// Décodeur LoRaWAN officiel : UV254-LB (Dragino)
// Source : https://github.com/TheThingsNetwork/lorawan-devices/blob/master/vendor/dragino/uv254-lb.js
// The Things Network Device Repository, fichier publié par le constructeur, distribué sans modification.
// Format : decodeUplink(input) (TTN v3 / ChirpStack v4). Hébergé par smartbuildings.fr.

function datalog(i,bytes){\n var aa= parseFloat((bytes[2+i]<<8 | bytes[2+i+1])/1000).toFixed(3); \n var string='['+ aa +']'+','; \n return string;\n}\n\nfunction Decoder(bytes, port) {\n if(port==5)\n {\n var freq_band;\n var sub_band;\n var sensor;\n \n if(bytes[0]==0x16)\n sensor= \"PS-LB\";\n \n var firm_ver= (bytes[1]&0x0f)+'.'+(bytes[2]>>4&0x0f)+'.'+(bytes[2]&0x0f);\n \n if(bytes[3]==0x01)\n freq_band=\"EU868\";\n else if(bytes[3]==0x02)\n freq_band=\"US915\";\n else if(bytes[3]==0x03)\n freq_band=\"IN865\";\n else if(bytes[3]==0x04)\n freq_band=\"AU915\";\n else if(bytes[3]==0x05)\n freq_band=\"KZ865\";\n else if(bytes[3]==0x06)\n freq_band=\"RU864\";\n else if(bytes[3]==0x07)\n freq_band=\"AS923\";\n else if(bytes[3]==0x08)\n freq_band=\"AS923_1\";\n else if(bytes[3]==0x09)\n freq_band=\"AS923_2\";\n else if(bytes[3]==0x0A)\n freq_band=\"AS923_3\";\n else if(bytes[3]==0x0F)\n freq_band=\"AS923_4\";\n else if(bytes[3]==0x0B)\n freq_band=\"CN470\";\n else if(bytes[3]==0x0C)\n freq_band=\"EU433\";\n else if(bytes[3]==0x0D)\n freq_band=\"KR920\";\n else if(bytes[3]==0x0E)\n freq_band=\"MA869\";\n \n if(bytes[4]==0xff)\n sub_band=\"NULL\";\n else\n sub_band=bytes[4];\n\n var bat= (bytes[5]<<8 | bytes[6])/1000;\n \n return {\n SENSOR_MODEL:sensor,\n FIRMWARE_VERSION:firm_ver,\n FREQUENCY_BAND:freq_band,\n SUB_BAND:sub_band,\n battery:bat,\n }\n }\n else if(port==7)\n {\n var Bat= (bytes[0]<<8 | bytes[1])/1000;\n for(var i=0;i<bytes.length-2;i=i+2)\n {\n var data= datalog(i,bytes);\n if(i=='0')\n data_sum=data;\n else\n data_sum+=data;\n }\n return{\n battery:Bat,\n DATALOG:data_sum\n }; \n }\n else\n {\n var decode={};\n decode.battery= (bytes[0]<<8 | bytes[1])/1000;\n decode.probe_mod= bytes[2]; \n decode.idc_intput_ma= (bytes[4]<<8 | bytes[5])/1000; \n decode.vdc_intput_v= (bytes[6]<<8 | bytes[7])/1000; \n decode.in1_pin_level= (bytes[8] & 0x08)? \"High\":\"Low\"; \n decode.in2_pin_level= (bytes[8] & 0x04)? \"High\":\"Low\"; \n decode.exti_pin_level= (bytes[8] & 0x02)? \"High\":\"Low\"; \n decode.exti_status= (bytes[8] & 0x01)? \"True\":\"False\";\n decode.absorbance= (bytes[6]<<8 | bytes[7])/1000+'mw/cm ²'; \n var absorbance= (bytes[6]<<8 | bytes[7])/1000;\n if (absorbance>5)\n {\n \n decode.absorbance= \"invalid data\"\n };\n if(bytes.length!=1)\n {\n return decode;\n }\n }\n}