Added support for the LR1121 radio to the NRF52 Pro-Micro

[Nestpebble]

Added support for the LR1121 radio, tested as functional with an E80-900M2213S from CDEbyte.

[Nestpebble]

@markbirss I tried it and it works.

[markbirss]

Added support for the LR1121 radio, tested as functional with an E80-900M2213S from CDEbyte.

I have also myself tried other values for "#define LR11X0_DIO3_TCXO_VOLTAGE 1.6"

1.8 and 3.0

@Nestpebble

It failing with trunk formatting issues

variants/diy/nrf52_promicro_diy_tcxo/Schematic_Pro-Micro_Pinouts.png
-:- fmt Unoptimized image, fix by running 'trunk fmt' oxipng

variants/diy/nrf52_promicro_diy_tcxo/variant.h
-:- fmt Incorrect formatting, autoformat by running 'trunk fmt' clang-format

I think there is a space line 158 after #endif in variant.h?

the png you might convert to pdf ?

[Nestpebble]

I have also myself tried other values for "#define LR11X0_DIO3_TCXO_VOLTAGE 1.6"

1.8 and 3.0

Yeah, I just went with what has worked on other modules of the same type. 3.0V seems high unless the guidance is similar to Seeed, who iirc advise 0.2V under vcc

It failing with trunk formatting issues
[...]
I think there is a space line 158 after #endif in variant.h?

the png you might convert to pdf ?

Trunk doesn't work on windows, and my WSL is a mess. I'll sort it on a VM later. I'll convert the PNG to WEBP, too. Pdf may be too much.

[lyusupov]

Ebyte reference source code uses 1.8 V of TCXO power supply voltage.

[lyusupov]

E80-xxxM2213S_UserManual_EN_v1.0

DIO7 is a participant of RF switch matrix.

[markbirss]

E80-xxxM2213S_UserManual_EN_v1.0

DIO7 is a participant of RF switch matrix.

But the E80 don't have a additional connection for it ?

[Nestpebble]

E80-xxxM2213S_UserManual_EN_v1.0

DIO7 is a participant of RF switch matrix.

@caveman99 Can you comment on this? I'm cribbing your content here...

[caveman99]

Not familiar with the actual E80 design here, but if you don't wanna use GNSS scanning the DIO7 can be left undefined. For good measure i would define it as it is switched to the right position by the lib then for sure. In the rfswitch.h simply add a 3d switch column for DIO7 that is always false except in the GNSS case.