鸿蒙开发板Hi3861_通过GPIO9光敏电阻实验code-2.0-CANARY

鸿蒙开发板Hi3861_通过GPIO9光敏电阻实验code-2.0-CANARY

光敏电阻一个引脚接A9,另一引脚接GND

#include  
#include "ohos_init.h"
#include "cmsis_os2.h"
#include "iot_gpio.h"
#include "hi_io.h"
#include "iot_pwm.h"
#include "hi_pwm.h"
#include "hi_time.h"
#include "hi_adc.h"


static void adc_func(void *arg)
{
    (void) arg;
    unsigned short data=0;

    while (1)
    {
        /* code */
        if(hi_adc_read(HI_ADC_CHANNEL_4,&data,HI_ADC_EQU_MODEL_4,HI_ADC_CUR_BAIS_DEFAULT,0)==HI_ERR_SUCCESS)
        {
            printf("ADC_VALUE= %d\n",(unsigned int) data);
        }
   // hi_udelay(10);
        osDelay(100);
       data++;

    }
    
}



SYS_RUN(adc_func);

build.gn

static_library("adc_demo") {
    sources = [ "adc_demo1.c"]

    include_dirs = [
        
        "//third_party/cmsis/CMSIS/RTOS2/Include",
         "//utils/native/lite/include",
        "//kernel/liteos_m/components/cmsis/2.0",
        "//base/iot_hardware/peripheral/interfaces/kits",
        "//device/hisilicon/hispark_pegasus/sdk_liteos/include"
        ]
}

app/build.gn

# Copyright (c) 2020 Huawei Device 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("app") {
    features = [
        "adc_demo",
    ]
}

当遮住无光时，ADC_VALUE 400+ 感应到自然光时：ADC_VALUE 300+

 

参考：

https://harmonyos.51cto.com/posts/2273