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76 lines
1.5 KiB
76 lines
1.5 KiB
7 months ago
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/******************************************************************
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Copyright © Deng Zhimao Co., Ltd. 1990-2030. All rights reserved.
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* @projectName aflex
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* @brief adc.cpp
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* @author Deng Zhimao
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* @email 1252699831@qq.com
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* @date 2020-07-31
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*******************************************************************/
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#include "adc.h"
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <QDebug>
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using namespace std;
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Adc::Adc(QObject *parent) : QObject (parent)
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{
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timer = new QTimer();
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connect(timer,SIGNAL(timeout()),this,SLOT(getAdcData()));
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}
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Adc::~Adc()
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{
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}
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QString Adc::readADC()
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{
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char const *filename = "/sys/devices/platform/soc/48003000.adc/48003000.adc:adc@0/iio:device0/in_voltage19_raw";
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int err = 0;
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int fd;
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char buf[10];
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fd = open(filename, O_RDWR);
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if(fd < 0){
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close(fd);
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setCapture(0);
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return "open file error!";
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}
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err = read(fd, buf, sizeof(buf));
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if (err < 0){
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close(fd);
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return "read data error!";
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}
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close(fd);
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QString adcValue = buf;
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QStringList list = adcValue.split("\n");
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return list[0];
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}
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QString Adc::adcData()
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{
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return adcdata;
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}
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void Adc::getAdcData()
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{
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adcdata = readADC();
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double temp_data = adcdata.toDouble() * 0.050354003;
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adcdata = QString::number(temp_data,'f',1);
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emit adcDataChanged();
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}
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void Adc::setCapture(bool str)
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{
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if(str)
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timer->start(500);
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else
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timer->stop();
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}
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