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#include <cpu.h>
#include <cpu/irq.h>
#include <globals.h>
#include <graphics/lfb.h>
#include <symbols.h>
#include <sys/core.h>
#include <sys/schedule.h>
#include <tests/test.h>
#include <util/mutex.h>
#include <util/status.h>
#include <util/time.h>
#define CPS 1000
void handle_data(unsigned char);
static unsigned long counter = 0;
unsigned long 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);
// Handle the recieved data
// Ctrl+G to output scheduler debug info
if (data == 0x7) {
uart_scheduler();
uart_mutexes();
}
//// Ctrl+T to toggle timer
//else if(data == 0x14) {
// unsigned long timer_status;
// asm volatile("mrc p15, 0, %0, c14, c3, 1" : "=r"(timer_status));
// if(timer_status == 0) {
// cntfrq = read_cntfrq();
// write_cntv_tval(cntfrq/CPS);
// enablecntv();
// draw_cstring(0, 3, "TIMER", 0x00FF00);
// } else {
// disablecntv();
// draw_cstring(0, 3, "TIMER", 0xFF0000);
// }
//}
// Add task to handle the data
else {
add_thread(handle_data, (void*)data, 7);
return 1;
}
}
}
// Check if System Time Compare 0 Triggered the Interrupt
if (*(volatile unsigned long*)SYS_TIMER_CS & SYS_TIMER_SC_M0) {
volatile unsigned long* timer_cs = (volatile unsigned long*)SYS_TIMER_CS;
volatile unsigned long* timer_chi = (volatile unsigned long*)SYS_TIMER_CHI;
volatile unsigned long* nexttime = (volatile unsigned long*)SYS_TIMER_C0;
add_thread_without_duplicate(test_entry, 0, 2);
*nexttime = *timer_chi + 4000000;
*timer_cs = SYS_TIMER_SC_M0;
status();
return 1;
}
}
// Check if CNTV triggered the interrupt
else if (source & (1 << 3)) {
// Reset the counter
write_cntv_tval(cntfrq/CPS);
counter++;
if (counter % 0x6000 == 0)
counter = 0;
}
return 0;
}
unsigned long c_fiq_handler(void)
{
unsigned long source = load32(CORE0_FIQ_SOURCE);
if (source & (1 << 8)) {
// Check if System Time Compare 0 Triggered the Interrupt
if (*(volatile unsigned long*)SYS_TIMER_CS & SYS_TIMER_SC_M0) {
volatile unsigned long* timer_cs = (volatile unsigned long*)SYS_TIMER_CS;
volatile unsigned long* timer_chi = (volatile unsigned long*)SYS_TIMER_CHI;
volatile unsigned long* nexttime = (volatile unsigned long*)SYS_TIMER_C0;
add_thread_without_duplicate(test_entry, 0, 2);
*nexttime = *timer_chi + 4000000;
*timer_cs = SYS_TIMER_SC_M0;
return 1;
}
}
// Check if CNTV triggered the interrupt
else if (source & (1 << 3)) {
}
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);
}
// Draw it on the screen
{
draw_chex32(0, 9, data, 0xAA00FF);
}
}
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