diff options
| author | Martino Facchin <m.facchin@arduino.cc> | 2017-12-01 15:41:18 +0100 |
|---|---|---|
| committer | Martino Facchin <m.facchin@arduino.cc> | 2017-12-18 09:59:29 +0100 |
| commit | 6e235622edb1b882401c77c171b0e738a093fd5b (patch) | |
| tree | c8ed200f803f9ab9bdeeba9be511689f095d49e2 /cores/arduino | |
| parent | 58006613a7c858417881744419c5da54cc21a401 (diff) | |
Fix MCUs without MPCM0 register
Diffstat (limited to 'cores/arduino')
| -rw-r--r-- | cores/arduino/HardwareSerial.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp index ecd7918..e99d503 100644 --- a/cores/arduino/HardwareSerial.cpp +++ b/cores/arduino/HardwareSerial.cpp @@ -100,7 +100,11 @@ void HardwareSerial::_tx_udr_empty_irq(void) // actually got written. Other r/w bits are preserved, and zeroes // written to the rest. +#ifdef MPCM0 *_ucsra = ((*_ucsra) & ((1 << U2X0) | (1 << MPCM0))) | (1 << TXC0); +#else + *_ucsra = ((*_ucsra) & ((1 << U2X0) | (1 << TXC0))); +#endif if (_tx_buffer_head == _tx_buffer_tail) { // Buffer empty, so disable interrupts @@ -236,7 +240,11 @@ size_t HardwareSerial::write(uint8_t c) // be cleared when no bytes are left, causing flush() to hang ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { *_udr = c; +#ifdef MPCM0 *_ucsra = ((*_ucsra) & ((1 << U2X0) | (1 << MPCM0))) | (1 << TXC0); +#else + *_ucsra = ((*_ucsra) & ((1 << U2X0) | (1 << TXC0))); +#endif } return 1; } |