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#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include "dialog.h"
#include "ui_dialog.h"
#include <QMessageBox>
Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{
ui->setupUi(this);
QString strText;
strText = "1. When USB gadget is enabled, the DE10-nano can work as an USB storage when it is connected to a Host PC. However, user's usb devices are required to plug into de10-nano after de10-nano linux boots. Otherwise, the usb devices will not be detected by the system.\r\n\r\n";
strText += "2. When USB gadget is disabled, an external USB device can be detected upon connecting to DE10-Nano before or after Linux boots up on DE10-Nano.\r\n\r\n";
strText += "Note: The system needs to reboot before the modified setting is applied to the system.";
ui->label_hint->setText(strText);
bool bEnable;
if (QueryCurrentSetting(&bEnable, false)){
if (bEnable)
ui->radioButton_Enable->setChecked(true);
else
ui->radioButton_Disable->setChecked(true);
}else{
ui->radioButton_Enable->setChecked(true);
}
}
Dialog::~Dialog()
{
delete ui;
}
void Dialog::on_pushButton_Exit_clicked()
{
qApp->quit();
}
void Dialog::on_pushButton_Apply_clicked()
{
if (ui->radioButton_Enable->isChecked())
GadgetEnable(true);
else
GadgetEnable(false);
}
bool Dialog::GadgetEnable(bool bEnable){
bool bSuccess = false;
int res;
char szCommand[256], szInfo[256];
sprintf(szCommand, "systemctl %s de10-nano-gadget-init.service", bEnable?"enable":"disable");
res = system(szCommand);
if (res == 0)
bSuccess = true;
if (!bSuccess){
sprintf(szInfo, "Failed to configure USB gadget.\r\n(%s)", szCommand);
QMessageBox(QMessageBox:: Warning, "Error", szInfo, QMessageBox::Ok).exec();
}else{
sprintf(szInfo, "Configure USB gadget successfully.\r\n");
QMessageBox(QMessageBox::Information, "Information", szInfo, QMessageBox::Ok).exec();
}
return bSuccess;
}
void Dialog::on_pushButton_Current_clicked()
{
// query current setting
ui->radioButton_Enable->setChecked(true);
bool bEnable;
if (QueryCurrentSetting(&bEnable)){
if (bEnable)
ui->radioButton_Enable->setChecked(true);
else
ui->radioButton_Disable->setChecked(true);
}
}
bool Dialog::QueryCurrentSetting(bool *bEnable, const bool bShowError){
bool bSuccess = false;
int res;
char szFilename[] = "gadget.log";
char szCommand[256], szInfo[256];
remove(szFilename);
//if (res == 0){
sprintf(szCommand, "systemctl is-enabled de10-nano-gadget-init.service > %s", szFilename);
res = system(szCommand);
if (res == -1){
printf("command return fail, code:%d", res);
}else{
FILE *file;
int nReadSize;
long int nSize;
const char szEnable[] = "enabled";
const char szDisable[] = "disabled";
usleep( 200*1000 ); // delay to make sure the file is ready.
file = fopen(szFilename, "r");
if (file == 0){
printf("failed to open file %s\r\n", szFilename);
}else{
fseek(file, 0L, SEEK_END);
nSize = ftell(file);
if(nSize < 0)
nSize = 0;
fseek(file, 0L, SEEK_SET);
//
char *szData;
szData = new char[nSize];
nReadSize = fread(szData, 1, nSize, file);
if (nReadSize == strlen(szEnable)+1){
if (strncmp(szEnable,szData, strlen(szEnable)) == 0){
*bEnable = true;
bSuccess = true;
}
}else if (nReadSize == strlen(szDisable)+1){
if (strncmp(szDisable,szData, strlen(szDisable)) == 0){
*bEnable = false;
bSuccess = true;
}
}
delete []szData;
fclose(file);
}
}
remove(szFilename);
if (!bSuccess && bShowError){
sprintf(szInfo, "Failed to query USB gadget setting.\r\n");
QMessageBox(QMessageBox:: Warning, "Error", szInfo, QMessageBox::Ok).exec();
}
return bSuccess;
}
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