root / lab3 / kbc.h @ 68
History | View | Annotate | Download (2.06 KB)
| 1 |
/**
|
|---|---|
| 2 |
* This file concerns everything related to the KBC (KeyBoard Controller, which
|
| 3 |
* actually also manages the mouse)
|
| 4 |
*/
|
| 5 |
|
| 6 |
#ifndef KBC_H_INCLUDED
|
| 7 |
#define KBC_H_INCLUDED
|
| 8 |
|
| 9 |
/**
|
| 10 |
* @brief Unsubcribes Interrupts
|
| 11 |
* @param interrupt_id Interrupt ID, value via arguments on subscription of the interrupt_id
|
| 12 |
* @see subscribe_kbc_interrupt, subscribe_timer_interrupt
|
| 13 |
* @return Whether operation was sucessful or not
|
| 14 |
*/
|
| 15 |
int (unsubscribe_interrupt)(int *interrupt_id); |
| 16 |
|
| 17 |
/**
|
| 18 |
* @brief High-level function that reads the command byte of the KBC
|
| 19 |
* @param cmd Pointer to variable where command byte read from KBC will be stored
|
| 20 |
* @return 0 if operation was successful, 1 otherwise
|
| 21 |
*/
|
| 22 |
int (kbc_read_cmd)(uint8_t *cmd);
|
| 23 |
|
| 24 |
/**
|
| 25 |
* @brief High-level function that changes the command byte of the KBC
|
| 26 |
* @param cmd New value for command byte of KBC
|
| 27 |
* @return 0 if operation was successful, 1 otherwise
|
| 28 |
*/
|
| 29 |
int (kbc_change_cmd)(uint8_t cmd);
|
| 30 |
|
| 31 |
/**
|
| 32 |
* @brief High-level function that restores KBC to normal state
|
| 33 |
* High-level function that restores KBC to normal state, because lcf_start
|
| 34 |
* changes the command byte of KBC. If this function is not used, there is a
|
| 35 |
* chance that the keyboard and keyboard interrupts remain disabled.
|
| 36 |
* @return 1 if operation was successful, 1 otherwise
|
| 37 |
*/
|
| 38 |
int (kbc_restore_keyboard)();
|
| 39 |
|
| 40 |
/**
|
| 41 |
* @brief Low-level function to issue a command to keyboard
|
| 42 |
* @param cmd command to be issued
|
| 43 |
* @return 0 if operation was successful, 1 otherwise
|
| 44 |
*/
|
| 45 |
int (kbc_issue_cmd)(uint8_t cmd);
|
| 46 |
|
| 47 |
/**
|
| 48 |
* @brief Low-level function to issue an argument of a command
|
| 49 |
* @param cmd argument to be issued
|
| 50 |
* @return 0 if operation was successful, 1 otherwise
|
| 51 |
*/
|
| 52 |
int (kbc_issue_arg)(uint8_t arg);
|
| 53 |
|
| 54 |
/**
|
| 55 |
* @brief Low-level function for reading byte from keyboard
|
| 56 |
* Low-level function for reading byte from keyboard. Waits until output buffer
|
| 57 |
* is full
|
| 58 |
* @param value Pointer to variable where byte read from keyboard will be stored
|
| 59 |
* @return 0 if operation was successful, 1 otherwise
|
| 60 |
*/
|
| 61 |
int (kbc_read_byte)(uint8_t *byte);
|
| 62 |
|
| 63 |
#endif //KBC_H_INCLUDED |