oba essentials

README.md

oba2014

Developed on Microsoft Visual C++ 2010 Express (http://go.microsoft.com/?linkid=9709949)

Specific settings:

1. Right click Project -> Properties
2. Linker -> Input -> Ignore All Default Libraries -> No
3. Linker -> Input -> Ignore Specific Default Libraries -> MSVCRTD
4. Linker -> Command Line -> Additional Options -> add "/verbose" (without quotes - for troubleshooting)
5. OK

kernel.cpp

#include <iostream>
#include "OBATargetMachine.h"
#include "PortsLayout.h"
#pragma comment(lib, "OBAVirtualTarget.lib")

using namespace std;

static  char * msg; 
static	char msg1[] = "Hello World!             ";
static	char msg2[] = "Keyboard Pressed         ";
static	char msg3[] = "Driving Control          ";
static	char msg4[] = "                         ";
static volatile int temp = 100;
static const unsigned int	periodInMillisecond = 100; 

void periodicHandler (Interrupt sig) {
	ControlPanelInterruptStatusWord *keyId;
	switch (sig)
	{
	case IT_controlPanel : 
		keyId = (ControlPanelInterruptStatusWord *) (OTM::controlPanelInterruptWordAddress);
		cout << "Key Id : " << keyId->keyCode << endl;
		msg = msg2; temp = 10;
		break;
	case IT_drivingControls :
		cout << "IT driving" <<endl;
		msg = msg3; temp = 10;
		break;
	case IT_timer :
		temp--;
		// if the time is consumed to display Interrupt message, the default message is set
		if (temp < 0)
			msg = msg4;

		cout << ".";cout.flush();
		break;
	default :
	cout << "handler " << sig <<endl;
	}
}


void sendThrottleSignal(){
		ThrottleCommandWord *throttle;
		throttle = (ThrottleCommandWord *)(OTM::throttleCommandWordAddress);
		throttle->outputvoltagevalue=80;
		throttle->paritybit=1;
}

void getAndPrintPulse() {
	CounterWord *pulse;
	pulse = (CounterWord *) (OTM::pulseCounterWordAddress);
	cout << " \n\t" << pulse->pulsecount;
}

void sendLEDsignal() {
	LedCommandWord *led;  //init struct pointer
	led =  (LedCommandWord *)(OTM::ledCommandByteAddress); //mapping between local struct pointer to otm struct pointer 

	//assign/override accordingly
	led->led_1=1;   //left   // green
	led->led_2=1;   //center // yellow
	led->led_3=1;   //right  // red
}


int main(){

    int i=0;
	msg=msg1;
	DisplayBufferAddress	 *display;



try {
// initialisation of the interrupt vector

		OTM::interruptVector[IT_controlPanel] = periodicHandler;
        OTM::interruptVector[IT_drivingControls] = periodicHandler;
		OTM::interruptVector[IT_timer] = periodicHandler;
// set the timer

		OTM::setPeriodicTimer(periodInMillisecond, 0);
// enable the interrupt

        OTM::enabledInterruptsRegister = allObaRelatedInterrupts;

// keep the display buffer 

		display =  (DisplayBufferAddress*)(OTM::displayBufferAddress);
		


// infinite loop

 for (;;)
	{
		getAndPrintPulse(); //print current pulse to console
		sendLEDsignal();

// write the message to the display

		for (int j=0;j<20;j++)
			display->displaymessage[j]=msg[j];
// idle the CPU		

		OTM::idleWait (75);

		sendThrottleSignal();

	}
   }

   catch (const char *const message) {
 //     cout 
  //    << "Unexpected issue previous to OBA::run():" << endl 
   //   << "   " << message << endl;
      // context failure : useless to run OBA.
      throw;
   }


}