Hi3861 OpenHarmony嵌入式应用入门--点灯
本篇实现对gpio的控制,通过控制输出进行gpio的点灯操作。
硬件
我们来操作IO2,控制绿色的灯。
软件
GPIO API
API名称 | 说明 |
hi_u32 hi_gpio_deinit(hi_void); | GPIO模块初始化 |
hi_u32 hi_io_set_pull(hi_io_name id, hi_io_pull val); | 设置某个IO上下拉功能。 |
hi_u32 hi_gpio_set_dir(hi_gpio_idx id, hi_gpio_dir dir); | 设置GPIO引脚方向,id参数用于指定引脚,dir参数用于指定输入或输出 |
hi_u32 hi_gpio_set_ouput_val(hi_gpio_idx id, hi_gpio_value val); | 设置GPIO引脚的输出状态,id参数用于指定引脚,val参数用于指定高电平或低电平 |
hi_u32 hi_io_set_func(hi_io_name id, hi_u8 val); | 设置引脚功能,id参数用于指定引脚,val用于指定引脚功能 |
hi_u32 hi_gpio_deinit(hi_void); | 解除GPIO模块初始化 |
修改D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\BUILD.gn文件,让工程编译led代码
# Copyright (c) 2023 Beijing HuaQing YuanJian Education Technology Co., Ltd # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import("//build/lite/config/component/lite_component.gni") lite_component("demo") { features = [ "base_01_led:base_led_example", ] }
创建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\base_01_led文件夹
文件夹中创建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\base_01_led\base_led_example.c文件D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\base_01_led\BUILD.gn文件
# Copyright (c) 2023 Beijing HuaQing YuanJian Education Technology Co., Ltd # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. static_library("base_led_example") { sources = [ "base_led_example.c", ] include_dirs = [ "//utils/native/lite/include", "//kernel/liteos_m/kal/cmsis", "//base/iot_hardware/peripheral/interfaces/kits", "//vendor/hqyj/fs_hi3861/common/bsp/include" ] }
/* * Copyright (c) 2023 Beijing HuaQing YuanJian Education Technology Co., Ltd * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include #include #include "cmsis_os2.h" #include "hi_gpio.h" #include "hi_io.h" #include "ohos_init.h" #define LED HI_IO_NAME_GPIO_2 // 开发板三色灯其中一个引脚 osThreadId_t Task1_ID = 0; // 任务1 ID hi_gpio_value val, val_last; // GPIO的状态值 #define TASK_STACK_SIZE 1024 #define TASK_DELAY_TIME (1000 * 1000) /** * @description: 任务1 * @param {*} * @return {*} */ void Task1(void) { printf("enter Task 1.......\r\n"); hi_gpio_init(); // GPIO初始化 hi_io_set_pull(LED, HI_IO_PULL_DOWN); // 设置GPIO下拉,保证上电时为灭灯状态 hi_io_set_func(LED, HI_IO_FUNC_GPIO_2_GPIO); // 设置IO2为GPIO功能 hi_gpio_set_dir(LED, HI_GPIO_DIR_OUT); // 设置GPIO为输入模式 while (1) { hi_gpio_set_ouput_val(LED, HI_GPIO_VALUE0); // 设置GPIO引脚为低电平 usleep(TASK_DELAY_TIME); // 1s sleep hi_gpio_set_ouput_val(LED, HI_GPIO_VALUE1); // 设置GPIO引脚为高电平 usleep(TASK_DELAY_TIME); // 1s sleep } } /** * @description: 初始化并创建任务 * @param {*} * @return {*} */ static void base_led_demo(void) { printf("[demo] Enter base_led_demo()!\r\n"); osThreadAttr_t taskOptions; taskOptions.name = "Task1"; // 任务的名字 taskOptions.attr_bits = 0; // 属性位 taskOptions.cb_mem = NULL; // 堆空间地址 taskOptions.cb_size = 0; // 堆空间大小 taskOptions.stack_mem = NULL; // 栈空间地址 taskOptions.stack_size = TASK_STACK_SIZE; // 栈空间大小 单位:字节 taskOptions.priority = osPriorityNormal; // 任务的优先级:wq Task1_ID = osThreadNew((osThreadFunc_t)Task1, NULL, &taskOptions); // 创建任务1 if (Task1_ID != NULL) { printf("ID = %d, Create Task1_ID is OK!\r\n", Task1_ID); } } SYS_RUN(base_led_demo);
目录结构
│ config.json │ ├─common │ └─bsp │ ├─include │ └─src ├─demo │ │ BUILD.gn │ │ │ ├─base_00_helloworld │ │ base_helloworld_example.c │ │ BUILD.gn │ │ │ └─base_01_led │ base_led_example.c │ BUILD.gn │ └─doc │ HarmonyOS开发板实验指导书 v2.1.pdf │ 华清远见 FS_Hi3861开发指导.md │ 华清远见 FS_Hi3861新手入门手册.md │ ├─board │ FS-Hi3861-V4.2.pdf │ FS-Hi3861QDB-V3.2.pdf │ hi-12f_kit_v1.1.0A7E6BCB9%A6-20211025.pdf │ hi-12f_v1.1.2-A7E6BCB9%A6-20211202.pdf │ nodemcu-hi-07s_12f-kit_v1.1-20210913.pdf │ RTplay2.01_2024-06-14.pdf │ └─figures
使用build
效果就是LED间隔1秒闪烁。