Jan Jongboom
Two way data over LoRaWAN using Multitech mDot
This is example firmware for the Multitech mDot. It demonstrates how to:
- Do two-way data.
- Sleep aggressively and only wake up when the wake-up pin is triggered.
- Handle errors, retries and duty cycle errors.
- Cache data in non-volatile storage.
Based on mbed OS 5.1, hard faults against mbed OS 5.3 unfortunately. Can be compiled with GCC and ARMCC (but not IAR).
To do a new transmission, short pin D6 / PA_1.
Diff: README.md
- Revision:
- 0:20fbd6f66b11
- Child:
- 1:b604a2d6c54d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/README.md Tue Jan 03 13:20:36 2017 +0000
@@ -0,0 +1,52 @@
+# LoRa Soap dispenser
+
+Smart soap dispenser that sends out stuff over LoRa. Does not build with GCC, only ARMCC (also with mbed CLI).
+
+## Setup
+
+1. Set jumper JP95 (next to RESET button) to the two pins closest to the mDot.
+2. Attach something that generates an interrupt on D6 / PA_1.
+3. RFID code needs to be implemented, currently spits out a random ID.
+
+To get data into Device Connector:
+
+1. First get keys by exchanging a device cert for LoRa keys at http://apm-lora-eu2.cloudapp.net:5101.
+2. Add the keys to ``main.cpp``.
+3. Then under 'Resources' add:
+
+ ```
+ {
+ "dispenser/0/value": {
+ "mode": "r",
+ "defaultValue": "0"
+ },
+ "meta/0/timestamp": {
+ "mode": "r",
+ "defaultValue": ""
+ },
+ "meta/0/ids_seen": {
+ "mode": "r",
+ "defaultValue": ""
+ }
+ }
+ ```
+
+4. Under 'Process Data' add:
+
+ ```js
+ function (bytes) {
+ var ids = [];
+ for (var i = 0; i < (bytes.length - 2) / 4; i++) {
+ var c = bytes.slice(2 + (i * 4), 2 + (i * 4) + 4);
+ ids.push((c[0] << 24) + (c[1] << 16) + (c[2] << 8) + (c[3]));
+ }
+
+ return {
+ "dispenser/0/value": (bytes[0] << 8) + bytes[1],
+ "meta/0/timestamp": new Date().toISOString(),
+ "meta/0/ids_seen": ids.join(',')
+ };
+ }
+ ```
+
+5. Click 'Save' and your data should show up in Device Connector (after the next transmission).