Fixed some bugs when receiving large data.

discovery/libs/Pixy/src/chirp.cpp

@@ -856,6 +856,10 @@ int Chirp::realloc(uint32_t min)
         min = m_bufSize+CRP_BUFSIZE;
     else
         min += CRP_BUFSIZE;
+    
+    if(min==m_bufSize) 
+        return CRP_RES_OK;
+
     uint8_t *newbuf = new (std::nothrow) uint8_t[min];
     if (newbuf==NULL)
         return CRP_RES_ERROR_MEMORY;

discovery/src/ll_system.c

@@ -64,3 +64,8 @@ void ll_system_process() {
 void ll_system_delay(uint32_t msec) {
 	USB_OTG_BSP_mDelay(msec);
 }
+
+
+void ll_system_toggle_led() {	
+	STM_EVAL_LEDToggle(LED6);
+}