How to reset E220 modem via UART?

[george_santiago]

Hi Renzo

Is there a method to reset the E220 modem?
I made a code to reset the ESP32 periodically. I would like to reset the E220 modem as well. I found the.method ResponseStatus LoRa_E220::resetModule(), but it is not implemented. Is it possible to reset the E220 via the UART?

[Renzo Mischianti]

Hi George,
no not exist specified reset method.
To do something similar, I set the default configuration via the library to the device, or I use the EByte USB board and set the default config.
Bye Renzo

[chemmex]

Hi Renzo,

Some of my E220-900T22 boards sometimes stop receiving the data. Having re-initialized them with the library doesn’t help. But after I reset the configuration with E220 RF Setting utility, they go back to life again.
Where does the magic happen? Does the utility just write the default configuration or there are some undocumented uart commands? Should I sniff the uart to see what’s happening?

[george_santiago]

Hi Renzo
Thanks for the answer.

In ESP32, we have ESP.restart() method
So isn’t there an equivalent ( E220.restart() ) for the E220?
I want to implement a routine like this just in case.
Ex:
If the endpoint(ESP32) does not receive a message from the Gateway within 60 minutes, then:

E220.restart();
delay(100);
ESP.restart();

Thanks

[Renzo Mischianti]

Ahh! ok, sorry, now I understand.
I think the simplest thing to do is to flush the UART buffer, unfortunately, I put under private section the flush and cleanUARTBuffer.
But I can add this simple change in the next version.
Bye Renzo

[carlosjml4]

hello best regards

I would like to know how I can link two radios, one is E32900T20D and the other is E32915T20D.

I have configured the same parameters in both radios, taking care in the direction and the channel, so that both the channel and the transmission rate match.

I have been careful to match the channel, knowing that the E32900, has a different start (862) and the E32915 at (900)

Thank you for your attention

[Author]

Posts