[经验]

【HarmonyOS HiSpark Wi-Fi IoT套件】鸿蒙HiSpark Wi-Fi IoT开发套件试用05（按键）

2020-11-2 15:35:26

1076

本帖最后由 l_xy 于 2020-11-2 18:47 编辑

提示：此案例为单主板案例，主板不要放到底板上。

按键点亮主板的板载LED灯的步骤如下：
1. 在applicationssamplewifi-iotapp下新建文件夹“key_demo”，在key_demo文件夹下新建BUILD.gn和key_demo.c 两个文件，具体目录结构如下：
.
└── applications
└── sample
      └── wifi-iot
         └── app
            │── key_demo
            │  │── BUILD.gn
            │  └── key_demo.c
            └── BUILD.gn

2. applicationssamplewifi-iotappkey_demo下的BUILD.gn代码如下：

static_library("key_demo") {
sources = [
"key_demo.c"
]
include_dirs = [
"//utils/native/lite/include",
"//kernel/liteos_m/components/cmsis/2.0",
"//base/iot_hardware/interfaces/kits/wifiiot_lite"
]
}

复制代码

3. applicationssamplewifi-iotappkey_demo下的key_demo.c代码如下：

#include
#include "stdio.h"
#include "ohos_init.h"
#include "cmsis_os2.h"
#include "wifiiot_gpio.h"
#include "wifiiot_gpio_ex.h"
#include
#include
#include
#include
static int volatile BtnPressed = 0;
static void OnButtonPressed(char* arg);
static void OnButtonReleased(char* arg);
static void OnButtonPressed(char* arg)
{
(void)arg;
printf("[Key_demo] OnButtonPressed()n");
BtnPressed = 1;
GpioRegisterIsrFunc(WIFI_IOT_IO_NAME_GPIO_5,WIFI_IOT_INT_TYPE_EDGE,WIFI_IOT_GPIO_EDGE_RISE_LEVEL_HIGH,OnButtonReleased, NULL);
}
static void OnButtonReleased(char* arg)
{
(void)arg;
printf("[Key_demo] OnButtonReleased()n");
BtnPressed = 0;
GpioRegisterIsrFunc(WIFI_IOT_IO_NAME_GPIO_5,WIFI_IOT_INT_TYPE_EDGE,WIFI_IOT_GPIO_EDGE_FALL_LEVEL_LOW,OnButtonPressed, NULL);
}
static void* Key_Task(const char* arg)
{
(void)arg;
while(1)
{
if( BtnPressed )
{
GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_9, 0);
}
else
{
GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_9, 1);
}
}
return NULL;
}
static void key_demo(void)
{
osThreadAttr_t attr = {0};
GpioInit();
//复用引脚为 GPIO
IoSetFunc(WIFI_IOT_IO_NAME_GPIO_9, WIFI_IOT_IO_FUNC_GPIO_9_GPIO);
//设置为输出
GpioSetDir(WIFI_IOT_IO_NAME_GPIO_9, WIFI_IOT_GPIO_DIR_OUT);
//复用引脚为 GPIO
IoSetFunc(WIFI_IOT_IO_NAME_GPIO_5, WIFI_IOT_IO_FUNC_GPIO_5_GPIO);
//设置为输入
GpioSetDir(WIFI_IOT_IO_NAME_GPIO_5, WIFI_IOT_GPIO_DIR_IN);
IoSetPull(WIFI_IOT_IO_NAME_GPIO_5, WIFI_IOT_IO_PULL_UP);
GpioRegisterIsrFunc(WIFI_IOT_IO_NAME_GPIO_5,WIFI_IOT_INT_TYPE_EDGE,WIFI_IOT_GPIO_EDGE_FALL_LEVEL_LOW,OnButtonPressed, NULL);
attr.name = "Key_Task";
attr.attr_bits = 0U;
attr.cb_mem = NULL;
attr.cb_size = 0U;
attr.stack_mem = NULL;
attr.stack_size = 1024;
attr.priority = osPriorityNormal;
if (osThreadNew((osThreadFunc_t)Key_Task, NULL, &attr) == NULL)
{
printf("[key_demo] Falied to create KedTask!n");
}
}
SYS_RUN(key_demo);