mirror of https://github.com/espruino/BangleApps
Update app.js
parent
aab2939011
commit
a590a2e7d3
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@ -2,7 +2,6 @@ var option = null;
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//debugging or analysis files
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var logfile = require("Storage").open("HRV_log.csv", "w");
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logfile.write(""); //reset HRV log
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logfile = require("Storage").open("HRV_log.csv", "a");
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@ -10,7 +9,10 @@ var csv = [
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"time",
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"sample count",
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"HR",
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"HRV"
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"SDNN",
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"RMSSD",
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"Temp",
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"movement"
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];
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logfile.write(csv.join(",")+"\n");
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@ -28,6 +30,7 @@ var sample_frequency = 51.6;
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var gap_threshold = 0.15;
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var hr_min = 40;
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var hr_max = 160;
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var movement = 0;
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function storeMyData(data, file_type) {
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log = raw_HR_array;
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@ -46,16 +49,19 @@ function average(samples) {
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return avg;
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}
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function StandardDeviation(data) {
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var m = average(data);
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return Math.sqrt(data.reduce(function (sq, n) {
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return sq + Math.pow(n - m, 2);
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}, 0) / (data.length - 1));
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function StandardDeviation (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 turn_off() {
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Bangle.setHRMPower(0);
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var accel = setInterval(function () {
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movement = movement + Bangle.getAccel().diff;
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}, 1000);
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g.clear();
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g.drawString("processing 1/5", 120, 120);
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@ -73,7 +79,7 @@ function turn_off() {
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apply_cutoff();
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find_peaks();
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g.clear();
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g.drawString("processing 5/5", 120, 120);
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@ -111,7 +117,7 @@ function rolling_average(values, count) {
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temp_array = [];
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for (let x = 0; x < count; x++)
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temp_array.push(values[i + x]);
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values[i] = average(temp_array);
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}
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}
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@ -151,6 +157,21 @@ function find_peaks() {
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}
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}
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function RMSSD(data){
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var sum = 0;
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var square = 0;
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for (let i = 0; i < data.length; i++) {
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square = data[i] * data[i];
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Math.round(square);
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sum += square;
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}
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//sum = parseInt(sum);
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var meansquare = sum/data.length;
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var RMS = Math.sqrt(meansquare);
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RMS = parseInt(RMS);
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return RMS;
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}
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function calculate_HRV() {
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var gap_average = average(pulse_array);
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var temp_array = [];
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@ -166,32 +187,40 @@ function calculate_HRV() {
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g.flip();
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g.clear();
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//var display_stdv = StandardDeviation(pulse_array).toFixed(1);
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var HRV = (StandardDeviation(temp_array) * (1 / (sample_frequency * 2) * 1000)).toFixed(0);
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g.drawString("HRV:" + HRV + "\nHR:" + calculatedHR.toFixed(0)
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var SDNN = (StandardDeviation(temp_array) * (1 / (sample_frequency * 2) * 1000)).toFixed(0);
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var RMS_SD = RMSSD(temp_array);
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g.drawString("SDNN:" + SDNN
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+"\nRMSSD:" + RMS_SD
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+ "\nHR:" + calculatedHR.toFixed(0)
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+"\nSample Count:" + temp_array.length, 120, 120);
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if(option == 0){
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Bangle.buzz(500,1);
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clearInterval(routine);
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}
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else{
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var csv = [
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0|getTime(),
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temp_array.length,
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calculatedHR.toFixed(0),
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HRV
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SDNN,
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RMS_SD,
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E.getTemperature(),
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movement.toFixed(5)
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];
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logfile.write(csv.join(",")+"\n");
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for (let i = 0; i < raw_HR_array.length; i++) {
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raw_HR_array[i] = null;
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}
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movement = 0;
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// for (let i = 0; i < raw_HR_array.length; i++) {
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// raw_HR_array[i] = null;
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//}
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}
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}
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function btn1Pressed() {
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if(option === null){
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clearInterval(accel);
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g.clear();
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g.drawString("one-off assessment", 120, 120);
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option = 0;
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@ -201,6 +230,8 @@ function btn1Pressed() {
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function btn3Pressed() {
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if(option === null){
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logfile.write(""); //reset HRV log
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clearInterval(accel);
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g.clear();
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g.drawString("continuous mode", 120, 120);
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option = 1;
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@ -209,13 +240,18 @@ function btn3Pressed() {
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}
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var routine = setInterval(function () {
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clearInterval(accel);
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first_signals = 0; // ignore the first several signals
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pulsecount = 0;
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BPM_array = [];
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heartrate = [];
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pulse_array = [];
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Bangle.setHRMPower(1);
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}, 210000);
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}, 180000);
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var accel = setInterval(function () {
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movement = movement + Bangle.getAccel().diff;
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}, 1000);
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g.clear();
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g.setColor("#00ff7f");
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