1 /*
2 * Copyright (c) 2022 HiSilicon (Shanghai) Technologies CO., LIMITED.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <stdio.h>
17 #include <unistd.h>
18
19 #include "ohos_init.h"
20 #include "cmsis_os2.h"
21 #include "iot_gpio.h"
22
23 #define LED_INTERVAL_TIME_US 300000
24 #define LED_TASK_STACK_SIZE 512
25 #define LED_TASK_PRIO 25
26 #define LED_TEST_GPIO 9 // for hispark_pegasus
27
28 static long long g_iState = 0;
29
30 enum LedState {
31 LED_ON = 0,
32 LED_OFF,
33 LED_SPARK,
34 };
35
36 enum LedState g_ledState = LED_SPARK;
37
LedTask(const char *arg)38 static void *LedTask(const char *arg)
39 {
40 (void)arg;
41 while (1) {
42 switch (g_ledState) {
43 case LED_ON:
44 IoTGpioSetOutputVal(LED_TEST_GPIO, 1);
45 usleep(LED_INTERVAL_TIME_US);
46 g_iState++;
47 break;
48 case LED_OFF:
49 IoTGpioSetOutputVal(LED_TEST_GPIO, 0);
50 usleep(LED_INTERVAL_TIME_US);
51 g_iState++;
52 break;
53 case LED_SPARK:
54 IoTGpioSetOutputVal(LED_TEST_GPIO, 0);
55 usleep(LED_INTERVAL_TIME_US);
56 IoTGpioSetOutputVal(LED_TEST_GPIO, 1);
57 usleep(LED_INTERVAL_TIME_US);
58 g_iState++;
59 break;
60 default:
61 usleep(LED_INTERVAL_TIME_US);
62 break;
63 }
64 if (g_iState == 0xffffffff) {
65 g_iState = 0;
66 break;
67 }
68 }
69 return NULL;
70 }
71
LedExampleEntry(void)72 static void LedExampleEntry(void)
73 {
74 osThreadAttr_t attr;
75
76 IoTGpioInit(LED_TEST_GPIO);
77 IoTGpioSetDir(LED_TEST_GPIO, IOT_GPIO_DIR_OUT);
78
79 attr.name = "LedTask";
80 attr.attr_bits = 0U;
81 attr.cb_mem = NULL;
82 attr.cb_size = 0U;
83 attr.stack_mem = NULL;
84 attr.stack_size = LED_TASK_STACK_SIZE;
85 attr.priority = LED_TASK_PRIO;
86
87 if (osThreadNew((osThreadFunc_t)LedTask, NULL, &attr) == NULL) {
88 printf("[LedExample] Failed to create LedTask!\n");
89 }
90 }
91
92 SYS_RUN(LedExampleEntry);
93