【HarmonyOS HiSpark Wi-Fi IoT 套件试用连载】第三篇 跑马灯

本文来源电子发烧友社区，作者：小水滴1016， 帖子地址：https://bbs.elecfans.com/jishu_2008655_1_1.html


弄了半天，VSCode中还是识别不了串口，只好放弃，采用Ubuntu中编译，Windows中使用HiBurn来烧写。

拿到开发板通常第一件事儿都是写个helloWorld的程序，点个灯
我也不例外，搞了个跑马灯。
代码如下：
led_demo.c

1. #include
2. #include
3. #include "ohos_init.h"
4. #include "cmsis_os2.h"
5. #include "wifiiot_gpio.h"
6. #include "wifiiot_gpio_ex.h"
8. #define LED_TASK_STACK_SIZE 512
9. #define LED_TASK_PRIO 25
11. enum LedState {
12. LED_ON = 0,
13. LED_OFF,
14. LED_SPARK,
15. };
16. static void *LedTask(const char *arg)
17. {
18. (void)arg;
19. while (1) {
20. GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_10, 1);
21. GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_11, 0);
22. GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_12, 0);
23. usleep(300000);
24. GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_10, 0);
25. GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_11, 0);
26. GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_12, 1);
27. usleep(300000);
28. GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_10, 0);
29. GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_11, 1);
30. GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_12, 0);
31. usleep(300000);
32. }
33. return NULL;
34. }
36. static void led_demo(void)
37. {
38. osThreadAttr_t attr;
39. GpioInit();
40. IoSetFunc(WIFI_IOT_IO_NAME_GPIO_10, WIFI_IOT_IO_FUNC_GPIO_10_GPIO);
41. IoSetFunc(WIFI_IOT_IO_NAME_GPIO_11, WIFI_IOT_IO_FUNC_GPIO_11_GPIO);
42. IoSetFunc(WIFI_IOT_IO_NAME_GPIO_12, WIFI_IOT_IO_FUNC_GPIO_12_GPIO);
43. GpioSetDir(WIFI_IOT_IO_NAME_GPIO_10, WIFI_IOT_GPIO_DIR_OUT);
44. GpioSetDir(WIFI_IOT_IO_NAME_GPIO_11, WIFI_IOT_GPIO_DIR_OUT);
45. GpioSetDir(WIFI_IOT_IO_NAME_GPIO_12, WIFI_IOT_GPIO_DIR_OUT);
47. attr.name = "LedTask";
48. attr.attr_bits = 0U;
49. attr.cb_mem = NULL;
50. attr.cb_size = 0U;
51. attr.stack_mem = NULL;
52. attr.stack_size = LED_TASK_STACK_SIZE;
53. attr.priority = LED_TASK_PRIO;
55. if (osThreadNew((osThreadFunc_t)LedTask, NULL, &attr) == NULL) {
56. printf("[LedExample] Falied to create LedTask!
57. ");
58. }
59. }
61. SYS_RUN(led_demo);

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led_demo文件夹中

BIULD.gn

1. # Copyright (c) 2020 Huawei Device Co., Ltd.
2. # Licensed under the Apache License, Version 2.0 (the "License");
3. # you may not use this file except in compliance with the License.
4. # You may obtain a copy of the License at
5. #
6. # http://www.apache.org/licenses/LICENSE-2.0
7. #
8. # Unless required by applicable law or agreed to in writing, software
9. # distributed under the License is distributed on an "AS IS" BASIS,
10. # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11. # See the License for the specific language governing permissions and
12. # limitations under the License.
14. static_library("led_demo") {
15. sources = [
16. "led_demo.c"
17. ]
19. include_dirs = [
20. "//utils/native/lite/include",
21. "//kernel/liteos_m/components/cmsis/2.0",
22. "//base/iot_hardware/interfaces/kits/wifiiot_lite",
23. ]
24. }

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同时，也要将app文件夹中的编译脚本文件BUILD.gn修改一下，在features中添加以下内容：
"led_demo:led_demo",

1. # Copyright (c) 2020 Huawei Device Co., Ltd.
2. # Licensed under the Apache License, Version 2.0 (the "License");
3. # you may not use this file except in compliance with the License.
4. # You may obtain a copy of the License at
5. #
6. # http://www.apache.org/licenses/LICENSE-2.0
7. #
8. # Unless required by applicable law or agreed to in writing, software
9. # distributed under the License is distributed on an "AS IS" BASIS,
10. # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11. # See the License for the specific language governing permissions and
12. # limitations under the License.
14. import("//build/lite/config/component/lite_component.gni")
16. lite_component("app") {
17. features = [
18. "startup",
19. "led_demo:led_demo",
20. ]
21. }

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添加完之后，返回CODE-1.0目录，在终端中输入以下命令：python build.py wifiiot
编译即可；
然后，返回Windows，用hiburn烧录即可。
第三篇完结，下一步，OLED，未完待续……




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