Revision 10
Working function kbc_test_scan()
| lab3/i8042.h | ||
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| 9 | 9 |
* Constants for programming the i8042 Keyboard. |
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*/ |
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#define KEYBOARD_IRQ 0x09 /* Keyboard IRQ address */ |
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//#define KEYBOARD_IRQ 0x09 /* Keyboard IRQ address */
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#define BIT(n) (0x01<<(n)) |
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//#define BIT(n) (0x01<<(n))
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#define DELAY_US 20000 |
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| lab3/keyboard.c | ||
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#include <lcom/lcf.h>
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#include "keyboard.h"
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#include <lcom/lab3.h> |
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#include <stdbool.h> |
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#include <stdint.h> |
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#include "i8042.h" |
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u8int_t scan_code=0; // make code or break code |
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uint8_t scan_code=0; // make code or break code |
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int keyboard_id = KEYBOARD_IRQ; // KEYBOARD_IRQ is defined in interrupt.h in .minix-src folder |
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uint32_t cnt = 0; // counter of sys_inb calls |
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| ... | ... | |
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cnt++; |
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#endif |
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return 0; |
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} |
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void (kbc_ih)(void){
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u8int_t status_reg;
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uint8_t status_reg;
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if(util_sys_inb(STATUS_REG,status_reg)!=0){ //checks if there is an error
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if(util_sys_inb(STATUS_REG,&status_reg)!=0){ //checks if there is an error
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return; |
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} |
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if(((status_reg & STAT_REG_OBF)==0) ||((status_reg&(STAT_REG_PAR|STAT_REG_TIMEOUT))!=0)){ //checks if there is a parity or timeout error (mask -> 0xC0, bit 7 and 6 set) and checks if output buffer is empty
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return; |
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} |
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util_sys_inb(OUTPUT_BUF,status_code);
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util_sys_inb(OUTPUT_BUF,&scan_code);
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} |
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| lab3/keyboard.h | ||
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#include <lcom/lcf.h> |
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#ifndef _KEYBOARD_H |
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#define _KEYBOARD_H |
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#include <lcom/lab3.h> |
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#include <lcom/lcf.h> |
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#include <stdbool.h> |
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#include <stdint.h> |
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#include "i8042.h" |
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/** |
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* @brief Handles keyboard interrupts (C implementation) |
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* |
| ... | ... | |
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* |
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* @return Return 0 upon success and non-zero otherwise |
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*/ |
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int(kbc_unsubscribe_int)(); |
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int(kbc_unsubscribe_int)(); |
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#endif /*_KEYBOARD_H */ |
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| lab3/lab3.c | ||
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#include <lcom/lcf.h> |
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#include <lcom/lab3.h> |
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#include <stdbool.h> |
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#include <stdint.h> |
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#include "keyboard.h" |
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int main(int argc, char *argv[]) {
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// sets the language of LCF messages (can be either EN-US or PT-PT) |
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lcf_set_language("EN-US");
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| ... | ... | |
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return 0; |
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} |
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extern uint8_t scan_reg; |
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extern uint8_t scan_code; |
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extern uint32_t cnt; |
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int(kbd_test_scan)() {
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int r, ipc_status; |
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uint8_t keyboard_irq, size, byte[2]; //size of scancode can be 2 byte long |
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uint8_t keyboard_irq, size, bytes[2]; //size of scancode can be 2 byte long
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message msg; |
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bool make=false; //to check if code is make or break |
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if(kbc_subscribe_int(keyboard_irq)==1){
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if(kbc_subscribe_int(&keyboard_irq)==1){
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printf("Error subscribing int\n");
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return 1; |
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} |
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while(scan_code!=ESC_BREAK){ //looping until status_reg is the breakcode of ESC key
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while(scan_code!=ESC_BREAK){ //looping until scann_code is the breakcode of ESC key
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if ((r = driver_receive(ANY, &msg, &ipc_status))==1){
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printf("driver_receive failed with: %d",r);
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continue; |
| ... | ... | |
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size=1; |
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} |
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if (scan_code & MAKE_CODE){ // 4 - Checks if code is make or break
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if (scan_code & MAKE_CODE){ //checks if code is make or break
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make = false; //break code |
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} |
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else {
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| ... | ... | |
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return 1; |
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} |
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kbd_print_no_sysinb(cnt); |
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return 0; |
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} |
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