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Arduino Nano Every VCP (SAMD11) fails after reconnecting several times. #11845

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tehkillerbee opened this issue Nov 29, 2022 · 1 comment
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Arduino Nano Every VCP (SAMD11) fails after reconnecting several times. #11845

tehkillerbee opened this issue Nov 29, 2022 · 1 comment
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Component: Firmware Limited to the contents of the firmwares folder in the core packages Type: Bug Type: Invalid Off topic for this repository, or a bug report determined to not actually represent a bug

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@tehkillerbee
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Hello,

We have noticed a strange issue with the Arduino Nano Every. We are currently using it in a configuration, where it can be powered from either USB or external 5V.

If we unplug/reconnect USB several times in a row (eg. 10 times or less), while the MCU is also powered through external 5V, it will usually stop responding to USB commands.

[ 1641.259130] usb 1-1: new full-speed USB device number 87 using xhci_hcd
[ 1641.408817] usb 1-1: New USB device found, idVendor=2341, idProduct=0058, bcdDevice= 1.00
[ 1641.408833] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1641.408840] usb 1-1: Product: Arduino Nano Every
[ 1641.408846] usb 1-1: Manufacturer: Arduino LLC
[ 1641.408851] usb 1-1: SerialNumber: 79A2E0BE51514A4E434B2020FF0B4633
[ 1641.416271] cdc_acm 1-1:1.0: ttyACM0: USB ACM device
[ 1644.161726] usb 1-1: USB disconnect, device number 87
[ 1645.011262] usb 1-1: new full-speed USB device number 88 using xhci_hcd
[ 1645.160488] usb 1-1: New USB device found, idVendor=2341, idProduct=0058, bcdDevice= 1.00
[ 1645.160504] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1645.160511] usb 1-1: Product: Arduino Nano Every
[ 1645.160517] usb 1-1: Manufacturer: Arduino LLC
[ 1645.160522] usb 1-1: SerialNumber: 79A2E0BE51514A4E434B2020FF0B4633
[ 1645.163561] cdc_acm 1-1:1.0: ttyACM0: USB ACM device
[ 1646.644814] usb 1-1: USB disconnect, device number 88
[ 1647.638987] usb 1-1: new full-speed USB device number 89 using xhci_hcd
[ 1647.788649] usb 1-1: New USB device found, idVendor=2341, idProduct=0058, bcdDevice= 1.00
[ 1647.788664] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1647.788671] usb 1-1: Product: Arduino Nano Every
[ 1647.788677] usb 1-1: Manufacturer: Arduino LLC
[ 1647.788683] usb 1-1: SerialNumber: 79A2E0BE51514A4E434B2020FF0B4633
[ 1647.792096] cdc_acm 1-1:1.0: ttyACM0: USB ACM device
[ 1649.255027] usb 1-1: USB disconnect, device number 89
[ 1650.563019] usb 1-1: new full-speed USB device number 90 using xhci_hcd
[ 1650.715927] usb 1-1: New USB device found, idVendor=2341, idProduct=0058, bcdDevice= 1.00
[ 1650.715932] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1650.715934] usb 1-1: Product: Arduino Nano Every
[ 1650.715936] usb 1-1: Manufacturer: Arduino LLC
[ 1650.715937] usb 1-1: SerialNumber: 79A2E0BE51514A4E434B2020FF0B4633
[ 1650.718352] cdc_acm 1-1:1.0: ttyACM0: USB ACM device
[ 1652.019528] usb 1-1: USB disconnect, device number 90
[ 1653.554804] usb 1-1: new full-speed USB device number 91 using xhci_hcd
[ 1653.704118] usb 1-1: New USB device found, idVendor=2341, idProduct=0058, bcdDevice= 1.00
[ 1653.704134] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1653.704142] usb 1-1: Product: Arduino Nano Every
[ 1653.704147] usb 1-1: Manufacturer: Arduino LLC
[ 1653.704152] usb 1-1: SerialNumber: 79A2E0BE51514A4E434B2020FF0B4633
[ 1653.707254] cdc_acm 1-1:1.0: ttyACM0: USB ACM device
[ 1654.947625] usb 1-1: USB disconnect, device number 91
[ 1656.582950] usb 1-1: new full-speed USB device number 92 using xhci_hcd
[ 1656.731956] usb 1-1: New USB device found, idVendor=2341, idProduct=0058, bcdDevice= 1.00
[ 1656.731971] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1656.731979] usb 1-1: Product: Arduino Nano Every
[ 1656.731984] usb 1-1: Manufacturer: Arduino LLC
[ 1656.731990] usb 1-1: SerialNumber: 79A2E0BE51514A4E434B2020FF0B4633
[ 1656.735186] cdc_acm 1-1:1.0: ttyACM0: USB ACM device
[ 1658.118115] usb 1-1: USB disconnect, device number 92
[ 1659.802809] usb 1-1: new full-speed USB device number 93 using xhci_hcd
[ 1659.952061] usb 1-1: New USB device found, idVendor=2341, idProduct=0058, bcdDevice= 1.00
[ 1659.952076] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1659.952083] usb 1-1: Product: Arduino Nano Every
[ 1659.952088] usb 1-1: Manufacturer: Arduino LLC
[ 1659.952093] usb 1-1: SerialNumber: 79A2E0BE51514A4E434B2020FF0B4633
[ 1659.955226] cdc_acm 1-1:1.0: ttyACM0: USB ACM device
[ 1661.226333] usb 1-1: USB disconnect, device number 93
[ 1662.942955] usb 1-1: new full-speed USB device number 94 using xhci_hcd
[ 1663.092296] usb 1-1: New USB device found, idVendor=2341, idProduct=0058, bcdDevice= 1.00
[ 1663.092303] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1663.092306] usb 1-1: Product: Arduino Nano Every
[ 1663.092308] usb 1-1: Manufacturer: Arduino LLC
[ 1663.092310] usb 1-1: SerialNumber: 79A2E0BE51514A4E434B2020FF0B4633
[ 1664.430570] usb 1-1: can't set config #1, error -71

The errors vary, but usually along the following

  • can't set config #1, error -71
  • device descriptor read/64, error -110

The only solution is to power cycle the 5V supply while having disconnected USB. Pressing the reset button has no effect.

We can see the m4809 is still alive (heartbeat LED) so I assume the SAMD11 is the culprit. Is there a way to reset the SAMD11 from the m4809?
@per1234 per1234 added Component: Firmware Limited to the contents of the firmwares folder in the core packages Type: Bug labels Nov 29, 2022
@tehkillerbee tehkillerbee mentioned this issue Dec 2, 2022
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@tehkillerbee
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Moved this issue to ArduinoCore-megaavr
arduino/ArduinoCore-megaavr#125

@per1234 per1234 added the Type: Invalid Off topic for this repository, or a bug report determined to not actually represent a bug label Dec 2, 2022
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