#include <altera_avalon_pio_regs.h>
#include <stdio.h>
#include <system.h>
#define MenuCase(letter,proc) case letter:proc; break;
#include "sys/alt_stdio.h"


/*********************************************************/

void TimerUp() {
	unsigned int StartTimerUp;
	StartTimerUp = 1;
	IOWR_ALTERA_AVALON_PIO_DATA(PIO_OPERATION_BASE, StartTimerUp);
}
void TimerDown() {
	unsigned int StartTimerDown;
	StartTimerDown = 5;
	IOWR_ALTERA_AVALON_PIO_DATA(PIO_OPERATION_BASE, StartTimerDown);
}
void ShiftRight() {
	unsigned int StartShiftRight;
	StartShiftRight = 9;
	IOWR_ALTERA_AVALON_PIO_DATA(PIO_OPERATION_BASE, StartShiftRight);
}
void ShiftLeft() {
	unsigned int StartShiftLeft;
	StartShiftLeft = 13;
	IOWR_ALTERA_AVALON_PIO_DATA(PIO_OPERATION_BASE, StartShiftLeft);
}
void ShiftLeft2() {
	unsigned int StartShiftLeft2;
	StartShiftLeft2 = 17;
	IOWR_ALTERA_AVALON_PIO_DATA(PIO_OPERATION_BASE, StartShiftLeft2);
}
void ShiftLeft4() {
	unsigned int StartShiftLeft4;
	StartShiftLeft4 = 21;
	IOWR_ALTERA_AVALON_PIO_DATA(PIO_OPERATION_BASE, StartShiftLeft4);
}
void ShiftLeft8() {
	unsigned int StartShiftLeft8;
	StartShiftLeft8 = 25;
	IOWR_ALTERA_AVALON_PIO_DATA(PIO_OPERATION_BASE, StartShiftLeft8);
}
void Stop() {
	unsigned int StopOp;
	StopOp = 2;
	IOWR_ALTERA_AVALON_PIO_DATA(PIO_OPERATION_BASE, StopOp);
}
/******************************************************************
 *  Function: TopMenu
 *
 *  Purpose: Generates the top level menu.
 *
 ******************************************************************/
static int TopMenu(void) {
	char ch;


	/* Print the top-level menu to stdout */
	while (1) {
		alt_putstr("0 - Timer Up\n");
		alt_putstr("1 - Timer Down\n");
		alt_putstr("2 - Shift Right\n");
		alt_putstr("3 - Shift Left\n");
		alt_putstr("4 - Shift Left 2x\n");
		alt_putstr("5 - Shift Left 4x\n");
		alt_putstr("6 - Shift Left 8x\n");
		alt_putstr("s - Press S to stop\n");
		alt_putstr(" \n");
		alt_putstr(" \n");
		alt_putstr(" \n");
		alt_putstr(" \n");
		alt_putstr(" \n");
		alt_putstr(" \n");
		alt_putstr(" \n");
		alt_putstr(" \n");
		ch = alt_getchar(stdin);

		switch (ch) {
		case '0':
			TimerUp();
			break;
		case '1':
			TimerDown();
			break;
		case '2':
			ShiftRight();
			break;
		case '3':
			ShiftLeft();
			break;
		case '4':
			ShiftLeft2();
			break;
		case '5':
			ShiftLeft4();
			break;
		case '6':
			ShiftLeft8();
			break;
		case 's':
			Stop();
			break;
		case 'q':
			break;
		default:
			alt_putstr("\n -ERROR: %c is an invalid entry.  Please try again\n");
			break;
		}
		if (ch == 'q'){
			alt_putstr( "\nExiting from Memory Test.\n");
			break;
		}
		alt_putstr("\nPress enter to continue...\n");
	}
	return (ch);
}

/******************************************************************
 *  Function: main
 *
 *  Purpose: Continually prints the menu and performs the actions
 *           requested by the user.
 *
 ******************************************************************/
int main(void) {

	int ch;

	/* Print the menu and do what the user requests, until they hit 'q' */
	while (1) {
		ch = TopMenu();
		if (ch == 'q') {
			break;
		}
	}
	return (0);
}