LCOM1920-T02G10

#include <lcom/lcf.h>

#include <minix/sysutil.h>

#include <lcom/lab3.h>

#include <stdbool.h>

#include <stdint.h>

//#include <timer.c>

#define IRQ_KB 1

#define DELAY_US 20000

#define EXIT_CODE 0x81

#define I_O_BUFFER 0x60

static uint32_t scancode;

int main(int argc, char *argv[]) {

  // sets the language of LCF messages (can be either EN-US or PT-PT)

  lcf_set_language("EN-US");

  // enables to log function invocations that are being "wrapped" by LCF

  // [comment this out if you don't want/need it]

  lcf_trace_calls("/home/lcom/labs/lab3/trace.txt");

  // enables to save the output of printf function calls on a file

  // [comment this out if you don't want/need it]

  lcf_log_output("/home/lcom/labs/lab3/output.txt");

  // handles control over to LCF

  // [LCF handles command line arguments and invokes the right function]

  if (lcf_start(argc, argv))

     return 1;

  // LCF clean up tasks

  // [must be the last statement before return]

  lcf_cleanup();

  return 0;

}

void(kbc_ih)() {}

int(kbd_test_scan)() {

  /* To be completed by the students */

  int ipc_status;

  uint8_t r, bit_no = 0;

  message msg;

  int hook_id = bit_no;

  uint8_t scan_arr[2] = {0, 0};

  scan_arr[0] = scancode & 0xFF;

  scan_arr[1] = scancode & 0xFF00;

  int flag=0;

  printf("%d\n",

         sys_irqsetpolicy(IRQ_KB, IRQ_REENABLE | IRQ_EXCLUSIVE, &hook_id));

  /* sys_outb(0x64, 0x20);

  sys_inb(0x64, &scancode);

  printf("%x\n", scancode);

  if (scancode & 0x10) {

    scancode = (scancode & 0xEF);

  }

  printf("%x\n", scancode);

  sys_outb(0x64, 0x60);

  sys_outb(0x64, scancode); */

  printf("%x\n", scancode);

  kbc_ih();

  printf("\n");

  while ((scancode & 0xFF) !=

         EXIT_CODE) { /* You may want to use a different condition */

    /* Get a request message. */

    // printf("1\n");

    // printf("cont:%d, time:%d\n\n",cont/60,time);

    if ((r = driver_receive(ANY, &msg, &ipc_status)) != 0) {

      printf("driver_receive failed with: %d", r);

      continue;

    }

    if (is_ipc_notify(ipc_status)) { /* received notification */

      switch (_ENDPOINT_P(msg.m_source)) {

      case HARDWARE: /* hardware interrupt notification */

        if (msg.m_notify.interrupts & BIT(0)) { /* subscribed interrupt */

          sys_inb(0x64, &scancode);

          if (scancode & 0x01) {

            sys_inb(0x60, &scancode);

          }

          if(scancode !=0xe0 && flag==0)

          {

            //tickdelay(micros_to_ticks(DELAY_US));

            scan_arr[0] = scancode;

            kbd_print_scancode(!(scancode & 0x80), 1, scan_arr);

          }

          else if(scancode==0xe0)

          {

            scan_arr[0]=scancode;

            flag=1;

          }

          else if(flag==1)

          {

            scan_arr[1] = scancode;

            kbd_print_scancode(!(scancode & 0x80), 2, scan_arr);

            flag=0;

          }

        }

        // printf("msg:%x\n",msg.m_notify.interrupts);

        break;

      default:

        // printf("2\n");

        break; /* no other notifications expected: do nothing */

      }

    } else {

      // printf("3\n"); /* received a standard message, not a notification */

      /* no standard messages expected: do nothing */

    }

  }

  if (sys_irqrmpolicy(&hook_id) != 0)

    return 1;

  return 0;

}

int(kbd_test_poll)() {

  /* To be completed by the students */

  printf("%s is not yet implemented!\n", __func__);

  return 1;

}

int(kbd_test_timed_scan)(uint8_t n) {

  /* To be completed by the students */

  printf("%s is not yet implemented!\n", __func__);

  return 1;

}