Use esptool-js reset methods instead of custom implementation (#663)

* Use esptool-js reset methods instead of custom implementation

- Replace custom hardReset utility with esploader.after() in flash.ts
- Use esptool-js HardReset class in ewt-console.ts for device reset
- Remove src/util/reset.ts (no longer needed)
- Update esptool-js to 0.5.7

This aligns reset behavior with esptool-js and ensures proper
chip-specific reset handling.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* make sure it's a hard reset

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: balloob

package-lock.json

@@ -25,7 +25,7 @@
   },
   "dependencies": {
     "@material/web": "^2.2.0",
-    "esptool-js": "^0.5.6",
+    "esptool-js": "^0.5.7",
     "improv-wifi-serial-sdk": "^2.5.0",
     "lit": "^3.2.1",
     "pako": "^2.1.0",

package.json

@@ -3,6 +3,7 @@ import { sleep } from "../util/sleep";
 import { LineBreakTransformer } from "../util/line-break-transformer";
 import { TimestampTransformer } from "../util/timestamp-transformer";
 import { Logger } from "../const";
+import { Transport, HardReset } from "esptool-js";
 
 export class EwtConsole extends HTMLElement {
   public port!: SerialPort;
@@ -144,17 +145,13 @@ export class EwtConsole extends HTMLElement {
 
   public async reset() {
     this.logger.debug("Triggering reset");
-    await this.port.setSignals({
-      dataTerminalReady: false,
-      requestToSend: true,
-    });
-    await sleep(250);
-    await this.port.setSignals({
-      dataTerminalReady: false,
-      requestToSend: false,
-    });
-    await sleep(250);
-    await new Promise((resolve) => setTimeout(resolve, 1000));
+    const transport = new Transport(this.port);
+    // First assert RTS to enter reset state
+    await transport.setRTS(true);
+    await sleep(100);
+    // Use HardReset to release (same as esploader.after())
+    const resetStrategy = new HardReset(transport);
+    await resetStrategy.reset();
   }
 }
 

src/components/ewt-console.ts

@@ -6,7 +6,18 @@ import {
   Manifest,
   FlashStateType,
 } from "./const";
-import { hardReset } from "./util/reset";
+import { sleep } from "./util/sleep";
+
+/**
+ * Perform a hard reset using esploader's chip-specific reset logic.
+ * First asserts RTS to enter reset, then calls esploader.after() which
+ * uses the chip-specific reset procedure to release.
+ */
+const hardResetDevice = async (transport: Transport, esploader: ESPLoader) => {
+  await transport.setRTS(true);
+  await sleep(100);
+  await esploader.after();
+};
 
 export const flash = async (
   onEvent: (state: FlashState) => void,
@@ -55,7 +66,7 @@ export const flash = async (
       details: { error: FlashError.FAILED_INITIALIZING, details: err },
     });
 
-    await hardReset(transport);
+    await hardResetDevice(transport, esploader);
     await transport.disconnect();
     return;
   }
@@ -76,7 +87,7 @@ export const flash = async (
       message: `Your ${chipFamily} board is not supported.`,
       details: { error: FlashError.NOT_SUPPORTED, details: chipFamily },
     });
-    await hardReset(transport);
+    await hardResetDevice(transport, esploader);
     await transport.disconnect();
     return;
   }
@@ -123,7 +134,7 @@ export const flash = async (
           details: err.message,
         },
       });
-      await hardReset(transport);
+      await hardResetDevice(transport, esploader);
       await transport.disconnect();
       return;
     }
@@ -201,7 +212,7 @@ export const flash = async (
       message: err.message,
       details: { error: FlashError.WRITE_FAILED, details: err },
     });
-    await hardReset(transport);
+    await hardResetDevice(transport, esploader);
     await transport.disconnect();
     return;
   }
@@ -216,7 +227,7 @@ export const flash = async (
     },
   });
 
-  await hardReset(transport);
+  await hardResetDevice(transport, esploader);
 
   console.log("DISCONNECT");
   await transport.disconnect();