diff options
Diffstat (limited to 'cores/arduino/HardwareSerial_private.h')
| -rw-r--r-- | cores/arduino/HardwareSerial_private.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/cores/arduino/HardwareSerial_private.h b/cores/arduino/HardwareSerial_private.h index 915d7a1..761a5e5 100644 --- a/cores/arduino/HardwareSerial_private.h +++ b/cores/arduino/HardwareSerial_private.h @@ -34,6 +34,11 @@ // slower. #if !defined(TXC0) #if defined(TXC) +// Some chips like ATmega8 don't have UPE, only PE. The other bits are +// named as expected. +#if !defined(UPE) && defined(PE) +#define UPE PE +#endif // On ATmega8, the uart and its bits are not numbered, so there is no TXC0 etc. #define TXC0 TXC #define RXEN0 RXEN @@ -99,7 +104,7 @@ void HardwareSerial::_rx_complete_irq(void) // No Parity error, read byte and store it in the buffer if there is // room unsigned char c = *_udr; - int i = (unsigned int)(_rx_buffer_head + 1) % SERIAL_BUFFER_SIZE; + rx_buffer_index_t i = (unsigned int)(_rx_buffer_head + 1) % SERIAL_RX_BUFFER_SIZE; // if we should be storing the received character into the location // just before the tail (meaning that the head would advance to the |