TTN Smart Sensor (Restotracker)

Codec Preview

var packet_type = ["heart","fix_success","fix_false","sys_close_info","shake_info","idle_info","demolish_alarm","event","battery_consume","config","store_data","limit_gps_data"]; var dev_mode = ["standby mode","period mode","timing mode","motion mode"]; var dev_fix_type = ["work_mode_fix","down_request_fix"]; function substringBytes(bytes, start, len) { var char = []; for(var i = 0; i < len; i++) { char.push("0x"+ bytes[start+i].toString(16) < 0X10 ? ("0"+bytes[start+i].toString(16)) : bytes[start+i].toString(16) ); } return char.join(""); } function BytestoInt(bytes,start) { var value = ((bytes[start] << 24) | (bytes[start+1] << 16) | (bytes[start+2] << 8) | (bytes[start+3])); return value; } function Decoder(bytes, port) { var dev_info = {}; dev_info.pack_type = packet_type[port-1]; //common frame head if(port<=10) { dev_info.work_mode = dev_mode[bytes[0]&0x03]; dev_info.low_power_state = (bytes[0]>>2)&0x01; dev_info.demolish_state = (bytes[0]>>3)&0x01; dev_info.idle_state = (bytes[0]>>4)&0x01; dev_info.motion_state = (bytes[0]>>5)&0x01; if(port==2 || port ==3) { dev_info.fix_type = dev_fix_type[(bytes[0]>>6)&0x01]; } if(bytes[1]>0x80) { dev_info.ic_temperature = bytes[1] - 0x100 + "°C"; } else { dev_info.ic_temperature = bytes[1] + "°C"; } dev_info.lorawan_downlink_count = bytes[2]&0x0f; dev_info.battery_voltage = (22+((bytes[2]>>4)&0x0f))/10 + "V"; } if(port == 1) { var restart_reason = ["power_restart","ble_cmd_restart","lorawan_cmd_restart","switch_off_mode_restart"]; dev_info.last_restart_reason = restart_reason[bytes[3]]; ver_major = (bytes[4]>>6)&0x03; ver_mijor = (bytes[4]>>4)&0x03; ver_patch = bytes[4]&0x0f; dev_info.firmware_ver = "V" + ver_major+"."+ver_mijor+"."+ver_patch; dev_info.motion_count = BytestoInt(bytes,5); } else if(port == 2) { var fix_tech = ["wifi","ble","gps"]; var parse_len = 3; // common head is 3 byte var datas = []; tech = bytes[parse_len++]; dev_info.fix_tech = fix_tech[tech]; year = bytes[parse_len]*256 + bytes[parse_len+1]; parse_len += 2; mon = bytes[parse_len++]; days = bytes[parse_len++]; hour = bytes[parse_len++]; minute = bytes[parse_len++]; sec = bytes[parse_len++]; timezone = bytes[parse_len++]; if(timezone>0x80) { dev_info.utc_time = year + "-" + mon + "-" + days + " " + hour + ":" + minute + ":" + sec + " TZ:" + (timezone-0x100); } else { dev_info.utc_time = year + "-" + mon + "-" + days + " " + hour + ":" + minute + ":" + sec + " TZ:" + timezone; } datalen = bytes[parse_len++]; if(tech==0 || tech ==1) { for(var i=0 ; i<(datalen/7) ; i++) { var data = {}; data.mac = substringBytes(bytes, parse_len, 6); parse_len += 6; data.rssi = bytes[parse_len++]-256 +"dBm"; datas.push(data); } dev_info.mac_data = datas; } else { lat =BytestoInt(bytes,parse_len); parse_len += 4; lon =BytestoInt(bytes,parse_len); parse_len += 4; if(lat>0x80000000) lat = lat-0x100000000; if(lon>0x80000000) lon = lon-0x100000000; dev_info.lat = lat/10000000; dev_info.lon = lon/10000000; dev_info.pdop = bytes[parse_len] /10; } } else if(port == 3) { var fix_false_reason = ["wifi_fix_time_timeout","wifi_fix_tech_timeout","wifi_module_nofind","ble_fix_time_timeout","ble_fix_tech_timeout","ble_adv","gps_no_budget","gps_coarse_acc_timeout","gps_fine_acc_timeout","gps_fix_timeout","gps_assistnow_timeout","gps_cold_start_timeout","down_request_fix_interrupt","motion_start_fix_false_by_motion_end","motion_end_fix_false_by_motion_start"]; var parse_len = 3; var datas = []; reason = bytes[parse_len++]; dev_info.fix_false_reason = fix_false_reason[reason]; datalen = bytes[parse_len++]; if(reason<=5) //wifi and ble reason { if(datalen) { for(var i=0 ; i<(datalen/7) ; i++) { var data = {}; data.mac = substringBytes(bytes, parse_len, 6); parse_len += 6; data.rssi = bytes[parse_len++]-256 +"dBm"; datas.push(data); } dev_info.mac_data = datas; } } else if(reason<=11) //gps reason { pdop = bytes[parse_len++]; if(pdop!=0xff) dev_info.pdop = pdop/10 else dev_info.pdop = "unknow"; dev_info.gps_satellite_cn = bytes[parse_len] +"-" + bytes[parse_len+1] +"-" + bytes[parse_len+2] +"-" + bytes[parse_len+3] ; } } else if(port == 4) { var sys_close_reason = ["ble_cmd_close","lorawan_cmd_close","reed_switch_close"]; dev_info.sys_close_reason = sys_close_reason[bytes[3]]; } else if(port == 5) { dev_info.shake_num = bytes[3]*256+ bytes[4]; } else if(port == 6) { dev_info.idle_time = bytes[3]*256+ bytes[4]; } else if(port == 7) { var parse_len = 3; // common head is 3 byte year = bytes[parse_len]*256 + bytes[parse_len+1]; parse_len += 2; mon = bytes[parse_len++]; days = bytes[parse_len++]; hour = bytes[parse_len++]; minute = bytes[parse_len++]; sec = bytes[parse_len++]; timezone = bytes[parse_len++]; if(timezone>0x80) { dev_info.alarm_time = year + "-" + mon + "-" + days + " " + hour + ":" + minute + ":" + sec + " TZ:" + (timezone-0x100); } else { dev_info.alarm_time = year + "-" + mon + "-" + days + " " + hour + ":" + minute + ":" + sec + " TZ:" + timezone; } } else if(port == 8) { var event = ["motion start","moving fix start","motion end","lorawan downlink trigger uplink"]; dev_info.event_info = event[bytes[3]]; } else if(port == 9) { var parse_len = 3; dev_info.gps_work_time = BytestoInt(bytes,parse_len); parse_len += 4; dev_info.wifi_work_time = BytestoInt(bytes,parse_len); parse_len += 4; dev_info.ble_scan_work_time = BytestoInt(bytes,parse_len); parse_len += 4; dev_info.ble_adv_work_time = BytestoInt(bytes,parse_len); parse_len += 4; dev_info.lorawan_work_time = BytestoInt(bytes,parse_len); parse_len += 4; } else if(port == 10) { // } else if(port == 11) { // } else if(port == 12) { dev_info.work_mode = dev_mode[bytes[0]&0x03]; dev_info.low_power_state = bytes[0]&0x04; dev_info.demolish_state = bytes[0]&0x08; dev_info.idle_state = bytes[0]&0x10; dev_info.motion_state = bytes[0]&0x20; dev_info.fix_type = dev_fix_type[(bytes[0]>>6)&0x01]; dev_info.lorawan_downlink_count = bytes[1]&0x0f; dev_info.battery_voltage = (22+((bytes[2]>>4)&0x0f))/10 + "V"; var parse_len = 2; lat =BytestoInt(bytes,parse_len); parse_len += 4; lon =BytestoInt(bytes,parse_len); parse_len += 4; if(lat>0x80000000) lat = lat-0x100000000; if(lon>0x80000000) lon = lon-0x100000000; dev_info.lat = lat/10000000 ; dev_info.lon = lon/10000000; dev_info.pdop = bytes[parse_len]/10; } return dev_info; }