mirror of
https://github.com/jam422470459/EPD-nRF52-hema213.git
synced 2025-12-13 20:08:14 +08:00
update html
This commit is contained in:
Shuanglei Tao
441
html/js/main.js
441
html/js/main.js
@@ -6,290 +6,319 @@ let reconnectTrys = 0;
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let canvas;
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let startTime;
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let chunkSize = 38;
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const MAX_PACKET_SIZE = 20;
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const EpdCmd = {
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SET_PINS: 0x00,
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INIT: 0x01,
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CLEAR: 0x02,
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SEND_CMD: 0x03,
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SEND_DATA: 0x04,
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DISPLAY: 0x05,
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SLEEP: 0x06,
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SET_CONFIG: 0x90,
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SYS_RESET: 0x91,
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SYS_SLEEP: 0x92,
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CFG_ERASE: 0x99,
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};
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function resetVariables() {
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gattServer = null;
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epdService = null;
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epdCharacteristic = null;
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document.getElementById("log").value = '';
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gattServer = null;
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epdService = null;
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epdCharacteristic = null;
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document.getElementById("log").value = '';
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}
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async function handleError(error) {
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console.log(error);
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resetVariables();
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if (bleDevice == null)
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return;
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if (reconnectTrys <= 5) {
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reconnectTrys++;
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await connect();
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}
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else {
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addLog("连接失败！");
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reconnectTrys = 0;
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}
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console.log(error);
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resetVariables();
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if (bleDevice == null)
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return;
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if (reconnectTrys <= 5) {
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reconnectTrys++;
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await connect();
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}
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else {
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addLog("连接失败！");
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reconnectTrys = 0;
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}
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}
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async function sendCommand(cmd) {
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if (epdCharacteristic) {
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await epdCharacteristic.writeValue(cmd);
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} else {
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addLog("服务不可用，请检查蓝牙连接");
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}
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async function write(cmd, data) {
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if (!epdCharacteristic) {
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addLog("服务不可用，请检查蓝牙连接");
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return;
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}
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let payload = [cmd];
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if (data) {
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if (typeof data == 'string') data = hex2bytes(data);
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if (data instanceof Uint8Array) data = Array.from(data);
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payload.push(...data)
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};
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if (payload.length > MAX_PACKET_SIZE) {
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throw new Error("BLE packet too large!");
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}
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addLog(`<span class="action">⇑</span> ${bytes2hex(payload)}`);
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await epdCharacteristic.writeValue(Uint8Array.from(payload));
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}
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async function sendcmd(cmdTXT) {
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addLog(`<span class="action">⇑</span> ${cmdTXT}`);
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await sendCommand(hexToBytes(cmdTXT));
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async function epdWrite(cmd, data) {
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const chunkSize = MAX_PACKET_SIZE - 1;
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const count = Math.round(data.length / chunkSize);
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let chunkIdx = 0;
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if (typeof data == 'string') data = hex2bytes(data);
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await write(EpdCmd.SEND_CMD, [cmd]);
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for (let i = 0; i < data.length; i += chunkSize) {
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let currentTime = (new Date().getTime() - startTime) / 1000.0;
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setStatus(`命令：0x${cmd.toString(16)}, 数据块: ${chunkIdx+1}/${count+1}, 总用时: ${currentTime}s`);
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await write(EpdCmd.SEND_DATA, data.slice(i, i + chunkSize));
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chunkIdx++;
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}
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}
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async function setDriver() {
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const driver = document.getElementById("epddriver").value;
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const pins = document.getElementById("epdpins").value;
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await sendcmd(`00${pins}`);
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await sendcmd(`01${driver}`);
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await write(EpdCmd.SET_PINS, document.getElementById("epdpins").value);
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await write(EpdCmd.INIT, document.getElementById("epddriver").value);
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}
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async function clearscreen() {
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if(confirm('确认清除屏幕内容?')) {
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await sendcmd("02");
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}
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if(confirm('确认清除屏幕内容?')) {
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await write(EpdCmd.CLEAR);
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}
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}
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async function sendCmWithData(cmd, data){
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const count = Math.round(data.length / chunkSize);
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let chunkIdx = 0;
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await sendcmd(`03${cmd}`);
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for (let i = 0; i < data.length; i += chunkSize) {
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let currentTime = (new Date().getTime() - startTime) / 1000.0;
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let chunk = data.substring(i, i + chunkSize);
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setStatus(`命令：0x${cmd}, 数据块: ${chunkIdx+1}/${count+1}, 总用时: ${currentTime}s`);
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await sendcmd(`04${chunk}`);
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chunkIdx++;
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}
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async function sendcmd() {
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const cmdTXT = document.getElementById('cmdTXT').value;
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if (cmdTXT == '') return;
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const bytes = hex2bytes(cmdTXT);
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await write(bytes[0], bytes.length > 1 ? bytes.slice(1) : null);
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}
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async function send4GrayLut() {
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await sendCmWithData("20", "000A0000000160141400000100140000000100130A010001000000000000000000000000000000000000"); // vcom
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await sendCmWithData("21", "400A0000000190141400000110140A000001A01301000001000000000000000000000000000000000000"); // red not use
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await sendCmWithData("22", "400A0000000190141400000100140A000001990C01030401000000000000000000000000000000000000"); // bw r
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await sendCmWithData("23", "400A0000000190141400000100140A000001990B04040101000000000000000000000000000000000000"); // wb w
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await sendCmWithData("24", "800A0000000190141400000120140A000001501301000001000000000000000000000000000000000000"); // bb b
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await sendCmWithData("25", "400A0000000190141400000110140A000001A01301000001000000000000000000000000000000000000"); // vcom
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await epdWrite(0x20, "000A0000000160141400000100140000000100130A010001000000000000000000000000000000000000"); // vcom
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await epdWrite(0x21, "400A0000000190141400000110140A000001A01301000001000000000000000000000000000000000000"); // red not use
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await epdWrite(0x22, "400A0000000190141400000100140A000001990C01030401000000000000000000000000000000000000"); // bw r
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await epdWrite(0x23, "400A0000000190141400000100140A000001990B04040101000000000000000000000000000000000000"); // wb w
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await epdWrite(0x24, "800A0000000190141400000120140A000001501301000001000000000000000000000000000000000000"); // bb b
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await epdWrite(0x25, "400A0000000190141400000110140A000001A01301000001000000000000000000000000000000000000"); // vcom
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}
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function getImageData(canvas, driver, mode) {
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if (mode === '4gray') {
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return bytesToHex(canvas2gray(canvas));
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} else {
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let data = bytesToHex(canvas2bytes(canvas, 'bw'));
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if (driver === '03') {
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if (mode.startsWith('bwr')) {
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data += bytesToHex(canvas2bytes(canvas, 'red'));
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} else {
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const count = data.length;
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data += 'F'.repeat(count);
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}
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}
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return data;
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}
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if (mode === '4gray') {
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return canvas2gray(canvas);
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} else {
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let data = canvas2bytes(canvas, 'bw');
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if (driver === '03') {
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if (mode.startsWith('bwr')) {
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data.push(...canvas2bytes(canvas, 'red'));
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} else {
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const data1= 'F'.repeat(data.length);
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data.push(...data1);
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}
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}
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return data;
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}
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}
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async function sendimg() {
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startTime = new Date().getTime();
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const canvas = document.getElementById("canvas");
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const driver = document.getElementById("epddriver").value;
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const mode = document.getElementById('dithering').value;
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const imgArray = getImageData(canvas, driver, mode);
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const bwArrLen = (canvas.width/8) * canvas.height * 2;
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startTime = new Date().getTime();
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const canvas = document.getElementById("canvas");
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const driver = document.getElementById("epddriver").value;
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const mode = document.getElementById('dithering').value;
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const imgArray = getImageData(canvas, driver, mode);
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const bwArrLen = canvas.width * canvas.height / 8;
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if (imgArray.length == bwArrLen * 2) {
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await sendCmWithData("10", imgArray.slice(0, bwArrLen - 1));
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await sendCmWithData("13", imgArray.slice(bwArrLen));
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} else {
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await sendCmWithData(driver === "03" ? "10" : "13", imgArray);
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}
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if (imgArray.length == bwArrLen * 2) {
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await epdWrite(0x10, imgArray.slice(0, bwArrLen));
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await epdWrite(0x13, imgArray.slice(bwArrLen));
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} else {
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await epdWrite(driver === "03" ? 0x10 : 0x13, imgArray);
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}
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if (mode === "4gray") {
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await sendcmd("0300");
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await sendcmd("043F"); // Load LUT from register
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await send4GrayLut();
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await sendcmd("05");
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await sendcmd("0300");
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await sendcmd("041F"); // Load LUT from OTP
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} else {
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await sendcmd("05");
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}
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if (mode === "4gray") {
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await epdWrite(0x00, [0x3F]); // Load LUT from register
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await send4GrayLut();
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await write(EpdCmd.DISPLAY);
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await epdWrite(0x00, [0x1F]); // Load LUT from OTP
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} else {
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await write(EpdCmd.DISPLAY);
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}
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const sendTime = (new Date().getTime() - startTime) / 1000.0;
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addLog(`发送完成！耗时: ${sendTime}s`);
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setStatus(`发送完成！耗时: ${sendTime}s`);
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const sendTime = (new Date().getTime() - startTime) / 1000.0;
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addLog(`发送完成！耗时: ${sendTime}s`);
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setStatus(`发送完成！耗时: ${sendTime}s`);
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}
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function updateButtonStatus() {
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const connected = gattServer != null && gattServer.connected;
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const status = connected ? null : 'disabled';
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document.getElementById("reconnectbutton").disabled = (gattServer == null || gattServer.connected) ? 'disabled' : null;
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document.getElementById("sendcmdbutton").disabled = status;
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document.getElementById("clearscreenbutton").disabled = status;
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document.getElementById("sendimgbutton").disabled = status;
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document.getElementById("setDriverbutton").disabled = status;
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const connected = gattServer != null && gattServer.connected;
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const status = connected ? null : 'disabled';
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document.getElementById("reconnectbutton").disabled = (gattServer == null || gattServer.connected) ? 'disabled' : null;
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document.getElementById("sendcmdbutton").disabled = status;
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document.getElementById("clearscreenbutton").disabled = status;
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document.getElementById("sendimgbutton").disabled = status;
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document.getElementById("setDriverbutton").disabled = status;
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}
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function disconnect() {
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updateButtonStatus();
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resetVariables();
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addLog('已断开连接.');
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document.getElementById("connectbutton").innerHTML = '连接';
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updateButtonStatus();
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resetVariables();
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addLog('已断开连接.');
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document.getElementById("connectbutton").innerHTML = '连接';
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}
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async function preConnect() {
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if (gattServer != null && gattServer.connected) {
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if (bleDevice != null && bleDevice.gatt.connected) {
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await sendcmd("06");
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bleDevice.gatt.disconnect();
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}
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}
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else {
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connectTrys = 0;
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try {
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bleDevice = await navigator.bluetooth.requestDevice({
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optionalServices: ['62750001-d828-918d-fb46-b6c11c675aec'],
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acceptAllDevices: true
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});
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} catch (e) {
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if (e.message) addLog(e.message);
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return;
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}
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if (gattServer != null && gattServer.connected) {
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if (bleDevice != null && bleDevice.gatt.connected) {
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await write(EpdCmd.SLEEP);
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bleDevice.gatt.disconnect();
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}
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}
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else {
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connectTrys = 0;
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try {
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bleDevice = await navigator.bluetooth.requestDevice({
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optionalServices: ['62750001-d828-918d-fb46-b6c11c675aec'],
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acceptAllDevices: true
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});
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} catch (e) {
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if (e.message) addLog(e.message);
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return;
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}
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await bleDevice.addEventListener('gattserverdisconnected', disconnect);
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try {
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await connect();
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} catch (e) {
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await handleError(e);
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}
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}
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await bleDevice.addEventListener('gattserverdisconnected', disconnect);
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try {
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await connect();
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} catch (e) {
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await handleError(e);
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}
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}
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}
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async function reConnect() {
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connectTrys = 0;
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if (bleDevice != null && bleDevice.gatt.connected)
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bleDevice.gatt.disconnect();
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resetVariables();
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addLog("正在重连");
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setTimeout(async function () { await connect(); }, 300);
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connectTrys = 0;
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if (bleDevice != null && bleDevice.gatt.connected)
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bleDevice.gatt.disconnect();
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resetVariables();
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addLog("正在重连");
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setTimeout(async function () { await connect(); }, 300);
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}
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async function connect() {
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if (epdCharacteristic == null && bleDevice != null) {
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addLog("正在连接: " + bleDevice.name);
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if (epdCharacteristic == null && bleDevice != null) {
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addLog("正在连接: " + bleDevice.name);
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gattServer = await bleDevice.gatt.connect();
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addLog(' 找到 GATT Server');
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gattServer = await bleDevice.gatt.connect();
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addLog(' 找到 GATT Server');
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epdService = await gattServer.getPrimaryService('62750001-d828-918d-fb46-b6c11c675aec');
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addLog(' 找到 EPD Service');
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epdService = await gattServer.getPrimaryService('62750001-d828-918d-fb46-b6c11c675aec');
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addLog(' 找到 EPD Service');
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epdCharacteristic = await epdService.getCharacteristic('62750002-d828-918d-fb46-b6c11c675aec');
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addLog(' 找到 Characteristic');
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epdCharacteristic = await epdService.getCharacteristic('62750002-d828-918d-fb46-b6c11c675aec');
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addLog(' 找到 Characteristic');
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await epdCharacteristic.startNotifications();
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epdCharacteristic.addEventListener('characteristicvaluechanged', (event) => {
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addLog(`<span class="action">⇓</span> ${bytesToHex(event.target.value.buffer)}`);
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document.getElementById("epdpins").value = bytesToHex(event.target.value.buffer.slice(0, 7));
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document.getElementById("epddriver").value = bytesToHex(event.target.value.buffer.slice(7, 8));
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});
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await epdCharacteristic.startNotifications();
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epdCharacteristic.addEventListener('characteristicvaluechanged', (event) => {
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addLog(`<span class="action">⇓</span> ${bytes2hex(event.target.value.buffer)}`);
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document.getElementById("epdpins").value = bytes2hex(event.target.value.buffer.slice(0, 7));
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document.getElementById("epddriver").value = bytes2hex(event.target.value.buffer.slice(7, 8));
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});
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await sendcmd("01");
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await write(EpdCmd.INIT);
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document.getElementById("connectbutton").innerHTML = '断开';
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updateButtonStatus();
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}
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document.getElementById("connectbutton").innerHTML = '断开';
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updateButtonStatus();
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}
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}
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function setStatus(statusText) {
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document.getElementById("status").innerHTML = statusText;
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document.getElementById("status").innerHTML = statusText;
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}
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function addLog(logTXT) {
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const log = document.getElementById("log");
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const now = new Date();
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const time = String(now.getHours()).padStart(2, '0') + ":" +
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String(now.getMinutes()).padStart(2, '0') + ":" +
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String(now.getSeconds()).padStart(2, '0') + " ";
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log.innerHTML += '<span class="time">' + time + '</span>' + logTXT + '<br>';
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log.scrollTop = log.scrollHeight;
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while ((log.innerHTML.match(/<br>/g) || []).length > 20) {
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var logs_br_position = log.innerHTML.search("<br>");
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log.innerHTML = log.innerHTML.substring(logs_br_position + 4);
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log.scrollTop = log.scrollHeight;
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}
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const log = document.getElementById("log");
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const now = new Date();
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const time = String(now.getHours()).padStart(2, '0') + ":" +
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String(now.getMinutes()).padStart(2, '0') + ":" +
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String(now.getSeconds()).padStart(2, '0') + " ";
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log.innerHTML += '<span class="time">' + time + '</span>' + logTXT + '<br>';
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log.scrollTop = log.scrollHeight;
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while ((log.innerHTML.match(/<br>/g) || []).length > 20) {
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var logs_br_position = log.innerHTML.search("<br>");
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log.innerHTML = log.innerHTML.substring(logs_br_position + 4);
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log.scrollTop = log.scrollHeight;
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}
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}
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function hexToBytes(hex) {
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for (var bytes = [], c = 0; c < hex.length; c += 2)
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bytes.push(parseInt(hex.substr(c, 2), 16));
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return new Uint8Array(bytes);
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function clearLog() {
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document.getElementById("log").innerHTML = '';
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}
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function bytesToHex(data) {
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return new Uint8Array(data).reduce(
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function (memo, i) {
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return memo + ("0" + i.toString(16)).slice(-2);
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}, "");
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function hex2bytes(hex) {
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for (var bytes = [], c = 0; c < hex.length; c += 2)
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bytes.push(parseInt(hex.substr(c, 2), 16));
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return new Uint8Array(bytes);
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}
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||||
|
||||
function bytes2hex(data) {
|
||||
return new Uint8Array(data).reduce(
|
||||
function (memo, i) {
|
||||
return memo + ("0" + i.toString(16)).slice(-2);
|
||||
}, "");
|
||||
}
|
||||
|
||||
function intToHex(intIn) {
|
||||
let stringOut = ("0000" + intIn.toString(16)).substr(-4)
|
||||
return stringOut.substring(2, 4) + stringOut.substring(0, 2);
|
||||
let stringOut = ("0000" + intIn.toString(16)).substr(-4)
|
||||
return stringOut.substring(2, 4) + stringOut.substring(0, 2);
|
||||
}
|
||||
|
||||
async function update_image () {
|
||||
const canvas = document.getElementById("canvas");
|
||||
const ctx = canvas.getContext("2d");
|
||||
const canvas = document.getElementById("canvas");
|
||||
const ctx = canvas.getContext("2d");
|
||||
|
||||
let image = new Image();;
|
||||
const image_file = document.getElementById('image_file');
|
||||
if (image_file.files.length > 0) {
|
||||
const file = image_file.files[0];
|
||||
image.src = URL.createObjectURL(file);
|
||||
} else {
|
||||
image.src = document.getElementById('demo-img').src;
|
||||
}
|
||||
let image = new Image();;
|
||||
const image_file = document.getElementById('image_file');
|
||||
if (image_file.files.length > 0) {
|
||||
const file = image_file.files[0];
|
||||
image.src = URL.createObjectURL(file);
|
||||
} else {
|
||||
image.src = document.getElementById('demo-img').src;
|
||||
}
|
||||
|
||||
image.onload = function(event) {
|
||||
URL.revokeObjectURL(this.src);
|
||||
ctx.drawImage(image, 0, 0, image.width, image.height, 0, 0, canvas.width, canvas.height);
|
||||
convert_dithering()
|
||||
}
|
||||
image.onload = function(event) {
|
||||
URL.revokeObjectURL(this.src);
|
||||
ctx.drawImage(image, 0, 0, image.width, image.height, 0, 0, canvas.width, canvas.height);
|
||||
convert_dithering()
|
||||
}
|
||||
}
|
||||
|
||||
function clear_canvas() {
|
||||
if(confirm('确认清除画布内容?')) {
|
||||
const ctx = canvas.getContext("2d");
|
||||
ctx.fillStyle = 'white';
|
||||
ctx.fillRect(0, 0, canvas.width, canvas.height);
|
||||
}
|
||||
if(confirm('确认清除画布内容?')) {
|
||||
const ctx = canvas.getContext("2d");
|
||||
ctx.fillStyle = 'white';
|
||||
ctx.fillRect(0, 0, canvas.width, canvas.height);
|
||||
}
|
||||
}
|
||||
|
||||
function convert_dithering() {
|
||||
const ctx = canvas.getContext("2d");
|
||||
const mode = document.getElementById('dithering').value;
|
||||
if (mode.startsWith('bwr')) {
|
||||
ditheringCanvasByPalette(canvas, bwrPalette, mode);
|
||||
} else if (mode === '4gray') {
|
||||
dithering(ctx, canvas.width, canvas.height, 4, "gray");
|
||||
} else {
|
||||
dithering(ctx, canvas.width, canvas.height, parseInt(document.getElementById('threshold').value), mode);
|
||||
}
|
||||
const ctx = canvas.getContext("2d");
|
||||
const mode = document.getElementById('dithering').value;
|
||||
if (mode.startsWith('bwr')) {
|
||||
ditheringCanvasByPalette(canvas, bwrPalette, mode);
|
||||
} else if (mode === '4gray') {
|
||||
dithering(ctx, canvas.width, canvas.height, 4, "gray");
|
||||
} else {
|
||||
dithering(ctx, canvas.width, canvas.height, parseInt(document.getElementById('threshold').value), mode);
|
||||
}
|
||||
}
|
||||
|
||||
document.body.onload = () => {
|
||||
canvas = document.getElementById('canvas');
|
||||
canvas = document.getElementById('canvas');
|
||||
|
||||
updateButtonStatus();
|
||||
update_image();
|
||||
updateButtonStatus();
|
||||
update_image();
|
||||
|
||||
document.getElementById('dithering').value = 'none';
|
||||
document.getElementById('dithering').value = 'none';
|
||||
}
|
||||
Reference in New Issue
Block a user