树莓派3B Qt 使用GIOP 18 控制继电器开关

#include "widget.h" #include "ui_widget.h" #include <wiringPi.h> Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); wiringPiSetup(); pinMode(1,OUTPUT); mTimer = new QTimer(this); connect(mTimer,&QTimer::timeout,this,&Widget::slot_setlabel); } Widget::~Widget() { delete ui; } static int temp = 1; static bool flag = true; void Widget::on_pushButton_clicked() { if(flag) { ui->pushButton->setText("Stop"); mTimer->start(100); flag = false; } else { flag = true; mTimer->stop(); ui->pushButton->setText("Start"); } } static int currteme = 0; void Widget::slot_setlabel() { if(currteme == 0) { digitalWrite(1,HIGH); } if(currteme == 100) { digitalWrite(1,LOW); ui->label->setText(QString("count:%1").arg(temp)); temp ++; } currteme++; if(currteme == 300) { currteme = 0; } }