LCOM1920-T5G03

#include <lcom/lcf.h>

#include <lcom/lab3.h>

#include <stdbool.h>

#include <stdint.h>

#include "kbc.h"

#include "kbc_func.h"

#include "timer_func.h"

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;

}

extern uint8_t scancode[2];

extern int two_byte_scancode;

extern int got_error;

extern uint32_t sys_inb_counter;

int(kbd_test_scan)() {

    /// loop stuff

    int ipc_status, r;

    message msg;

    /// Keyboard interrupt handling

    uint8_t kbc_irq_bit = 1;

    int kbc_id = 0;

    int kbc_irq = BIT(kbc_irq_bit);

    if (subscribe_kbc_interrupt(kbc_irq_bit, &kbc_id)) return 1;

    /// cycle

    int good = 1;

    while (good) {

        /* Get a request message. */

        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 & kbc_irq) { /* subscribed interrupt */

                        kbc_ih();

                        if (!(two_byte_scancode || got_error)) { /* finished processing a scancode */

                            if (scancode[0] == TWO_BYTE_CODE) kbd_print_scancode(!(scancode[1] & BREAK_CODE_BIT), 2, scancode);

                            else                              kbd_print_scancode(!(scancode[0] & BREAK_CODE_BIT), 1, scancode);

                        } else { break; }

                        if (scancode[0] == ESC_BREAK_CODE) good = 0;

                    }

                    break;

                default:

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

            }

        } else { /* received standart message, not a notification */

            /* no standart message expected: do nothing */

        }

    }

    if (unsubscribe_interrupt(&kbc_id)) return 1;

    if (kbd_print_no_sysinb(sys_inb_counter)) return 1;

    return 0;

}

int(kbd_test_poll)() {

    uint8_t c[2]; uint8_t size;

    do{

        if(kbd_poll(c, &size)) return 1;

        if(kbd_print_scancode((~c[0])&BREAK_CODE_BIT, size, c)) return 1;

    }while(!(size == 1 && c[0] == ESC_BREAK_CODE));

    if(kbc_restore_kbd()) return 1;

    if(kbd_print_no_sysinb(sys_inb_counter)) return 1;

    return 0;

}

extern int no_interrupts;

int(kbd_test_timed_scan)(uint8_t idle) {

    /// loop stuff

    int ipc_status, r;

    message msg;

    /// Timer interrupt handling

    const uint32_t frequency = 60; // Frequency asummed at 60Hz

    uint8_t timer_irq_bit = 0;

    int timer_id = 0;

    int timer_irq = BIT(timer_irq_bit);

    if(subscribe_timer_interrupt(timer_irq_bit, &timer_id)) return 1;

    no_interrupts = 0;

    int time = 0;

    /// Keyboard interrupt handling

    uint8_t kbc_irq_bit = 1;

    int kbc_id = 0;

    int kbc_irq = BIT(kbc_irq_bit);

    if(subscribe_kbc_interrupt(kbc_irq_bit, &kbc_id)) return 1;

    /// cycle

    int good = 1;

    while (good) {

        /* Get a request message. */

        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 & timer_irq) { /* subscribed interrupt */

                        timer_int_handler();

                        //printf("no_interrupts: %d\n", no_interrupts);

                        if (no_interrupts%frequency == 0) time++;

                        if(time >= idle) good = 0;

                    }

                    if (msg.m_notify.interrupts & kbc_irq) { /// subscribed interrupt

                        kbc_ih();

                        if (!(two_byte_scancode || got_error)) { /// finished processing a scancode

                            if (scancode[0] == TWO_BYTE_CODE) kbd_print_scancode(!(scancode[1] & BREAK_CODE_BIT), 2, scancode);

                            else                              kbd_print_scancode(!(scancode[0] & BREAK_CODE_BIT), 1, scancode);

                            time = 0;

                            no_interrupts = 0;

                            if (scancode[0] == ESC_BREAK_CODE) good = 0;

                        }

                    }

                    break;

                default:

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

            }

        } else { /* received standart message, not a notification */

            /* no standart message expected: do nothing */

        }

    }

    if (unsubscribe_interrupt(&kbc_id)) return 1;

    if (unsubscribe_interrupt(&timer_id)) return 1;

    return 0;

}