LCOM1920-T5G03

#ifndef _KBC_FUNC_H_

#define _KBC_FUNC_H_

#include <stdint.h>

#define GET         0 /* @brief Argument to get counter without incrementing */

#define INCREMENT   1 /* @brief Argument for incrementing counter */

/**

 * @brief Subscribes KBC Interrupts and disables Minix Default Keyboard IH

 * @param interrupt_bit Bit of Interrupt Vector that will be set when KBC Interrupt is pending

 * @param interrupt_id KBC Interrupt ID to specify the KBC Interrupt in other calls

 * @return Whether operation was sucessful or not

 */

int (subscribe_kbc_interrupt)(uint8_t interrupt_bit, int *interrupt_id);

/**

 * @brief Unsubcribes KBC Interrupts

 * @param interrupt_id KBC Interrupt ID, value via arguments on subscription of the interrupt_id

 * @see subscribe_kbc_interrupt

 * @return Whether operation was sucessful or not

 */

int (unsubscribe_kbc_interrupt)(int *interrupt_id);

/**

 * @brief KBC Interrupt Handler

 */

void (kbc_ih)(void);

/**

 * @brief Counter for sys_inb calls

 * @param increment Whether the value should be incremented or not

 * @return The current value of the counter

 */

uint32_t (sys_inb_counter)(int get_increment);

/**

 * @brief High-level function that polls keyboard for scancode

 * High-level function that polls keyboard for scancode of up to 2 bytes. If

 * scancode has only 1 byte, the second byte is set to 0x00.

 * @param bytes Array of at least 2 bytes to store scancode

 * @param size Size of scancode in bytes

 * @return 0 if operation was successful, 1 otherwise

 */

int (kbd_poll)(uint8_t bytes[], uint8_t *size);

/**

 * @brief Low-level function for reading byte from keyboard

 * Low-level function for reading byte from keyboard. Waits until output buffer

 * is full

 * @param value Pointer to variable where byte read from keyboard will be stored

 * @return 0 if operation was successful, 1 otherwise

 */

int (kbd_read_byte)(uint8_t *value);

#endif