change signature of cccd write callback

Author: hathach

libraries/Bluefruit52Lib/examples/custom_hrm/custom_hrm.ino

@@ -174,13 +174,12 @@ void disconnect_callback(uint8_t reason)
   Serial.println("Advertising!");
 }
 
-void cccd_callback(BLECharacteristic& chr, ble_gatts_evt_write_t* request)
+void cccd_callback(BLECharacteristic& chr, uint16_t cccd_value)
 {
-    (void) request;
-
     // Display the raw request packet
     Serial.print("CCCD Updated: ");
-    Serial.printBuffer(request->data, request->len);
+    //Serial.printBuffer(request->data, request->len);
+    Serial.print(cccd_value);
     Serial.println("");
 
     // Check the characteristic this CCCD update is associated with in case

libraries/Bluefruit52Lib/src/BLECharacteristic.cpp

@@ -138,7 +138,7 @@ void BLECharacteristic::setWriteCallback(write_cb_t fp)
   _wr_cb = fp;
 }
 
-void BLECharacteristic::setCccdWriteCallback(write_cb_t fp)
+void BLECharacteristic::setCccdWriteCallback(write_cccd_cb_t fp)
 {
   _cccd_wr_cb = fp;
 }
@@ -334,7 +334,9 @@ void BLECharacteristic::eventHandler(ble_evt_t* event)
       // CCCD write
       if ( _cccd_wr_cb && (request->handle == _handles.cccd_handle) )
       {
-        _cccd_wr_cb(*this, request);
+        uint16_t value;
+        memcpy(&value, request->data, 2);
+        _cccd_wr_cb(*this, value);
       }
     }
     break;

libraries/Bluefruit52Lib/src/BLECharacteristic.h

@@ -75,6 +75,7 @@ class BLECharacteristic
     typedef void (*read_authorize_cb_t)  (BLECharacteristic& chr, ble_gatts_evt_read_t * request);
     typedef void (*write_authorize_cb_t) (BLECharacteristic& chr, ble_gatts_evt_write_t* request);
     typedef void (*write_cb_t)           (BLECharacteristic& chr, ble_gatts_evt_write_t* request);
+    typedef void (*write_cccd_cb_t)      (BLECharacteristic& chr, uint16_t value);
 
   protected:
     bool _is_temp;
@@ -101,7 +102,7 @@ class BLECharacteristic
     write_authorize_cb_t _wr_authorize_cb;
 
     write_cb_t           _wr_cb;
-    write_cb_t           _cccd_wr_cb;
+    write_cccd_cb_t      _cccd_wr_cb;
 
     void init(void);
     void eventHandler(ble_evt_t* event);
@@ -137,7 +138,7 @@ class BLECharacteristic
 
     // Callback
     void setWriteCallback(write_cb_t fp);
-    void setCccdWriteCallback(write_cb_t fp);
+    void setCccdWriteCallback(write_cccd_cb_t fp);
 
     void setReadAuthorizeCallback(read_authorize_cb_t fp);
     void setWriteAuthorizeCallbak(write_authorize_cb_t fp);