diff options
Diffstat (limited to 'cores')
| -rw-r--r-- | cores/arduino/HardwareSerial.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp index 81b406a..a270ace 100644 --- a/cores/arduino/HardwareSerial.cpp +++ b/cores/arduino/HardwareSerial.cpp @@ -171,7 +171,7 @@ int HardwareSerial::read(void) return -1; } else { unsigned char c = _rx_buffer[_rx_buffer_tail]; - _rx_buffer_tail = (unsigned int)(_rx_buffer_tail + 1) % SERIAL_BUFFER_SIZE; + _rx_buffer_tail = (uint8_t)(_rx_buffer_tail + 1) % SERIAL_BUFFER_SIZE; return c; } } @@ -207,7 +207,7 @@ size_t HardwareSerial::write(uint8_t c) sbi(*_ucsra, TXC0); return 1; } - int i = (_tx_buffer_head + 1) % SERIAL_BUFFER_SIZE; + uint8_t i = (_tx_buffer_head + 1) % SERIAL_BUFFER_SIZE; // If the output buffer is full, there's nothing for it other than to // wait for the interrupt handler to empty it a bit |