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ggwave : various improvements

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- faster FFT implementation
- built-in Direct Sequence Spread option
- remove <map> dependency from implementation
- update arduino-rx example
This commit is contained in:
Georgi Gerganov
2022-06-04 15:41:23 +03:00
parent f4020f63f9
commit f5e08d921b
16 changed files with 959 additions and 254 deletions
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14
examples/buttons/index-tmpl.html
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@@ -54,13 +54,6 @@
const kPayloadLength = 3;
var kDSSMagic = [
0x96, 0x9f, 0xb4, 0xaf, 0x1b, 0x91, 0xde, 0xc5, 0x45, 0x75, 0xe8, 0x2e, 0x0f, 0x32, 0x4a, 0x5f,
0xb4, 0x56, 0x95, 0xcb, 0x7f, 0x6a, 0x54, 0x6a, 0x48, 0xf2, 0x0b, 0x7b, 0xcd, 0xfb, 0x93, 0x6d,
0x3c, 0x77, 0x5e, 0xc3, 0x33, 0x47, 0xc0, 0xf1, 0x71, 0x32, 0x33, 0x27, 0x35, 0x68, 0x47, 0x1f,
0x4e, 0xac, 0x23, 0x42, 0x5f, 0x00, 0x37, 0xa4, 0x50, 0x6d, 0x48, 0x24, 0x91, 0x7c, 0xa1, 0x4e,
];
// instantiate the ggwave instance
// ggwave_factory comes from the ggwave.js module
ggwave_factory().then(function(obj) {
@@ -93,12 +86,14 @@
parameters.payloadLength = kPayloadLength;
parameters.sampleRateInp = context.sampleRate;
parameters.sampleRateOut = context.sampleRate;
parameters.operatingMode = GGWAVE_OPERATING_MODE_RX_AND_TX | GGWAVE_OPERATING_MODE_USE_DSS;
instance = ggwave.init(parameters);
parameters = ggwave_FluentPet.getDefaultParameters();
parameters.payloadLength = kPayloadLength;
parameters.sampleRateInp = context.sampleRate;
parameters.sampleRateOut = context.sampleRate - 512;
parameters.operatingMode = GGWAVE_OPERATING_MODE_RX_AND_TX | GGWAVE_OPERATING_MODE_USE_DSS;
instance = ggwave_FluentPet.init(parameters);
}
}
@@ -110,10 +105,9 @@
function onSend(text) {
init();
// DSS : xor the text with the magic numbers
var payload = new Uint8Array(text.length);
for (var i = 0; i < text.length; i++) {
payload[i] = text.charCodeAt(i) ^ kDSSMagic[i];
payload[i] = text.charCodeAt(i);
}
// generate audio waveform
@@ -177,7 +171,7 @@
var payload = "";
res8 = convertTypedArray(res, Uint8Array);
for (var i = 0; i < 3; i++) {
payload += String.fromCharCode(res8[i] ^ kDSSMagic[i]);
payload += String.fromCharCode(res8[i]);
}
if (payload == 'RRR' || payload == 'GGG' || payload == 'BBB') {