Getting ATTiny84 with RFM84 to work as a node

Projects Programming
1

HI,

I've been banging my head on this for a while and feel like I'm close but just can't get it over the line, so here I am hoping someone out there can help.

I've been using the Moteino Gateway (RFM69/Gateway.ino at master · LowPowerLab/RFM69 · GitHub) and Node (RFM69/Node.ino at master · LowPowerLab/RFM69 · GitHub) sketches to successfully get two Moteino's as well as a Motenio (as the Gateway) and a UNO with an RFM69 attached to communicate together.
From that, I've left the Moteino Gateway in operation and proceeded to try and get the ATTiny84 and RFM69 combo to talk to it.
I used the procedure at this link to program the ATTiny - https://raspberry.tips/raspberrypi-tutorials/diy-temperatur-und-leuftfeuchte-sensoren-mit-rfm69cw-funksender (thank goodness for google translate). It suggests using this sketch - https://raspberry.tips/wp-content/uploads/2014/12/DHT22-PCB-Version.txt

I made sure that the 'myNodeID' and 'NODEID' were unique and that the 'network' and 'NETWORKID' were the same.
I also commented out every mention of ENCRYPTKEY in the Gateway so it didn't expect and encrypted packet (as the node sketch doesn't use encryption).

So I then start up the Gateway and view it through the serial monitor, where it say's it's waiting. I then turn on the node and nothing happens.

I have no idea why there is nothing being sent and/or received.

Any idea's or obvious mistakes I've made?

Thanks.

2

I added an LED to the circuit and added code to test the codes successful operation.

By doing that and cutting back the code I was able to find that the rf12_initialize line was causing the ATTiny84 to stop working, when that line is commented out the LED flashes fine through the rest of the code.

I then re-wrote a new piece of code using the RFM69_f.h (designed to work with ATTiny's) library instead of the RFM69.h library in Moteino's Node sketch, while also cutting the code right down.

I also found that the radio.initialize in that code also stopped the ATTiny84 from working, with the LED no longer flashing.

Does anyone know what that may be?

Could the code be freezing elsewhere as part of the radio.initialize?

3

In the linked pages I cannot find a reference to a RFM69_f.h file. Either provide complete links or post complete code.

Are you sure your hardware is soldered correctly? Post sharp pictures of your boards.