Handle zero-length messages (where the header is enough info)

nRF24 · Dec 17, 2011 · 1ea7f80 · 1ea7f80
1 parent 9438bd1
commit 1ea7f80
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/RF24Network.cpp b/RF24Network.cpp
@@ -178,10 +178,14 @@ bool RF24Network::write(RF24NetworkHeader& header,const void* message, size_t le
 
   // Build the full frame to send
   memcpy(frame_buffer,&header,sizeof(RF24NetworkHeader));
-  memcpy(frame_buffer + sizeof(RF24NetworkHeader),message,min(frame_size-sizeof(RF24NetworkHeader),len));
+  if (len)
+    memcpy(frame_buffer + sizeof(RF24NetworkHeader),message,min(frame_size-sizeof(RF24NetworkHeader),len));
 
   IF_SERIAL_DEBUG(printf_P(PSTR("%lu: NET Sending %s\n\r"),millis(),header.toString()));
-  IF_SERIAL_DEBUG(const uint16_t* i = reinterpret_cast<const uint16_t*>(message);printf_P(PSTR("%lu: NET message %04x\n\r"),millis(),*i));
+  if (len)
+  {
+    IF_SERIAL_DEBUG(const uint16_t* i = reinterpret_cast<const uint16_t*>(message);printf_P(PSTR("%lu: NET message %04x\n\r"),millis(),*i));
+  }
 
   // If the user is trying to send it to himself
   if ( header.to_node == node_address )