1 /*----------------------------------------------------------------------------
2 * RL-ARM - RTX
3 *----------------------------------------------------------------------------
4 * Name: RTX_EX1.C
5 * Purpose: Your First RTX example program
6 *----------------------------------------------------------------------------
7 *
8 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
9 * All rights reserved.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions are met:
12 * - Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * - Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * - Neither the name of ARM nor the names of its contributors may be used
18 * to endorse or promote products derived from this software without
19 * specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 *---------------------------------------------------------------------------*/
33
34 #include "cmsis_os.h"
35
36 /* Forward reference */
37 void threadX (void const *argument);
38
39 /* Thread IDs */
40 osThreadId main_id;
41 osThreadId threadX_id;
42
43 /* Thread definitions */
44 osThreadDef(threadX, osPriorityNormal, 1, 0);
45
46 /*----------------------------------------------------------------------------
47 * Thread X
48 *---------------------------------------------------------------------------*/
49 void threadX (void const *argument) {
50 for (;;) {
51 /* Wait for completion of do-this */
52 osSignalWait(0x0004, osWaitForever); /* do-that */
53 /* Pause for 20 ms until signaling event to main thread */
54 osDelay(20);
55 /* Indicate to main thread completion of do-that */
56 osSignalSet(main_id, 0x0004);
57 }
58 }
59
60 /*----------------------------------------------------------------------------
61 * Main Thread
62 *---------------------------------------------------------------------------*/
63 int main (void) {
64
65 /* Get main thread ID */
66 main_id = osThreadGetId();
67 /* Create thread X */
68 threadX_id = osThreadCreate(osThread(threadX), NULL);
69 for (;;) { /* do-this */
70 /* Indicate to thread X completion of do-this */
71 osSignalSet(threadX_id, 0x0004);
72 /* Wait for completion of do-that */
73 osSignalWait(0x0004, osWaitForever);
74 /* Wait now for 50 ms */
75 osDelay(50);
76 }
77 }
78
79 /*----------------------------------------------------------------------------
80 * end of file
81 *---------------------------------------------------------------------------*/
