Jordan Earls / PS2_MbedConsole

A version of the PS/2 library customized for MbedConsole. Also includes a few things that make it's behavior easier to control and a few bug fixes.

Dependents:   MbedConsole

Fork of PS2 by Shinichiro Nakamura

PS2Mouse.cpp@5:ead90ca02b18, 2012-09-28 (annotated)

Committer:
earlz
Date:
Fri Sep 28 04:03:35 2012 +0000
Revision:
5:ead90ca02b18
Parent:
2:a57bbbec16b1 
Changed interrupt priority and initialization to use keyboard defaults

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shintamainjp 1:823c2798e398 1 /**
shintamainjp 1:823c2798e398 2 * PS/2 mouse interface control class (Version 0.0.1)
shintamainjp 1:823c2798e398 3 *
shintamainjp 1:823c2798e398 4 * Copyright (C) 2010 Shinichiro Nakamura (CuBeatSystems)
shintamainjp 1:823c2798e398 5 * http://shinta.main.jp/
shintamainjp 1:823c2798e398 6 */
shintamainjp 1:823c2798e398 7 #include "PS2Mouse.h"
shintamainjp 1:823c2798e398 8
shintamainjp 1:823c2798e398 9 PS2Mouse::PS2Mouse(PinName clk_pin, PinName dat_pin)
shintamainjp 1:823c2798e398 10 : ps2ms_init(clk_pin, dat_pin), ps2ms(clk_pin, dat_pin) {
shintamainjp 1:823c2798e398 11 cnt = 0;
shintamainjp 1:823c2798e398 12 }
shintamainjp 1:823c2798e398 13
shintamainjp 1:823c2798e398 14 PS2Mouse::~PS2Mouse() {
shintamainjp 1:823c2798e398 15 }
shintamainjp 1:823c2798e398 16
shintamainjp 1:823c2798e398 17 bool PS2Mouse::processing(mouse_event_t *p) {
shintamainjp 1:823c2798e398 18 bool emit = false;
shintamainjp 2:a57bbbec16b1 19 for (int i = 0; i < 4; i++) {
shintamainjp 2:a57bbbec16b1 20 const int c = ps2ms.getc();
shintamainjp 2:a57bbbec16b1 21 if (0 <= c) {
shintamainjp 2:a57bbbec16b1 22 switch (cnt % 4) {
shintamainjp 2:a57bbbec16b1 23 case 0:
shintamainjp 2:a57bbbec16b1 24 mi.byte1.byte = c;
shintamainjp 2:a57bbbec16b1 25 /*
shintamainjp 2:a57bbbec16b1 26 * Check and reset a buffer if state is wrong.
shintamainjp 2:a57bbbec16b1 27 */
shintamainjp 2:a57bbbec16b1 28 if (mi.byte1.bit.always1 == 0) {
shintamainjp 2:a57bbbec16b1 29 cnt = 0;
shintamainjp 2:a57bbbec16b1 30 while (0 <= ps2ms.getc()) {
shintamainjp 2:a57bbbec16b1 31 }
shintamainjp 2:a57bbbec16b1 32 }
shintamainjp 2:a57bbbec16b1 33 break;
shintamainjp 2:a57bbbec16b1 34 case 1:
shintamainjp 2:a57bbbec16b1 35 mi.byte2.byte = c;
shintamainjp 2:a57bbbec16b1 36 break;
shintamainjp 2:a57bbbec16b1 37 case 2:
shintamainjp 2:a57bbbec16b1 38 mi.byte3.byte = c;
shintamainjp 2:a57bbbec16b1 39 break;
shintamainjp 2:a57bbbec16b1 40 case 3:
shintamainjp 2:a57bbbec16b1 41 mi.byte4.byte = c;
shintamainjp 2:a57bbbec16b1 42 /*
shintamainjp 2:a57bbbec16b1 43 * Store a event data.
shintamainjp 2:a57bbbec16b1 44 */
shintamainjp 2:a57bbbec16b1 45 p->left = mi.byte1.bit.btnLeft ? true : false;
shintamainjp 2:a57bbbec16b1 46 p->center = mi.byte1.bit.btnCenter ? true : false;
shintamainjp 2:a57bbbec16b1 47 p->right = mi.byte1.bit.btnRight ? true : false;
shintamainjp 2:a57bbbec16b1 48 p->x = mi.byte1.bit.signX ? (-256 + mi.byte2.byte) : mi.byte2.byte;
shintamainjp 2:a57bbbec16b1 49 p->y = mi.byte1.bit.signY ? (-256 + mi.byte3.byte) : mi.byte3.byte;
shintamainjp 2:a57bbbec16b1 50 p->z = mi.byte4.bit.signZ ? (-128 + mi.byte4.bit.value) : mi.byte4.bit.value;
shintamainjp 2:a57bbbec16b1 51 emit = true;
shintamainjp 2:a57bbbec16b1 52 break;
shintamainjp 2:a57bbbec16b1 53 }
shintamainjp 2:a57bbbec16b1 54 cnt++;
shintamainjp 1:823c2798e398 55 }
shintamainjp 1:823c2798e398 56 }
shintamainjp 1:823c2798e398 57 return emit;
shintamainjp 1:823c2798e398 58 }