LoraErrorParam: Command "+RFPOWER=" has failed!

Arduino Boards
1

Hi,

I noticed that calling set_rf_power(RFO, 1) from lora.py raises LoraErrorParam: Command "+RFPOWER=" has failed! in H7. Any advice on solving this issue?

Thank you!

2

Do you write the command like that ? What’s RFO ? It should be lora.RF_MODE_RFO:

set_rf_power(lora.RF_MODE_RFO, 1)

Also you can enable debugging, it will print some extra info that could help us debug the issue:

lora = Lora(band=BAND_EU868, poll_ms=60000, debug=True)
3

Sorry for the typo. Yes, LoRaErrorParam always pops up when calling set_rf_power(). This error also happens with your suggested line of code. However, get_tx_power() works fine. Below is example of the code I wrote:

from lora import *
lora = Lora(band=BAND_EU868, poll_ms=60000, debug=False)
print(lora.get_tx_power())
lora.set_rf_power(RF_MODE_RFO, 1)
print(lora.get_tx_power())

May I also ask about the architecture of LoRa firmware/driver in OpenMV firmware? Is it based on prior MKRWAN1300 driver flashed? Thank you!

4

Can you post the output of the above script ? I don’t have any Lora devices to test with.

May I also ask about the architecture of LoRa firmware/driver in OpenMV firmware? Is it based on prior MKRWAN1300 driver

It’s basically just a port of this library:

That’s the AT command for RFPOWER. Does it work with Arduino firmware ? You should test that, if not then maybe the Lora module firmware needs to be updated or something.

5

Thank you again for your reply. Below is the output shown in OpenMV IDE’s terminal:

lora_output

6

Try updating the Lora module firmware, there must be some sketch to do that. Also try it with Arduino firmware, if it doesn’t work either then there’s nothing I can do.

7

Although, it seems to be complaining about the parameters, so maybe the command is supported but you need to use the other mode RF_MODE_PABOOST

8

Thank you for your advice! I will try it out.

9

This has been tested with Arduino firwmare/sketch and it fails too, so it’s very likely an issue with the Lora module firmware.