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本文來(lái)源電子發(fā)燒友社區(qū)，作者：soon順soon，帖子地址：https://bbs.elecfans.com/jishu_2023113_1_1.html

分享一個(gè)比較簡(jiǎn)單的Demo
硬件模塊：
HiSpark_WiFi_IoT_3861_CH340G_主板
HiSpark_WiFi_IoT_智能(炫彩)燈板

實(shí)現(xiàn)功能：
1.模擬紅外人體感應(yīng)燈，人到亮起紅燈，人走紅燈滅。
2.光敏電阻，暗環(huán)境亮綠燈，亮環(huán)境滅燈。

代碼分享如下
1.在 applicationssamplewifi-iotappBUILD.gn 修改如下

import("http://build/lite/config/component/lite_component.gni")
lite_component("app") {
features = [
"startup",
"sensor_light:sensor_light",
]
}

復(fù)制代碼

2.新建applicationssamplewifi-iotappsensor_light 目錄并添加以下兩個(gè)文件
applicationssamplewifi-iotappsensor_lightBUILD.gn
applicationssamplewifi-iotappsensor_lightsensor_light.c

3.applicationssamplewifi-iotappsensor_lightBUILD.gn修改如下

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

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4.applicationssamplewifi-iotappsensor_lightsensor_light.c 修改如下

#include
#include
#include "ohos_init.h"
#include "cmsis_os2.h"
#include "wifiiot_gpio.h"
#include "wifiiot_gpio_ex.h"
#include "wifiiot_adc.h"
#include "wifiiot_errno.h"
static void SensorLightTask(void *arg)
{
(void)arg;
//人體感應(yīng)ADC 值
unsigned short humandata = 0;
//光敏電阻ADC值
unsigned short lightdata = 0;
while(1){
if (AdcRead(WIFI_IOT_ADC_CHANNEL_3, &humandata, WIFI_IOT_ADC_EQU_MODEL_4, WIFI_IOT_ADC_CUR_BAIS_DEFAULT, 0)
== WIFI_IOT_SUCCESS) {
printf("[SensorLight] humandata =%dn",humandata);
}
if (AdcRead(WIFI_IOT_ADC_CHANNEL_4, &lightdata, WIFI_IOT_ADC_EQU_MODEL_4, WIFI_IOT_ADC_CUR_BAIS_DEFAULT, 0)
== WIFI_IOT_SUCCESS) {
printf("[SensorLight] lightdata =%dn",lightdata);
}
//從串口log中來(lái)看ADC值感應(yīng)到是18xx，沒有感應(yīng)到是12x，所以這里用500做一個(gè)閾值
if(humandata > 500){
GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_10, WIFI_IOT_GPIO_VALUE1);//R on
}else{
GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_10, WIFI_IOT_GPIO_VALUE0);//R off
}
if(lightdata > 500){
GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_11, WIFI_IOT_GPIO_VALUE1);//G on
}else{
GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_11, WIFI_IOT_GPIO_VALUE0);//G off
}
usleep(10000);
}
}
static void SensorLight(void)
{
osThreadAttr_t attr;
GpioInit();
//RLED init
IoSetFunc(WIFI_IOT_IO_NAME_GPIO_10, WIFI_IOT_IO_FUNC_GPIO_10_GPIO);
GpioSetDir(WIFI_IOT_IO_NAME_GPIO_10, WIFI_IOT_GPIO_DIR_OUT);
//GLED init
IoSetFunc(WIFI_IOT_IO_NAME_GPIO_11, WIFI_IOT_IO_FUNC_GPIO_11_GPIO);
GpioSetDir(WIFI_IOT_IO_NAME_GPIO_11, WIFI_IOT_GPIO_DIR_OUT);
//BLED init
IoSetFunc(WIFI_IOT_IO_NAME_GPIO_12, WIFI_IOT_IO_FUNC_GPIO_12_GPIO);
GpioSetDir(WIFI_IOT_IO_NAME_GPIO_12, WIFI_IOT_GPIO_DIR_OUT);
attr.name = "SensorLightTask";
attr.attr_bits = 0U;
attr.cb_mem = NULL;
attr.cb_size = 0U;
attr.stack_mem = NULL;
attr.stack_size = 4096;
attr.priority = osPriorityNormal;
if (osThreadNew(SensorLightTask, NULL, &attr) == NULL) {
printf("[SensorLight] Falied to create SensorLightTask!n");
}
}
SYS_RUN(SensorLight);

復(fù)制代碼

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