RH_RF69 send hang due to waitPacketSent failed

[Pixinger]

Hi
I have problems with stable transmissions for the RFM69. Initialization seems to be fine, but when I transmit with _spRFM->send(_spData, 2) sometimes the call will never come back. It looks like the internal call waitPacketSend() is the reason. Does someone know what the reasons are for not returning from waitPacketSend? The comparison inside is while (_mode == RHModeTx). But what is responsible for not "leaving" the transmission-mode? Can it be that it is something like too much noise on the radio frequency or no receiver found? As far as I understand it is not a confirmed transmission, it is fire and forget?

Investigating further, it looks like the interrupt is not called. After that, the mode is for ever RHModexTX (which makes sense). The question is now, what can create such a scenario? Instable power supply? Some time the interrupt is fine, sometimes not.

Has someone an idea?

Kind regards
Pix

[antonmeyer]

_mode is set in the interrupt routine. Did you connect the right Pin to the interrupt?

[sebasira]

Hi! Did you solve it? I'm having a similar issue with RF95 at the waitPacketSend.

I'm using and Arduino Pro Mini Clone with a LoRa Bee. You talk about an interrupt pin. Which one is it? Where should be connected to the Arduino?

Right now I have only wired the SPI and D10 as ChipSelect. Which pin of the LoRa Bee is the interrupt?

Thank you!

[antonmeyer]

I have no LoRa Bee, but I recommend to search for the documentation. It could be DIO0. and on the arduino pin 2. This could be changed to 3 in the software setup. The interrupt tells the arduino that the packet was send.

[sebasira]

Thanks! I came back to post I've found the solution to my problem and I see your new answer.

Indeed, DIO0 is the interrupt that should be attached to pin 2 of Arduino.

This artivle was very helpful: http://cpham.perso.univ-pau.fr/LORA/LoRaDevices.html

Also there's a constrcutor in the Lib to specify wich pin of Arduino is CS and wich is IRQ. Defautls are 10 and 2