SX1278 4FSK

[Eugene-long]

Hello,
I have tested RadioLib FSK4 Transmit Example. I can't to set up the baud rate more than 1200 baud. Is it correct? I need to set up 4800.

[jgromes]

There's no such limit explicitly set, however, it is possible that at high baudrates the module won't be able to generate the 4-FSK tones cleanly.

[Eugene-long]

Is it correct?

// set output power to 2 dBm (accepted range is -9 to +22 dBm)
if (radio.setOutputPower(2) == RADIOLIB_ERR_INVALID_OUTPUT_POWER) {
Serial.println(F("Selected output power is invalid for this module!"));
while (true);
}

[jgromes]

I'm not sure what you're asking about - you can set output power regardless of the modulation/protocol you select. Is there anything in the documentation that would suggest otherwise?

[Eugene-long]

Hello Jan,
Output power set up for 4-FSK is working. Thank you.

[Eugene-long]

Hello Jan,
FYI. I have checked "RadioLib FSK4 Transmit Example" on ESP32C3 and SX1278. The result is the same as on Arduino Nano. It is possible to set up any Baudrate, but the maximum Baudrate is 2400 baud. (The min Baudrate is no less 1 baud).

[jgromes]

It's like I wrote previously, there is no explicit limit. But I haven't investigated high baud rate 4FSK. I'm not sure what is the use case for you, perhaps using CC1101 would be an option for you, since it supports 4-FSK via the CC1101::beginFSK4 method and should be able to handle up to 600 kbps

[Eugene-long]

OK Thank you for info.