rp2040-sx1278

[01Space]

Can you make it support rp2040 development board?

[chandrawi]

This LoRa library built for Arduino framework and it has dependency with some Arduino core library including SPI library. So, clearly this library will not working outside Arduino development environment.

Are you already test this library using RP2040?

You should check that Arduino has RP2040 development board.

https://docs.arduino.cc/hardware/nano-rp2040-connect

[chandrawi]

Update, I have check Arduino RP2040 core library here.

I think using this core library, LoRa library should work. But onReceive() and onTransmit() methods will not work because attachInterrupt() is not implemented in the RP2040 SPI library. It is described here.

Currently I don't have Raspberry pi pico or any RP2040 board. So, I can't test it yet.

[01Space]

thank you! https://github.com/earlephilhower/arduino-pico Arduino can support rp2040, but the current Lora libraries do not support rp2040 (raspberry PI Pico)，I designed a Lora + 2040 + LCD development board

[chandrawi]

Can you point out at which point this LoRa library does not support rp2040?

Some error message while you trying upload Arduino sketch, may be? So I can help to fix compatibility issue with rp2040.

[01Space]

Arduino:1.8.16 (Windows 10), ："Raspberry Pi Pico, 2MB (no FS), 125 MHz, Small (-Os) (standard), Disabled, Disabled, None, Pico SDK"

C:\Users\86186\AppData\Local\Arduino15\packages\rp2040\hardware\rp2040\1.12.0\libraries\LoRaRF\src\SX126x_API.cpp: In static member function 'static bool SX126x_API::reset(int8_t)':

C:\Users\86186\AppData\Local\Arduino15\packages\rp2040\hardware\rp2040\1.12.0\libraries\LoRaRF\src\SX126x_API.cpp:29:1: error: no return statement in function returning non-void [-Werror=return-type]

29 | }

  | ^

cc1plus.exe: some warnings being treated as errors

exit status 1

thank you! I choose Pico to compile, but I can't compile

[chandrawi]

Try to modify function type from bool to void in SX126x_API.cpp and SX126x_API.h files located at LoRaRF library folder.

Change in SX126x_API.cpp

bool SX126x_API::reset(int8_t reset)
{
    pinMode(reset, OUTPUT);
    digitalWrite(reset, LOW);
    delay(1);
    digitalWrite(reset, HIGH);
}

to

void SX126x_API::reset(int8_t reset)
{
    pinMode(reset, OUTPUT);
    digitalWrite(reset, LOW);
    delay(1);
    digitalWrite(reset, HIGH);
}

and in SX126x_API.h

static bool reset(int8_t reset);

to

static void reset(int8_t reset);

[01Space]

thank you! I just used https://github.com/jgromes/RadioLib This library can accept data, but it must be connected to sx1278 dio1 pin success! [SX1278] Data: Hello World! [SX1278] RSSI: -53.00 dBm [SX1278] SNR: 12.50 dB [SX1278] Frequency error: -635.44 Hz [SX1278] Waiting for incoming transmission ... timeout! [SX1278] Waiting for incoming transmission ... timeout! [SX1278] Waiting for incoming transmission ... success! [SX1278] Data: Hello World! [SX1278] RSSI: -54.00 dBm [SX1278] SNR: 13.75 dB [SX1278] Frequency error: -627.05 Hz [SX1278] Waiting for incoming transmission ... timeout! [SX1278] Waiting for incoming transmission ... timeout! [SX1278] Waiting for incoming transmission ... success! [SX1278] Data: Hello World!