Draft: feat(esp32): add Bluetooth Classic variant for connectivity with legacy devices

[arthurlutz]

fixes #10381

🤝 Attestations

• I have tested that my proposed changes behave as described.
• I have tested that my proposed changes do not cause any obvious regressions on the following devices:
  • Heltec (Lora32) V3
  • LilyGo T-Deck
  • LilyGo T-Beam
  • RAK WisBlock 4631
  • Seeed Studio T-1000E tracker card
  • Other (please specify below)

ESP32-WROOM dev board

[arthurlutz]

This compiles and runs on my device but clearly it's not functional, submitting it to have first feedbacks on how this could be done.

I was surprised to have to modify so many files to "disable" nimbleBluetooth, there is either a better way or some refactoring to make sure it can be put aside might be a pre-requirement for this feature.

I do have some crashes for the moment, not sure if this is related to the board or my code :

INFO  | ??:??:?? 82 [PowerFSM] The device started, now you can pair it with bluetooth classic!
[ 82494][I][BluetoothSerial.cpp:903] setPin(): pin: 123456
[ 82502][I][BluetoothSerial.cpp:146] btSetPin(): pin set
Guru Meditation Error: Core  0 panic'ed (StoreProhibited). Exception was unhandled.

Core  0 register dump:
PC      : 0x401b3578  PS      : 0x00060e30  A0      : 0x80172431  A1      : 0x3fff1a10
A2      : 0x3fffccd8  A3      : 0x00000000  A4      : 0x00002006  A5      : 0x3ffd5870
A6      : 0x00000c3a  A7      : 0x00000001  A8      : 0x801b3578  A9      : 0x3fff19f0
A10     : 0x00000000  A11     : 0x00000014  A12     : 0x3ffffca0  A13     : 0x3fff03fc
A14     : 0x3fff1f0c  A15     : 0x000000f9  SAR     : 0x0000001f  EXCCAUSE: 0x0000001d
EXCVADDR: 0x0000000c  LBEG    : 0x400929b0  LEND    : 0x400929c6  LCOUNT  : 0xffffffff


Backtrace: 0x401b3575:0x3fff1a10 0x4017242e:0x3fff1a30 0x401aa85d:0x3fff1a50 0x4019c11d:0x3fff1a90 0x4019c0b3:0x3fff1ab0




ELF file SHA256: 40dc1baaba19669c

E (48111) esp_core_dump_flash: Core dump flash config is corrupted! CRC=0x7bd5c66f instead of 0x0
Rebooting...
ets Jun  8 2016 00:22:57