Implementing LoRaWAN WOR

[naveen-79]

How to implement LoRaWAN wake on receive while on low power sleep. I'm using the LoRa-E5-Mini.

[fpistm]

Hi @naveen-79
I don't know, never study this use case.
Currently, the LowPower library supports wake up from wakeup pin, RTC and Serial.

[naveen-79]

how will i put the device in always listen mode

[fpistm]

All API documented here:
https://stm32duino.github.io/STM32LoRaWAN/

[jpayalateva]

Radiolib solved the problem by remapping the internal interrupt pin of the STM32WL

/ In global scope, define the pin array and mode table
static const RADIOLIB_PIN_TYPE rfswitch_pins[] =
{PC3, PC4, PC5};
static const Module::RfSwitchMode_t rfswitch_table[] = {
{STM32WLx::MODE_IDLE, {LOW, LOW, LOW}},
{STM32WLx::MODE_RX, {HIGH, HIGH, LOW}},
{STM32WLx::MODE_TX_LP, {HIGH, HIGH, HIGH}},
{STM32WLx::MODE_TX_HP, {HIGH, LOW, HIGH}},
STM32WLx::END_OF_MODE_TABLE,
};

void setup() {
...
// Then in setup (before calling begin), pass them to radiolib
radio.setRfSwitchTable(rfswitch_pins, rfswitch_table);
...
}

jgromes/RadioLib#649

[jpayalateva]

Apparently, according to the documentation, Class B LoRaWAN is not implemented; wake up upon receiving data from LoRaWAN.

https://stm32duino.github.io/STM32LoRaWAN/
Not supported:
"Class B and C (the underlying stack has support for this, but it is not enabled or tested)."