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Delayed RX IRQ with STM32WL5x Transceiver with LoRa

Associate II


I'm using the STM32WL55 for LoRa communication.

I found out that when receiving a packet the RX IRQ from the transceiver is executed in a delay from when the packet finished transmitting.

From my tests this delay depends on the channel configuration and the delay is around the time of a single symbol (around 85% of a symbol time, changing slightly between configurations).

The timing of this IRQ is crucial for me to time my system's operations.

Is this delay expected? If so, is there a formula for it? Is there a way to remove the delay altogether?

Thank you

Associate II

I'm still looking for help.

Is this a known issue or am I the first to report it?

Thank you