mbed(SerialHalfDuplex入り)
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Diff: SerialHalfDuplex.h
- Revision:
- 44:24d45a770a51
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- 43:e2ed12d17f06
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- 45:3d775a932e1d
--- a/SerialHalfDuplex.h Fri Oct 26 17:40:46 2012 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,172 +0,0 @@ -/* mbed Microcontroller Library - SerialHalfDuplex - * Copyright (c) 2010-2011 ARM Limited. All rights reserved. - */ - -#ifndef MBED_SERIALHALFDUPLEX_H -#define MBED_SERIALHALFDUPLEX_H - -#include "device.h" - -#if DEVICE_SERIAL - -#include "Serial.h" -#include "PinNames.h" -#include "PeripheralNames.h" - -namespace mbed { - -/** A serial port (UART) for communication with other devices using - * Half-Duplex, allowing transmit and receive on a single - * shared transmit and receive line. Only one end should be transmitting - * at a time. - * - * Both the tx and rx pin should be defined, and wired together. - * This is in addition to them being wired to the other serial - * device to allow both read and write functions to operate. - * - * For Simplex and Full-Duplex Serial communication, see Serial() - * - * Example: - * @code - * // Send a byte to a second HalfDuplex device, and read the response - * - * #include "mbed.h" - * - * // p9 and p10 should be wired together to form "a" - * // p28 and p27 should be wired together to form "b" - * // p9/p10 should be wired to p28/p27 as the Half Duplex connection - * - * SerialHalfDuplex a(p9, p10); - * SerialHalfDuplex b(p28, p27); - * - * void b_rx() { // second device response - * b.putc(b.getc() + 4); - * } - * - * int main() { - * b.attach(&b_rx); - * for (int c = 'A'; c < 'Z'; c++) { - * a.putc(c); - * printf("sent [%c]\n", c); - * wait(0.5); // b should respond - * if (a.readable()) { - * printf("received [%c]\n", a.getc()); - * } - * } - * } - * @endcode - */ -class SerialHalfDuplex : public Serial { - -public: - /** Create a half-duplex serial port, connected to the specified transmit - * and receive pins. - * - * These pins should be wired together, as well as to the target device - * - * @param tx Transmit pin - * @param rx Receive pin - */ - SerialHalfDuplex(PinName tx, PinName rx, const char *name = NULL); - -#if 0 // Inherited from Serial class, for documentation - /** 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 - }; - - /** 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 (Serial::None, Serial::Odd, - * Serial::Even, Serial::Forced1, Serial::Forced0; default = Serial::None) - * @param stop The number of stop bits (1 or 2; default = 1) - */ - void format(int bits = 8, Parity parity = Serial::None, int stop_bits -= 1); - - /** Write a character - * - * @param c The character to write to the serial port - */ - int putc(int c); - - /** Read a character - * - * Read a character from the serial port. This call will block - * until a character is available. For testing if a character is - * available for reading, see <readable>. - * - * @returns - * The character read from the serial port - */ - int getc(); - - /** Write a formated string - * - * @param format A printf-style format string, followed by the - * variables to use in formating the string. - */ - int printf(const char* format, ...); - - /** Read a formated string - * - * @param format A scanf-style format string, - * followed by the pointers to variables to store the results. - */ - int scanf(const char* format, ...); - - /** 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 - */ - void attach(void (*fptr)(void)); - - /** 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 - */ - template<typename T> - void attach(T* tptr, void (T::*mptr)(void)); - -#endif - -protected: - PinName _txpin; - - virtual int _putc(int c); - virtual int _getc(void); - -}; // End class SerialHalfDuplex - -} // End namespace - -#endif - -#endif