[setup]

OK, now I have re-ordered it and added another function [not important] I get another similar error:

#include <Tlc5940.h>
#define NUM_TLCS 3
#define NUM_CHNLS 16*NUM_TLCS  // The number of LEDs = 3 TLCs * 16
#define WIDTH 16
#define HEIGHT 8

// Column Colour Channels
byte redChannels[16] = {
  0 ,1 ,2 ,3 ,4 ,5 ,6 ,7,  // TLC1: 0 - 7
  16,17,18,19,20,21,22,23};  // TLC2:16-23
byte greenChannels[16] = {
  8 ,9 ,10,11,12,13,14,15,  // TLC1: 8 - 15
  24,25,26,27,28,29,30,31};  // TLC2:24-31
byte blueChannels[16] = {
  32,33,34,35,36,37,38,39,
  40,41,42,43,44,45,46,47};  // TLC3:32-47
// Row Pins
byte rowPins[8] = {
  0,1,2,3,4,5,6,7};

int image1R[WIDTH][HEIGHT] = {
  0xfff, 0xeff, 0xdff, 0xcff, 0xbff, 0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff,
  0xeff, 0xdff, 0xcff, 0xbff, 0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff,
  0xdff, 0xcff, 0xbff, 0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff,
  0xcff, 0xbff, 0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff, 0xdff,
  0xbff, 0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff, 0xdff, 0xcff,
  0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff, 0xdff, 0xcff, 0xbff,
  0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff, 0xdff, 0xcff, 0xbff, 0xaff,
  0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff, 0xdff, 0xcff, 0xbff, 0xaff, 0x9ff};

void runImage(byte& colourChannels, int& imageArray){
  for(int y=0; y<HEIGHT; y++){
    digitalWrite(rowPins[y], HIGH);
    digitalWrite(rowPins[!y], LOW);
    for(int i=0; i<WIDTH; i++){
      Tlc.set(colourChannels[y], imageArray);
    }
  }
}

void randomColours(){
  for(int y=0; y<HEIGHT; y++){
    digitalWrite(rowPins[y], HIGH);
    digitalWrite(rowPins[!y], LOW);
    for(int i=0; i<WIDTH; i++){
      int randomRed = random(1, 4095);  // Generate random number: 1+ so none can ever be off
      int randomGreen = random(1, 4095);  // Generate random number: 1+ so none can ever be off
      int randomBlue = random(1, 4095);  // Generate random number: 1+ so none can ever be off
      Tlc.set(redChannels, randomRed);
      Tlc.set(greenChannels, randomRed);
      Tlc.set(blueChannels, randomRed);
      delay(100);
    }
  }
}

void setup(){
  randomSeed(analogRead(0));
  Tlc.init();
  for(int i=0; i<8; i++){
    pinMode(rowPins, OUTPUT);
  }
}

void loop(){
  runImage(redChannels, image1R);
}

error: In function 'void runImage(byte&, int&)':
error: invalid types 'unsigned char[int]' for array subscript In function 'void loop()':

/me

Now that I have changed that, I get this error:

In function 'void loop()':
error: invalid initialization of non-const reference of type 'byte&' from a temporary of type 'byte*' In function 'void runImage(byte&, int&)':

I'm not quite sure what this means as I am not too experienced with C++ functions. Most of this was a mixture of luck and reading example [which are usually about maths]

/me

Hmmm...this has never seemed to matter before, but thanks for that!

/me

[setup]

I have developed this so far:

#include <Tlc5940.h>
#define NUM_CHNLS 48  // The number of LEDs = 3 TLCs * 16

// Column Colour Channels
byte redChannels[16] = {
  0 ,1 ,2 ,3 ,4 ,5 ,6 ,7,  // TLC1: 0 - 7
  16,17,18,19,20,21,22,23};  // TLC2:16-23
byte greenChannels[16] = {
  8 ,9 ,10,11,12,13,14,15,  // TLC1: 8 - 15
  24,25,26,27,28,29,30,31};  // TLC2:24-31
byte blueChannels[16] = {
  32,33,34,35,36,37,38,39,
  40,41,42,43,44,45,46,47};  // TLC3:32-47
// Row Pins
byte rowPins[8] = {
  0,1,2,3,4,5,6,7};

int image1R[16][8] = {
  0xfff, 0xeff, 0xdff, 0xcff, 0xbff, 0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff,
  0xeff, 0xdff, 0xcff, 0xbff, 0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff,
  0xdff, 0xcff, 0xbff, 0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff,
  0xcff, 0xbff, 0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff, 0xdff,
  0xbff, 0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff, 0xdff, 0xcff,
  0xaff, 0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff, 0xdff, 0xcff, 0xbff,
  0x9ff, 0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff, 0xdff, 0xcff, 0xbff, 0xaff,
  0x8ff, 0x7ff, 0x6ff, 0x5ff, 0x4ff, 0x3ff, 0x2ff, 0x1ff, 0xff, 0xfff, 0xeff, 0xdff, 0xcff, 0xbff, 0xaff, 0x9ff};

void setup(){
  Tlc.init();
  for(int i=0; i<8; i++){
    pinMode(rowPins, OUTPUT);
  }
}

void loop(){
  runImage(redChannels, image1R);
}

void runImage(byte &colourChannels, int &imageArray){
  for(int y=0; y<8; y++){
    digitalWrite(rowPins[y], HIGH);
    digitalWrite(rowPins[!y], LOW);
    for(int i=0; i<16; i++){
      Tlc.set(colourChannels[y], imageArray);
    }
  }
}

I created the void runImage() function to scan across the rows and set data for the pixels across the columns from image1R (being the first image set for Red Values)

But I get this error: In function 'void loop()':
error: 'runImage' was not declared in this scope In function 'void runImage(byte&, int&)':

/me

Yes, I'm still slightly confused.

/me

Could someone please give me some information on the use of the shiftOut() command and how it is used. I am using it to run an RGB LED matrix using a TLC5947 or some '595s.

/me

It makes sense. If you think about them as digital I/Os, it would be I/O 14. But in analogue mode, it is analogue In 0.

And the analogue pins follow the ATmega168's pin mapping. Whereas the digital I/Os d not follow the patter; but work simply.

/me

Make sure that the LED is connected to a digital pin that supports PWM output e.g. pins 3, 5, 6, 9, 10, and 11

/me

You're generating the random value into 'val' but not using the value i.e. you're not writing the value of 'val' to the PWM pin.

I think it should be like:

Code:

int ledPin = 9;                  // LED connected to digital pin 13
int potPin = 2;                  // Define a pin for pot
int val = 0;                      // hold a random value
int time = 1000;                  // hold the time between loops

void setup() {                    // run once, when the sketch starts
  pinMode( ledPin, OUTPUT );      // sets the digital pin as output
}

void loop() {                    // run over and over again
  val = random( 0, 255 );          // Generate a random number
  time = analogRead( potPin );  // Get the value from pot
  analogWrite( ledPin, val );   // sets the LED brightness to random value
  delay( time );                // waits for a second
  analogWrite( ledPin, val );
  delay( time );
}

And it should be a random value from 0 - 255 which is 256 steps.

[setup]

Say you had the code:

unsigned long previousMillis;
long interval = 4000;

void setup(){}

void loop()
{
  previousMillis = millis();
  if(millis() - previousMillis < interval) {
  }
}

You could condense this into a function [void because it doesn't return a data type].

unsigned long previousMillis;

void setup(){
}

void loop()
{
  pause(1000);
}

void pause(long interval) {
  previousMillis = millis();
  if(millis() - previousMillis < interval) {
  }
}

See here: http://www.arduino.cc/en/Reference/FunctionDeclaration

/me

Yes that compiles! Thank you; know onto completing it in the same fashion. So hopefully nothing else can go wrong [touch wood].

Cheers for the help, /me

Yes I have been trying with that type of code too...but always get this result:

In function 'void loop()':
error: request for member 'displayCap' in 'testSts', which is of non-class type 'Sts ()()

[setup]

Now that I have what I think is the right code for the library:

Code:

#include "WProgram.h"
#include "Sts.h"

byte charactersCap[26][16] = {
  {1,0,0,1,1,0,0,1,0,0,1,0,1,1,0,1},  // A
  {1,0,0,1,0,0,0,1,1,1,0,1,0,0,1,1},  // B
  {1,0,0,1,0,0,0,1,1,1,0,0,0,0,0,1},  // C
  {1,0,0,1,0,0,0,1,1,1,0,1,0,1,0,1},  // D
  {1,0,0,1,0,0,0,1,1,1,0,0,0,1,0,1},  // E
  {1,0,0,1,1,0,0,1,0,0,0,0,0,0,0,1},  // F
  {1,0,0,1,0,0,0,1,1,1,1,0,1,0,0,1},  // G
  {0,0,0,1,1,0,0,1,0,0,1,0,1,1,0,0},  // H
  {1,1,0,0,0,1,0,0,1,1,0,0,0,0,0,1},  // I
  {1,1,0,0,0,1,1,0,0,0,0,0,0,0,0,1},  // J
  {0,0,0,1,1,0,0,1,0,0,0,1,0,0,1,0},  // K
  {0,0,0,1,0,0,0,1,1,1,0,0,0,0,0,0},  // L
  {1,1,0,1,0,0,0,1,0,0,1,0,0,1,0,1},  // M
  {0,0,1,1,0,0,0,1,0,0,1,1,0,1,0,0},  // N
  {1,0,0,1,0,0,0,1,1,1,1,0,0,1,0,1},  // O
  {1,0,0,1,1,0,0,1,0,0,0,0,1,1,0,1},  // P
  {1,0,0,1,0,0,0,1,1,1,1,1,0,1,0,1},  // Q
  {1,0,0,1,1,0,0,1,0,0,0,1,1,1,0,1},  // R
  {1,0,0,1,1,0,0,0,1,1,1,0,1,0,0,1},  // S
  {1,1,0,0,0,1,0,0,0,0,0,0,0,0,0,1},  // T
  {0,0,0,1,0,0,0,1,1,1,1,0,0,1,0,0},  // U
  {0,0,1,0,0,0,0,0,0,0,1,1,0,1,0,0},  // V
  {0,0,0,1,0,1,0,1,1,1,1,0,0,1,0,0},  // W
  {0,0,1,0,0,0,1,0,0,0,0,1,0,0,1,0},  // X
  {0,0,1,0,0,1,0,0,0,0,0,0,0,0,1,0},  // Y
  {1,0,0,0,0,0,1,0,1,1,0,0,0,0,1,1}};  // Z

Sts::Sts(){
  for(int i=2; i<17; i++){
    pinMode(i, OUTPUT);
  }
}

void Sts::displayCap(int _charNum)
{
  for(int i=0; i<15; i++) {
    digitalWrite((i+2), charactersCap[_charNum][i]);
  }
}

Code:

#ifndef Sts_h
#define Sts_h

#include "WProgram.h"

class Sts
{
  public:
    Sts();
    int _charNum;
    void displayCap(int _charNum);
    byte charactersCap[26][16];
  private:
};

#endif

And the basic example:

#include <Sts.h>

void setup(){
}

void loop() {
  for(int i=0; i<26; i++) {
    Sts.displayCap(i);
    delay(500);
  }
}

But I still get this error: In function 'void loop()':
error: expected unqualified-id before '.' token

So I think I'm implementing something wrong...

OK thanks, that was missing; but now I get this error:

In file included from C:\Program Files\Arduino\arduino-0015\hardware\cores\arduino/WProgram.h:4,


                 from hardware\libraries\Sts/Sts.h:5,


c:/program files/arduino/arduino-0015/hardware/tools/avr/lib/gcc/../../avr/include/stdlib.h:111: error: expected unqualified-id before 'int'


c:/program files/arduino/arduino-0015/hardware/tools/avr/lib/gcc/../../avr/include/stdlib.h:111: error: expected `)' before 'int'


c:/program files/arduino/arduino-0015/hardware/tools/avr/lib/gcc/../../avr/include/stdlib.h:111: error: expected `)' before 'int'


In file included from C:\Program Files\Arduino\arduino-0015\hardware\cores\arduino/WProgram.h:6,


                 from hardware\libraries\Sts/Sts.h:5,

Code:

#include "WProgram.h"
#include "Sts.h"

byte charactersCap[26][16] = {
  {1,0,0,1,1,0,0,1,0,0,1,0,1,1,0,1},  // A
  {1,0,0,1,0,0,0,1,1,1,0,1,0,0,1,1},  // B
  {1,0,0,1,0,0,0,1,1,1,0,0,0,0,0,1},  // C
  {1,0,0,1,0,0,0,1,1,1,0,1,0,1,0,1},  // D
  {1,0,0,1,0,0,0,1,1,1,0,0,0,1,0,1},  // E
  {1,0,0,1,1,0,0,1,0,0,0,0,0,0,0,1},  // F
  {1,0,0,1,0,0,0,1,1,1,1,0,1,0,0,1},  // G
  {0,0,0,1,1,0,0,1,0,0,1,0,1,1,0,0},  // H
  {1,1,0,0,0,1,0,0,1,1,0,0,0,0,0,1},  // I
  {1,1,0,0,0,1,1,0,0,0,0,0,0,0,0,1},  // J
  {0,0,0,1,1,0,0,1,0,0,0,1,0,0,1,0},  // K
  {0,0,0,1,0,0,0,1,1,1,0,0,0,0,0,0},  // L
  {1,1,0,1,0,0,0,1,0,0,1,0,0,1,0,1},  // M
  {0,0,1,1,0,0,0,1,0,0,1,1,0,1,0,0},  // N
  {1,0,0,1,0,0,0,1,1,1,1,0,0,1,0,1},  // O
  {1,0,0,1,1,0,0,1,0,0,0,0,1,1,0,1},  // P
  {1,0,0,1,0,0,0,1,1,1,1,1,0,1,0,1},  // Q
  {1,0,0,1,1,0,0,1,0,0,0,1,1,1,0,1},  // R
  {1,0,0,1,1,0,0,0,1,1,1,0,1,0,0,1},  // S
  {1,1,0,0,0,1,0,0,0,0,0,0,0,0,0,1},  // T
  {0,0,0,1,0,0,0,1,1,1,1,0,0,1,0,0},  // U
  {0,0,1,0,0,0,0,0,0,0,1,1,0,1,0,0},  // V
  {0,0,0,1,0,1,0,1,1,1,1,0,0,1,0,0},  // W
  {0,0,1,0,0,0,1,0,0,0,0,1,0,0,1,0},  // X
  {0,0,1,0,0,1,0,0,0,0,0,0,0,0,1,0},  // Y
  {1,0,0,0,0,0,1,0,1,1,0,0,0,0,1,1}};  // Z

void Sts::displayCap(int _charNum)
{
  for(int i=0; i<15; i++) {
    digitalWrite((i+2), charactersCap[_charNum][i]);
  }
}

void Sts::displaySml(int _charNum)
{
  for(int i=0; i<15; i++) {
    digitalWrite((i+2), charactersCap[_charNum][i]);
  }
}

void Sts::displayNum(int _charNum)
{
  for(int i=0; i<15; i++) {
    digitalWrite((i+2), charactersCap[_charNum][i]);
  }
}

Code:

#ifndef Sts_h
#define Sts_h

#include "WConstants.h"
#include "WProgram.h"

class Sts
{
  public:
    void displayCap(int _charNum);
    void displaySml(int _charNum);
    void displayNum(int _charNum);
  private:
    int _charNum;
    byte charactersCap[26][16];
};

#endif

Here's the .cpp and .h files of my library.

[edit]I have only included one font table as they take a long time to make and take up a lot of space.[/edit]

Cheers, /me

[edit]Ever tinker I try brings up new or the same errors! See code below...[/edit]
I have just created my first (working) library. It give simple use of a Seventeen segment LED display using almost all digital (and analogue) I/O.

I compiled the library fine after a long time of tinkering, but when I can o compile an example I got this error:

In file included from C:\Program Files\Arduino\arduino-0015\hardware\cores\arduino/WProgram.h:4,

c:/program files/arduino/arduino-0015/hardware/tools/avr/lib/gcc/../../avr/include/stdlib.h:111: error: expected unqualified-id before 'int'

c:/program files/arduino/arduino-0015/hardware/tools/avr/lib/gcc/../../avr/include/stdlib.h:111: error: expected `)' before 'int'

c:/program files/arduino/arduino-0015/hardware/tools/avr/lib/gcc/../../avr/include/stdlib.h:111: error: expected `)' before 'int'

In file included from C:\Program Files\Arduino\arduino-0015\hardware\cores\arduino/WProgram.h:6,,

What does this mean?

Thanks, /me