PS/2
Dependents: Synth Lab3Translator PS2_Keyboard CLI ... more
PS2Mouse.cpp
- Committer:
- shintamainjp
- Date:
- 2010-09-29
- Revision:
- 2:a57bbbec16b1
- Parent:
- 1:823c2798e398
File content as of revision 2:a57bbbec16b1:
/** * PS/2 mouse interface control class (Version 0.0.1) * * Copyright (C) 2010 Shinichiro Nakamura (CuBeatSystems) * http://shinta.main.jp/ */ #include "PS2Mouse.h" PS2Mouse::PS2Mouse(PinName clk_pin, PinName dat_pin) : ps2ms_init(clk_pin, dat_pin), ps2ms(clk_pin, dat_pin) { cnt = 0; } PS2Mouse::~PS2Mouse() { } bool PS2Mouse::processing(mouse_event_t *p) { bool emit = false; for (int i = 0; i < 4; i++) { const int c = ps2ms.getc(); if (0 <= c) { switch (cnt % 4) { case 0: mi.byte1.byte = c; /* * Check and reset a buffer if state is wrong. */ if (mi.byte1.bit.always1 == 0) { cnt = 0; while (0 <= ps2ms.getc()) { } } break; case 1: mi.byte2.byte = c; break; case 2: mi.byte3.byte = c; break; case 3: mi.byte4.byte = c; /* * Store a event data. */ p->left = mi.byte1.bit.btnLeft ? true : false; p->center = mi.byte1.bit.btnCenter ? true : false; p->right = mi.byte1.bit.btnRight ? true : false; p->x = mi.byte1.bit.signX ? (-256 + mi.byte2.byte) : mi.byte2.byte; p->y = mi.byte1.bit.signY ? (-256 + mi.byte3.byte) : mi.byte3.byte; p->z = mi.byte4.bit.signZ ? (-128 + mi.byte4.bit.value) : mi.byte4.bit.value; emit = true; break; } cnt++; } } return emit; }