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flash.ts
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flash.ts
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import { Transport, ESPLoader } from "esptool-js";
import {
Build,
FlashError,
FlashState,
Manifest,
FlashStateType,
} from "./const";
import { sleep } from "./util/sleep";
const resetTransport = async (transport: Transport) => {
await transport.device.setSignals({
dataTerminalReady: false,
requestToSend: true,
});
await sleep(250);
await transport.device.setSignals({
dataTerminalReady: false,
requestToSend: false,
});
await sleep(250);
};
export const flash = async (
onEvent: (state: FlashState) => void,
port: SerialPort,
manifestPath: string,
manifest: Manifest,
eraseFirst: boolean,
) => {
let build: Build | undefined;
let chipFamily: Build["chipFamily"];
const fireStateEvent = (stateUpdate: FlashState) =>
onEvent({
...stateUpdate,
manifest,
build,
chipFamily,
});
const transport = new Transport(port);
const esploader = new ESPLoader({
transport,
baudrate: 115200,
romBaudrate: 115200,
enableTracing: false,
});
// For debugging
(window as any).esploader = esploader;
fireStateEvent({
state: FlashStateType.INITIALIZING,
message: "Initializing...",
details: { done: false },
});
try {
await esploader.main();
await esploader.flashId();
} catch (err: any) {
console.error(err);
fireStateEvent({
state: FlashStateType.ERROR,
message:
"Failed to initialize. Try resetting your device or holding the BOOT button while clicking INSTALL.",
details: { error: FlashError.FAILED_INITIALIZING, details: err },
});
await resetTransport(transport);
await transport.disconnect();
return;
}
chipFamily = esploader.chip.CHIP_NAME as any;
if (!esploader.chip.ROM_TEXT) {
fireStateEvent({
state: FlashStateType.ERROR,
message: `Chip ${chipFamily} is not supported`,
details: {
error: FlashError.NOT_SUPPORTED,
details: `Chip ${chipFamily} is not supported`,
},
});
await resetTransport(transport);
await transport.disconnect();
return;
}
fireStateEvent({
state: FlashStateType.INITIALIZING,
message: `Initialized. Found ${chipFamily}`,
details: { done: true },
});
build = manifest.builds.find((b) => b.chipFamily === chipFamily);
if (!build) {
fireStateEvent({
state: FlashStateType.ERROR,
message: `Your ${chipFamily} board is not supported.`,
details: { error: FlashError.NOT_SUPPORTED, details: chipFamily },
});
await resetTransport(transport);
await transport.disconnect();
return;
}
fireStateEvent({
state: FlashStateType.PREPARING,
message: "Preparing installation...",
details: { done: false },
});
const manifestURL = new URL(manifestPath, location.toString()).toString();
const filePromises = build.parts.map(async (part) => {
const url = new URL(part.path, manifestURL).toString();
const resp = await fetch(url);
if (!resp.ok) {
throw new Error(
`Downlading firmware ${part.path} failed: ${resp.status}`,
);
}
const reader = new FileReader();
const blob = await resp.blob();
return new Promise<string>((resolve) => {
reader.addEventListener("load", () => resolve(reader.result as string));
reader.readAsBinaryString(blob);
});
});
const fileArray: Array<{ data: string; address: number }> = [];
let totalSize = 0;
for (let part = 0; part < filePromises.length; part++) {
try {
const data = await filePromises[part];
fileArray.push({ data, address: build.parts[part].offset });
totalSize += data.length;
} catch (err: any) {
fireStateEvent({
state: FlashStateType.ERROR,
message: err.message,
details: {
error: FlashError.FAILED_FIRMWARE_DOWNLOAD,
details: err.message,
},
});
await resetTransport(transport);
await transport.disconnect();
return;
}
}
fireStateEvent({
state: FlashStateType.PREPARING,
message: "Installation prepared",
details: { done: true },
});
if (eraseFirst) {
fireStateEvent({
state: FlashStateType.ERASING,
message: "Erasing device...",
details: { done: false },
});
await esploader.eraseFlash();
fireStateEvent({
state: FlashStateType.ERASING,
message: "Device erased",
details: { done: true },
});
}
fireStateEvent({
state: FlashStateType.WRITING,
message: `Writing progress: 0%`,
details: {
bytesTotal: totalSize,
bytesWritten: 0,
percentage: 0,
},
});
let totalWritten = 0;
try {
await esploader.writeFlash({
fileArray,
flashSize: "keep",
flashMode: "keep",
flashFreq: "keep",
eraseAll: false,
compress: true,
// report progress
reportProgress: (fileIndex: number, written: number, total: number) => {
const uncompressedWritten =
(written / total) * fileArray[fileIndex].data.length;
const newPct = Math.floor(
((totalWritten + uncompressedWritten) / totalSize) * 100,
);
// we're done with this file
if (written === total) {
totalWritten += uncompressedWritten;
return;
}
fireStateEvent({
state: FlashStateType.WRITING,
message: `Writing progress: ${newPct}%`,
details: {
bytesTotal: totalSize,
bytesWritten: totalWritten + written,
percentage: newPct,
},
});
},
});
} catch (err: any) {
fireStateEvent({
state: FlashStateType.ERROR,
message: err.message,
details: { error: FlashError.WRITE_FAILED, details: err },
});
await resetTransport(transport);
await transport.disconnect();
return;
}
fireStateEvent({
state: FlashStateType.WRITING,
message: "Writing complete",
details: {
bytesTotal: totalSize,
bytesWritten: totalWritten,
percentage: 100,
},
});
await sleep(100);
console.log("HARD RESET");
await resetTransport(transport);
console.log("DISCONNECT");
await transport.disconnect();
fireStateEvent({
state: FlashStateType.FINISHED,
message: "All done!",
});
};