Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- /*
- SoftwareSerial.h (formerly NewSoftSerial.h) -
- Multi-instance software serial library for Arduino/Wiring
- -- Interrupt-driven receive and other improvements by ladyada
- (http://ladyada.net)
- -- Tuning, circular buffer, derivation from class Print/Stream,
- multi-instance support, porting to 8MHz processors,
- various optimizations, PROGMEM delay tables, inverse logic and
- direct port writing by Mikal Hart (http://www.arduiniana.org)
- -- Pin change interrupt macros by Paul Stoffregen (http://www.pjrc.com)
- -- 20MHz processor support by Garrett Mace (http://www.macetech.com)
- -- ATmega1280/2560 support by Brett Hagman (http://www.roguerobotics.com/)
- 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
- The latest version of this library can always be found at
- http://arduiniana.org.
- */
- #ifndef SoftwareSerial_h
- #define SoftwareSerial_h
- #include <inttypes.h>
- #include <Stream.h>
- /******************************************************************************
- * Definitions
- ******************************************************************************/
- #define _SS_MAX_RX_BUFF 64 // RX buffer size
- #ifndef GCC_VERSION
- #define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
- #endif
- class SoftwareSerial : public Stream
- {
- private:
- // per object data
- uint8_t _receivePin;
- uint8_t _receiveBitMask;
- volatile uint8_t *_receivePortRegister;
- uint8_t _transmitBitMask;
- volatile uint8_t *_transmitPortRegister;
- uint16_t _rx_delay_centering;
- uint16_t _rx_delay_intrabit;
- uint16_t _rx_delay_stopbit;
- uint16_t _tx_delay;
- uint16_t _buffer_overflow:1;
- uint16_t _inverse_logic:1;
- // static data
- static char _receive_buffer[_SS_MAX_RX_BUFF];
- static volatile uint8_t _receive_buffer_tail;
- static volatile uint8_t _receive_buffer_head;
- static SoftwareSerial *active_object;
- // private methods
- void recv();
- uint8_t rx_pin_read();
- void tx_pin_write(uint8_t pin_state);
- void setTX(uint8_t transmitPin);
- void setRX(uint8_t receivePin);
- // private static method for timing
- static inline void tunedDelay(uint16_t delay);
- public:
- // public methods
- SoftwareSerial(uint8_t receivePin, uint8_t transmitPin, bool inverse_logic = false);
- ~SoftwareSerial();
- void begin(long speed);
- bool listen();
- void end();
- bool isListening() { return this == active_object; }
- bool overflow() { bool ret = _buffer_overflow; _buffer_overflow = false; return ret; }
- int peek();
- virtual size_t write(uint8_t byte);
- virtual int read();
- virtual int available();
- virtual void flush();
- using Print::write;
- // public only for easy access by interrupt handlers
- static inline void handle_interrupt();
- };
- // Arduino 0012 workaround
- #undef int
- #undef char
- #undef long
- #undef byte
- #undef float
- #undef abs
- #undef round
- #endif
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement