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ENG-CANSAT-RFM69HCW-TEST (voir la source)
Version du 11 octobre 2018 à 20:31
, 11 octobre 2018 à 20:31→Forewords
* a '''Data Receiver''' made with the second RFM69HCW that should be linked to a second micro controller.
* a '''Data Receiver''' made with the second RFM69HCW that should be linked to a second micro controller.
As the kit contains only one micro controller (the Feather M0 Express), we will use the very common Arduino UNO as micro controller for the '''Data Receiver'''.
As the kit contains only one micro controller (the Feather M0 Express), we will use the very common '''Arduino UNO''' (not included) as micro controller for the '''Data Receiver'''.
In this simple exemple:
# The '''Data Emitter''' will send a message and wait 500ms for a response.
# The '''Data Receiver''' will receive the message.
# The '''Data Receiver''' will send a reply.
[[Fichier:ENG-CANSAT-RFM69HCW-TEST-00.jpg]]
[[Fichier:ENG-CANSAT-RFM69HCW-TEST-00.jpg]]
As we will see in the sample, 2 key items will be highlighted:
# The frequency must be identical in the emitter and receiver (eg: 433.0 MHz in this example).
# The encryption key must be identical on the both side.
== Installing the library ==
If not done yet, we will have to install the RadioHead library in Arduino IDE.
That library support lot of RFM modules including our RFM69HCW.
Adafruit did fork the RadioHead library and add some useful sample, so we will install the small|Adafruit's RadioHead forked library.
{{download-box|https://github.com/adafruit/RadioHead/archive/master.zip|Download RadioHead forked library}}
For easy install, you can run Arduino IDE and open the menu "Sketch -> Add a .ZIP library..."
{{ENG-CANSAT-TRAILER}}
{{ENG-CANSAT-TRAILER}}