feat: upgrade FFE1 command to 34 bytes with control byte

Per 协议简述(3): Byte33 is now control instruction (0=IDLE, 1=scan,
2=treat), Byte34 is XOR checksum. Backward compat with 33-byte
read-back preserved. All command sites updated with correct control:
- auto-scan: control=0x01 (scan mode)
- treatment-setup: control=0x02 (treat mode)
- stopTreatment: control=0x00 (IDLE)

miniprogram/services/ble/commands.js

@@ -181,12 +181,13 @@ function startTreatment(regionMask) {
 
 function stopTreatment() {
   if (protocol.PROTOCOL_MODE === 'vendor_33') {
-    return writeRawCommand(protocol.buildVendorCommand33({
+    return writeRawCommand(protocol.buildVendorCommand({
       region_mask: 0,
       wavelength: protocol.WAVELENGTH.R,
       brightness: 0,
       current_gain: 0,
-      hold_time: 0
+      hold_time: 0,
+      control: protocol.CONTROL.IDLE
     }))
   }
   return writeCommandWithRetry(protocol.CMD.STOP, [])

miniprogram/services/ble/index.js

@@ -15,6 +15,7 @@ module.exports = {
   WAVELENGTH: protocol.WAVELENGTH,
   TREAT_MODE: protocol.TREAT_MODE,
   REGION: protocol.REGION,
+  CONTROL: protocol.CONTROL,
   DEVICE_ERR: protocol.DEVICE_ERR,
 
   // Connection
@@ -41,6 +42,7 @@ module.exports = {
   PROTOCOL_MODE: protocol.PROTOCOL_MODE,
   buildFrame: protocol.buildFrame,
   parseFrame: protocol.parseFrame,
+  buildVendorCommand: protocol.buildVendorCommand,
   buildVendorCommand33: protocol.buildVendorCommand33,
   parseVendorStatus: protocol.parseVendorStatus,
   parseStatusReport: protocol.parseStatusReport,

miniprogram/services/ble/protocol.js

@@ -155,9 +155,19 @@ function bytesToHex(bytes) {
   return hex.toUpperCase()
 }
 
-// --- vendor 33-byte command protocol ---
+// --- vendor 34-byte command protocol ---
+// Byte1-30: IO1~IO5 (6B each: R, IR, UV, Y, GainH, GainL)
+// Byte31-32: hold time (seconds, big-endian)
+// Byte33: control (0=IDLE, 1=scan, 2=treat)
+// Byte34: XOR checksum of Byte1-33
 
-function buildVendorCommand33(options) {
+var CONTROL = {
+  IDLE: 0x00,
+  SCAN: 0x01,
+  TREAT: 0x02
+}
+
+function buildVendorCommand(options) {
   options = options || {}
   var regionMask = options.region_mask || REGION.FULL_FACE
   var wavelength = options.wavelength || WAVELENGTH.R
@@ -165,6 +175,7 @@ function buildVendorCommand33(options) {
   var gain = clampUInt16(options.current_gain === undefined ? brightness : options.current_gain)
   var durationMs = options.duration_ms || 600000
   var holdSeconds = clampUInt16(options.hold_time === undefined ? Math.round(durationMs / 1000) : options.hold_time)
+  var control = options.control !== undefined ? options.control : CONTROL.TREAT
   var regions = [
     REGION.LEFT_CHEEK,
     REGION.RIGHT_CHEEK,
@@ -190,10 +201,15 @@ function buildVendorCommand33(options) {
   }
 
   bytes.push((holdSeconds >> 8) & 0xFF, holdSeconds & 0xFF)
+  bytes.push(control & 0xFF)
   bytes.push(xorChecksum(bytes))
   return bytes
 }
 
+function buildVendorCommand33(options) {
+  return buildVendorCommand(options)
+}
+
 function parseVendorStatus(buffer) {
   var bytes = bufferToBytes(buffer)
   if (bytes.length === 1) {
@@ -233,6 +249,26 @@ function parseVendorStatus(buffer) {
       raw_hex: bytesToHex(bytes)
     }
   }
+  if (bytes.length === 34) {
+    var ios34 = []
+    for (var j = 0; j < 5; j++) {
+      var off34 = j * 6
+      ios34.push({
+        red: bytes[off34], infrared: bytes[off34 + 1],
+        uv: bytes[off34 + 2], warm_yellow: bytes[off34 + 3],
+        gain: (bytes[off34 + 4] << 8) | bytes[off34 + 5]
+      })
+    }
+    return {
+      type: 'params',
+      is_heartbeat: false,
+      ios: ios34,
+      hold_time: (bytes[30] << 8) | bytes[31],
+      control: bytes[32],
+      checksum: bytes[33],
+      raw_hex: bytesToHex(bytes)
+    }
+  }
   if (bytes.length === 33) {
     var ios = []
     for (var i = 0; i < 5; i++) {
@@ -248,6 +284,7 @@ function parseVendorStatus(buffer) {
       is_heartbeat: false,
       ios: ios,
       hold_time: (bytes[30] << 8) | bytes[31],
+      control: -1,
       checksum: bytes[32],
       raw_hex: bytesToHex(bytes)
     }
@@ -364,6 +401,7 @@ module.exports = {
   TREAT_MODE: TREAT_MODE,
   REGION: REGION,
   REGION_NAMES: REGION_NAMES,
+  CONTROL: CONTROL,
   DEVICE_ERR: DEVICE_ERR,
 
   bufferToBytes: bufferToBytes,
@@ -373,6 +411,7 @@ module.exports = {
   bytesToUint32: bytesToUint32,
   hexToBytes: hexToBytes,
   bytesToHex: bytesToHex,
+  buildVendorCommand: buildVendorCommand,
   buildVendorCommand33: buildVendorCommand33,
 
   buildFrame: buildFrame,