Work in process... AVR microprocessor, HopeRF RFM12B radios

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stevech
Posts: 9
Joined: Sat Apr 02, 2011 1:20 pm

Work in process... AVR microprocessor, HopeRF RFM12B radios

Post by stevech » Sat Apr 02, 2011 1:41 pm

Work in process... AVR microprocessor, HopeRF RFM12B radios (433, 868/902-929MHz), 2mW.
C/C++ code, initially Arduino, uses only Arduino base libraries.

So far, the code can send/receive structured packets with a header. In the header is the packet length (variable), node IDs, and flags for "ACK required", and a CRC. Then the data payload (variable sized), with a separate CRC.

Video - demo, each node sending 5 messages per second, each message containing header + 30 byte data payload, w/CRC checking. The two LEDs: On blinks on Received packet, the other for each transmitted packet.
MP4 https://www.opendrive.com/files?21411268_DziHF
MOV https://www.opendrive.com/files?21395015_rMSQJ

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