fix ESP32 BLE bug

Author: i3water

src/Blinker/BlinkerProtocol.h

@@ -24,6 +24,7 @@ class BlinkerProtocol
             , state(CONNECTING)
             , isFresh(false)
             , isAvail(false)
+            , availState(false)
             , canParse(false)
         {}
 
@@ -49,7 +50,11 @@ class BlinkerProtocol
 
         void run();
 
-        bool available() { return isFresh; }
+        bool available() {
+            bool _avail = availState;
+            availState = false;
+            return _avail;
+        }
 
         String readString()
         {
@@ -103,6 +108,7 @@ class BlinkerProtocol
 
         void flush() {
             isFresh = false;
+            availState = false;
         }
 
     private :
@@ -112,6 +118,7 @@ class BlinkerProtocol
             if (isAvail) {
                 isFresh = true;
                 canParse = true;
+                availState = true;
             }
             return isAvail;
         }
@@ -126,7 +133,7 @@ class BlinkerProtocol
             }
         }
 
-        void isParsed() { isFresh = false; canParse = false; }// BLINKER_LOG1("isParsed");
+        void isParsed() { isFresh = false; canParse = false; availState = false; }// BLINKER_LOG1("isParsed");
 
         bool parseState() { return canParse; }
 
@@ -135,6 +142,7 @@ class BlinkerProtocol
         BlinkerState    state;
         bool            isFresh;
         bool            isAvail;
+        bool            availState;
         bool            canParse;
 
         void begin()

src/BlinkerSimpleESP32_BLE.h

@@ -110,6 +110,7 @@ class BlinkerTransportESP32_BLE
         char                    BLEBuf[BLINKER_BUFFER_SIZE];
         bool                    isAvail;
         bool                    isFresh;
+        uint32_t                _bufLen;
         uint32_t                freshTime;
         BLEServer               *pServer;
         BLEService              *pService;
@@ -133,27 +134,29 @@ class BlinkerTransportESP32_BLE
 
         void onWrite(BLECharacteristic *pCharacteristic) {
             std::string value = pCharacteristic->getValue();
+            int vlen = value.length();
 
-            if (value.length() > 0) {
+            if (vlen > 0) {
                 freshTime = millis();
 
-                if (!isFresh) {
-                    strcpy(BLEBuf, value.c_str());
-                    isFresh = true;
-                }
-                else {
-                    strcat(BLEBuf, value.c_str());
+                for (uint8_t _num = 0; _num < vlen; _num++) {
+                    BLEBuf[_bufLen] = value[_num];
+                    _bufLen++;
                 }
 
-                if (String(value.c_str()).endsWith("\n")) {
+                isFresh = true;
+
+                if (value[vlen-1] == '\n') {
                     isAvail = true;
+                    _bufLen = 0;
                 }
             }
         }
 
         void checkTimeOut() {
             if (isFresh && !isAvail && (millis() - freshTime) > BLINKER_STREAM_TIMEOUT) {
                 isAvail = true;
+                _bufLen = 0;
             }
         }
 };