[dorkbotpdx-blabber] 5x5 matrix code help

Fri Mar 6 11:50:01 EST 2009

Hey,

What board / chip are you using?

Also, what are the exact errors?  

I tried your program and if I attempt to compile for an Arduino with an
Atmel 328, I get errors in line 51 & 52 of FrequencyTimer2.cpp.  I know why
this is happening but I don't know how to fix it "elegantly".  If this is
your problem and you want my "kludge", I'll send it to you.

Original code from FrequencyTimer2.cpp

47: #if defined(__AVR_ATmega168__) 

48:    if ( func) TIMSK2 |= _BV(OCIE2A);

49:    else TIMSK2 &= ~_BV(OCIE2A);

50: #else

51:    if ( func) TIMSK |= _BV(OCIE2);

52:    else TIMSK &= ~_BV(OCIE2);

53: #endif

Or if another list reader has a good understanding of the inner workings of
the Arduino environment and cpp, maybe they could look at it and spare me
the shame of distributing a kludge. ;)

Then, I tried to compile if for an Arduino with a 168 and I get errors in
stdlib.h line 111.  I looked at the line of code in stdlib.h and I can't see
anything wrong with it.  Hmm.

Stdlib.h:111

/** The abs() function computes the absolute value of the integer \c i.

   \note The abs() and labs() functions are builtins of gcc.

*/

extern int abs(int __i) __ATTR_CONST__;

Then again, maybe you're getting a completely different set of errors.  It's
entirely possible.  So knowing what error you're getting and where would
really help.

- Greg

  _____  

From: dorkbotpdx-blabber-bounces at dorkbot.org
[mailto:dorkbotpdx-blabber-bounces at dorkbot.org] On Behalf Of m sanders
Sent: Thursday, March 05, 2009 9:40 PM
To: dorkbotpdx-blabber at dorkbot.org
Subject: [dorkbotpdx-blabber] 5x5 matrix code help

Hey all, so i am new to the whole cult thing and am needing some help with
some code i am tryin to adapt from the arduino site to make this 5x5 matrix
work directly off dork board problem is that there are errors and im not
savvy enough with programming to work it out, more of a production kinda guy
not so much a software kinda guy. anyway i digress and will thank you all in
advance for any help you might be about to give me. 

michael

here is code. also as a side not you can seei jusr shortened the defined
space and changed row and column things to reflec the size of my matrix.
there is a part in the code that speaks of pin 11 and i am not using it so
maybe thats one problem but, the error messages have no mention of this, and
i have installed all libraries in the correct locations and everything. or
anyone have some 5x5 code layin around? thanks again!

/*

 * Show messages on an 5x5 led matrix,

 * scrolling from right to left.

 * 

 * Uses FrequencyTimer2 library to

 * constantly run an interrupt routine

 * at a specified frequency. This

 * refreshes the display without the

 * main loop having to do anything.

 *

 */

#include <FrequencyTimer2.h>

#define SPACE { \

    {0, 0, 0, 0, 0},  \

    {0, 0, 0, 0, 0}, \

    {0, 0, 0, 0, 0}, \

    {0, 0, 0, 0, 0}, \

    {0, 0, 0, 0, 0}, \

}

#define H { \

    {1, 0, 0, 0, 1}, \

    {1, 0, 0, 0, 1}, \

    {1, 1, 1, 1, 1}, \

    {1, 0, 0, 0, 1}, \

    {1, 0, 0, 0, 1}, \

}

#define E  { \

    {1, 1, 1, 1, 1}, \

    {1, 0, 0, 0, 0}, \

    {1, 1, 1, 0, 0}, \

    {1, 0, 0, 0, 0}, \

    {1, 1, 1, 1, 1}, \

}

#define L { \

    {1, 0, 0, 0, 0}, \

    {1, 0, 0, 0, 0}, \

    {1, 0, 0, 0, 0}, \

    {1, 0, 0, 0, 0}, \

    {1, 1, 1, 1, 1}, \

}

#define O { \

    {0, 1, 1, 1, 0}, \

    {1, 0, 0, 0, 1}, \

    {1, 0, 0, 0, 1}, \

    {1, 0, 0, 0, 1}, \

    {0, 1, 1, 1, 0}, \

}

byte col = 0;

byte leds[5][5];

// pin[xx] on led matrix connected to nn on Arduino (-1 is dummy to make
array start at pos 1)

int pins[11]= {-1, 4, 3, 14, 17, 13, 12, 10, 9, 8, 6};

// col[xx] of leds = pin yy on led matrix

int cols[5] = {pins[13], pins[3], pins[4], pins[10], pins[06]};

// row[xx] of leds = pin yy on led matrix

int rows[5] = {pins[9], pins[14], pins[8], pins[12], pins[1]};

const int numPatterns = 6;

byte patterns[numPatterns][5][5] = {

  H,E,L,L,O,SPACE

};

int pattern = 0;

void setup() {

  // sets the pins as output

  for (int i = 1; i <= 10; i++) {

    pinMode(pins[i], OUTPUT);

  }

  // set up cols and rows

  for (int i = 1; i <= 5; i++) {

    digitalWrite(cols[i - 1], LOW);

  }

  for (int i = 1; i <= 5; i++) {

    digitalWrite(rows[i - 1], LOW);

  }

  clearLeds();

  // Turn off toggling of pin 11

  FrequencyTimer2::disable();

  // Set refresh rate (interrupt timeout period)

  FrequencyTimer2::setPeriod(2000);

  // Set interrupt routine to be called

  FrequencyTimer2::setOnOverflow(display);

  setPattern(pattern);

}

void loop() {

    pattern = ++pattern % numPatterns;

    slidePattern(pattern, 60);

}

void clearLeds() {

  // Clear display array

  for (int i = 0; i < 5; i++) {

    for (int j = 0; j < 5; j++) {

      leds[i][j] = 0;

    }

  }

}

void setPattern(int pattern) {

  for (int i = 0; i < 5; i++) {

    for (int j = 0; j < 5; j++) {

      leds[i][j] = patterns[pattern][i][j];

    }

  }

}

void slidePattern(int pattern, int del) {

  for (int l = 0; l < 5; l++) {

    for (int i = 0; i < 4; i++) {

      for (int j = 0; j < 5; j++) {

        leds[j][i] = leds[j][i+1];

      }

    }

    for (int j = 0; j < 5; j++) {

      leds[j][4] = patterns[pattern][j][0 + l];

    }

    delay(del);

  }

}

// Interrupt routine

void display() {

  digitalWrite(cols[col], LOW);  // Turn whole previous column off

  col++;

  if (col == 5) {

    col = 0;

  }

  for (int row = 0; row < 5; row++) {

    if (leds[col][4 - row] == 1) {

      digitalWrite(rows[row], LOW);  // Turn on this led

    }

    else {

      digitalWrite(rows[row], HIGH); // Turn off this led

    }

  }

  digitalWrite(cols[col], HIGH); // Turn whole column on at once (for equal
lighting times)

  delayMicroseconds(900);  // Delay so that on times are longer than off
time = brighter leds

}

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