42 lines
1.4 KiB
JavaScript
Executable File
42 lines
1.4 KiB
JavaScript
Executable File
#!/usr/bin/env node
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let fs = require('fs');
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let uhk = require('./uhk');
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const chunkSize = 63;
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let isHardwareConfig = process.argv[2] === 'h';
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let configTypeString = isHardwareConfig ? 'hardware' : 'user';
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let isFirstSend = true;
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let isFirstReceive = true;
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let configSize;
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let offset = 0;
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let configBuffer;
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let chunkSizeToRead;
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uhk.sendUsbPacketsByCallback(() => {
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if (isFirstSend) {
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isFirstSend = false;
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return new Buffer([uhk.usbCommands.getProperty, isHardwareConfig ? uhk.systemPropertyIds.hardwareConfigSize : uhk.systemPropertyIds.userConfigSize]);
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} else {
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chunkSizeToRead = Math.min(chunkSize, configSize - offset)
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let buffer = Buffer([uhk.usbCommands.readUserConfig, chunkSizeToRead, offset & 0xff, offset >> 8]);
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let bufferOrNull = offset >= configSize ? null : buffer;
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if (!bufferOrNull) {
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fs.writeFileSync(`${configTypeString}-config.out`, configBuffer, 'binary');
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}
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offset += chunkSizeToRead;
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return bufferOrNull;
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}
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});
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uhk.registerReceiveCallback((buffer) => {
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if (isFirstReceive) {
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isFirstReceive = false;
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configSize = buffer[1] + (buffer[2]<<8);
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console.log(`${configTypeString}configSize:`, configSize);
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configBuffer = new Buffer(0);
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} else {
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configBuffer = Buffer.concat([configBuffer, new Buffer(buffer.slice(1, chunkSizeToRead+1))]);
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}
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});
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