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March 25, 2021 12:21
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Helium LHT65 decoder function
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// https://github.com/helium/console-decoders | |
function Decoder(bytes, port) { | |
//Payload Formats of LHT65 Deveice | |
return { | |
//Battery Level | |
battery_level: | |
{ | |
"0":"Ultra Low", | |
"1":"Low", | |
"2":"OK", | |
"3":"Good", | |
} | |
[((bytes[0]<<8 | bytes[1])>>14)&0xFF], | |
//External sensor | |
external_sensor: | |
{ | |
"0":"No external sensor", | |
"1":"Temperature Sensor", | |
"4":"Interrupt/Door Sensor send", | |
"5":"Illumination Sensor", | |
"6":"ADC Sensor", | |
"7":"Interrupt Sensor count", | |
}[bytes[6]&0x7F], | |
//Battery,units:V | |
battery_voltage:((bytes[0]<<8 | bytes[1]) & 0x3FFF)/1000, | |
//SHT20,temperature,units: | |
temperature_sht20:((bytes[2]<<24>>16 | bytes[3])/100).toFixed(2), | |
//SHT20,Humidity,units:% | |
humidity_sht20:((bytes[4]<<8 | bytes[5])/10).toFixed(1), | |
//DS18B20,temperature,units: | |
temperature_ds18b20: | |
{ | |
"1":((bytes[7]<<24>>16 | bytes[8])/100).toFixed(2), | |
}[bytes[6]&0xFF], | |
//Exit pin level,PA4 | |
Exit_pin_level: | |
{ | |
"4":bytes[7] ? "High":"Low", | |
}[bytes[6]&0x7F], | |
//Exit pin status,PA4 | |
Exit_status: | |
{ | |
"4":bytes[8] ? "True":"False", | |
}[bytes[6]&0x7F], | |
//BH1750,illumination,units:lux | |
ILL_lx: | |
{ | |
"5":bytes[7]<<8 | bytes[8], | |
}[bytes[6]&0x7F], | |
//ADC,PA4,units:V | |
ADC_V: | |
{ | |
"6":(bytes[7]<<8 | bytes[8])/1000, | |
}[bytes[6]&0x7F], | |
//Exit count,PA4,units:times | |
Exit_count: | |
{ | |
"7":bytes[7]<<8 | bytes[8], | |
}[bytes[6]&0x7F], | |
//Applicable to working mode 4567,and working mode 467 requires short circuit PA9 and PA10 | |
No_connect: | |
{ | |
"1":"Sensor no connection", | |
}[(bytes[6]&0x80)>>7], | |
}; | |
} |
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