update condition to avoid reading an extra character after len charac…

…ters have been read Signed-off-by: Benjamin Cabé <benjamin@eclipse.org>
lancaster-university · Dec 20, 2016 · 192c966 · 192c966
1 parent 5ba5ccb
commit 192c966
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/source/bluetooth/MicroBitUARTService.cpp b/source/bluetooth/MicroBitUARTService.cpp
@@ -356,7 +356,7 @@ int MicroBitUARTService::read(uint8_t *buf, int len, MicroBitSerialMode mode)
     {
         int c;
 
-        while((c = getc(mode)) >= 0 && i < len)
+        while(i < len && (c = getc(mode)) >= 0)
         {
             buf[i] = c;
             i++;