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#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <wiringPi.h>
#include <wiringPiI2C.h>
#include <QMessageBox>
#include <stdio.h>
#include <linux/i2c-dev.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#define EinAMP 1 //gpio 1
#define Last 4 //gpio 2
#define StepUp 5 // Step Up Einschalten
int fd;
// Note PCF8591 defaults to 0x48!
int asd_address = 0x48;
unsigned int val;
unsigned char writeBuf[3];
unsigned char readBuf[2];
float myfloat;
const float Schwelle0 = 1.13, Schwelle1 = 1.785, Schwelle2 = 2.5;
const float HYSTERESE =0.1;
int s0Flag = 0, s1Flag = 0, s2Flag = 0;
int flag=0;
const float VPS = 4.096 / 32768.0; // volts per step
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
QPalette Pal;
Pal.setColor(QPalette::Normal, QPalette::WindowText, Qt::green);
Pal.setColor(QPalette::Normal, QPalette::Window, Qt::blue);
ui->lcdNumber->setAutoFillBackground(true);
ui->lcdNumber->setPalette(Pal);
ui->lcdNumber->display("1234");
ui->label->setFont(QFont("Helvetica", 14, QFont::Bold, true));
Pal.setColor(QPalette::Normal, QPalette::WindowText, Qt::red);
ui->label->setText("abcde");
ui->label->setPalette(Pal);
if (wiringPiSetup () < 0) // WiringPi GPIO numbers
{ // ACHTUNG: QwtTest root privileges
QMessageBox msgBox;
msgBox.setText(QApplication::translate("Main", "Fehler mit WiringPiSetupGpio"));
msgBox.exec();
}
pinMode(EinAMP, OUTPUT);
pinMode(Last, OUTPUT);
pinMode(StepUp, OUTPUT);
fd = wiringPiI2CSetup(asd_address);
if (fd < 0)
{
QMessageBox msgBox;
msgBox.setText(QApplication::translate("Main", "Fehler mit wiringPiI2CSetup(Adr)"));
msgBox.exec();
}
// set config register and start conversion
// AIN0 and GND, 4.096v, 128s/s
// Refer to page 19 area of spec sheet
writeBuf[1] = 0b11000010; // 0xC2 single shot off
// bit 15 flag bit for single shot not used here
// Bits 14-12 input selection:
// 100 ANC0; 101 ANC1; 110 ANC2; 111 ANC3
// Bits 11-9 Amp gain. Default to 010 here 001 P19
// Bit 8 Operational mode of the ADS1115.
// 0 : Continuous conversion mode
// 1 : Power-down single-shot mode (default)
writeBuf[0] = 0b10000101; // bits 7-0 0x85
// Bits 7-5 data rate default to 100 for 128SPS
// Bits 4-0 comparator functions see spec sheet.
// begin conversion
val = writeBuf[0] << 8 | writeBuf[1]; // ACHTUNG: zuerst wird LOW-Byte, dann HIGH-Byte von val gesendet
wiringPiI2CWriteReg16(fd,1, (int)val);
timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(Zeitgeber()));
timer->start(500);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::Zeitgeber()
{
char hstring [10];
// read conversion register
val= wiringPiI2CReadReg16(fd,0); // ACHTUNG: zuerst wird LOW-Byte, dann HIGH-Byte fuer val emphangen
val = ((((val & 0x00FF)<<8) | ((val & 0xFF00)>>8))); // Byte-swapping ist notwendig!
myfloat = val * VPS; // convert to voltage
sprintf (hstring,"%4.2f", myfloat);
ui->lcdNumber->display(hstring);
if(flag)
{
return;
}
if ((!s0Flag && myfloat <= Schwelle0) || (s0Flag && myfloat <= Schwelle0 - HYSTERESE))
//if (myfloat <= Schwelle0) || schwelle für 0 bis 1.13 Volt
{
s0Flag = 0;
s1Flag = 0;
s2Flag = 0;
ui->label->setText("AUS");
digitalWrite(EinAMP, LOW);
digitalWrite(Last, LOW);
digitalWrite(StepUp, LOW);
return;
}
s0Flag = 1;
if ((!s1Flag && myfloat <= Schwelle1) || (s1Flag && myfloat <= Schwelle1 - HYSTERESE))
{
s1Flag = 0;
s2Flag = 0;
ui->label->setText("1 AMP");
digitalWrite(EinAMP, HIGH);
digitalWrite(Last, HIGH);
digitalWrite(StepUp, HIGH);
return;
}
s1Flag = 1;
if((!s2Flag && myfloat <= Schwelle2) || (s2Flag && myfloat <= Schwelle2 - HYSTERESE))
{
s2Flag = 0;
ui->label->setText("4 AMP");
digitalWrite(EinAMP, LOW);
digitalWrite(Last, HIGH);
digitalWrite(StepUp, HIGH);
return;
}
s2Flag = 1;
ui->label->setText("AUS");
digitalWrite(EinAMP, LOW);
digitalWrite(Last, LOW);
digitalWrite(StepUp, LOW);
}
void MainWindow::on_pushButton_clicked() // AUS Button
{
ui->label->setText("AUS");
digitalWrite(EinAMP, LOW);
digitalWrite(Last, LOW);
digitalWrite(StepUp, LOW);
flag=1;
}
void MainWindow::on_pushButton_2_clicked() //Ein button
{
flag=0;
}
void MainWindow::on_lcdNumber_overflow()
{
}
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