index out of bounds: the len is 9 but the index is 9; about lora-phy

[ceekdee]

The "index out of bounds: the len is 9 but the index is 9" is an indication that the first SPI read operation attempted failed. It is unclear to me why the enable_public_network setting should have an effect on that.

Are you running one of the Embassy examples, and what combination of MCU/LoRa board are you running? The first thing to look at is the setup for SPI.

[vDorst]

I found it, SPI frequency is way to high, 64MHz instead of the max 16 Mhz.
64 Mhz is used for the LCD which is also sharing the SPI bus.

Yes, I am using the embassy examples but I combined two of them to have LCD and LORA.
But sharing SPI bus is not so easy, It works I think but it is really ugly because LORA lib don´t accept SpiDevice.
So I had to write a wrapper around SpiBus to make it work.

This is the hardware I use.
Baseboard: https://www.waveshare.com/rp2040-lcd-0.96.htm (Modified: Moved LCD reset line to GP13)
Loraboard: https://www.waveshare.com/wiki/Pico-LoRa-SX1262

[ceekdee]

This is excellent information. lora-phy assumes ownership of the SPI bus because there is at least one MCU/LoRa chip combo that makes doing anything else problematic, if I remember correctly. I am glad to know there is an identified need for lora-phy to share the bus in some cases and have opened an issue for future consideration - unfortunately, I will be unavailable to work on that until the end of October.

Feel free to provide additional guidance in the issue I have opened.