LFS Forum - Insim in C++ and VS 2008 Express

#1 - MadCatX

Insim in C++ and VS 2008 Express

Fri, 4 Jun 2010 21:15

Hi there,

it's likely someone has had this issue before, but I just wasn't able to find anything relevant. I'm making a tiny app which in the end should make the RPM LEDs on G27 work, but I've ran into problems using the insim.h header.
When I try to compile the source, I get a handful of warning like


\include\insim.h(82) : error C2146: syntax error : missing ';' before identifier (some identifier)
\include\insim.h(82) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

I understand that the compiler behavior has changed since VS2005, but I have no idea how to get around this as C++ and Windows programming isn't really my area of expertise... Thanx for any advise.

My code is just a modified OutGauge program by DarkTimes


#include "stdafx.h"
#include <iostream>
#include <winsock2.h> // WinSock2 library (may need to add WS2_32.lib to project dependencies).

#define BUFFER_SIZE 512 // Receive buffer size (basically maximum packet size in UDP).
#define HOST "127.0.0.1" // Host to connect to.
#define PORT 30000 // Port to connect to the host through.

#define FIRST_LEDS_ON 4000.00f
#define REDLINE_LEDS 7000.00f

// Include Logitech headers
#include "LogiWheel.h"
#include "LogiControllerInput.h"

// Include InSim header.
#include "InSim.h"

using namespace LogitechSteeringWheel;
using namespace LogitechControllerInput;
using namespace std;


// Define types used by InSim.
typedef unsigned char byte;
typedef unsigned short word;
typedef struct
{
int X, Y, Z;
} Vec;

typedef struct
{
float X, Y, Z;
} Vector;

// Declare variables for the Logitech Wheel
Wheel* g_wheel;
ControllerInput* g_controllerInput;

// Declare RPM variable too
float inRpm = 0;

// Level of debbuging, passed by external argument
// 0 = Default, no verbosity
// 1 = Print what RPM are we getting from OutGauge
// 2 = Confirm that LED data is being sent te wheel
// 3 = Only output RPM info from OutGauge, don't send anything to wheel
int debugLevel = 0;

// More than one Logitech wheel can be connected. We have to take care of all of them.
int wheelIdx = 0;

//void OutGaugePacketReceived(const OutGaugePack packet);
int initInSimConnection();
void processOutGaugePacket(const OutGaugePack packet);

int _tmain(int argc, char** argv)
{
	// Get the debug level
	if(argc > 0)
	{
		debugLevel = atoi(argv[0]);

		//Idiot failsafe;)
		if((debugLevel > 4) || (debugLevel < 0))
		{
			debugLevel = 0;
		}
	}

	//Initialize the wheel input
	g_controllerInput = new ControllerInput(0, TRUE);
	g_wheel = new Wheel(g_controllerInput);

	//Connect to InSim

	return initInSimConnection();
}

int initInSimConnection()
{

	// Initialise WinSock version 2.2.
	WSADATA wsaData;
	if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
	{
		WSACleanup();
		std::cerr << "Error: Failed to init WinSock" << std::endl;
		return EXIT_FAILURE;
	}

	// Create UDP socket.
	SOCKET sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
	if (sock == INVALID_SOCKET)
	{
		WSACleanup();
		std::cerr << "Error: Could not create socket." << std::endl;
		return EXIT_FAILURE;
	}

	// Bind to receive UDP packets.
	sockaddr_in saddr;
	saddr.sin_family = AF_INET;
	saddr.sin_addr.s_addr = inet_addr(HOST);
	saddr.sin_port = htons(PORT);
	if (bind(sock, (sockaddr *)&saddr, sizeof(sockaddr)) == SOCKET_ERROR)
	{
		closesocket(sock);
		WSACleanup();
		std::cerr << "Error: Could not connect to LFS" << std::endl;
		return EXIT_FAILURE;
	}

	// Packet receive loop.
	char recvbuf[BUFFER_SIZE];
	memset(recvbuf, 0, sizeof(recvbuf)); // Set recvbuf to zero.
	int bytes = 0;
	do
	{
		bytes = recv(sock, recvbuf, BUFFER_SIZE, 0);
		if (bytes > 0)
			processOutGaugePacket((OutGaugePack &)recvbuf);
		else if (bytes == 0)
			std::cerr << "Error: Lost connection with LFS" << std::endl;
		else
			std::cerr << "Error: " << WSAGetLastError() << std::endl;
	} while (bytes > 0);

	// Cleanup and exit.
	closesocket(sock);
	WSACleanup();
	return EXIT_SUCCESS;
}

void processOutGaugePacket(const OutGaugePacket packet)
{
	inRpm = packet.RPM;


	if (debugLevel > 0)
	{
		cout << inRpm << std::endl;
	}

	//We are confident enough to send LED data to the wheel
	if(debugLevel < 2)
	{
		g_controllerInput->Update();
		g_wheel->Update();

		for(wheelIdx = 0; wheelIdx < LogitechSteeringWheel::LG_MAX_CONTROLLERS; wheelIdx++)
		{
			if(g_wheel->IsConnected(wheelIdx))
			{
				g_wheel->PlayLeds(wheelIdx, inRpm, FIRST_LEDS_ON, REDLINE_LEDS);

				//Print whether the data has been sent
				if (debugLevel == 2)
				{
					cout << "RPM data sent to device ID = " << wheelIdx << std::endl;
				}
			}
		}
	}
}

#2 - dawesdust_12

Fri, 4 Jun 2010 21:47

Hey MadcatX..

If I'm not mistaken.. you should be able to adapt this code to allow wheel rotation to get modified (with a / command)... Can you look into this as it's the Logi SDK that lets this happen.

#3 - MadCatX

Fri, 4 Jun 2010 21:53

I guess so, but the first thing I have to sort out is that the VS 2008 compiler just won't accept the "InSim.h" file.

#4 - filur

Sat, 5 Jun 2010 00:07

First google the error codes (C2146, C4430). If that doesn't help post line 82 of your copy of insim.h.

#5 - MadCatX

Sat, 5 Jun 2010 00:50

I got it sorted out, I accidentally included insim.h before definitions of the datatypes it uses

Now let's see if I can get that Logitech SDK cooperating...