rpi4-osdev/part14-spi-ethernet/kernel/irq.c
Adam Greenwood-Byrne dfc89a4449 Updating docs
2021-11-07 19:29:45 +00:00

27 lines
526 B
C

#include "kernel.h"
void enable_interrupt_controller() {
REGS_IRQ->irq0_enable_0 = SYS_TIMER_IRQ_1 | SYS_TIMER_IRQ_3;
}
void disable_interrupt_controller() {
REGS_IRQ->irq0_enable_0 = 0;
}
void handle_irq() {
unsigned int irq = REGS_IRQ->irq0_pending_0;
while(irq) {
if (irq & SYS_TIMER_IRQ_1) {
irq &= ~SYS_TIMER_IRQ_1;
handle_timer_1();
}
if (irq & SYS_TIMER_IRQ_3) {
irq &= ~SYS_TIMER_IRQ_3;
handle_timer_3();
}
}
}