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After the Squid Games ended, the Front Man realized he would need a new game for the next Squid Games. He traveled all around the world looking for the perfect team to create the best game ever, until he finally found us, the Ringing Ray!TM Team. He asked us to build a game that would challenge the players of Squid Games, but told us he needed the game urgently, since the next games would start in just a few weeks.
The game is pretty simple – players will have five seconds to determine if both the pitch of the sound and the blinking of the light is increasing or decreasing. If the pattern is the same, the player must tilt the board, and if it is not, they do nothing. If the player is correct, the light will turn green and they can move on to the next round of the games. If the player is incorrect, the light will turn red and the player will be ELIMINATED.
/*
* main.c
*
* Nihal Bhatnagar
*
* Ray Simar
* ELEC 220
*
* Pitch Perfect Team
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
//CONSTANTS FOR FREQUENCY MODES
#define FREQ1 100
#define FREQ2 200
#define FREQ3 300
#define FREQ4 400
#define FREQ5 500
//extern void System_Clock_Init(void);
//extern void ADC0_InitSWTriggerSeq3_PE4(void);
//extern unsigned int ADC0_Sample_Seq3(void);
int main(void) {
unsigned int volatile *pRCGCGPIO = (unsigned int *) (0x400FE000 + 0x608);
unsigned int volatile *pGPIOLOCK_PortF = (unsigned int *)(0x40025000 + 0x520);
unsigned int volatile *pGPIOCR_PortF = (unsigned int *)(0x40025000 + 0x524);
unsigned int volatile *pGPIODIR_PortF = (unsigned int *) (0x40025000 + 0x400);
unsigned int volatile *pGPIOAFSEL_PortF = (unsigned int *) (0x40025000 + 0x420);
unsigned int volatile *pGPIODEN_PortF = (unsigned int *) (0x40025000 + 0x51C);
unsigned int volatile *pGPIODATA_PortF = (unsigned int *) (0x40025000 + 0x3FC);
unsigned int volatile *pGPIOLOCK_PortE = (unsigned int *)(0x40024000 + 0x520);
unsigned int volatile *pGPIOCR_PortE = (unsigned int *)(0x40024000 + 0x524);
unsigned int volatile *pGPIODIR_PortE = (unsigned int *) (0x40024000 + 0x400);
unsigned int volatile *pGPIOAFSEL_PortE = (unsigned int *) (0x40024000 + 0x420);
unsigned int volatile *pGPIOPUR_PortE = (unsigned int *) (0x40024000 + 0x510);
unsigned int volatile *pGPIODEN_PortE = (unsigned int *) (0x40024000 + 0x51C);
unsigned int volatile *pGPIODATA_PortE = (unsigned int *) (0x40024000 + 0x3FC);
//Port F
// Step 1a: Turn on the clocks for port F.
*pRCGCGPIO = *pRCGCGPIO | 0x0020;
// Step 1b: Check to be sure the clocks have started.
while ( (*pRCGCGPIO & 0x0020) == 0 ) ;
// Step 2a: Unlock Port F
*pGPIOLOCK_PortF = 0x4C4F434B;
// Step 2b: Enable us to commit to all controls in Port F for PF[4:0]
*pGPIOCR_PortF = *pGPIOCR_PortF | 0x1F;
//PF3: Output Audio
*pGPIODIR_PortF = *pGPIODIR_PortF | 0x08;
*pGPIOAFSEL_PortF = *pGPIOAFSEL_PortF & ~0x08; // No alternative functions for this pin
*pGPIODEN_PortF = *pGPIODEN_PortF | 0x08;
//Port E
*pRCGCGPIO = *pRCGCGPIO | 0x0010;
// Step 1b: Check to be sure the clocks have started.
while ( (*pRCGCGPIO & 0x0010) == 0 ) ;
// Step 2a: Unlock Port F
*pGPIOLOCK_PortE = 0x4C4F434B;
// Step 2b: Enable us to commit to all controls in Port F for PF[4:0]
*pGPIOCR_PortE = *pGPIOCR_PortE | 0x1F;
//PE3: Output LED
*pGPIODIR_PortE = *pGPIODIR_PortE | 0x08;
*pGPIOAFSEL_PortE = *pGPIOAFSEL_PortE & ~0x08;
*pGPIODEN_PortE = *pGPIODEN_PortE | 0x08;
//PE4: Input Button Press
int volatile switch_position, count;
// Let's use PE4 to read SW1.
// Step 3a: Set the direction of the pin to be used. we clear the bit.
// In _hex_ this would correspond to a mask of 0xFFEF;
*pGPIODIR_PortE = *pGPIODIR_PortE & 0xFFEF;
// Step 3b: Set the pullup resistor on the switch.
*pGPIOPUR_PortE = *pGPIOPUR_PortE | 0x10;
// Step 4: Set the pin to be used as a general purpose I/O poin.
// This means we clear the bit corresponding to PE1.
*pGPIOAFSEL_PortE = *pGPIOAFSEL_PortE & 0xFFEF;
// Step 5: Enable the pin
*pGPIODEN_PortE = *pGPIODEN_PortE | ~0xFFEF;
// switch_position = 16 if not pressed
// switch_position = 0 if pressed
//: Green/Red RGB initialization? Don't know how to do this
while(1)
{
// Toggle sound.
//*pGPIODATA_PortF = *pGPIODATA_PortF ^ 0x08;
//Turn on light
//*pGPIODATA_PortE = *pGPIODATA_PortE | 0x08;
//Turn off light
//*pGPIODATA_PortE = *pGPIODATA_PortE & ~0x08;
//Read Switch Position
//switch_position = *pGPIODATA_PortE & 0x10;
//We will have 5 frequencies to choose from for the lights and the sound
//repeat twice as comparison
//declare variables we will use to compare and determine if user press is accurate
int initialLightFreq, initialSoundFreq, finalLightFreq, finalSoundFreq;
//initialize initial sound and light frequencies randomly
int r;
srand(time(NULL));
r = rand() % 5;
switch(r)
{
case 0 :
initialLightFreq = FREQ1;
break;
case 1 :
initialLightFreq = FREQ2;
break;
case 2 :
initialLightFreq = FREQ3;
break;
case 3 :
initialLightFreq = FREQ4;
break;
case 4 :
initialLightFreq = FREQ5;
break;
}
r = rand() % 5;
switch(r)
{
case 0 :
initialSoundFreq = FREQ1;
break;
case 1 :
initialSoundFreq = FREQ2;
break;
case 2 :
initialSoundFreq = FREQ3;
break;
case 3 :
initialSoundFreq = FREQ4;
break;
case 4 :
initialSoundFreq = FREQ5;
break;
}
int i;
//Initial loop: set i limit to an amount that will last ~ 5 seconds for which each section will last
for (i = 0; i < 800000; i++)
{
//In order to differentiate the frequencies of the light and the sound, we need to be able to toggle each of them independently
//We can modulus the time to allow us to toggle each of these at different times, and adjust frequency constants accordingly
if(i % (finalLightFreq * 1000) == 0)
{
//toggle light
*pGPIODATA_PortE = *pGPIODATA_PortE ^ 0x08;
}
if(i % initialSoundFreq == 0)
{
//toggle sound
*pGPIODATA_PortF = *pGPIODATA_PortF ^ 0x08;
}
}
r = rand() % 5;
switch(r)
{
case 0 :
finalLightFreq = FREQ1;
break;
case 1 :
finalLightFreq = FREQ2;
break;
case 2 :
finalLightFreq = FREQ3;
break;
case 3 :
finalLightFreq = FREQ4;
break;
case 4 :
finalLightFreq = FREQ5;
break;
}
r = rand() % 5;
switch(r)
{
case 0 :
finalSoundFreq = FREQ1;
break;
case 1 :
finalSoundFreq = FREQ2;
break;
case 2 :
finalSoundFreq = FREQ3;
break;
case 3 :
finalSoundFreq = FREQ4;
break;
case 4 :
finalSoundFreq = FREQ5;
break;
}
//Second loop: set i limit to an amount that will last ~ 5 seconds for which each section will last
for(i = 0; i < 800000; i++)
{
if(i % (finalLightFreq * 1000) == 0)
{
*pGPIODATA_PortE = *pGPIODATA_PortE ^ 0x08;
}
if(i % finalSoundFreq == 0)
{
*pGPIODATA_PortF = *pGPIODATA_PortF ^ 0x08;
}
}
//turn off light
*pGPIODATA_PortE = *pGPIODATA_PortE & ~0x08;
//int acting as boolean to see if button is pressed in loop
int pressed = 0;
//Decision loop: the time in which user presses button to decide
for(i = 0; i < 800000; i++)
{
//check switch position
switch_position = *pGPIODATA_PortE & 0x10;
//if switch is pressed set pressed to true and break
if (switch_position == 16)
{
pressed = 1;
}
}
// win/lose logic
//Win condition is if both light and sound frequencies move in same direction and button is pressed
if((initialLightFreq > finalLightFreq && initialSoundFreq > finalSoundFreq) || (initialLightFreq < finalLightFreq && initialSoundFreq < finalSoundFreq))
{
if(pressed == 1)
{
for(i = 0; i < 800000; i++)
{
if(i % (300 * 100) == 0)
{
*pGPIODATA_PortE = *pGPIODATA_PortE ^ 0x08;
}
break;
}
}
}
else
{
if(pressed == 0)
{
for(i = 0; i < 800000; i++)
{
if(i % (300 * 100) == 0)
{
*pGPIODATA_PortE = *pGPIODATA_PortE ^ 0x08;
}
}
break;
}
}
}
return 0;
}
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