Nigel/BarinkOS
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Re-enabled interrupts from keyboard, Enabled and configured the PIT to throw interrupts at a regular interval

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Nigel Barink
2021-12-20 21:53:57 +01:00
parent 23ede25ed6
commit 88cc1d75bb
10 changed files with 128 additions and 60 deletions
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37
src/kernel/idt/idt.cpp
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@ -1,4 +1,5 @@
#include "idt.h"
#include "../pit.h"
//#include "scancodes/set1.h"
IDT_entry idt_table[256];
@ -24,6 +25,8 @@ void irs_handler (registers regs) {
}
@ -32,36 +35,33 @@ void irs_handler (registers regs) {
void irq_handler (registers regs) {
if ( regs.int_no != 0) {
kterm_writestring("received interrupt!\n");
printf("(IRQ) Interrupt number: %d \n", regs.int_no);
}
if ( regs.int_no == 1 ){
switch (regs.int_no)
{
case 0:
pit_tick++;
break;
case 1:
// Keyboard interrupt !!
int scan;
/*register*/int i;
// Read scancode
scan = inb(0x60);
// Send ack message!
i = inb(0x61);
outb(0x61, i|0x80);
outb(0x61, i);
kterm_writestring("A key was pressed/released\n");
printf( "Scancode: %x\n", scan);
break;
}
default:
printf("Received INT: 0x%x\n", regs.int_no);
break;
}
outb(0x20, 0x20); // send end of interrupt to master
if ( regs.int_no > 8 && regs.int_no <= 15) {
@ -76,16 +76,13 @@ void irq_handler (registers regs) {
}
void init_idt(){
// Initialise the IDT pointer
idt_ptr.length = sizeof(IDT_entry) * 255;
idt_ptr.base = (uint32_t)&idt_table;
printf("Init IDT\n");
// TODO: Set everything to zero first
set_id_entry(0, (uint32_t) irs0 , 0x08, 0x8F);