Why does not loop Txdone?

[thanapol199717]

Hi everyone, I have tried these two code snippets in order to send and receive data between them.

(https://github.com/sandeepmistry/arduino-LoRa/blob/master/examples/LoRaSimpleGateway/LoRaSimpleGateway.ino) (https://github.com/sandeepmistry/arduino-LoRa/blob/master/examples/LoRaSimpleNode/LoRaSimpleNode.ino)

I think they both refuse to enter receiver mode as they keep on sending.

I'm using an Arduino nano with a SX1276.

[IoTThinks]

Try this https://github.com/sandeepmistry/arduino-LoRa/blob/master/examples/LoRaSenderNonBlockingCallback/LoRaSenderNonBlockingCallback.ino

And check if the TxDone is trigger.

[thanapol199717]

I think it's not a trigger.

[thanapol199717]

This is my register.

[IoTThinks]

I think it's not a trigger.

Frankly speaking, I never use TxDone event. :dagger: From your image, TxDone is printed once. => Hence it is called once?

[thanapol199717]

Yes i don't know why.

[IoTThinks]

I will try with my esp32 + SX1276 this evening and see. In the meantime, try to use external power for SX1276.

It is a known fact that Arduino Nano doesn't have enough power for sx1276.

[thanapol199717]

Okay, thank you very much, I have to try to get a 3.3v supply for the SX1276 and I can use the Uno?

[IoTThinks]

Uno is sure better. Sx127x can use 3.3v supply from Uno.

[thanapol199717]

Okay, I'll try and tell you the results

[thanapol199717]

I have tried not enough from supply. Thank you so much. Do you have an example of a Raspberrypi Gateway that can reply to Arduino? The same is true for the example I sent. But I want it to be Raspberrypi and Arduino to control my device.

Thank you for giving me new knowledge.

[IoTThinks]

So the TXDone works fine with external power on Arduino Nano?

[thanapol199717]

Yeah, I think so. I let sx1276 get 3.3v power from Uno, but the control is from Nano.

[IoTThinks]

Ok solved. For the rest, you need to do some Google on your own first.

[thanapol199717]

Thank you very much.