open_source / socket-cpp

  #include <iostream>
  #include <string>
  #include <chrono>
  #include <thread>

  #include "socket-cpp/can_socket.h"
  #include "socket-cpp/can_frame.h"
  #include "socket-cpp/version.h"

  
  #include <net/if.h>
  #include <sys/ioctl.h>
  
  using namespace std;
  
  // The clock to use to get time and pace the app.
  using sysclock = chrono::system_clock;
  
  // --------------------------------------------------------------------------
  
  int main(int argc, char* argv[])
  {

  	cout << "Sample SocketCAN writer for 'Socket-Cpp' "
  		<< osdev::components::socket-cpp::SOCKPP_VERSION << endl;

  
  	string canIface = (argc > 1) ? argv[1] : "can0";
  	canid_t canID = (argc > 2) ? atoi(argv[2]) : 0x20;
  

  	osdev::components::socket-cpp::socket_initializer sockInit;

  	osdev::components::socket-cpp::can_address addr(canIface);
  	osdev::components::socket-cpp::can_socket sock(addr);

  
  	if (!sock) {
  		cerr << "Error binding to the CAN interface " << canIface << "\n\t"
  			<< sock.last_error_str() << endl;
  		return 1;
  	}
  
  	cout << "Created CAN socket on " << sock.address() << endl;
  	time_t t = sysclock::to_time_t(sysclock::now());
  
  	while (true) {
  		// Sleep until the clock ticks to the next second
  		this_thread::sleep_until(sysclock::from_time_t(t+1));
  
  		// Re-read the time in case we fell behind
  		t = sysclock::to_time_t(sysclock::now());
  
  		// Write the time to the CAN bus as a 32-bit int
  		auto nt = uint32_t(t);
  

  		osdev::components::socket-cpp::can_frame frame { canID, &nt, sizeof(nt) };

  		sock.send(frame);
  	}
  
  	return (!sock) ? 1 : 0;
  }