMD21G18A-ItsyBitsy-v0