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#include <cpu.h>
#include <cpu/irq.h>
#include <globals.h>
#include <graphics/drawer.h>
#include <symbols.h>
#include <sys/core.h>
#include <sys/schedule.h>
#include <sys/timer.h>
#include <tests/test.h>
#include <util/mutex.h>
#include <util/time.h>
void handle_data(unsigned char);
void c_irq_handler(void)
{
unsigned long source = load32(CORE0_IRQ_SOURCE);
// Check if GPU Interrupt
if (source & (1 << 8)) {
// Check if UART Interrupt
if(load32(IRQ_PENDING2) & (1 << 25)) {
// Check if UART Interrupt is Masked
if(load32(UART0_MIS) & (1<<4)) {
// Get the UART data
unsigned long data = load32(UART0_DR);
// Draw it on the screen
{
unsigned int x = g_Drawer.x;
unsigned int y = g_Drawer.y;
g_Drawer.x = 0;
g_Drawer.y = 9;
write_chex32(&g_Drawer, data, 0xAA00FF);
g_Drawer.x = x;
g_Drawer.y = y;
}
// Handle the recieved data
// Ctrl+T to toggle timer
if(data == 0x14) {
unsigned long timer_status;
asm volatile("mrc p15, 0, %0, c14, c3, 1" : "=r"(timer_status));
unsigned int x = g_Drawer.x;
unsigned int y = g_Drawer.y;
g_Drawer.x = 0;
g_Drawer.y = 3;
if(timer_status == 0) {
cntfrq = read_cntfrq();
write_cntv_tval(cntfrq/CPS);
enablecntv();
write_cstring(&g_Drawer, "TIMER", 0x00FF00);
write_string(&g_Drawer, ": ");
} else {
disablecntv();
write_cstring(&g_Drawer, "TIMER", 0xFF0000);
write_string(&g_Drawer, ": ");
}
g_Drawer.x = x;
g_Drawer.y = y;
}
// Add task to handle the data
else {
add_thread(handle_data, (void*)data, 1);
}
return;
}
}
// Check if System Time Compare 0 Triggered the Interrupt
else if (*(unsigned long*)SYS_TIMER_CS == SYS_TIMER_SC_M0) {
volatile unsigned long* timer_cs = (unsigned long*)SYS_TIMER_CS;
volatile unsigned long* timer_chi = (unsigned long*)SYS_TIMER_CHI;
volatile unsigned long* nexttime = (unsigned long*)SYS_TIMER_C0;
*timer_cs = SYS_TIMER_SC_M0;
*nexttime = *timer_chi + 60000000;
}
}
// Check if CNTV triggered the interrupt
else if (source & (1 << 3)) {
c_timer();
return;
}
return;
}
static unsigned long counter = 0;
unsigned long c_fiq_handler(void)
{
unsigned long source = load32(CORE0_FIQ_SOURCE);
// Check if CNTV triggered the interrupt
if (source & (1 << 3)) {
c_timer();
counter++;
if (counter % 0x6000 == 0) {
counter = 0;
}
if (counter % 0x30 == 0) {
return 1;
}
return 0;
}
return 0;
}
void handle_data(unsigned char data)
{
// Newline Case
if (data == 0x0D) {
// Backspace Case
} else if (data == 0x08 || data == 0x7F) {
} else if (data == 0x61) {
add_thread(uart_scheduler, 0, 2);
} else if (data == 0x62) {
add_thread(test_entry, 0, 2);
}
}
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