I've been googling and researching for hours how to get my console Visual C++ Express program to transmit simple ASCII data to serial port. And without any success.
MSDN library doesn't help me as the example is unusable. I think it's for Express 2008. Everything else I've found is too old or just so complicated that I can't understand a word.
All I want to do is set up my serial port settings (COM3 57600 8-N-2, no handshake) and send few strings through serial port. How hard can it be?
Code is only slighty modified from DarkTimes's excellent tutorial.
The (int)packet.RPM shows revs beautifully in the console, I just need to put it through Serial Port along with speed and various other data. This wasn't a problem for me in VB, but out dated OutGauge lib forced me to look another ways to do this.
MSDN library doesn't help me as the example is unusable. I think it's for Express 2008. Everything else I've found is too old or just so complicated that I can't understand a word.
All I want to do is set up my serial port settings (COM3 57600 8-N-2, no handshake) and send few strings through serial port. How hard can it be?
Code is only slighty modified from DarkTimes's excellent tutorial.
#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 35555 // Port to connect to the host through.
// 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;
// Include InSim header.
#include "InSim.h"
void OutGaugePacketReceived(const OutGaugePack packet);
int main(int argc, char *argv[])
{
// 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)
OutGaugePacketReceived((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 OutGaugePacketReceived(const OutGaugePack packet)
{
unsigned mask = 1 << DL_SHIFT;
if (packet.ShowLights & mask)
{
std::cout << "Shift light on!" << std::endl;
}
std::cout << (int)packet.RPM << std::endl;
}The (int)packet.RPM shows revs beautifully in the console, I just need to put it through Serial Port along with speed and various other data. This wasn't a problem for me in VB, but out dated OutGauge lib forced me to look another ways to do this.
