1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * Description: Provide a task example.
32 */
33
34 #include "task_demo.h"
35 #include "stdio.h"
36 #include "los_task.h"
37 #include "utils_file.h"
38
39 #define TASK1_PRIORITY 6
40 #define TASK2_PRIORITY 7
41
TaskSampleEntry2(VOID)42 VOID TaskSampleEntry2(VOID)
43 {
44 while (1) {
45 #if 1
46 UINT64 cycle = LOS_SysCycleGet();
47 UINT64 nowNsec = (cycle / OS_SYS_CLOCK) * OS_SYS_NS_PER_SECOND +
48 (cycle % OS_SYS_CLOCK) * OS_SYS_NS_PER_SECOND / OS_SYS_CLOCK;
49
50 UINT32 tv_sec = nowNsec / OS_SYS_NS_PER_SECOND;
51 UINT32 tv_nsec = nowNsec % OS_SYS_NS_PER_SECOND;
52 printf("TaskSampleEntry2 running... tv_sec %d, tv_nsec %d\n", tv_sec, tv_nsec);
53 (VOID)LOS_TaskDelay(500); // 500:2000 millisecond
54 #endif
55 }
56 }
57
TaskSampleEntry1(VOID)58 VOID TaskSampleEntry1(VOID)
59 {
60 while (1) {
61 printf("TaskSampleEntry1 running...\n");
62 (VOID)LOS_TaskDelay(400); // 400:2000 millisecond
63 }
64 }
65
TaskSample(VOID)66 VOID TaskSample(VOID)
67 {
68 UINT32 ret;
69 UINT32 taskID1;
70 UINT32 taskID2;
71 TSK_INIT_PARAM_S stTask = {0};
72
73 printf("TaskSample: Task1 create start...\n");
74 stTask.pfnTaskEntry = (TSK_ENTRY_FUNC)TaskSampleEntry1;
75 stTask.uwStackSize = LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE;
76 stTask.pcName = "TaskSampleEntry1";
77 stTask.usTaskPrio = TASK1_PRIORITY;
78 ret = LOS_TaskCreate(&taskID1, &stTask);
79 if (ret != LOS_OK) {
80 printf("Task1 create failed\n");
81 }
82
83 printf("TaskSample: Task2 create start...\n");
84 stTask.pfnTaskEntry = (TSK_ENTRY_FUNC)TaskSampleEntry2;
85 stTask.uwStackSize = LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE;
86 stTask.pcName = "TaskSampleEntry2";
87 stTask.usTaskPrio = TASK1_PRIORITY;
88 ret = LOS_TaskCreate(&taskID2, &stTask);
89 if (ret != LOS_OK) {
90 printf("Task2 create failed\n");
91 }
92 }
93
RunTaskSample(VOID)94 VOID RunTaskSample(VOID)
95 {
96 UINT32 ret;
97 ret = LOS_KernelInit();
98 if (ret == LOS_OK) {
99 TaskSample();
100 (VOID)LOS_Start();
101 }
102 }