Stop MicroBitSerial::read(ASYNC) dropping bytes

Fixes lancaster-university#441
martinwork · May 26, 2019 · d84b479 · d84b479
1 parent 8c2403e
commit d84b479
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/source/drivers/MicroBitSerial.cpp b/source/drivers/MicroBitSerial.cpp
@@ -646,7 +646,7 @@ int MicroBitSerial::read(uint8_t *buffer, int bufferLen, MicroBitSerialMode mode
 
     if(mode == ASYNC)
     {
-        while((temp = getChar(mode)) != MICROBIT_NO_DATA && bufferIndex < bufferLen)
+        while(bufferIndex < bufferLen && (temp = getChar(mode)) != MICROBIT_NO_DATA)
         {
             buffer[bufferIndex] = (char)temp;
             bufferIndex++;