[N64] ControllerTest

[sanni]

Here is my entry to the 2012 compo 


Video: www.youtube.com/watch?v=-wAXxKdLkr4

Nickname: sanni
Project Name: ControllerTest
From: Germany
Division: APP
Platform: N64
Original Enter: YES
Support Motion: NO
In last NEO Compo this project have won in the top 10: NO
Download: http://dl.dropbox.com/u/20912715/N64/ControllerTest.zip
Mirror: http://www59.zippyshare.com/v/84255069/file.html

This app lets you test your N64 controller. You can check all the buttons and also the analog stick.

For the analog stick is has a build in benchmark which you can use to compare the quality of different thumbstick replacements.

It even comes with some presets of the most common replacements and also from a brand new original thumbstick.

[sanni]

If you wonder how all the different controllers perform you can have a look at this link: http://s9.zetaboards.com/Nintendo_64_Forever/single/?p=8109518&t=7349580 

The Nintendo Forever forum user macN64 did an outstanding job testing all his controllers and uploading the results.   

Example:
Logic 3


(All images property of macN64)

[ChillyWilly]

I should try this on mine... the worn red controller really gave a weird result. The other bad one was the Hori Pad.

EDIT: Wow - the analog sticks on my pads suck BAD. It's one thing to think a game is a little "twitchy", but another to see the results when you can see what the pad is actually returning. The most useful is that first mode after pressing Z that plots a point for every read of the stick, leaving the point so you can see it. I twirl the stick and the resultant dots show the stick is much more than "twitchy". These are really BAD sticks.
 

[sanni]

The worst sticks so far are the gc style replacement sticks from ebay.

People all over the world have problems with those like not being able to perform certain moves in Super Smash Bros.

This test really makes clear why:


Instead of solid lines like in the next picture these sticks just print out dots.


Which basicly means they skip steps, instead of 0,1,2,3,4,5,6,7 they do 0,2,4,6,8,10,14,18,22 or similar.

[sanni]

A short followup.
I ported most of the code to Arduino and build a small little Controller Tester you can take with you to flea markets and such




Source:

Code: [Select]

// Gamecube controller to Nintendo 64 adapter by Andrew Brown
// Rewritten for N64 to HID by Peter Den Hartog
// Rewritten for ControllerTest_NOKIA by sanni
//
// LCD5110 lib (C)2011 Henning Karlsen
// This program requires a Nokia 5110 LCD module.
//
// It is assumed that the LCD module is connected to
// the following pins using a levelshifter to get the
// correct voltage to the module.
//      SCK  - Pin 8
//      MOSI - Pin 9
//      DC   - Pin 10
//      RST  - Pin 11
//      CS   - Pin 12
//
#include <LCD5110_Graph.h>
extern uint8_t SmallFont[];

// define LCD pins
LCD5110 myGLCD(8,9,10,11,12);

// Pin for controller data
#define N64_PIN 2

// DDR register on port D(Arduino pins 0-7)
#define N64_PIN_DIR DDRD

// these two macros set arduino pin 2 to input or output, which with an
// external 1K pull-up resistor to the 3.3V rail, is like pulling it high or
// low.  These operations translate to 1 op code, which takes 2 cycles
// 0x04 = 00000100 -> Pin 2 = Output
#define N64_HIGH DDRD &= ~0x04
#define N64_LOW DDRD |= 0x04
#define N64_QUERY (PIND & 0x04)

// received Controller data
char N64_raw_dump[33]; // 1 received bit per byte
String rawStr = ""; // above char array read into a string
struct {
  char stick_x;
  char stick_y;
}
N64_status;

// on which screens do we start
int startscreen = 0;
int mode=0;
int test = 1;

//stings that hold the buttons
String button = "N/A";
String lastbutton = "N/A";

//name of the current displayed result
String anastick = "";

// Graph
int xax = 24; // midpoint x
int yax = 24; // midpoint y
int zax = 24; // size

// variables to display test data of different sticks
int upx = 0;
int upy = 0;
int uprightx = 0;
int uprighty = 0;
int rightx = 0;
int righty = 0;
int downrightx = 0;
int downrighty = 0;
int downx = 0;
int downy = 0;
int downleftx = 0;
int downlefty = 0;
int leftx = 0;
int lefty = 0;
int upleftx = 0;
int uplefty = 0;

// variables to save test data
int bupx = 0;
int bupy = 0;
int buprightx = 0;
int buprighty = 0;
int brightx = 0;
int brighty = 0;
int bdownrightx = 0;
int bdownrighty = 0;
int bdownx = 0;
int bdowny = 0;
int bdownleftx = 0;
int bdownlefty = 0;
int bleftx = 0;
int blefty = 0;
int bupleftx = 0;
int buplefty = 0;
int results = 0;

void N64_send(unsigned char *buffer, char length);
void N64_get();

void setup()
{
  // Communication with controller on this pin
  // Don't remove these lines, we don't want to push +5V to the controller
  digitalWrite(N64_PIN, LOW); 
  pinMode(N64_PIN, INPUT);

  myGLCD.InitLCD();
  myGLCD.setFont(SmallFont);
}

// This sends the given byte sequence to the controller
// length must be at least 1
// Oh, it destroys the buffer passed in as it writes it

void N64_send(unsigned char *buffer, char length)
{
  // Send these bytes
  char bits;

  bool bit;

  // This routine is very carefully timed by examining the assembly output.
  // Do not change any statements, it could throw the timings off
  //
  // We get 16 cycles per microsecond, which should be plenty, but we need to
  // be conservative. Most assembly ops take 1 cycle, but a few take 2
  //
  // I use manually constructed for-loops out of gotos so I have more control
  // over the outputted assembly. I can insert nops where it was impossible
  // with a for loop

  asm volatile (";Starting outer for loop");
outer_loop:
  {
    asm volatile (";Starting inner for loop");
    bits=8;
inner_loop:
    {
      // Starting a bit, set the line low
      asm volatile (";Setting line to low");
      N64_LOW; // 1 op, 2 cycles

      asm volatile (";branching");
      if (*buffer >> 7) {
        asm volatile (";Bit is a 1");
        // 1 bit
        // remain low for 1us, then go high for 3us
        // nop block 1
        asm volatile ("nop\nnop\nnop\nnop\nnop\n");

        asm volatile (";Setting line to high");
        N64_HIGH;

        // nop block 2
        // we'll wait only 2us to sync up with both conditions
        // at the bottom of the if statement
        asm volatile ("nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\nnop\n" 
          );

      }
      else {
        asm volatile (";Bit is a 0");
        // 0 bit
        // remain low for 3us, then go high for 1us
        // nop block 3
        asm volatile ("nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\nnop\n" 
          "nop\n");

        asm volatile (";Setting line to high");
        N64_HIGH;

        // wait for 1us
        asm volatile ("; end of conditional branch, need to wait 1us more before next bit");

      }
      // end of the if, the line is high and needs to remain
      // high for exactly 16 more cycles, regardless of the previous
      // branch path

      asm volatile (";finishing inner loop body");
      --bits;
      if (bits != 0) {
        // nop block 4
        // this block is why a for loop was impossible
        asm volatile ("nop\nnop\nnop\nnop\nnop\n" 
          "nop\nnop\nnop\nnop\n");
        // rotate bits
        asm volatile (";rotating out bits");
        *buffer <<= 1;

        goto inner_loop;
      } // fall out of inner loop
    }
    asm volatile (";continuing outer loop");
    // In this case: the inner loop exits and the outer loop iterates,
    // there are /exactly/ 16 cycles taken up by the necessary operations.
    // So no nops are needed here (that was lucky!)
    --length;
    if (length != 0) {
      ++buffer;
      goto outer_loop;
    } // fall out of outer loop
  }

  // send a single stop (1) bit
  // nop block 5
  asm volatile ("nop\nnop\nnop\nnop\n");
  N64_LOW;
  // wait 1 us, 16 cycles, then raise the line
  // 16-2=14
  // nop block 6
  asm volatile ("nop\nnop\nnop\nnop\nnop\n"
    "nop\nnop\nnop\nnop\nnop\n" 
    "nop\nnop\nnop\nnop\n");
  N64_HIGH;

}

void N64_get()
{
  // listen for the expected 8 bytes of data back from the controller and
  // blast it out to the N64_raw_dump array, one bit per byte for extra speed.
  // Afterwards, call translate_raw_data() to interpret the raw data and pack
  // it into the N64_status struct.
  asm volatile (";Starting to listen");
  unsigned char timeout;
  char bitcount = 32;
  char *bitbin = N64_raw_dump;

  // Again, using gotos here to make the assembly more predictable and
  // optimization easier (please don't kill me)
read_loop:
  timeout = 0x3f;
  // wait for line to go low
  while (N64_QUERY) {
    if (!--timeout)
      return;
  }
  // wait approx 2us and poll the line
  asm volatile (
  "nop\nnop\nnop\nnop\nnop\n" 
    "nop\nnop\nnop\nnop\nnop\n" 
    "nop\nnop\nnop\nnop\nnop\n" 
    "nop\nnop\nnop\nnop\nnop\n" 
    "nop\nnop\nnop\nnop\nnop\n" 
    "nop\nnop\nnop\nnop\nnop\n" 
    );
  *bitbin = N64_QUERY;
  ++bitbin;
  --bitcount;
  if (bitcount == 0)
    return;

  // wait for line to go high again
  // it may already be high, so this should just drop through
  timeout = 0x3f;
  while (!N64_QUERY) {
    if (!--timeout)
      return;
  }
  goto read_loop;

}

void get_button()
{
  // Command to send to the gamecube
  // The last bit is rumble, flip it to rumble
  // yes this does need to be inside the loop, the
  // array gets mutilated when it goes through N64_send
  unsigned char command[] = {
    0x01                        };

  // don't want interrupts getting in the way
  noInterrupts();
  // send those 3 bytes
  N64_send(command, 1);
  // read in data and dump it to N64_raw_dump
  N64_get();
  // end of time sensitive code
  interrupts();

  // The get_N64_status function sloppily dumps its data 1 bit per byte
  // into the get_status_extended char array. It's our job to go through
  // that and put each piece neatly into the struct N64_status
  int i;
  memset(&N64_status, 0, sizeof(N64_status));

  // bits: joystick x value
  // These are 8 bit values centered at 0x80 (128)
  for (i=0; i<8; i++) {
    N64_status.stick_x |= N64_raw_dump[16+i] ? (0x80 >> i) : 0;
  }
  for (i=0; i<8; i++) {
    N64_status.stick_y |= N64_raw_dump[24+i] ? (0x80 >> i) : 0;
  }

  // read char array N64_raw_dump into string rawStr
  rawStr = "";
  for (i=0; i<16; i++) {
    rawStr = rawStr + String(N64_raw_dump[i],DEC);
  }

  // Buttons (A,B,Z,S,DU,DD,DL,DR,0,0,L,R,CU,CD,CL,CR)
  if (rawStr.substring(0,16) == "0000000000000000") {
    lastbutton = button;
    button = "Press a button";
  } 
  else
  {
    for (int i=0; i<16; i++)
    {
      if(N64_raw_dump[i]==4)
      {
        switch(i)
        {
        case 7:
          button = "D-Right";
          break;

        case 6:
          button = "D-Left";
          break;

        case 5:
          button = "D-Down";
          break;

        case 4:
          button = "D-Up";
          break;

        case 3:
          button = "START";
          break;

        case 2:
          button = "Z";
          break;

        case 1:
          button = "B";
          break;

        case 0:
          button = "A";
          break;

        case 15:
          button = "C-Right";
          break;

        case 14:
          button = "C-Left";
          break;

        case 13:
          button = "C-Down";
          break;

        case 12:
          button = "C-Up";
          break;

        case 11:
          button = "R";
          break;

        case 10:
          button = "L";
          break;
        }
      }
    }
  }
}

void printSTR(String st, int x, int y)
{
  char buf[st.length()+1];

  st.toCharArray(buf, st.length()+1);
  myGLCD.print(buf, x, y);
}

void nextscreen()
{
  if(button == "Press a button" && lastbutton == "START")
    {
      // reset button
      lastbutton = "N/A";

      myGLCD.clrScr();
      if(startscreen!=4)
       startscreen=startscreen+1;
      else
      {
        startscreen=1;
        test=1;
      } 
    }
}

void loop()
{
  // Get Button and analog stick
  get_button();

  switch (startscreen)
  {
  case 0: // Logo Screen
    {
      myGLCD.print("ControllerTest", CENTER, 8);
      myGLCD.print("V1.0", CENTER, 18);
      myGLCD.drawLine(0, 28, 84, 28);
      myGLCD.print("2013 sanni", CENTER, 32);
      myGLCD.update();

      delay(1500);
      startscreen=1;
      myGLCD.clrScr();
      break;
    }
  case 1:
    {
      myGLCD.print("Button Test", CENTER, 0);
      myGLCD.drawLine(0, 10, 84, 10);

      // Print Button
      printSTR("       " + button + "       ", CENTER, 20); 

      // Print Stick X Value
      String stickx = String("X: " + String(N64_status.stick_x, DEC) + "   ");
      printSTR(stickx, 0, 38);

      // Print Stick Y Value
      String sticky = String("Y: " + String(N64_status.stick_y, DEC) + "   ");
      printSTR(sticky, 42, 38);

      //Update LCD
      myGLCD.update();

      // go to next screen
      nextscreen();
      break;
    }
  case 2:
    {     
      myGLCD.print("Range", 52, 5);
      myGLCD.print("Test", 52, 15);
      myGLCD.drawRect(50, 0, 83, 25);

      // Print Stick X Value
      String stickx = String("X:" + String(N64_status.stick_x, DEC) + "   ");
      printSTR(stickx, 50, 28);

      // Print Stick Y Value
      String sticky = String("Y:" + String(N64_status.stick_y, DEC) + "   ");
      printSTR(sticky, 50, 38);

      // Draw Axis
      myGLCD.drawLine(xax-zax, yax, xax+zax, yax);
      myGLCD.drawLine(xax, yax-zax, xax, yax+zax);
      myGLCD.clrPixel(xax,yax-80/4);
      myGLCD.clrPixel(xax,yax+80/4);
      myGLCD.clrPixel(xax+80/4,yax);
      myGLCD.clrPixel(xax-80/4,yax);

      //Draw Analog Stick
      if (mode==1)
      {
        myGLCD.setPixel(xax+N64_status.stick_x/4, yax-N64_status.stick_y/4);
        //Update LCD
        myGLCD.update(); 
      } 
      else
      {
        myGLCD.drawCircle(xax+N64_status.stick_x/4, yax-N64_status.stick_y/4, 2);
        //Update LCD
        myGLCD.update();
        myGLCD.clrScr();
      } 

      // switch mode
      if(button == "Press a button" && lastbutton == "Z")
      {
        if (mode==0)
        {
          mode=1;
          myGLCD.clrScr();
        }
        else
        {
          mode=0;
          myGLCD.clrScr();
        }
      }
      // go to next screen
      nextscreen();
      break;
    }
  case 3:
    {
      myGLCD.print("Skipping Test", CENTER, 0);
      myGLCD.drawLine(0, 10, 83, 10);
      myGLCD.drawRect(0, 20, 83, 44);   
      myGLCD.drawLine(N64_status.stick_x, 20, N64_status.stick_x, 44);

      //Update LCD
      myGLCD.update();

      if(button == "Press a button" && lastbutton == "Z")
      {
        // reset button
        lastbutton = "N/A";

        myGLCD.clrScr();
      }
      // go to next screen
      nextscreen();
      break;
    }
  case 4:
    {
      switch( test )
      {
      case 0: // Display results
        {
          switch(results)
          {
          case 0:
            {
              anastick = "YOURS";   
              upx = bupx;
              upy = bupy;
              uprightx = buprightx;
              uprighty = buprighty;
              rightx = brightx;
              righty = brighty;
              downrightx = bdownrightx;
              downrighty = bdownrighty;
              downx = bdownx;
              downy = bdowny;
              downleftx = bdownleftx;
              downlefty = bdownlefty;
              leftx = bleftx;
              lefty = blefty;
              upleftx = bupleftx;
              uplefty = buplefty;

              if(button == "Press a button" && lastbutton == "A")
              {
                // reset button
                lastbutton = "N/A";
                results=1;
              }

              break;
            }
          case 1:
            {
              anastick = "ORIG";
              upx = 1;
              upy = 84;
              uprightx = 67;
              uprighty = 68;
              rightx = 83;
              righty = -2;
              downrightx = 67;
              downrighty = -69;
              downx = 3;
              downy = -85;
              downleftx = -69;
              downlefty = -70;
              leftx = -85;
              lefty = 0;
              upleftx = -68;
              uplefty = 68;

              if(button == "Press a button" && lastbutton == "A")
              {
                // reset button
                lastbutton = "N/A";
                results=0;
              }
              break;
            }

          } //results
          myGLCD.clrScr();
         
          printSTR(anastick, 50,0);
         
          myGLCD.print("U:", 50, 10);
          myGLCD.printNumI(upy, RIGHT, 10);
          myGLCD.print("D:", 50, 20);
          myGLCD.printNumI(downy, RIGHT, 20);
          myGLCD.print("L:", 50, 30);
          myGLCD.printNumI(leftx, RIGHT, 30);
          myGLCD.print("R:", 50, 40);
          myGLCD.printNumI(rightx, RIGHT, 40);

          myGLCD.drawLine(xax+upx/4, yax-upy/4, xax+uprightx/4, yax-uprighty/4);
          myGLCD.drawLine(xax+uprightx/4, yax-uprighty/4, xax+rightx/4, yax-righty/4);
          myGLCD.drawLine(xax+rightx/4, yax-righty/4, xax+downrightx/4, yax-downrighty/4);
          myGLCD.drawLine(xax+downrightx/4, yax-downrighty/4, xax+downx/4, yax-downy/4);
          myGLCD.drawLine(xax+downx/4, yax-downy/4, xax+downleftx/4, yax-downlefty/4);
          myGLCD.drawLine(xax+downleftx/4, yax-downlefty/4, xax+leftx/4, yax-lefty/4);
          myGLCD.drawLine(xax+leftx/4, yax-lefty/4, xax+upleftx/4, yax-uplefty/4);
          myGLCD.drawLine(xax+upleftx/4, yax-uplefty/4, xax+upx/4, yax-upy/4);

          myGLCD.setPixel(xax,yax);

          //Update LCD
          myGLCD.update();
          break;
        } //display results

      case 1:// +y Up
        {
          myGLCD.print("Hold Stick Up", CENTER, 18);
          myGLCD.print("then press A", CENTER, 28);
          //myGLCD.drawBitmap(110, 60, ana1);

          if(button == "Press a button" && lastbutton == "A")
          {
            bupx = N64_status.stick_x;
            bupy = N64_status.stick_y;
            // reset button
            lastbutton = "N/A";

            myGLCD.clrScr();
            test=2;
          }
          break;
        }

      case 2:// +y+x Up-Right
        {
          myGLCD.print("Up-Right", CENTER, 22 );
          //myGLCD.drawBitmap(110, 60, ana2);

          if(button == "Press a button" && lastbutton == "A")
          {
            buprightx = N64_status.stick_x;
            buprighty = N64_status.stick_y;
            test=3;
            // reset button
            lastbutton = "N/A";

            myGLCD.clrScr();
          }
          break;
        }

      case 3:// +x Right
        {
          myGLCD.print("Right", CENTER, 22 );
          //myGLCD.drawBitmap(110, 60, ana3);

          if(button == "Press a button" && lastbutton == "A")
          {
            brightx = N64_status.stick_x;
            brighty = N64_status.stick_y;
            test=4;
            // reset button
            lastbutton = "N/A";

            myGLCD.clrScr();
          }
          break;
        }

      case 4:// -y+x Down-Right
        {
          myGLCD.print("Down-Right", CENTER, 22 );
          //myGLCD.drawBitmap(110, 60, ana4);

          if(button == "Press a button" && lastbutton == "A")
          {
            bdownrightx = N64_status.stick_x;
            bdownrighty = N64_status.stick_y;
            test=5;
            // reset button
            lastbutton = "N/A";

            myGLCD.clrScr();
          }
          break;
        }

      case 5:// -y Down
        {
          myGLCD.print("Down", CENTER, 22 );
          //myGLCD.drawBitmap(110, 60, ana5);

          if(button == "Press a button" && lastbutton == "A")
          {
            bdownx = N64_status.stick_x;
            bdowny = N64_status.stick_y;
            test=6;
            // reset button
            lastbutton = "N/A";

            myGLCD.clrScr();
          }
          break;
        }

      case 6:// -y-x Down-Left
        {
          myGLCD.print("Down-Left", CENTER, 22 );
          //myGLCD.drawBitmap(110, 60, ana6);

          if(button == "Press a button" && lastbutton == "A")
          {
            bdownleftx = N64_status.stick_x;
            bdownlefty = N64_status.stick_y;
            test=7;
            // reset button
            lastbutton = "N/A";

            myGLCD.clrScr();
          }
          break;
        }

      case 7:// -x Left
        {
          myGLCD.print("Left", CENTER, 22 );
          //myGLCD.drawBitmap(110, 60, ana7);

          if(button == "Press a button" && lastbutton == "A")
          {
            bleftx = N64_status.stick_x;
            blefty = N64_status.stick_y;
            test=8;
            // reset button
            lastbutton = "N/A";

            myGLCD.clrScr();
          }
          break;
        }

      case 8:// +y+x Up-Left
        {
          myGLCD.print("Up-Left", CENTER, 22);
          //myGLCD.drawBitmap(110, 60, ana8);

          if(button == "Press a button" && lastbutton == "A")
          {
            bupleftx = N64_status.stick_x;
            buplefty = N64_status.stick_y;
            test=0;
            // reset button
            lastbutton = "N/A";

            myGLCD.clrScr();
          }
          break;
        }   
      }
      if (test!=0)
      {
        myGLCD.print("Benchmark", CENTER, 0);
        myGLCD.drawLine(0, 9, 83, 9); 
      }
      myGLCD.update();
      // go to next screen
      nextscreen();
      break;
    }
  }
}


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