RFM12B - need some help

Wireless & IoT
1

Hello!

I’m using the RFM12B (3.3V) with a PIC18F452 (5V). Have appropriately dealt with shifting V levels.

I am using hardware SPI and have gotten the SPI parameters into the RFM12B.

I don’t know how to tell if it is transmitting. The nIRQ pin is supposed to go low once a byte is sent, but either it is high all the time or low all the time and it is inconsistent.

I know that my receiver isn’t picking anything up, even noise.

I need some help with troubleshooting.

Thanks!

Nora

2

maybe you can glean something from

http://jeelabs.com/products/jeenode

(for AVR, not PIC)

There are links to docs and code (Arduino) and examples.

Also, in the HopeRF documents, there is one with super-simple (too simple) C code examples for TX and RX. But the jeelabs examples are better.

I don’t frequent PICland anymore so there may be stuff out there.