Arduino language features do not work with Arduino Nano Every board

[kittaakos]

Describe the problem

The Arduino language features are not available after startup.

To reproduce

• Have no attached boards,
• Start IDE2,
• Select Arduino Uno board (can be any), verify language features work (make void loop to voidx loop), ✅
• Stop IDE2,
• Start IDE2,
• The Arduino Nano Every board is restored as the selected one,
• Make any compiler errors in the sketch, no error diagnostics 🐛,
• Select any other board from the Boards Select dialog,
• See that the Arduino features work again

LS_does_not_work_after_startup.mp4

Expected behavior

The LS correctly starts, and the Arduino language features are available after the IDE2 start and the selected board restoration.

Arduino IDE version

Version: 2.0.0-rc9 Date: 2022-07-20T13:46:43.411Z CLI Version: 0.25.0 [4fd95834] Copyright © 2022 Arduino SA

Operating system

macOS

Operating system version

12.3.1

Additional context

No response

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the latest nightly build
• My report contains all necessary details

[kittaakos]

It was a problem with the `Arduino Nano Every board. From the Arduino LS logs:

{"jsonrpc":"2.0","id":14,"method":"textDocument/documentSymbol","params":{"textDocument":{"uri":"file:///Users/a.kitta/Documents/Arduino/animated_lights/animated_lights.ino"}}}
>>>
Content-Length: 94

{"jsonrpc":"2.0","id":14,"result":null,"error":{"code":-32603,"message":"-32001 invalid AST"}}
<<<
Content-Length: 279

From the clangd logs:

I[16:42:24.783] --> reply:textDocument/documentSymbol("2") 55 ms, error: invalid AST
V[16:42:24.783] >>> {"error":{"code":-32001,"message":"invalid AST"},"id":"2","jsonrpc":"2.0"}

V[16:42:24.784] Indexing /Users/a.kitta/Library/Arduino15/packages/arduino/hardware/megaavr/1.8.7/cores/arduino/UART0.cpp (digest:=2C2164E4B817E7CD)
V[16:42:24.784] Indexing /Users/a.kitta/Library/Arduino15/packages/arduino/hardware/megaavr/1.8.7/cores/arduino/wiring_digital.c (digest:=0A45E0412AC388A2)
V[16:42:24.786] Ignored diagnostic. unknown target CPU 'atmega4809'
V[16:42:24.786] Ignored diagnostic. valid target CPU values are: avr1, avr2, avr25, avr3, avr31, avr35, avr4, avr5, avr51, avr6, avrxmega1, avrxmega2, avrxmega3, avrxmega4, avrxmega5, avrxmega6, avrxmega7, avrtiny, at90s1200, attiny11, attiny12, attiny15, attiny28, at90s2313, at90s2323, at90s2333, at90s2343, attiny22, attiny26, at86rf401, at90s4414, at90s4433, at90s4434, at90s8515, at90c8534, at90s8535, ata5272, attiny13, attiny13a, attiny2313, attiny2313a, attiny24, attiny24a, attiny4313, attiny44, attiny44a, attiny84, attiny84a, attiny25, attiny45, attiny85, attiny261, attiny261a, attiny441, attiny461, attiny461a, attiny841, attiny861, attiny861a, attiny87, attiny43u, attiny48, attiny88, attiny828, at43usb355, at76c711, atmega103, at43usb320, attiny167, at90usb82, at90usb162, ata5505, atmega8u2, atmega16u2, atmega32u2, attiny1634, atmega8, ata6289, atmega8a, ata6285, ata6286, atmega48, atmega48a, atmega48pa, atmega48pb, atmega48p, atmega88, atmega88a, atmega88p, atmega88pa, atmega88pb, atmega8515, atmega8535, atmega8hva, at90pwm1, at90pwm2, at90pwm2b, at90pwm3, at90pwm3b, at90pwm81, ata5790, ata5795, atmega16, atmega16a, atmega161, atmega162, atmega163, atmega164a, atmega164p, atmega164pa, atmega165, atmega165a, atmega165p, atmega165pa, atmega168, atmega168a, atmega168p, atmega168pa, atmega168pb, atmega169, atmega169a, atmega169p, atmega169pa, atmega32, atmega32a, atmega323, atmega324a, atmega324p, atmega324pa, atmega324pb, atmega325, atmega325a, atmega325p, atmega325pa, atmega3250, atmega3250a, atmega3250p, atmega3250pa, atmega328, atmega328p, atmega328pb, atmega329, atmega329a, atmega329p, atmega329pa, atmega3290, atmega3290a, atmega3290p, atmega3290pa, atmega406, atmega64, atmega64a, atmega640, atmega644, atmega644a, atmega644p, atmega644pa, atmega645, atmega645a, atmega645p, atmega649, atmega649a, atmega649p, atmega6450, atmega6450a, atmega6450p, atmega6490, atmega6490a, atmega6490p, atmega64rfr2, atmega644rfr2, atmega16hva, atmega16hva2, atmega16hvb, atmega16hvbrevb, atmega32hvb, atmega32hvbrevb, atmega64hve, at90can32, at90can64, at90pwm161, at90pwm216, at90pwm316, atmega32c1, atmega64c1, atmega16m1, atmega32m1, atmega64m1, atmega16u4, atmega32u4, atmega32u6, at90usb646, at90usb647, at90scr100, at94k, m3000, atmega128, atmega128a, atmega1280, atmega1281, atmega1284, atmega1284p, atmega128rfa1, atmega128rfr2, atmega1284rfr2, at90can128, at90usb1286, at90usb1287, atmega2560, atmega2561, atmega256rfr2, atmega2564rfr2, atxmega16a4, atxmega16a4u, atxmega16c4, atxmega16d4, atxmega32a4, atxmega32a4u, atxmega32c4, atxmega32d4, atxmega32e5, atxmega16e5, atxmega8e5, atxmega32x1, atxmega64a3, atxmega64a3u, atxmega64a4u, atxmega64b1, atxmega64b3, atxmega64c3, atxmega64d3, atxmega64d4, atxmega64a1, atxmega64a1u, atxmega128a3, atxmega128a3u, atxmega128b1, atxmega128b3, atxmega128c3, atxmega128d3, atxmega128d4, atxmega192a3, atxmega192a3u, atxmega192c3, atxmega192d3, atxmega256a3, atxmega256a3u, atxmega256a3b, atxmega256a3bu, atxmega256c3, atxmega256d3, atxmega384c3, atxmega384d3, atxmega128a1, atxmega128a1u, atxmega128a4u, attiny4, attiny5, attiny9, attiny10, attiny20, attiny40, attiny102, attiny104, attiny202, attiny402, attiny204, attiny404, attiny804, attiny1604, attiny406, attiny806, attiny1606, attiny807, attiny1607, attiny212, attiny412, attiny214, attiny414, attiny814, attiny1614, attiny416, attiny816, attiny1616, attiny3216, attiny417, attiny817, attiny1617, attiny3217
E[16:42:24.786] Indexing /Users/a.kitta/Library/Arduino15/packages/arduino/hardware/megaavr/1.8.7/cores/arduino/wiring_digital.c failed: Couldn't build compiler instance
I[16:42:24.786] --> $/progress
V[16:42:24.786] >>> {"jsonrpc":"2.0","method":"$/progress","params":{"token":"backgroundIndexProgress","value":{"kind":"report","message":"4/31","percentage":12}}}

[per1234]

Thanks @kittaakos. I see we are already tracking the lack of support for the ATmega4809 of the Nano Every by the clangd language server at #31

What remains is this:

The Arduino Nano Every board is restored as the selected one,

It sounds like it may be a defect. I am able to reproduce the similar board selection reversion on a Save As operation (#657), but I was not able to reproduce the problem of reversion on startup.

Would you mind providing more detailed instructions to reproduce the issue?

[kittaakos]

Would you mind providing more detailed instructions to reproduce the issue?

1. Mimic a fresh start

• I opened the Dev Tools (with Cmd+Option+I/Ctrl+Alt+I),
• I typed localStorage.clear() into the Console and pressed Enter (if the execution is successful, undefined will be printed to the Console),
• Stopped/Started IDE2,
• No board was selected; the dropdown shows Select Board, ✅
• (You can also manually wipe the cache folder of the IDE2)

2. Select your attached Arduino Nano Every board from the dropdown,
3. Detach the board,
4. Open the board select dialog and select Arduino Uno (you can select any board),
5. Stop the IDE2,
6. Start IDE2, and see that Arduino Nano Every is restored.

👆 Only selections that are "ready for verification" (there is a selected port for the board) are remembered and restored by IDE2.

every-nano.mp4

[per1234]

Only selections that are "ready for verification" (there is a selected port for the board) are remembered and restored by IDE2.

Sounds unnecessarily convoluted, as seems to be the rule with the "automagical" board selection stuff added in Arduino IDE 2.x, but apparently it is intended so I'll close this as a duplicate of #31