EWATTCH LoRaWAN Decode

README.md

EWATTCH LoRaWAN Decode

flow.json

[{"id":"4830a254.c8ad14","type":"function","z":"4c2beb28.33872c","name":"Decode-Ewattch-Payload","func":"var lengthpayload = msg.payload.length;\nvar temperature;\nvar humidity;\nvar presence;\nvar luminosity;\nvar co2;\n\nif(msg.hardware_serial.includes(\"70B3\")){\n    for(var i=2;i<(lengthpayload-2);i++){\n    switch(msg.payload[i]){\n        case 0x00:  // temperature\n            temperature=msg.payload[i+2]*0x100+msg.payload[i+1];\n            temperature=temperature/100.0;\n            msg.temperature=temperature;\n            i=i+2;\n            break;\n            \n        case 0x04:  // humidité\n            humidity=msg.payload[i+1]*0.5;\n            msg.humidity=humidity;\n            i=i+1;\n            break;\n            \n        case 0x08: // CO2\n            co2=msg.payload[i+2]*0x100+msg.payload[i+1];\n            msg.co2=co2;\n            i=i+2;\n            break;\n            \n        case 0x10: // luminosity\n            luminosity=msg.payload[i+2]*0x100+msg.payload[i+1];\n            msg.luminosity=luminosity*1.0;\n            i=i+2;\n        break;\n        \n        case 0x14:  //presence\n            presence=msg.payload[i+2]*0x100+msg.payload[i+1];\n            msg.presence=presence*1.0;\n            i=i+2;\n        break;\n    \n    }\n}\n\nmsg.payload={\n     Dates : msg.payload.timestamp,\n     DevEUID : msg.hardware_serial,\n     Temperature : temperature,\n     Humidity : humidity,\n     Luminosity : luminosity,\n     Presence : presence,\n     CO2 : co2\n    }\nreturn msg\n}","outputs":"1","noerr":0,"x":570,"y":300,"wires":[["ab8787b1.11626","ca15188d.53ab08","3eab46c7.5b3b92"]],"outputLabels":["msg"]}]