mainwindow.cpp
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#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QTableWidgetItem>
#include "tablevalue.h"
typedef struct {
int header;
char body[];
} STRUCT_PACK packet_t;
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
sock = new QUdpSocket(this);
if (!sock->bind(4000))
exit(EXIT_FAILURE);
connect(sock, SIGNAL(readyRead()), this, SLOT(readPendingDatagrams()));
ui->controlTable->setRowCount(sizeof(oven_control_t) / sizeof(U16));
ui->controlTable->setColumnCount(3);
ui->controlTable->setHorizontalHeaderLabels(QString("Address,Value,Description").split(","));
for (int row = 0; row < ui->controlTable->rowCount(); row++)
{
ui->controlTable->setItem(row, 0, new QTableWidgetItem(QString("").sprintf("0x%04X", row)));
TableValue *item = new TableValue;
item->setText("0x0000");
ui->controlTable->setCellWidget(row, 1, item);
}
ui->stateTable->setRowCount(sizeof(oven_state_t) / sizeof(U16));
ui->stateTable->setColumnCount(3);
ui->stateTable->setHorizontalHeaderLabels(QString("Address,Value,Description").split(","));
for (int row = 0; row < ui->stateTable->rowCount(); row++)
{
ui->stateTable->setItem(row, 0, new QTableWidgetItem(QString().sprintf("0x%04X", row)));
TableValue *item = new TableValue;
item->setText("0x0000");
ui->stateTable->setCellWidget(row, 1, item);
}
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::readPendingDatagrams()
{
while (sock->hasPendingDatagrams()) {
QByteArray datagram;
datagram.resize(sock->pendingDatagramSize());
QHostAddress sender;
quint16 senderPort;
sock->readDatagram(datagram.data(), datagram.size(), &sender, &senderPort);
processDatagram(datagram);
}
}
void MainWindow::processDatagram(QByteArray &datagram)
{
packet_t *packet = (packet_t *) datagram.data();
switch (packet->header)
{
case HDR_OVEN_CONTROL:
processControl((oven_control_t *) packet->body);
break;
case HDR_OVEN_STATE:
processState((oven_state_t *) packet->body);
break;
case HDR_ERROR_CODE:
break;
}
}
void MainWindow::processControl(oven_control_t *control)
{
if (memcmp(&this->control, control, sizeof(this->control)))
updateControl(control);
}
void MainWindow::processState(oven_state_t *state)
{
if (memcmp(&this->state, state, sizeof(this->state)))
updateState(state);
}
void MainWindow::updateControl(oven_control_t *control)
{
U16 *base = (U16 *) &this->control;
U16 *operand = (U16 *) control;
for (int row = 0; row < ui->controlTable->rowCount(); row++)
{
U16 b = *(base + row);
U16 o = *(operand + row);
if (b != o)
{
*(base + row) = o;
TableValue *val = (TableValue *) ui->controlTable->cellWidget(row, 1);
val->setText(QString().sprintf("0x%04X", o));
}
}
}
void MainWindow::updateState(oven_state_t *state)
{
U16 *base = (U16 *) &this->state;
U16 *operand = (U16 *) state;
for (int row = 0; row < ui->stateTable->rowCount(); row++)
{
U16 b = *(base + row);
U16 o = *(operand + row);
if (b != o)
{
*(base + row) = o;
TableValue *val = (TableValue *) ui->stateTable->cellWidget(row, 1);
val->setText(QString().sprintf("0x%04X", o));
}
}
}