Speed up 'available' function by inserting uint16_t cast

See arduino/ArduinoCore-avr#433 for details
lshw · Mar 9, 2022 · aa072fc · aa072fc
1 parent ea6b0e0
commit aa072fc
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/avr/libraries/SoftwareSerial/src/SoftwareSerial.cpp b/avr/libraries/SoftwareSerial/src/SoftwareSerial.cpp
@@ -469,7 +469,7 @@ int SoftwareSerial::available()
   if (!isListening())
     return 0;
 
-  return (_receive_buffer_tail + _SS_MAX_RX_BUFF - _receive_buffer_head) % _SS_MAX_RX_BUFF;
+  return ((uint16_t)(_receive_buffer_tail + _SS_MAX_RX_BUFF - _receive_buffer_head)) % _SS_MAX_RX_BUFF;
 }
 
 size_t SoftwareSerial::write(uint8_t b)