gd-ant-plus
Version:
A node module for ANT+ - forked from longhorn/ant-plus
128 lines • 5.71 kB
JavaScript
"use strict";
/*
* ANT+ profile: https://www.thisisant.com/developer/ant-plus/device-profiles/#528_tab
* Spec sheet: https://www.thisisant.com/resources/stride-based-speed-and-distance-monitor/
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.StrideSpeedDistanceScanner = exports.StrideSpeedDistanceSensor = void 0;
const Ant = require("./ant");
const Constants = Ant.Constants;
const Messages = Ant.Messages;
class StrideSpeedDistanceSensorState {
constructor(deviceId) {
this.DeviceID = deviceId;
}
}
class StrideSpeedDistanceScanState extends StrideSpeedDistanceSensorState {
}
var PageState;
(function (PageState) {
PageState[PageState["INIT_PAGE"] = 0] = "INIT_PAGE";
PageState[PageState["STD_PAGE"] = 1] = "STD_PAGE";
PageState[PageState["EXT_PAGE"] = 2] = "EXT_PAGE";
})(PageState || (PageState = {}));
class StrideSpeedDistanceSensor extends Ant.AntPlusSensor {
constructor(stick) {
super(stick);
this.decodeDataCbk = this.decodeData.bind(this);
}
attach(channel, deviceID) {
super.attach(channel, 'receive', deviceID, StrideSpeedDistanceSensor.deviceType, 0, 255, 8134);
this.state = new StrideSpeedDistanceSensorState(deviceID);
}
decodeData(data) {
if (data.readUInt8(Messages.BUFFER_INDEX_CHANNEL_NUM) !== this.channel) {
return;
}
switch (data.readUInt8(Messages.BUFFER_INDEX_MSG_TYPE)) {
case Constants.MESSAGE_CHANNEL_BROADCAST_DATA:
case Constants.MESSAGE_CHANNEL_ACKNOWLEDGED_DATA:
case Constants.MESSAGE_CHANNEL_BURST_DATA:
if (this.deviceID === 0) {
this.write(Messages.requestMessage(this.channel, Constants.MESSAGE_CHANNEL_ID));
}
updateState(this, this.state, data);
break;
case Constants.MESSAGE_CHANNEL_ID:
this.deviceID = data.readUInt16LE(Messages.BUFFER_INDEX_MSG_DATA);
this.transmissionType = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 3);
this.state.DeviceID = this.deviceID;
break;
default:
break;
}
}
}
exports.StrideSpeedDistanceSensor = StrideSpeedDistanceSensor;
StrideSpeedDistanceSensor.deviceType = 124;
class StrideSpeedDistanceScanner extends Ant.AntPlusScanner {
constructor(stick) {
super(stick);
this.states = {};
this.decodeDataCbk = this.decodeData.bind(this);
}
scan() {
super.scan('receive');
}
decodeData(data) {
if (data.length <= (Messages.BUFFER_INDEX_EXT_MSG_BEGIN + 3) || !(data.readUInt8(Messages.BUFFER_INDEX_EXT_MSG_BEGIN) & 0x80)) {
console.log('wrong message format');
return;
}
const deviceId = data.readUInt16LE(Messages.BUFFER_INDEX_EXT_MSG_BEGIN + 1);
const deviceType = data.readUInt8(Messages.BUFFER_INDEX_EXT_MSG_BEGIN + 3);
if (deviceType !== StrideSpeedDistanceScanner.deviceType) {
return;
}
if (!this.states[deviceId]) {
this.states[deviceId] = new StrideSpeedDistanceScanState(deviceId);
}
if (data.readUInt8(Messages.BUFFER_INDEX_EXT_MSG_BEGIN) & 0x40) {
if (data.readUInt8(Messages.BUFFER_INDEX_EXT_MSG_BEGIN + 5) === 0x20) {
this.states[deviceId].Rssi = data.readInt8(Messages.BUFFER_INDEX_EXT_MSG_BEGIN + 6);
this.states[deviceId].Threshold = data.readInt8(Messages.BUFFER_INDEX_EXT_MSG_BEGIN + 7);
}
}
switch (data.readUInt8(Messages.BUFFER_INDEX_MSG_TYPE)) {
case Constants.MESSAGE_CHANNEL_BROADCAST_DATA:
case Constants.MESSAGE_CHANNEL_ACKNOWLEDGED_DATA:
case Constants.MESSAGE_CHANNEL_BURST_DATA:
updateState(this, this.states[deviceId], data);
break;
default:
break;
}
}
}
exports.StrideSpeedDistanceScanner = StrideSpeedDistanceScanner;
StrideSpeedDistanceScanner.deviceType = 124;
function updateState(sensor, state, data) {
const page = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA);
if (page === 1) {
state.TimeFractional = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 1);
state.TimeInteger = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 2);
state.DistanceInteger = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 3);
state.DistanceFractional = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 4) >>> 4;
state.SpeedInteger = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 4) & 0x0F;
state.SpeedFractional = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 5);
state.StrideCount = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 6);
state.UpdateLatency = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 7);
}
else if (page >= 2 && page <= 15) {
state.CadenceInteger = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 3);
state.CadenceFractional = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 4) >>> 4;
state.SpeedInteger = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 4) & 0x0F;
state.SpeedFractional = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 5);
state.Status = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 7);
switch (page) {
case 3:
state.Calories = data.readUInt8(Messages.BUFFER_INDEX_MSG_DATA + 6);
break;
default:
break;
}
}
sensor.emit('ssddata', state);
sensor.emit('ssdData', state);
}
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