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Diffstat (limited to 'cores/arduino/HardwareSerial_private.h')
| -rw-r--r-- | cores/arduino/HardwareSerial_private.h | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/cores/arduino/HardwareSerial_private.h b/cores/arduino/HardwareSerial_private.h deleted file mode 100644 index 2e23cec..0000000 --- a/cores/arduino/HardwareSerial_private.h +++ /dev/null @@ -1,123 +0,0 @@ -/* - HardwareSerial_private.h - Hardware serial library for Wiring - Copyright (c) 2006 Nicholas Zambetti. All right reserved. - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Modified 23 November 2006 by David A. Mellis - Modified 28 September 2010 by Mark Sproul - Modified 14 August 2012 by Alarus -*/ - -#include "wiring_private.h" - -// this next line disables the entire HardwareSerial.cpp, -// this is so I can support Attiny series and any other chip without a uart -#if defined(HAVE_HWSERIAL0) || defined(HAVE_HWSERIAL1) || defined(HAVE_HWSERIAL2) || defined(HAVE_HWSERIAL3) - -// Ensure that the various bit positions we use are available with a 0 -// postfix, so we can always use the values for UART0 for all UARTs. The -// alternative, passing the various values for each UART to the -// HardwareSerial constructor also works, but makes the code bigger and -// 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 -#define TXEN0 TXEN -#define RXCIE0 RXCIE -#define UDRIE0 UDRIE -#define U2X0 U2X -#define UPE0 UPE -#define UDRE0 UDRE -#elif defined(TXC1) -// Some devices have uart1 but no uart0 -#define TXC0 TXC1 -#define RXEN0 RXEN1 -#define TXEN0 TXEN1 -#define RXCIE0 RXCIE1 -#define UDRIE0 UDRIE1 -#define U2X0 U2X1 -#define UPE0 UPE1 -#define UDRE0 UDRE1 -#else -#error No UART found in HardwareSerial.cpp -#endif -#endif // !defined TXC0 - -// Check at compile time that it is really ok to use the bit positions of -// UART0 for the other UARTs as well, in case these values ever get -// changed for future hardware. -#if defined(TXC1) && (TXC1 != TXC0 || RXEN1 != RXEN0 || RXCIE1 != RXCIE0 || \ - UDRIE1 != UDRIE0 || U2X1 != U2X0 || UPE1 != UPE0 || \ - UDRE1 != UDRE0) -#error "Not all bit positions for UART1 are the same as for UART0" -#endif -#if defined(TXC2) && (TXC2 != TXC0 || RXEN2 != RXEN0 || RXCIE2 != RXCIE0 || \ - UDRIE2 != UDRIE0 || U2X2 != U2X0 || UPE2 != UPE0 || \ - UDRE2 != UDRE0) -#error "Not all bit positions for UART2 are the same as for UART0" -#endif -#if defined(TXC3) && (TXC3 != TXC0 || RXEN3 != RXEN0 || RXCIE3 != RXCIE0 || \ - UDRIE3 != UDRIE0 || U3X3 != U3X0 || UPE3 != UPE0 || \ - UDRE3 != UDRE0) -#error "Not all bit positions for UART3 are the same as for UART0" -#endif - -// Constructors //////////////////////////////////////////////////////////////// - -HardwareSerial::HardwareSerial( - volatile uint8_t *ubrrh, volatile uint8_t *ubrrl, - volatile uint8_t *ucsra, volatile uint8_t *ucsrb, - volatile uint8_t *ucsrc, volatile uint8_t *udr) : - _ubrrh(ubrrh), _ubrrl(ubrrl), - _ucsra(ucsra), _ucsrb(ucsrb), _ucsrc(ucsrc), - _udr(udr), - _rx_buffer_head(0), _rx_buffer_tail(0), - _tx_buffer_head(0), _tx_buffer_tail(0) -{ -} - -// Actual interrupt handlers ////////////////////////////////////////////////////////////// - -void HardwareSerial::_rx_complete_irq(void) -{ - if (bit_is_clear(*_ucsra, UPE0)) { - // No Parity error, read byte and store it in the buffer if there is - // room - unsigned char c = *_udr; - 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 - // current location of the tail), we're about to overflow the buffer - // and so we don't write the character or advance the head. - if (i != _rx_buffer_tail) { - _rx_buffer[_rx_buffer_head] = c; - _rx_buffer_head = i; - } - } else { - // Parity error, read byte but discard it - *_udr; - }; -} - -#endif // whole file |