1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
#include <stddef.h>
#include <stdio.h>
#include <avr/pgmspace.h>
#include <avr/interrupt.h>
#include "task/task.h"
#include "task/sched.h"
#include "bug/panic.h"
#include "bug/debug.h"
#include "mcu/task/context.h"
#include "tshield/tshield.h"
#define WAIT_CYCLES(cycles) for (volatile unsigned long i = 0; i < cycles; ++i) {}
struct list_head frozen = LIST_HEAD_INIT(frozen);
void freeze() __attribute__ ( ( naked ) );
void freeze() {
context_save();
sleep_queue(&frozen);
schedule();
context_restore();
}
void blink( char id) {
while(1) {
debug_led(id - 1,1);
WAIT_CYCLES((long) 30000);
debug_led(id - 1,0);
WAIT_CYCLES((long) 30000);
}
}
DECLARE_TASK(task1, DEFAULT_STACK_SIZE, blink, 1);
DECLARE_TASK(task2, DEFAULT_STACK_SIZE, blink, 2);
DECLARE_TASK(task3, DEFAULT_STACK_SIZE, blink, 3);
DECLARE_TASK(task4, DEFAULT_STACK_SIZE, blink, 4);
int main(int argc, char *argv[]) {
cli();
tshield_init();
spawn(&task1);
spawn(&task2);
spawn(&task3);
spawn(&task4);
sei();
clock_init(10, schedule);
clock_start();
sched_init();
panic(); //should never reach here
while(1){}
}
|