mirror of https://github.com/espruino/BangleApps
Update hrmexp.js
Ben Jabituya
GitHub
parent
4288d600e7
commit
a611126292
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@ -1,97 +1,149 @@
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var counter = 1;
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var logging_started;
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var interval;
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var value;
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//ADVANCED SETTINGS
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var lower_limit_BPM = 49;
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var upper_limit_BPM = 140;
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var deviation_threshold = 3;
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var file = require("Storage").open("hrm_log.csv", "w+");
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file.write("");
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var target_heartrate = 70;
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var heartrate_set;
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file = require("Storage").open("hrm_log.csv", "a");
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function update_timer() {
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g.clear();
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g.setColor("#00ff7f");
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g.setFont("6x8", 4);
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g.setFontAlign(0, 0); // center font
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g.drawString(counter, 120, 120);
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g.setFont("6x8", 2);
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g.setFontAlign(-1, -1);
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g.drawString("-", 220, 200);
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g.drawString("+", 220, 40);
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g.drawString("GO", 210, 120);
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g.setColor("#ffffff");
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g.setFontAlign(0, 0); // center font
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g.drawString("Timer (minutes)", 120, 90);
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g.setFont("6x8", 4); // bitmap font, 8x magnified
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if (!logging_started)
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g.flip();
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}
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var currentBPM;
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var lastBPM;
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var firstBPM = true; // first reading since sensor turned on
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var HR_samples = [];
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var trigger_count = 0;
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var file = require("Storage").open("steel_log.csv","a");
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var launchtime;
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var alarm_length;
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function btn1Pressed() {
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if (!logging_started) {
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if (counter < 60)
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counter += 1;
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else
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counter = 1;
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update_timer();
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}
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}
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function btn3Pressed() {
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if (!logging_started) {
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if (counter > 1)
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counter -= 1;
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else
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counter = 60;
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update_timer();
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}
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if(!heartrate_set){
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target_heartrate++;
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update_target_HR();
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}
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}
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function btn2Pressed() {
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launchtime = 0 | getTime();
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file.write(launchtime + "," + "\n");
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logging_started = true;
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counter = counter * 60;
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interval = setInterval(countDown, 1000);
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Bangle.setHRMPower(1);
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heartrate_set = true;
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Bangle.setHRMPower(1);
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launchtime = 0|getTime();
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g.clear();
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g.setFont("6x8",2);
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g.drawString("tracking HR...", 120,120);
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g.setFont("6x8",3);
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}
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function update_target_HR(){
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g.clear();
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g.setColor("#00ff7f");
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g.setFont("6x8", 4);
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g.setFontAlign(0,0); // center font
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g.drawString(target_heartrate, 120,120);
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g.setFont("6x8", 2);
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g.setFontAlign(-1,-1);
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g.drawString("-", 220, 200);
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g.drawString("+", 220, 40);
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g.drawString("GO", 210, 120);
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g.setColor("#ffffff");
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g.setFontAlign(0,0); // center font
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g.drawString("target HR", 120,90);
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g.setFont("6x8", 1);
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g.drawString("if unsure, start with 7-10%\n less than waking average and\n adjust as required", 120,170);
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g.setFont("6x8",3);
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g.flip();
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}
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function fmtMSS(e) {
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var m = Math.floor(e % 3600 / 60).toString().padStart(2, '0'),
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s = Math.floor(e % 60).toString().padStart(2, '0');
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return m + ':' + s;
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function btn3Pressed(){
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if(!heartrate_set){
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target_heartrate--;
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update_target_HR();
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}
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}
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function countDown() {
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g.clear();
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counter--;
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if (counter == 0) {
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Bangle.setHRMPower(0);
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clearInterval(interval);
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g.drawString("Finished", g.getWidth() / 2, g.getHeight() / 2);
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Bangle.buzz(500, 1);
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}
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else
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g.drawString(fmtMSS(counter), g.getWidth() / 2, g.getHeight() / 2);
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}
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update_timer();
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setWatch(btn1Pressed, BTN1, { repeat: true });
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setWatch(btn2Pressed, BTN2, { repeat: true });
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setWatch(btn3Pressed, BTN3, { repeat: true });
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Bangle.on('HRM', function (hrm) {
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for (let i = 0; i < hrm.raw.length; i++) {
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value = hrm.raw[i];
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if (value < -2)
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value = -2;
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if (value > 6)
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value = 6;
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file.write(value + "," + "\n");
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function alarm(){
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if(alarm_length > 0){
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//Bangle.beep(500,4000);
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Bangle.buzz(500,1);
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alarm_length--;
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}
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else{
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clearInterval(alarm);
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if(trigger_count > 1)
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Bangle.setHRMPower(0);
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}
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}
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function average(nums) {
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return nums.reduce((a, b) => (a + b)) / nums.length;
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}
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function getStandardDeviation (array) {
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const n = array.length;
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const mean = array.reduce((a, b) => a + b) / n;
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return Math.sqrt(array.map(x => Math.pow(x - mean, 2)).reduce((a, b) => a + b) / n);
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}
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function checkHR() {
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var bpm = currentBPM, isCurrent = true;
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if (bpm===undefined) {
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bpm = lastBPM;
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isCurrent = false;
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}
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if (bpm===undefined || bpm < lower_limit_BPM || bpm > upper_limit_BPM)
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bpm = "--";
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if (bpm != "--"){
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HR_samples.push(bpm);
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// Terminal.println(bpm);
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}
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if(HR_samples.length == 5){
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g.clear();
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average_HR = average(HR_samples).toFixed(0);
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stdev_HR = getStandardDeviation (HR_samples).toFixed(1);
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g.drawString("HR: " + average_HR, 120,100);
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g.drawString("STDEV: " + stdev_HR, 120,160);
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HR_samples = [];
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if(average_HR < target_heartrate && stdev_HR < deviation_threshold){
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Bangle.setHRMPower(0);
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alarm_length = 4;
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setInterval(alarm, 2000);
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trigger_count++;
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var csv = [
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0|getTime(),
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launchtime,
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average_HR,
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stdev_HR
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];
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file.write(csv.join(",")+"\n");
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heartrate_set = false;
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update_target_HR();
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}
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}
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}
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update_target_HR();
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setWatch(btn1Pressed, BTN1, {repeat:true});
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setWatch(btn2Pressed, BTN2, {repeat:true});
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setWatch(btn3Pressed, BTN3, {repeat:true});
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Bangle.on('HRM',function(hrm) {
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if(trigger_count < 2){
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if (firstBPM)
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firstBPM=false; // ignore the first one as it's usually rubbish
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else {
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currentBPM = hrm.bpm;
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lastBPM = currentBPM;
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}
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checkHR();
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}
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});
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