mcuee
commented
2 years ago Looks like Nano Every sketch upload support is broken since the 1200bps trick is not employed, even using the on-board programmer and not using bootloader.
The following is using the onboard jtag2updi programmer to upload the blink sketch.
Edit: this may work. Please refer to the later comments.
"C:\\Users\\xiaof\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-size" -A "C:\\Users\\xiaof\\AppData\\Local\\Temp\\arduino_build_488130/Blink.ino.elf"
Sketch uses 752 bytes (1%) of program storage space. Maximum is 49152 bytes.
Global variables use 4 bytes (0%) of dynamic memory, leaving 6140 bytes for local variables. Maximum is 6144 bytes.
C:\Users\xiaof\AppData\Local\Arduino15\packages\MegaCoreX\tools\avrdude\7.0.0-arduino2/bin/avrdude -CC:\Users\xiaof\AppData\Local\Arduino15\packages\MegaCoreX\hardware\megaavr\1.1.0/avrdude.conf -v -patmega4809 -cjtag2updi -PCOM12 -Uflash:w:C:\Users\xiaof\AppData\Local\Temp\arduino_build_488130/Blink.ino.with_bootloader.hex:i -Ufuse0:w:0x00:m -Ufuse1:w:0x54:m -Ufuse2:w:0x01:m -Ufuse4:w:0x00:m -Ufuse5:w:0b11001001:m -Ufuse6:w:0x06:m -Ufuse7:w:0x00:m -Ufuse8:w:0x00:m -Ulock:w:0xC5:m
avrdude: Version 7.0
Copyright (c) Brian Dean, http://www.bdmicro.com/
Copyright (c) Joerg Wunsch
System wide configuration file is "C:\Users\xiaof\AppData\Local\Arduino15\packages\MegaCoreX\hardware\megaavr\1.1.0/avrdude.conf"
Using Port : COM12
Using Programmer : jtag2updi
avrdude: jtagmkII_getsync() attempt 1 of 10: sign-on command: status -1
avrdude: jtagmkII_getsync() attempt 2 of 10: sign-on command: status -1
avrdude: jtagmkII_getsync() attempt 3 of 10: sign-on command: status -1
avrdude: jtagmkII_getsync() attempt 4 of 10: sign-on command: status -1
avrdude: jtagmkII_getsync() attempt 5 of 10: sign-on command: status -1
avrdude: jtagmkII_getsync() attempt 6 of 10: sign-on command: status -1
avrdude: jtagmkII_getsync() attempt 7 of 10: sign-on command: status -1
avrdude: jtagmkII_getsync() attempt 8 of 10: sign-on command: status -1
avrdude: jtagmkII_getsync() attempt 9 of 10: sign-on command: status -1
An error occurred while uploading the sketch
avrdude: jtagmkII_getsync() attempt 10 of 10: sign-on command: status -1
avrdude: jtagmkII_getsync(): timeout/error communicating with programmer (status -1)
avrdude: opening programmer "jtag2updi" on port "COM12" failed
avrdude done. Thank you.
MCUdude
As of now MegaCoreX does not support the optiboot bootloader for Arduino Nano Every. https://github.com/MCUdude/MegaCoreX#arduino-nano-every
If we look at the Nano Every pin-out from MegaCoreX, it is possible to use the alternative UART fo the bootloader (UART 1/2/3) if we keep UART 0 for the on-board jtag2updi programmer usage.
Reference schematics: https://content.arduino.cc/assets/NANOEveryV3.0_sch.pdf
However, burning the bootloader will fail (choose UART1 default pins) using the default jtag2updi programmer. It seems that MegaCoreX does not apply the 1200bps trick for this board.