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var serial = "XX9999"; //<-- Put serial number to pair here | |
var device = ""; | |
//now get advertised packets | |
var dt; | |
function scanForDevices() { | |
NRF.findDevices(function(devs) { | |
devs.forEach(function(dev) { | |
g.clear(); | |
dt = dev.manufacturerData; | |
v = new DataView(new Uint8Array(dt,0,12).buffer); | |
epoch=946684800-28800; //off by 8hrs | |
timestamp = new Date((v.getUint32(2,true)+epoch)*1000); //Date [2-5] | |
age = parseInt(dt[1] /6); //Sample age [1] | |
sens_no = dt[8]; //Sensor count | |
phase = dt[9]; //State? | |
/* Doesn't seem to start at zero on a new sensor after all. | |
if (state == 0) { | |
console.log("Fresh sensor"); | |
} else if (state == 1) { | |
console.log("Linking"); | |
} */ | |
// Running | |
life = 300 * (v.getUint16(6,true)); //Age of sensor | |
span = 15 - life / (60 * 60 * 24); | |
unk = dt[11]; //unknown? | |
glu = dt[10]/10; //gluc mmol | |
mg = glu*18; | |
if (phase == 4) { // countdown phase | |
time = dt[10]; | |
console.log("Warming " + (59 - time) + " mins"); | |
} | |
if (phase == 0xc) { // Stabilising | |
run = "stabilizing"; | |
} | |
console.log(dt); | |
console.log("Date: " + timestamp.toISOString() + | |
" Days: " + parseInt(span) + | |
" Gluc: " + glu + | |
" Age: " + age); | |
g.setFont("6x8:4").drawString(age+" min", 0,50); | |
g.setFont("6x8:4").drawString(glu+" mmol",0,90); | |
g.setFont("6x8:4").drawString(mg+" mg",0,130); | |
}); | |
}, {timeout: 2000, //Check for a couple of seconds | |
filters: [{id: device}]}); | |
} | |
//Encode serial. | |
var ser = new Uint8Array([serial.charCodeAt(0)-55, //uppercase to 10 on | |
serial.charCodeAt(1)-55, | |
serial[2], //Numerals direct | |
serial[3], | |
serial[4], | |
serial[5]]); | |
NRF.setScan(function(d) { | |
if (d.name == 'AiDEX') //Is it a transmitter | |
{ | |
var sens = new Uint8Array(d.manufacturerData, 0, 6); | |
if (sens == ser) // Find serial | |
{ | |
device=d.id; | |
console.log("Device is: "+ device); | |
NRF.setScan(); //stop | |
setInterval(scanForDevices, 60000); | |
scanForDevices(); | |
} | |
} | |
}, { active: true } ); |
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