Could not find adafruit feather m0 in the list of given devices

Community Help With My Project
1

Hi what should I do if I can’t find Adafruit feather m0 in the list of given devices?

2

it is not offically supported but you try connecting it to cayenne MQTT broker with the adrafruit MQTT library.

3

Thanks for your help. Could you please assist me in detail on how to connect cayenne MQTT with the Adafruit MQTT library?

4

the feather m0 supports on wifi101 library. Here is an example on how to connect to MQTT Arduino WiFi101 MQTT Example (using PubSubClient by Nick O'Leary) · GitHub
you will need to makes changes based on esp8266-MQTT-v1/esp8266-MQTT-v1.cpp at master · spacefolder/esp8266-MQTT-v1 · GitHub to connect it to cayenne.

5

Thank you so much. I am bigginer and have no knowledge in this field. I am using arduino-lmic/ttn-otaa-feather-us915-dht22.ino at master · mcci-catena/arduino-lmic · GitHub so I will just write these statements in my code?

#include <SPI.h>
#include <WiFi101.h>
#include <PubSubClient.h>
6

you need to be specific, whether you are using a MQTT or lora board. can you share a link to the device you are using.

7

Bundle of thanks for your kind support. I am using this Pinouts | Adafruit Feather M0 Radio with LoRa Radio Module | Adafruit Learning System with DHT22 Sensor Arduino Wiring | Using LoraWAN and The Things Network with Feather | Adafruit Learning System.

The Gateway is Dragino LPS8

8

here is a code for lmic and cayenne lpp Uplink and downlink CayenneLPP payload to TTN using LMIC library - #13 by shramik_salgaonkar

9

Sir, If I add the mentioned part of your code in the place of temperature, then what should i add for humidity section?

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image3924×2160 1010 KB 

void do_send(osjob_t* j){
    // Check if there is not a current TX/RX job running
    if (LMIC.opmode & OP_TXRXPEND) {
        Serial.println(F("OP_TXRXPEND, not sending"));
    } else {
        // read the temperature from the DHT22
        float temperature = dht.readTemperature();
        Serial.print("Temperature: "); Serial.print(temperature);
        Serial.println(" *C");
        // adjust for the f2sflt16 range (-1 to 1)
        temperature = temperature / 100;

        // read the humidity from the DHT22
        float rHumidity = dht.readHumidity();
        Serial.print("%RH ");
        Serial.println(rHumidity);
        // adjust for the f2sflt16 range (-1 to 1)
        rHumidity = rHumidity / 100;

        // float -> int
        // note: this uses the sflt16 datum (https://github.com/mcci-catena/arduino-lmic#sflt16)
        uint16_t payloadTemp = LMIC_f2sflt16(temperature);
        // int -> bytes
        byte tempLow = lowByte(payloadTemp);
        byte tempHigh = highByte(payloadTemp);
        // place the bytes into the payload
        payload[0] = tempLow;
        payload[1] = tempHigh;

        // float -> int
        uint16_t payloadHumid = LMIC_f2sflt16(rHumidity);
        // int -> bytes
        byte humidLow = lowByte(payloadHumid);
        byte humidHigh = highByte(payloadHumid);
        payload[2] = humidLow;
        payload[3] = humidHigh;

        // prepare upstream data transmission at the next possible time.
        // transmit on port 1 (the first parameter); you can use any value from 1 to 223 (others are reserved).
        // don't request an ack (the last parameter, if not zero, requests an ack from the network).
        // Remember, acks consume a lot of network resources; don't ask for an ack unless you really need it.
        LMIC_setTxData2(1, payload, sizeof(payload)-1, 0);
    }
    // Next TX is scheduled after TX_COMPLETE event.
}
10

here you will find all about cayenne LPP and data types Cayenne Docs