#include <stddef.h>
#include <stdio.h>
#include <avr/pgmspace.h>
#include <avr/interrupt.h>
#include "bug/panic.h"
#include "bug/debug.h"
#include "task/task.h"
#include "task/sched.h"
#include "task/lock.h"
#include "task/idle.h"
#include "time/clock.h"
#include "io/io.h"
#include "mcu/io/usart.h"
#include "tshield/tshield.h"
#define IN_LENGTH 64
#define WAIT_CYCLES(cycles) for (volatile unsigned long i = 0; i < cycles; ++i) {}
void writer() {
char* buffer = "hello world";
size_t length = 11;
while(1) {
debug_led(1, 0);
WAIT_CYCLES(300000);
debug_led(1, 1);
write(&usart0, buffer, length);
}
}
void reader() {
char in;
while(1) {
debug_led(2, 0);
debug_led(3, 0);
if (read(&usart0, &in, 1) >= 0) {
debug_led(2, 1);
} else {
debug_led(3, 1);
WAIT_CYCLES(30000);
}
}
}
DECLARE_TASK(task_idle, IDLE_STACK_SIZE, idle_entry, 0);
DECLARE_TASK(task1, DEFAULT_STACK_SIZE, writer, 1);
DECLARE_TASK(task2, DEFAULT_STACK_SIZE, reader, 2);
int main(int argc, char *argv[]) {
cli();
tshield_init();
open(&usart0);
ioctl(&usart0, IOCTL_SET_BAUD, 115200);
spawn_idle(&task_idle);
spawn(&task1);
spawn(&task2);
sei();
clock_init(10, schedule);
clock_start();
sched_init();
panic(); //should never reach here
while(1){}
}