config.json, img: added new devices

js+html: added url navigation, "notice" support

lib/dfu.js

@@ -80,30 +80,7 @@ function calcCrc16(data, crc = 0xFFFF) {
 }
 
 function sleep(milliseconds) {
-  return new Promise((resolve) => {
-    const startTime = performance.now();
-    const targetTime = startTime + milliseconds;
-
-    function checkTime() {
-      if (performance.now() >= targetTime) {
-        resolve();
-      } else {
-        requestAnimationFrame(checkTime);
-      }
-    }
-
-    const initialDelay = Math.max(0, milliseconds - 16); // Wake up ~1 frame early to start polling
-
-    if (initialDelay > 0) {
-      setTimeout(() => {
-        // Now start the more precise polling
-        checkTime();
-      }, initialDelay);
-    } else {
-      // If the desired sleep is very short, go straight to polling
-      checkTime();
-    }
-  });
+  return new Promise((resolve) => setTimeout(resolve, milliseconds));
 }
 
 // --- HciPacket Class (adapted from dfu/dfu_transport_serial.py) ---
@@ -219,15 +196,22 @@ export class Dfu {
     }
     catch(e) {
       HciPacket.sequenceNumber = 0;
+      throw e;
     }
     finally {
       reader.releaseLock();
     }
-    // Decode SLIP
-    const decodedData = this.decodeSlip(buffer);
 
-    // Extract ACK number (assuming it's in the decoded data)
-    if (decodedData.length < 2) { // Check for sufficient length
+    // Extract the SLIP frame between the two 0xC0 delimiters, ignoring any
+    // stale bytes that arrived before the opening delimiter.
+    const firstC0 = buffer.indexOf(0xC0);
+    const secondC0 = buffer.indexOf(0xC0, firstC0 + 1);
+    if (firstC0 === -1 || secondC0 === -1) {
+      throw new Error("Received incomplete ACK.");
+    }
+    const decodedData = this.decodeSlip(buffer.slice(firstC0 + 1, secondC0));
+
+    if (decodedData.length < 2) {
       throw new Error("Received incomplete ACK.");
     }
     const ack = (decodedData[0] >> 3) & 0x07;
@@ -358,6 +342,10 @@ export class Dfu {
     }
 
     let bytesSent = 0;
+    // Brief stabilization pause before starting data transfer (mirrors Python's implicit
+    // pause at count=0 — it sleeps FLASH_PAGE_WRITE_TIME after the very first packet).
+    await sleep(FLASH_PAGE_WRITE_TIME * 1000);
+
     // Send firmware packets
     for (const [index, pkt] of frames.entries()) {
       await this.sendPacket(pkt);
@@ -388,6 +376,7 @@ export class Dfu {
     }
     this.transferInProgress = true;
     this.lastAck = -1; // Reset last ACK
+    HciPacket.sequenceNumber = 0; // Reset HCI sequence number
     const decoder = new TextDecoder();
     try {
       await this.port.open({ baudRate: 115200 }); // Open with correct baudrate