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Nordic's DFU OTA protocol sends data in little endian format. Whether the web bluetooth platform is little endian or not doesn't matter.

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This commit is contained in:
Michael Dietz
2016-02-17 14:38:58 +01:00
parent ccd602838c
commit 8c10f0010a
1 changed files with 8 additions and 12 deletions
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20
dist/dfu.js vendored
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@@ -44,6 +44,8 @@
}(this, function(Promise, bluetooth) { }(this, function(Promise, bluetooth) {
"use strict"; "use strict";
var LITTLE_ENDIAN = true;
var packetSize = 20; var packetSize = 20;
var notifySteps = 40; var notifySteps = 40;
@@ -60,12 +62,6 @@
Application: 4 Application: 4
}; };
var littleEndian = (function() {
var buffer = new ArrayBuffer(2);
new DataView(buffer).setInt16(0, 256, true);
return new Int16Array(buffer)[0] === 256;
})();
var loggers = []; var loggers = [];
function addLogger(loggerFn) { function addLogger(loggerFn) {
if (typeof loggerFn === "function") { if (typeof loggerFn === "function") {
@@ -269,9 +265,9 @@
var buffer = new ArrayBuffer(12); var buffer = new ArrayBuffer(12);
var view = new DataView(buffer); var view = new DataView(buffer);
view.setUint32(0, softLength, littleEndian); view.setUint32(0, softLength, LITTLE_ENDIAN);
view.setUint32(4, bootLength, littleEndian); view.setUint32(4, bootLength, LITTLE_ENDIAN);
view.setUint32(8, appLength, littleEndian); view.setUint32(8, appLength, LITTLE_ENDIAN);
// Set firmware length // Set firmware length
return packetChar.writeValue(view); return packetChar.writeValue(view);
@@ -321,7 +317,7 @@
var buffer = new ArrayBuffer(3); var buffer = new ArrayBuffer(3);
view = new DataView(buffer); view = new DataView(buffer);
view.setUint8(0, 8); view.setUint8(0, 8);
view.setUint16(1, interval, littleEndian); view.setUint16(1, interval, LITTLE_ENDIAN);
controlChar.writeValue(view) controlChar.writeValue(view)
.then(() => { .then(() => {
@@ -349,7 +345,7 @@
}); });
} else if (req_opcode === 7) { } else if (req_opcode === 7) {
var byteCount = view.getUint32(3, littleEndian); var byteCount = view.getUint32(3, LITTLE_ENDIAN);
log('length: ' + byteCount); log('length: ' + byteCount);
log('complete, validate...'); log('complete, validate...');
@@ -384,7 +380,7 @@
} }
} else if (opCode === 17) { } else if (opCode === 17) {
var bytes = view.getUint32(1, littleEndian); var bytes = view.getUint32(1, LITTLE_ENDIAN);
log('transferred: ' + bytes); log('transferred: ' + bytes);
writePacket(packetChar, arrayBuffer, 0); writePacket(packetChar, arrayBuffer, 0);
} }