devices/mouse.c


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#include "mouse.h"
#include "ps2_controller.h"
#include <stdint.h>
#include <stdio.h>
#include <sys/io.h>

void
mouse_init()
{
  // Sending a command or data byte to the mouse (to port 0x60) must be preceded by sending a 0xD4 byte to port 0x64
  // (with appropriate waits on port 0x64, bit 1, before sending each output byte). Note: this 0xD4 byte does not
  // generate any ACK, from either the keyboard or mouse.

  // enable second ps/2
  // outb(0xa8, 0x64);

  // outb(0x64, 0xd4);
  // outb(0x60, 0xf4);
  // printf("mouse_init: enable streaming(0xf4): %x\n", inb(0x60));

  outb(0xd4, 0x64);
  outb(0xeb, 0x60); // single packet
  printf("mouse_init: single packet 0xeb\n");
  while ((inb(0x64) & 0x01) == 0) {}
  for (int i = 0; i < 10; ++i) printf("%x ", inb(0x60));
  printf("\n");
}

void
mouse_packet()
{
  printf("mouse packet: ");
  for (int i = 0; i < 4; ++i) printf("%x ", ps2_read_port2());
  printf("\n");
}