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docs/use/rfm69.md

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+# RFM69 gateway
+
+The RFM69 gateway enables to send and receive signal from/to another RFM69 module. It is based on the work of @bbx10 https://github.com/bbx10/nanohab
+
+### Receiving data from RFM signal
+
+Subscribe to all the messages with mosquitto or open your MQTT client software:
+
+`    sudo mosquitto_sub -t +/# -v`
+
+Generate your RF signals with an Moteino on other RFM69 based devices, you will receive :
+
+`home/OpenMQTTGateway/RFM69toMQTT 60,-98,0`
+
+In this case "60,-98,0" is the signal sent by another RFM69 + a wemos D1 with the sample sketch [rfm69send](https://github.com/1technophile/rfm69send/blob/master/rfm69send.ino) loaded in it.
+
+### Send data by MQTT to convert it on RFM69 signal 
+`mosquitto_pub -t "home/OpenMQTTGateway/commands/MQTTtoPilight" -m '{"data":"test"}'`
+
+This command will send by RFM69 the string *test* to the default receiver id 99
+
+### Send data by MQTT with advanced RFM69 parameters
+
+RFM69 sending support one advanced parameters the target receiver ID.
+
+Example:
+SimplePublishing
+`mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoRFM69/RCV_34 -m 33151562`
+will make the gateway send to the receiver ID 34 (node number) instead of 99
+
+JsonPublishing
+`mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoRFM69 -m '{"data":1315156,"receiverid":34}'`
+This command will send by RFM69 the string *test* to the receiver id 34 instead of 99
+
+### RFM69 acknowledgment
+Unlike RF or IR RFM69 as a complete acknowledgment mechanism. When a signal is sent the RFM69 can acknowledge the fact that the recipient received the message.
+In this case the gateway will publish the sent message to the topic defined by subjectGTWRFM69toMQTT macro.