Pallavi Prasad / PS2

PS/2 Keyboard

Dependents:   Hangman

PS2MS.h@0:62b62530a82f, 2012-10-11 (annotated)

Committer:
pprasad7
Date:
Thu Oct 11 20:15:09 2012 +0000
Revision:
0:62b62530a82f
PS/2 Input;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pprasad7 0:62b62530a82f 1 /**
pprasad7 0:62b62530a82f 2 * PS/2 mouse interface control class (Version 0.0.1)
pprasad7 0:62b62530a82f 3 *
pprasad7 0:62b62530a82f 4 * Copyright (C) 2010 Shinichiro Nakamura (CuBeatSystems)
pprasad7 0:62b62530a82f 5 * http://shinta.main.jp/
pprasad7 0:62b62530a82f 6 */
pprasad7 0:62b62530a82f 7
pprasad7 0:62b62530a82f 8 #ifndef _PS2MS_H_
pprasad7 0:62b62530a82f 9 #define _PS2MS_H_
pprasad7 0:62b62530a82f 10
pprasad7 0:62b62530a82f 11 #include "mbed.h"
pprasad7 0:62b62530a82f 12
pprasad7 0:62b62530a82f 13 /**
pprasad7 0:62b62530a82f 14 * PS/2 mouse interface control class.
pprasad7 0:62b62530a82f 15 */
pprasad7 0:62b62530a82f 16 class PS2MS {
pprasad7 0:62b62530a82f 17 public:
pprasad7 0:62b62530a82f 18 /**
pprasad7 0:62b62530a82f 19 * Create.
pprasad7 0:62b62530a82f 20 *
pprasad7 0:62b62530a82f 21 * @param clk_pin Clock pin.
pprasad7 0:62b62530a82f 22 * @param dat_pin Data pin.
pprasad7 0:62b62530a82f 23 */
pprasad7 0:62b62530a82f 24 PS2MS(PinName clk_pin, PinName dat_pin);
pprasad7 0:62b62530a82f 25
pprasad7 0:62b62530a82f 26 /**
pprasad7 0:62b62530a82f 27 * Destory.
pprasad7 0:62b62530a82f 28 */
pprasad7 0:62b62530a82f 29 virtual ~PS2MS();
pprasad7 0:62b62530a82f 30
pprasad7 0:62b62530a82f 31 /**
pprasad7 0:62b62530a82f 32 * Get a data from a PS/2 device.
pprasad7 0:62b62530a82f 33 *
pprasad7 0:62b62530a82f 34 * @return A data from a PS/2 device.
pprasad7 0:62b62530a82f 35 */
pprasad7 0:62b62530a82f 36 virtual int getc(void);
pprasad7 0:62b62530a82f 37
pprasad7 0:62b62530a82f 38 /**
pprasad7 0:62b62530a82f 39 * Set timeout.
pprasad7 0:62b62530a82f 40 *
pprasad7 0:62b62530a82f 41 * @param ms Timeout ms.
pprasad7 0:62b62530a82f 42 */
pprasad7 0:62b62530a82f 43 virtual void setTimeout(int ms);
pprasad7 0:62b62530a82f 44
pprasad7 0:62b62530a82f 45 private:
pprasad7 0:62b62530a82f 46 static const int RINGBUFSIZ = 1024;
pprasad7 0:62b62530a82f 47 InterruptIn clk; /**< Interrupt input for CLK. */
pprasad7 0:62b62530a82f 48 DigitalIn dat; /**< Digital input for DAT. */
pprasad7 0:62b62530a82f 49 Timeout wdt; /**< Watch dog timer. */
pprasad7 0:62b62530a82f 50 Timer tot; /**< Timeout timer. */
pprasad7 0:62b62530a82f 51 int timeout; /**< Timeout[ms] for getc(). */
pprasad7 0:62b62530a82f 52
pprasad7 0:62b62530a82f 53 typedef struct {
pprasad7 0:62b62530a82f 54 int bitcnt;
pprasad7 0:62b62530a82f 55 int cStart;
pprasad7 0:62b62530a82f 56 int cEnd;
pprasad7 0:62b62530a82f 57 uint8_t buffer[RINGBUFSIZ];
pprasad7 0:62b62530a82f 58 } work_t;
pprasad7 0:62b62530a82f 59 work_t work;
pprasad7 0:62b62530a82f 60
pprasad7 0:62b62530a82f 61 void func_timeout(void);
pprasad7 0:62b62530a82f 62 void func_fall(void);
pprasad7 0:62b62530a82f 63
pprasad7 0:62b62530a82f 64 void init_work(void);
pprasad7 0:62b62530a82f 65 };
pprasad7 0:62b62530a82f 66
pprasad7 0:62b62530a82f 67 #endif