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SerialBase.h
- Committer:
- bogdanm
- Date:
- 2013-10-23
- Revision:
- 68:f37f3b9c9f0b
- Child:
- 75:dc225afb6914
File content as of revision 68:f37f3b9c9f0b:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef MBED_SERIALBASE_H #define MBED_SERIALBASE_H #include "platform.h" #if DEVICE_SERIAL #include "Stream.h" #include "FunctionPointer.h" #include "serial_api.h" namespace mbed { /** A base class for serial port implementations * Can't be instantiated directly (use Serial or RawSerial) */ class SerialBase { public: /** Set the baud rate of the serial port * * @param baudrate The baudrate of the serial port (default = 9600). */ void baud(int baudrate); enum Parity { None = 0, Odd, Even, Forced1, Forced0 }; enum IrqType { RxIrq = 0, TxIrq }; /** Set the transmission format used by the serial port * * @param bits The number of bits in a word (5-8; default = 8) * @param parity The parity used (SerialBase::None, SerialBase::Odd, SerialBase::Even, SerialBase::Forced1, SerialBase::Forced0; default = SerialBase::None) * @param stop The number of stop bits (1 or 2; default = 1) */ void format(int bits=8, Parity parity=SerialBase::None, int stop_bits=1); /** Determine if there is a character available to read * * @returns * 1 if there is a character available to read, * 0 otherwise */ int readable(); /** Determine if there is space available to write a character * * @returns * 1 if there is space to write a character, * 0 otherwise */ int writeable(); /** Attach a function to call whenever a serial interrupt is generated * * @param fptr A pointer to a void function, or 0 to set as none * @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty) */ void attach(void (*fptr)(void), IrqType type=RxIrq); /** Attach a member function to call whenever a serial interrupt is generated * * @param tptr pointer to the object to call the member function on * @param mptr pointer to the member function to be called * @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty) */ template<typename T> void attach(T* tptr, void (T::*mptr)(void), IrqType type=RxIrq) { if((mptr != NULL) && (tptr != NULL)) { _irq[type].attach(tptr, mptr); serial_irq_set(&_serial, (SerialIrq)type, 1); } } /** Generate a break condition on the serial line */ void send_break(); static void _irq_handler(uint32_t id, SerialIrq irq_type); protected: SerialBase(PinName tx, PinName rx); int _base_getc(); int _base_putc(int c); serial_t _serial; FunctionPointer _irq[2]; int _baud; }; } // namespace mbed #endif #endif