402 lines
16 KiB
JavaScript
402 lines
16 KiB
JavaScript
"use strict";
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var p7 = {
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device: {},
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make: {},
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send: {},
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receive: {},
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decode: {},
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commands: {},
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receiveBuffer : new Uint8Array(1032 + 1)
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};
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(function() {
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/* ---------------------Utilitaries--------------------- */
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/* Sum individual bytes
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* NOT + 1, as defined in fxReverse documentation.
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* Be sure it's under 256! */
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Array.prototype.p7Checksum = Uint8Array.prototype.p7Checksum = function () {
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return (((~(this.reduce((accumulator, currentValue) => accumulator + currentValue))) + 1) & 0xFF)
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}
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/* Convert a string into an array of ascii numbers */
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String.prototype.toAscii = function () {
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return this.split('').map((char) => char.charCodeAt(0))
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}
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/* Convert an hex number into an array of ascii values
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* Use the uppercase representation of the number */
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Number.prototype.hexToAscii = function (padding) {
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return this.toString(16).toUpperCase().padStart(padding, 0).toAscii();
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}
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/* Convert an ascii array into a string */
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Array.prototype.asciiToString = Uint8Array.prototype.asciiToString = function () {
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let string = [];
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this.forEach((element) => string.push(String.fromCharCode(element)));
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return string.join('');
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}
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/* Convert an ascii array representing an hex number into a number */
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Array.prototype.asciiToHex = Uint8Array.prototype.asciiToHex = function () {
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return Number('0x' + this.asciiToString());
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}
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/* ---------------------Packet making--------------------- */
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//Add the checksum to a packet
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p7.make.checksum = (packet) => packet.concat(packet.slice(1, packet.length).p7Checksum().hexToAscii(2));
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/* Create a basic (Non-Extended) packet */
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/* Return the packet */
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p7.make.basicPacket = (type, subtype) => p7.make.checksum([type, //Type (T)
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...subtype.hexToAscii(2), //Subtype (ST)
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0x30]); //Extended (EX)
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/* Create an extended command packet */
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/* Return the packet */
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p7.make.extendedCommandPacket = (subtype, datatype, fileSize, commandArguments) => {
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let data = [0x30, 0x30, //Overwrite (OW)
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...[0x30, 0x30], //Data type (DT) ??
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...fileSize.hexToAscii(8), //File size (FS)
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...commandArguments.flatMap((element) => element.length.hexToAscii(2)), //Size of Data {1..6} (SD{1..6})
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...commandArguments.join('').toAscii()]; //Data {1..6} (D{1..6})
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return p7.make.checksum([0x01, //Type (T)
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...subtype.hexToAscii(2), //Subtype (ST)
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0x31, //Extended (EX)
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...data.length.hexToAscii(4), //Data size (DS)
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...data]); //Data (D)
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}
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/* Create a data packet */
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/* Return the packet */
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p7.make.dataPacket = (subtype, totalNumber, currentNumber, data) =>
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p7.make.checksum([0x02, //Type field
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...subtype.hexToAscii(2), //Subtype (ST) field
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0x31, //Extended (EX) field
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...(data.length + 8).hexToAscii(4), //Data size (DS) field
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...totalNumber.hexToAscii(4), //Total number (TN) subfield
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...currentNumber.hexToAscii(4), //Current number (CN) subfield
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...data]); //Data (DD) subfield
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/* ---------------------Packet decoding--------------------- */
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/* Return all the informations of the device, and trim string's overage (255) */
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p7.decode.extendedAckPacket = () => {
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return {
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hardwareIdentifier : p7.receiveBuffer.slice(8, 16).asciiToString(),
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processorIdentifier : p7.receiveBuffer.slice(16, 32).asciiToString(),
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preprogrammedROMCapacity : p7.receiveBuffer.slice(32, 40).asciiToString(),
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flashROMCapacity : p7.receiveBuffer.slice(40, 48).asciiToString(),
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ramCapacity : p7.receiveBuffer.slice(48, 56).asciiToString(),
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prepogrammedROMVersion : p7.receiveBuffer.slice(56, 72).filter(number => number !== 255).asciiToString(),
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bootCodeVersion : p7.receiveBuffer.slice(72, 88).filter(number => number !== 255).asciiToString(),
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bootCodeOffset : p7.receiveBuffer.slice(88, 96).filter(number => number !== 255).asciiToString(),
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bootCodeSize : p7.receiveBuffer.slice(96, 104).filter(number => number !== 255).asciiToString(),
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osCodeVersion : p7.receiveBuffer.slice(104, 120).filter(number => number !== 255).asciiToString(),
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osCodeOffset : p7.receiveBuffer.slice(120, 128).asciiToString(),
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osCodeSize : p7.receiveBuffer.slice(128, 136).asciiToString(),
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protocolVersion : p7.receiveBuffer.slice(136, 140).asciiToString(),
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productID : p7.receiveBuffer.slice(140, 156).filter(number => number !== 255).asciiToString(),
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username : p7.receiveBuffer.slice(156, 172).filter(number => number !== 255).asciiToString()
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}
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};
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/* Return the value (as an number) of the Overwrite (OW) subfield of the Data (D) field of an extended command packet */
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p7.decode.commandPacketOverWrite = () => p7.receiveBuffer.slice(8, 10).asciiToHex();
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/* Return the value (as an number) of the Data type (DT) subfield of the Data (D) field of an extended command packet */
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p7.decode.commandPacketDataType = () => p7.receiveBuffer.slice(10, 12).asciiToHex();
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/* Return the value (as an number) of the FileSize (FS) subfield of the Data (D) field of an extended command packet */
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p7.decode.commandPacketFileSize = () => p7.receiveBuffer.slice(12, 20).asciiToHex();
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/* Return the value (as a string) of the requested Data (D) subfield of the Data (D) field of an extended command packet */
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p7.decode.commandPacketDataField = function (field) {
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let fieldSize = [];
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/* Decode the length of Data {1 - ${length}} (D{1 - ${length}}) subfields */
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for (let index = 20, i = 0; i < field ; i++)
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fieldSize.push(p7.receiveBuffer.slice(index, (index += 2)).asciiToHex());
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/* Get the requested field size */
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let fieldLength = fieldSize.pop();
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/* Get the index of the requested field */
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let fieldIndex = (fieldSize.length) ? fieldSize.reduce((accumulator, currentValue) => accumulator + currentValue) + 32 : 32;
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/* Return the ascii array as a string */
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return p7.receiveBuffer.slice(fieldIndex, fieldIndex + fieldLength).asciiToString();
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}
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p7.decode.commandPacketAllDataFields = function () {
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let dataFieldSize = [];
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let index = 20
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while(index < 32)
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dataFieldSize.push(p7.receiveBuffer.subarray(index, (index += 2)).asciiToHex());
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return dataFieldSize.map((element) => p7.receiveBuffer.slice(index, (index += element)).asciiToString());
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}
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/* ---------------------Packet receiving--------------------- */
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p7.receive.packet = function () {
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console.log("%cReceiving...", "color: orange");
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var packetInfo = {};
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var transfered = 0; //Already transfered bytes
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return p7.device.transferIn(2, 64)
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.then(function receive(transferInResult) {
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if (!transferInResult.data.byteLength)
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return p7.device.transferIn(2, 64).then(receive);
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p7.receiveBuffer.set(new Uint8Array(transferInResult.data.buffer), 0);
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packetInfo.length = 6; //Type (T), Subtype (S), Extended (EX) and Checksum (CS) fields
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//Set Type (T) field
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packetInfo.type = p7.receiveBuffer[0];
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//Set Subtype (ST) field
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packetInfo.subtype = p7.receiveBuffer.slice(1, 2).asciiToHex();
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//Set Extended (EX) field
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if ((packetInfo.extended = (p7.receiveBuffer[3] === 0x31))) {
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//Set Data size (DS) field
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packetInfo.dataSize = p7.receiveBuffer.slice(4, 8).asciiToHex();
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packetInfo.length += packetInfo.dataSize + 4; //Data size field
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if ((transfered += 64) < packetInfo.length)
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return p7.device.transferIn(2, 64)
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.then(function receiveRemainingPackets(transferInResult) {
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p7.receiveBuffer.set(new Uint8Array(transferInResult.data.buffer), transfered);
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if ((transfered += 64) < packetInfo.length)
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return p7.device.transferIn(2, 64).then(receiveRemainingPackets);
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});
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}
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}).then(() => {
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//Compute checksum
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let checksumError = ((packetInfo.checksum = p7.receiveBuffer.slice(packetInfo.length - 2, packetInfo.length).asciiToHex()) !== p7.receiveBuffer.slice(1, packetInfo.length - 2).p7Checksum());
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/* TODO: handle checksum errors */
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console.log(checksumError);
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return packetInfo;
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}).catch((err) => {
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err.message = "Couldn't receive the " + transfered + " to " + (transfered + 64) + " bytes of the packet: " + err.message;
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throw err;
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});
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}
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/* ---------------------Packet sending--------------------- */
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p7.send.packet = function (buffer) {
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console.log("%cSending packet...", "color: green");
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return p7.device.transferOut(1, Uint8Array.from(buffer))
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.catch((err) => {
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err.message = "Couldn't send the packet: " + err.message;
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throw err;
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})
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.then(() => p7.receive.packet())
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.catch((err) => {
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err.message = "Couldn't receive the response packet: " + err.message;
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throw err;
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});
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}
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/* Send a single command
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* Return the informations about the response ack packet */
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p7.send.singleCommand = (subtype, datatype, fileSize, commandArguments) =>
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p7.send.packet(p7.make.extendedCommandPacket(subtype, datatype, fileSize, commandArguments))
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.then((responsePacketInfo) => {
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//Check if the packet is an ack packet
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if (!(responsePacketInfo.type === p7PacketType.ack && responsePacketInfo.subtype === ackSubtype.default))
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throw new Error("The calculator didn't send the expected ack packet!");
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});
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/* Send a single command request
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* Return an array containing the filtered (with `callbackFunction`) Data (D) field of each response command packet */
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p7.send.singleCommandRoleswap = function (subtype, datatype, fileSize, commandArguments, callbackFunction) {
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var filteredData = [];
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return p7.send.singleCommand(subtype, datatype, fileSize, commandArguments)
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.then((responsePacketInfo) => p7.send.packet(p7.make.basicPacket(p7PacketType.roleswap, roleswapSubtype.default)))
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.then(function receiveRequestedCommand(responsePacketInfo) {
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if (responsePacketInfo.type !== p7PacketType.command)
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return filteredData;
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filteredData.push(callbackFunction());
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return p7.send.packet(p7.make.basicPacket(p7PacketType.ack, ackSubtype.default)).then(receiveRequestedCommand);
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});
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}
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/* ---------------------Initialization and exiting--------------------- */
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/* Connect to the calculator */
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p7.connect = () =>
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navigator.usb.requestDevice({filters:[
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{'vendorId': 0x07cf , 'productId': 0x6101}, //fx-9750gII
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{'vendorId': 0x07cf , 'productId': 0x6102}] //fx-CP400
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}).then((device) => {
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p7.device = device
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return p7.device.open();
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}).then(() => {
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if (p7.device.configuration === null)
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return p7.device.selectConfiguration(1); //Only existing one so it should be selected by default, just checking
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}).then(() => {
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if (p7.device.configuration.interfaces[0].claimed === false)
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return p7.device.claimInterface(0); //Same as for the configuration
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});
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/* Receive and send some usb control message, as defined in fxReverse documentation
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*
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* Adapted version (some parameters changed since fxReverse's writing) of usb_control_msg() function's protoype
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* from linux-manual : https://manpages.debian.org/jessie-backports/linux-manual-4.8/usb_control_msg.9.en.html
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*
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* int usb_control_msg(struct usb_device * dev,
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* uint8_t requesttype,
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* uint8_t request,
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* uint16_t value,
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* uint16_t index,
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* void * data,
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* uint16_t size,
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* int timeout);
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*
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* fxReverse2:13:
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*
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* int init_connection() {
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* char *buffer = calloc(0x29, sizeof(char));
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*
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* //Receive 0x12 bytes of data
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* usb_control_message(usb_handle,
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* 0x80, = 0b10000000
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* - D7 = 1 -> Data transfer direction: Device-to-host
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* - D6...D5 = 0 -> Type: Standard
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* - D4...D0 = 0 -> Recipient: Device
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* 0x6,
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* 0x0100,
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* 0x0,
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* buffer,
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* 0x12,
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* 200);
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*
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* //Same arguments (except timeout), but value is 0x200 and it receives 0x29 bytes of data
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* usb_control_message(usb_handle, 0x80, 0x6, 0x200, 0, buffer, 0x29, 250);
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*
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*
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* usb_control_message(usb_handle,
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* 0x41, = 0b01000001
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* - D7 = 0 -> Data transfer direction: Host-to-device
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* - D6...D5 = 2 -> Type: Vendor
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* - D4...D0 = 1 -> Interface: Interface
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* 0x1,
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* 0x0,
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* 0,
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* buffer,
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* 0x0,
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* 250);
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*
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* free(buffer);
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* return 0;
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* }
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****************************************************************
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let transferInResult = undefined;
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let controlData = undefined;
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try {
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transferInResult = await p7.device.controlTransferIn({
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requestType: 'standard',
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recipient: 'device',
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request: 0x06, // GET_DESCRIPTOR
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value: 0x0100, // Descriptor Type and Descriptor Index
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index: 0x0000
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}, 0x12); // Length
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} catch (err) {
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console.log(err);
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}
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controlData = new Uint8Array(transferInResult.data.buffer);
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console.log('vendor id : 0x' + controlData[9].toString(16).padStart(2, 0) + controlData[8].toString(16).padStart(2,0));
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console.log('product id : 0x' + controlData[11].toString(16).padStart(2, 0) + controlData[10].toString(16).padStart(2,0));
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try {
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transferInResult = await p7.device.controlTransferIn({
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requestType: 'standard',
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recipient: 'device',
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request: 0x06, // GET_DESCRIPTOR
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value: 0x0200, // Descriptor Type and Descriptor Index
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index: 0x0000
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}, 0x29); // Length
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} catch (err) {
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console.log(err);
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}
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controlData = new Uint8Array(transferInResult.data.buffer);
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console.log(controlData);
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try {
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await p7.device.controlTransferOut({
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requestType: 'vendor',
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recipient: 'interface',
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request: 0x01,
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value: 0x0000,
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index: 0x0000
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}, controlData);
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} catch (err) {
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console.log(err);
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} */
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/* Initialize the connection with the calculator */
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p7.init = () =>
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p7.connect()
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.catch(() => {
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throw new Error("Couldn't connect to the calculator!");
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}).then(() => p7.send.packet(p7.make.basicPacket(p7PacketType.check, checkSubtype.initialization))
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.catch(() => {
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throw new Error("Couldn't send the initialisation packet!");
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}).then(() => p7.send.packet(p7.make.basicPacket(p7PacketType.command, sysCommandSubtype.getDeviceInfo))
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.catch(() => {
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throw new Error("Couldn't ask for the device infos!");
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}).then(() => p7.decode.extendedAckPacket())));
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/* End the connexion with the calculator */
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p7.exit = async function () {
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}
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document.getElementById('connect').addEventListener('click',
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async function () {
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var time = performance.now();
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return p7.init()
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.catch((err) => {
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console.error(err);
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return err;
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}).then((deviceInfo) => {
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console.log(deviceInfo);
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//Main commands
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p7.commands.list('fls0')
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.then((fileList) => console.log('The following files are in the flash memory: %o', fileList))
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.then(() => p7.commands.getCapacity('fls0'))
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.then((capacity) => console.log('Flash memory free space: ' + capacity + 'o'))
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.then(() => console.log('Done. (in ' + Math.round(performance.now() - time) + 'ms)'));
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})
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});
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})();
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