Atmega4809 Curiosity Nano upload not working under Linux

[Szum123321]

Hi

I've recently bought the Microchip Atmega4809 Curiosity Nano dev board rev 5. Sadly, uploading doesn't work on Linux.
The error message says:

avrdude: Version 6.3-20201216
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "/home/[user]/.arduino15/packages/MegaCoreX/hardware/megaavr/1.0.8/avrdude.conf"
         User configuration file is "/home/[user]/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping
         Using Port                    : usb
         Using Programmer              : curiosity_updi
avrdude: usbdev_open(): Found nEDBG CMSIS-DAP, serno: ATML3094051800000641
avrdude: usbdev_open(): WARNING: failed to set configuration 1: Device or resource busy
avrdude: Found CMSIS-DAP compliant device, using EDBG protocol
avrdude: usbdev_send(): wrote -5 out of 912 bytes, err = Input/output error
avrdude: jtag3_edbg_prepare(): failed to send command to serial port

The issue occurs on both Arch Linux 5.12.3-arch1-1 and Linux Mint 20.04(i think). I tested both flatpak version 1.8.13 and the normal nightly build 1.8.14 2020.05.12 ide. I also did the test on Windows with ide 1.8.13 and everything worked.

Here is also kernel log when I connect teh device:

[ 6489.927841] usb 1-3: new full-speed USB device number 9 using xhci_hcd
[ 6490.099992] usb 1-3: New USB device found, idVendor=03eb, idProduct=2175, bcdDevice= 1.00
[ 6490.099998] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 6490.100001] usb 1-3: Product: nEDBG CMSIS-DAP
[ 6490.100003] usb 1-3: Manufacturer: Microchip Technology Incorporated
[ 6490.100005] usb 1-3: SerialNumber: ATML3094051800000641
[ 6490.172575] hid-generic 0003:03EB:2175.0008: hiddev96,hidraw2: USB HID v1.11 Device [Microchip Technology Incorporated nEDBG CMSIS-DAP] on usb-0000:05:00.3-3/input0
[ 6490.175067] cdc_acm 1-3:1.1: ttyACM0: USB ACM device
[ 6490.181022] usb-storage 1-3:1.4: USB Mass Storage device detected
[ 6490.181177] scsi host0: usb-storage 1-3:1.4
[ 6491.186761] scsi 0:0:0:0: Direct-Access     MCHP     Curiosity Nano   1.00 PQ: 0 ANSI: 3
[ 6491.187483] sd 0:0:0:0: [sda] 4096 512-byte logical blocks: (2.10 MB/2.00 MiB)
[ 6491.188052] sd 0:0:0:0: [sda] Write Protect is off
[ 6491.188056] sd 0:0:0:0: [sda] Mode Sense: 0f 00 00 00
[ 6491.190064] sd 0:0:0:0: [sda] No Caching mode page found
[ 6491.190072] sd 0:0:0:0: [sda] Assuming drive cache: write through
[ 6491.217449]  sda:
[ 6491.221043] sd 0:0:0:0: [sda] Attached SCSI removable disk

And when upload begin:

[ 6502.418058] usb 1-3: usbfs: interface 0 claimed by usbhid while 'avrdude' sets config #1

The same issue has been discussed here, on MegaCoreX github.

[leo60228]

Have you found a solution for this?

[leo60228]

This also affects the AVR128DB48 Curiosity Nano (which is expected, seeing as they use the same debugger).

[leo60228]

I've done some troubleshooting and these lines seem unrelated to the core issue:

avrdude: usbdev_open(): WARNING: failed to set configuration 1: Device or resource busy

[ 6502.418058] usb 1-3: usbfs: interface 0 claimed by usbhid while 'avrdude' sets config #1

They can be worked around by forcing usbhid, usb-storage, and cdc-acm to avoid claiming the device. This requires a kernel patch for the latter, but can be done via kernel flags for the former two. This doesn't seem to do anything other than remove the error message, however.

[leo60228]

Turns out these can be programmed by copying a .hex file to an emulated mass-storage device, which bypasses avrdude completely.

[Szum123321]

For now I installed newest version of avrdude from AUR (avrdude-svn) and replaced binary file in ~/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino18/bin/avrdude with a symlink to /usr/bin/avrdude