148 lines
3.0 KiB
C
148 lines
3.0 KiB
C
/*******************************************************************************/
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/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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/* */
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#include "types.h"
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#include "asm.h"
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#include "mouse.h"
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#include "keyboard.h"
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#include "vga.h"
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#include "video.h"
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/******************************************************************************/
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/* initialise la souris */
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bool initmouse(void)
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{
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u16 i = 1024;
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outkbd(0x64, 0xA8); /* autorisé Aux */
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outmseack(0xf3); /*sample */
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outmseack(100); /*sample donnée */
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outmseack(0xe8); /*resolution */
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outmseack(3); /*resolution donnée */
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outmseack(0xe7); /* echelle 2:1 */
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outmseack(0xf4); /* Autorise peripherique */
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outmsecmd(0x47); /* Autorise interruption */
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while (i-- > 0)
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if (inb(0x60) == 250)
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return 1;
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return 0;
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}
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static u8 bytepos = 0, mousereplies = 0;
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static u8 mpacket[3];
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static s32 mousex = 40, mousey = 12;
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static u16 oldx = 0, oldy = 0;
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static u8 oldchar = 0x00, oldattr = 0x07;
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static bool mousebut1 = 0, mousebut2 = 0, mousebut3 = 0;
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static u8 speed = 6;
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/******************************************************************************/
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/* ecriture vers souris */
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void outmseack(u8 value)
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{
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outkbd(0x64, 0xD4);
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outb(0x60, value);
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mousereplies++;
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}
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/* ecriture vers mode */
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void outmsecmd(u8 command)
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{
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outkbd(0x64, 0x60);
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outb(0x60, command);
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}
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/******************************************************************************/
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/* Handler d'interruption de la souris IRQ 12 */
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__attribute__((interrupt)) void mouse_handler(exception_stack_noerror *caller)
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{
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u8 mbyte = inb(0x60);
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s8 changex, changey;
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if (mousereplies > 0)
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{
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if (mbyte == 0xFA)
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{
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mousereplies--;
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goto endofint;
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}
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mousereplies = 0;
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}
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mpacket[bytepos] = mbyte;
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bytepos++;
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if (bytepos == 3)
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{
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bytepos = 0;
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if (mpacket[1] == 0)
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{
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changex = 0;
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}
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else
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{
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changex =
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(mpacket[0] & 0x10) ? mpacket[1] -
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256 : mpacket[1];
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}
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if (mpacket[2] == 0)
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{
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changey = 0;
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}
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else
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{
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changey =
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-((mpacket[0] & 0x20) ? mpacket[2] -
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256 : mpacket[2]);
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}
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mousex += (changex << speed);
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mousey += (changey << speed);
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if (mousex < 0)
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{
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mousex = 0;
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}
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if (mousex >= 65535)
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{
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mousex = 65535;
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}
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if (mousey < 0)
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{
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mousey = 0;
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}
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if (mousey >= 65535)
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{
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mousey = 65535;
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}
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videoinfos *info = getvideo_info();
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u16 newx = (u32) mousex * info->currentwidth / 65536;
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u16 newy = (u32) mousey * info->currentheight / 65536;
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// Retrieve mouse button status from packet
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mousebut1 = mpacket[0] & 1;
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mousebut2 = mpacket[0] & 2;
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mousebut3 = mpacket[0] & 4;
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// printf("RX:%d\tRY:%d\tX:%d\tY:%d\tB1:%d\tB2:%d\tB3:%d\t\r\n",changex,changey,mousex,mousey,mousebut1,mousebut2,mousebut3);
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if (!info->isgraphic)
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showchar(newx, newy, 0xDB, 0x0F);
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}
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endofint:
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irqendmaster();
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irqendslave();
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}
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/*******************************************************************************/
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