Codec for RFM-LR1 Bmeter

Devices
1

I am struggling with receiving data from RFM-LR1 B-meter. I have tried the below mentioned codec but it is giving an error

type:“UPLINK_CODEC”
error:“execute js error: js vm error: (anonymous): Line 1:2 Unexpected token * (and 5 more errors)”

Does anybody have a working codec for this device?

The codec used currently is:

function decodeUplink(input) {
var decoded = {
cpu_voltage: null,
cpu_temperature: null,
alarm_leakage: null,
alarm_removal: null,
alarm_magnetic: null,
alarm_excess_flow: null,
volume: null,
backflow_volume: null
};

const bytes = input.bytes;

var idx = 0;

// loop through message getting any data
while (idx < bytes.length) {
    if (bytes[idx++] == 0x01) {
        // then it's some data
        var data_type = bytes[idx++];
        switch (data_type) {
            case 0x03:
                idx += 6;
                break;
            case 0x05:
                break;
            case 0x06:
                // cpu voltage
                decoded.cpu_voltage = bytes[idx++] / 40; // 25mV per bit
                break;
            case 0x0A:
                // cpu temperature
                decoded.cpu_temperature = (((bytes[idx++] << 8) | bytes[idx++]) / 100) - 50; // 0.01c per bit offset of 50
                break;
            case 0x20:
                // alarms
                decoded.alarm_leakage = bytes[idx] & 0x01;
                decoded.alarm_removal = bytes[idx] & 0x08;
                decoded.alarm_magnetic = bytes[idx] & 0x20;
                decoded.alarm_excess_flow = bytes[idx] & 0x80;
                idx++;
                break;
            case 0x21:
                // volume
                decoded.volume = ((bytes[idx++] << 24) | (bytes[idx++] << 16) | (bytes[idx++] << 8) | bytes[idx++]) * 0.001;
                break;
            case 0x27:
                // back flow volume
                decoded.backflow_volume = ((bytes[idx++] << 24) | (bytes[idx++] << 16) | (bytes[idx++] << 8) | bytes[idx++]) * 0.001;
                break;
            case 0x22:
            case 0x2B:
                idx += 2;
                break;
            case 0x25:
                idx += 4;
                break;
            case 0x2C:
            case 0x2D:
                idx++;
                break;
            default:
                break;
        }
    }
}

return { data: decoded };

}

2

That should work maybe add the original_data variable in as well

unction decodeUplink(input) {
    var decoded = {
        original_data: input.bytes
        // cpu_voltage: null,
        // cpu_temperature: null,
        // alarm_leakage: null,
        // alarm_removal: null,
        // alarm_magnetic: null,
        // alarm_excess_flow: null,
        // volume: null,
        // backflow_volume: null
    };
  
    const bytes = input.bytes;

    var idx = 0;
    
    // loop through message getting any data
    while (idx < bytes.length) {
        if (bytes[idx++] == 0x01) {
            // then it's some data
            var data_type = bytes[idx++];
            switch (data_type) {
                case 0x03:
                    idx += 6;
                    break;
                case 0x05:
                    break;
                case 0x06:
                    // cpu voltage
                    decoded.cpu_voltage = bytes[idx++] / 40; // 25mV per bit
                    break;
                case 0x0A:
                    // cpu temperature
                    decoded.cpu_temperature = (((bytes[idx++] << 8) | bytes[idx++]) / 100) - 50; // 0.01c per bit offset of 50
                    break;
                case 0x20:
                    // alarms
                    decoded.alarm_leakage = bytes[idx] & 0x01;
                    decoded.alarm_removal = bytes[idx] & 0x08;
                    decoded.alarm_magnetic = bytes[idx] & 0x20;
                    decoded.alarm_excess_flow = bytes[idx] & 0x80;
                    idx++;
                    break;
                case 0x21:
                    // volume
                    decoded.volume = ((bytes[idx++] << 24) | (bytes[idx++] << 16) | (bytes[idx++] << 8) | bytes[idx++]) * 0.001;
                    break;
                case 0x27:
                    // back flow volume
                    decoded.backflow_volume = ((bytes[idx++] << 24) | (bytes[idx++] << 16) | (bytes[idx++] << 8) | bytes[idx++]) * 0.001;
                    break;
                case 0x22:
                case 0x2B:
                    idx += 2;
                    break;
                case 0x25:
                    idx += 4;
                    break;
                case 0x2C:
                case 0x2D:
                    idx++;
                    break;
                default:
                    break;
            }
        }
    }

    return { data: decoded };

}