鸿蒙硬件HI3861点灯

鸿蒙其他教程请看https://blog.csdn.net/qq_33259323/category_10520249.html

创建文件

BUILD.gn

static_library("mmled") {sources = ["mmled.c"]include_dirs = ["//domains/iot/link/ledlib","//base/iot_hardware/interfaces/kits/wifiiot_lite","//kernel/liteos_m/components/cmsis/2.0",]
}

mmled.c

#include "mmled.h"
#include <stdio.h>
#include <unistd.h>
#include "wifiiot_gpio.h"
#include "wifiiot_gpio_ex.h"
#include "cmsis_os2.h"// LED状态
enum LedState {LED_ON = 0,LED_OFF,LED_SPARK,
};enum LedState g_ledState = LED_SPARK;// LED初始化
void Led_Init(void){GpioInit();IoSetFunc(WIFI_IOT_IO_NAME_GPIO_9, WIFI_IOT_IO_FUNC_GPIO_9_GPIO);GpioSetDir(WIFI_IOT_IO_NAME_GPIO_9, WIFI_IOT_GPIO_DIR_OUT);
}static void *LedBTask(const char *arg){(void)arg;while (1) {switch (g_ledState) {case LED_ON:GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_9, 1);usleep(LED_INTERVAL_TIME_US);break;case LED_OFF:GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_9, 0);usleep(LED_INTERVAL_TIME_US);break;case LED_SPARK:GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_9, 0);usleep(LED_INTERVAL_TIME_US);GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_9, 1);usleep(LED_INTERVAL_TIME_US);break;default:usleep(LED_INTERVAL_TIME_US);break;}}return NULL;
}// LED模块初始化线程
void Start_Led_Thread(void){osThreadAttr_t ledattr;ledattr.name = "LedTask";ledattr.attr_bits = 0U;ledattr.cb_mem = NULL;ledattr.cb_size = 0U;ledattr.stack_mem = NULL;ledattr.stack_size = LED_TASK_STACK_SIZE;ledattr.priority = LED_TASK_PRIO;if (osThreadNew((osThreadFunc_t)LedBTask, NULL, &ledattr) == NULL) {printf("[LedExample] Falied to create LedTask!\n");}
}

mmled.c

#ifndef MMLED_H
#define MMLED_H#define LED_INTERVAL_TIME_US 3000000
#define LED_TASK_STACK_SIZE 512
#define LED_TASK_PRIO 25/*** LED初始化*/
void Led_Init(void);void Start_Led_Thread(void);//static void *LedBTask(const char *arg);#endif

这些弄完之后需要修改code-1.0\applications\sample\wifi-iot\app\BUILD.gn把刚才的mmled添加进去进行

import("//build/lite/config/component/lite_component.gni")lite_component("app") {features = ["my_first_app:myapp","//domains/iot/link/ledlib:mmled"   ##  需要把mmled添加进去]
}

在\code-1.0\applications\sample\wifi-iot\app\my_first_app\BUILD.gn

static_library("myapp") {sources = ["hello_world.c"]include_dirs = ["//utils/native/lite/include","//domains/iot/link/ledlib",     ## 添加ledlib]
}

在\code-1.0\applications\sample\wifi-iot\app\my_first_app\hello_world.c

#include <stdio.h>
#include "ohos_init.h"
#include "ohos_types.h"
#include "mmled.h"void HelloWorld(void)
{printf("[DEMO] Hello world.\n");Led_Init();Start_Led_Thread();
}SYS_RUN(HelloWorld);

然后就OK了

如果在过程中遇到什么问题可以来联系我B站

https://space.bilibili.com/309103931

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