WIO-SX1262 conflict with I2C

[Nokke]

Hi Forum,

I have a problem with my current project. I want to use a XIAO SAMD processor with the “WIO-SX1262 for XIAO” module (not the kit with ESP32S3) and a Grove sensor AHT20 to send temperature and humidity data with LoRa. The problem is that the LoRa module has a conflict with the I2C pins. I2C uses pins 4 (SDA) and 5 (SCL) but the LoRa module uses also PIN 4 as NSS.

I tried to switch the I2C pins to Pins 6 (TX → SDA) and 7 (RX → SCL) with different libs (SoftWire, TwoWire, SoftwareWire). But nothing works.

Is there a simple solution for this? Can somebody help me. Many thanks in advance.

Regards Nokke

[buchiprof]

+1

Hello,

I have the same issue with “the kit” (Xiao Esp32 S3 + Wio-SX1262) when try to read and send measurments frome a BME280 on I2C.

Greetings

Seb

[msfujino]

Here is an example of connecting an I2C display for your reference.

Using the “Wio-SX1262 for XIAO” to easily build LoRa point-to-point communication with various XIAOs

[SX1262forXIAO] “Wio-SX1262 for XIAO” can be easily connected to a variety of XIAOs, LoRa point-to-point communication can be built using Arduino. And using the RadioLib library for LoRa, sketch will work on any XIAO without modification. I tried the following XIAOs SAMD21, nRF52840, RP2040, ESP32C3, ESP32S3, ESP32C6, MG24, but nRF52840(mbed) and MG24 could not be compiled because they are not supported by RadioLib. As shown in the link below, “LoRa-E5 mini” with SX1262 has a communication r…

[Nokke]

Hi msfujino,

thanks for you answer. Yes, I saw this before. But in your example you can initialize the display directly with pins 6 and 7.

I try to use sensors like Grove SGP30 and AHT20. For this I have to use “Wire.h” or something similar. I just gave FlexWire a try and it seems to work. I have to do further tests.