summaryrefslogtreecommitdiff
path: root/cesar/test_general/ecos/src/mesbox.c
blob: f7f463f1c188f4a3c6dcbf18768f9b8065285b3d (plain)
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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
/* Cesar project {{{
 *
 * Copyright (C) 2008 Spidcom
 *
 * <<<Licence>>>
 *
 * }}} */
/**
 * \file    mesbox.c
 * \brief   « brief description »
 * \ingroup « module »
 *
 * « long description »
 */

#include <cyg/kernel/kapi.h>
#include <cyg/infra/diag.h>

#define THREAD_STACK_SIZE (20480 / sizeof(int))

int thread_a_stack[THREAD_STACK_SIZE];
cyg_handle_t thread_a_handle;
cyg_thread thread_a_obj;
int thread_b_stack[THREAD_STACK_SIZE];
cyg_handle_t thread_b_handle;
cyg_thread thread_b_obj;

cyg_mbox mbox;
cyg_handle_t mbox_handle;

char transfert_mess[] = "oh what a wonderful mailbox";

//
// Thread A.
//
void thread_a(cyg_addrword_t index)
{
    while (1)
    {
        // Delay for 5 seconds (10ms * 500ticks).
        cyg_thread_delay(500);

        // Send a message to Thread B.
        cyg_mbox_put(mbox_handle, (void *)transfert_mess);
    }
}

//
// Thread B.
//
void thread_b(cyg_addrword_t index)
{
   char *message;

    while (1)
    {
        // Wait for the message.
        message = (char*) cyg_mbox_get(mbox_handle);

        // Make sure we received the message before attempting
        // to process it.
        if ( message != NULL )
        {
            // Process the message.
            diag_printf("Message received : %s\n", message);
        }
    }
}

//
// Main.
//
void cyg_user_start(void)
{
  cyg_thread_create(12, thread_a, (cyg_addrword_t) 0,
		    "Thread A", &thread_a_stack, THREAD_STACK_SIZE,
		    &thread_a_handle, &thread_a_obj);
  cyg_thread_create(13, thread_b, (cyg_addrword_t) 0,
		    "Thread B", &thread_b_stack, THREAD_STACK_SIZE,
		    &thread_b_handle, &thread_b_obj);

  cyg_mbox_create(&mbox_handle, &mbox);

  cyg_thread_resume(thread_a_handle);
  cyg_thread_resume(thread_b_handle);

  diag_write_string("Starting Scheduler...\n");
  
  cyg_scheduler_start();
}