'drv' does not name a type - c++

Been looking for awhile and I cant find an answer. All paths are included. I'm referencing a class in another namespace in the class I'm creating.
I'm getting the following error:
src/app/Application.h:30:9: error: 'drv' does not name a type
Code Below. Any help is appreciated!
Main.cpp
int main(int argc, char** argv) {
app::Application program;
program.run();
return 0;
}
LEDs.h
#ifndef LEDS_H
#define LEDS_H
namespace drv {
class LEDs {
public:
LEDs();
void InitLEDs(void);
void SetLEDs(const uint8_t value);
private:
static const uint8_t NUM_LEDs = 5;
};
}
#endif /* LEDS_H */
Application.h
#ifndef APPLICATION_H
#define APPLICATION_H
namespace app {
enum State {
NORMAL = 0,
ZONE,
PAIRING,
STUCK,
BATT,
OFF
};
class Application {
public:
Application();
void run(void);
void execute_loop(void);
private:
bool IDLE;
State STATE;
drv::LEDs Leds; // LINE 30
};
}
#endif // APPLICATION_H
Application.cpp
#include "stdint.h"
#include "stdbool.h"
#include "../drv/LEDs.h"
#include "Application.h"
namespace app {
Application::Application() {
IDLE = false;
STATE = NORMAL;
}
void Application::run(void) {
Leds.InitLEDs();
while(1)
{
if(IDLE) {
PowerSaveIdle();
}
else {
execute_loop();
}
}
}
void Application::execute_loop(void)
{
}
}
LEDs.cpp
#include <stdint.h>
#include "LEDs.h"
namespace drv {
LEDs::LEDs() {
}
void LEDs::InitLEDs() {
SetLEDs(0xff);
}
void LEDs::SetLEDs(const uint8_t value) {
//Removed for readability
}
}

You're missing an #include ... line in Application.h. At the top of that file (or just after the inclusion guards) add the line
#include "LEDs.h"

Related

QT Multithread application crashing when I try to start threads

I am having issues when I try to create an application that simulates a restaurant. It needs to have 50 clients, 3 cooks, 1 waiter and 30 tables. When I try to start the threads of the clients, cooks and waiter it crashes and doesnt let me do anything, nor it gives me an error message or warning. I really don't know what to do. I hope you guys can help me with the answer.
Cook class.h:
`
#ifndef COOK_H
#define COOK_H
#include <QObject>
#include <QThread>
#include <QSemaphore>
class Cook : public QThread
{
Q_OBJECT
public:
Cook(int id, QString name);
void makeFood(int queueTotal);
void startCook();
private:
int id;
QString name;
int orderId;
QSemaphore semaphore;
protected:
void run(); //makeFood
};
#endif // COOK_H
cook.cpp
#include "cook.h"
#include <QTextStream>
Cook::Cook(int id, QString name)
{
this->id = id;
this->name = name;
}
void Cook::startCook(){
run();
}
void Cook::run(){
QTextStream(stdout)<< "hello im a cook";
}
`
client.h
`
#ifndef CLIENT_H
#define CLIENT_H
#include <QObject>
#include <QThread>
#include <QSemaphore>
class Order;
class Client : public QThread
{
Q_OBJECT
public:
Client(int id, QString name);
void setOrder(Order* order);
int getId();
void startClient();
private:
int id;
QString name;
QSemaphore semaphore;
Order* order;
protected:
void run();
};
#endif // CLIENT_H
`
client.cpp
`
#include "client.h"
#include <QTextStream>
Client::Client(int id, QString name)
{
this->id = id;
this->name = name;
}
void Client::startClient(){
run();
}
void Client::run(){
QTextStream(stdout)<< "hello im a client";
}
void Client::setOrder(Order* order){
this->order = order;
}
int Client::getId(){
return this->id;
}
`
order.cpp and .h
`
#ifndef ORDER_H
#define ORDER_H
class Order
{
public:
Order(int orderId, bool orderType);
private:
int orderId;
bool orderType; //true carne - false vegano
};
#endif // ORDER_H
`
order.cpp
`
#include "order.h"
Order::Order(int orderId, bool orderType)
{
this->orderId = orderId;
this->orderType = orderType;
}
table.h and cpp
#ifndef TABLE_H
#define TABLE_H
#include <QObject>
class Client;
class Table
{
public:
Table(int id, QString name, bool seat);
void clearClient();
void setClient(Client newClient);
private:
int id;
QString name;
bool seat;
int clientId;
};
#endif // TABLE_H
table.cpp
#include "table.h"
#include "client.h"
Table::Table(int id, QString name, bool seat)
{
this->seat = seat;
this->clientId = 0;
this->id = id;
this->name = name;
}
void Table::clearClient(){
this->seat = false;
this->clientId = -1;
}
void Table::setClient(Client newClient){
this->clientId = newClient.getId();
this->seat = true;
}
`
waiter.h
`
#ifndef WAITER_H
#define WAITER_H
#include <QObject>
#include <QThread>
#include <QSemaphore>
class Waiter : public QThread
{
Q_OBJECT
public:
Waiter(int id, QString name);
void startWaiter();
private:
int id;
QString name;
int orderId;
int tableId;
QSemaphore semaphore;
protected:
void run();
};
#endif // WAITER_H
`
waiter.cpp
`
#include "waiter.h"
#include <QTextStream>
Waiter::Waiter(int id, QString name)
{
this->id = id;
this->name = name;
}
void Waiter::startWaiter(){
run();
}
void Waiter::run(){
QTextStream(stdout)<< "hello im a waiter";
}
`
restaurant.h
`
#ifndef RESTAURANT_H
#define RESTAURANT_H
class Restaurant
{
public:
Restaurant();
void startRestaurant(int totalChefs, int totalTables, int totalWaiters, int totalClients);
};
#endif // RESTAURANT_H
`
restaurant.cpp
`
#include "restaurant.h"
#include <QThread>
#include "cook.h"
#include "client.h"
#include "waiter.h"
#include "table.h"
Restaurant::Restaurant()
{
}
void Restaurant::startRestaurant(int totalChefs, int totalTables, int totalWaiters, int totalClients){
QList <Cook*> cookList;
QList <Waiter*> waiterList;
QList <Client*> clientList;
QList <Table*> tables;
//start
for(int i=0; i<totalChefs; i++){
QString output = QStringLiteral("Cook %1").arg(i);
Cook cook(i, output);
cookList.append(&cook);
}
for(int i=0; i<totalWaiters; i++){
QString output = QStringLiteral("Waiter %1").arg(i);
Waiter waiter(i, output);
waiterList.append(&waiter);
}
for(int i=0; i<totalClients; i++){
QString output = QStringLiteral("Client %1").arg(i);
Client client(i, output);
clientList.append(&client);
}
for(int i=0; i<totalTables; i++){
QString output = QStringLiteral("Table %1").arg(i);
Table table(i, output, false);
tables.append(&table);
}
cookList.value(1)->startCook();
waiterList.value(1)->startWaiter();
clientList.value(1)->startClient();
}
`
I am new to QT so please bear that in mind, I hope you guys can help me!

How to pass or share mutex in class member in c++

I want to develop a logger class. So I decided put all related code to the read operation in the
dataLogger class.
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Is it possible to use one mutex to manage read and write operation?
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I used QtGuiApplication to illustrate my problem.
In main.cpp
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In QtGuiApplication8.cpp
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How to add custom interface function to Arduino library

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#include <Arduino.h>
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Now I want to notify on main sketch if some certain event occurred.
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c2653 no class or namespace .hpp/.cpp

Hey I'm a C++ beginner and trying to learn the basics. I tried to compile my code but it keeps telling me
error. (c2653) "Framework": no class or namespace in line 4.
Another error is
"sf":no class or namespace
but if I add #include <SFML\Graphics.hpp> to my Framework.cpp code it solve the problem. As I understand the .hpp headers include all the code to the cpp files. So why should I include the SFML\Graphics.hpp twice?
Here is my Code:
#ifndef FRAMEWORKK_H
#define FRAMEWORKK_H
#include <iostream>
#include <SFML\Graphics.hpp>
#include "stdafx.h"
class Framework
{
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Framework();
~Framework();
void run();
private:
void quit();
void update();
void handleEvent();
void render();
sf::RenderWindow * pRenderWindow;
sf::Event * pMainEvent;
bool mRun;
};#endif
and here is my .cpp code
#include "Frameworkk.h"
#include "stdafx.h"
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{
}
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update();
handleEvent();
render();
quit();
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}
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pRenderWindow->close();
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}
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{
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while (pRenderWindow->pollEvent(*pMainEvent))
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redefinition of "class GtkwidgetDef"

I really don't know why i have this redefinition error
GtkwidgetDef.h
#include <gtk/gtk.h>
class GtkwidgetDef
{
public:
GtkWidget* display;
GtkwidgetDef(GtkButton* button);
};
GtkwidgetDef.cpp
#include "GtkwidgetDef.h"
extern "C" GtkWidget* lookup_widget(GtkWidget* widget, const gchar* widgetName);
GtkwidgetDef::GtkwidgetDef(GtkButton* button){
display = lookup_widget(GTK_WIDGET(button), "display");
}
these two fonctions are juste definition and constructor
MesFonctions.cpp
#include "MesFonctions.h"
#include <math.h>
string str;
gchar str1[9] = "";
void showText(GtkwidgetDef widgets, gchar* label)
{
gtk_entry_set_text(GTK_ENTRY(widgets->display), label);
}
.........
CALCU.h
#include <gtk/gtk.h>
typedef enum Event{ SEVEN_CLICKED, PLUS_CLICKED, VALIDE } Event;
int processEvent(Event e, GtkButton* button);
CALCU.cpp
#include "CALCU.h"
#include "MesFonctions.h"
#include "GtkwidgetDef.h"
int processEvent(Event e, GtkButton* button)
{
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//label = gtk_button_get_label(button);
GtkwidgetDef widgets(button);
gchar* label;
strcpy(label, gtk_button_get_label(button));
string s;
switch(e)
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case SEVEN_CLICKED:
//showText(*widgets, label);
showText(widgets, label);
s = "7";
pushValue(s);
break;
case PLUS_CLICKED:
//showText(*widgets, label);
showText(widgets, label);
s = "+";
pushValue(s);
break;
case VALIDE:
showResult();
break;
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i wonder if i make an error here in this line GtkwidgetDef widgets(button);
I think the reason you are seeing this is that you include GtkwidgetDef.h twice at some point: once directly and once indirectly. You probably need to add an include guard to your header:
#ifndef GtkwidgetDef_h
#define GtkwidgetDef_h
#include <gtk/gtk.h>
class GtkwidgetDef
{
public:
GtkWidget* display;
GtkwidgetDef(GtkButton* button);
};
#endif