Hola! Veréis, he construido la matriz led de instructables de 24x6 (esta: http://www.instructables.com/id/Make-a-24X6-LED-matrix/?ALLSTEPS) y funciona perfecta. El tema es que el sketch que trae lo que hace es mostrar un texto predefinido, sin posibilidad de animaciones ni nada.
Este es el codigo:
#define LT{B01000000,B01000000,B11100000,B01000000,B01001000,B00110000}
#define LU{B00000000,B00000000,B10001000,B10001000,B10011000,B01101000}
#define LV{B00000000,B00000000,B10001000,B10001000,B01010000,B00100000}
#define LW{B00000000,B00000000,B10001000,B10101000,B10101000,B01010000}
#define LX{B00000000,B10001000,B01010000,B00100000,B01010000,B10001000}
#define LY{B00000000,B10001000,B10001000,B01111000,B00001000,B01110000}
#define LZ{B00000000,B11111000,B00010000,B00100000,B01000000,B11111000}
#define SPACE{B00000000,B00000000,B00000000,B00000000,B00000000,B00000000}
int latchPin = 10;
int clockPin = 13;
int dataPin = 11;
int clock = 9;
int Reset = 8;
int latchPinPORTB = latchPin - 8;
int clockPinPORTB = clockPin - 8;
int dataPinPORTB = dataPin - 8;
int i = 0;
long scrolling_word[6];
int array_turn=0;
byte your_text[10][6]={BH,BO,BL,BA,SPACE,BM,BI,BG,BU,BI};//PUT YOU TEXT HERE
void setup(){
Serial.begin(9600);
pinMode(dataPin,OUTPUT);
pinMode(clockPin,OUTPUT);
pinMode(latchPin,OUTPUT);
pinMode(clock,OUTPUT);
pinMode(Reset,OUTPUT);
digitalWrite(Reset,HIGH);
digitalWrite(Reset,LOW);
setupSPI();
}
void display_word(int loops,byte word_print[][6],int num_patterns,int delay_langth){// this function displays your symbols
i = 0;// resets the counter fot the 4017
for(int g=0;g<6;g++)//resets the the long int where your word goes
scrolling_word[g] = 0;
for(int x=0;x<num_patterns;x++){//main loop, goes over your symbols
// you will need to find a better way to make the symbols scroll my way is limited for 24 columns
for(int r=0;r<6;r++)//puts the buildes the first symbol
scrolling_word[r] |= word_print[x][r];
for (int z=0;z<6;z++){//the sctolling action
for(int p=0;p<6;p++)
scrolling_word[p] = scrolling_word[p] << 1;
// end of the scrolling funcion
for(int t=0;t<delay_langth;t++){// delay function, it just loops over the same display
for(int y=0;y<6;y++){// scaning the display
if(i == 6){// counting up to 6 with the 4017
digitalWrite(Reset,HIGH);
digitalWrite(Reset,LOW);
i = 0;
}
latchOff();
spi_transfer(make_word(0x01000000,y));// sending the data
spi_transfer(make_word(0x00010000,y));
spi_transfer(make_word(0x00000100,y));
latchOn();
delayMicroseconds(800);//waiting a bit
latchOff();
spi_transfer(0);// clearing the data
spi_transfer(0);
spi_transfer(0);
latchOn();
digitalWrite(clock,HIGH);//counting up with the 4017
digitalWrite(clock,LOW);
i++;
}
}
}
}
finish_scroll(delay_langth);
}
void finish_scroll(int delay_scroll){// this function is the same as the funcion above, it just finishing scrolling
for (int n=0;n<24;n++){
for(int h=0;h<6;h++)
scrolling_word[h] = scrolling_word[h] << 1;
for(int w=0;w<delay_scroll;w++){
for(int k=0;k<6;k++){
if(i == 6){
digitalWrite(Reset,HIGH);
digitalWrite(Reset,LOW);
i = 0;
}
latchOff();
spi_transfer(make_word(0x01000000,k));
spi_transfer(make_word(0x00010000,k));
spi_transfer(make_word(0x00000100,k));
latchOn();
delayMicroseconds(800);
latchOff();
spi_transfer(0);
spi_transfer(0);
spi_transfer(0);
latchOn();
digitalWrite(clock,HIGH);
digitalWrite(clock,LOW);
i++;
}
}
}
}
byte make_word (long posistion,byte turn){
byte dummy_word = 0;
for(int q=0;q<8;q++){
if(scrolling_word[turn] & (posistion<<q))
dummy_word |= 0x01<<q;
}
return dummy_word;
}
void loop() {
display_word(1,your_text,10,15);// calls for the display_pattern function and says that int loop = 15(if you do more loop the pattern whould scrole slower).
}
void latchOn(){
bitSet(PORTB,latchPinPORTB);
}
void latchOff(){
bitClear(PORTB,latchPinPORTB);
}
void setupSPI(){
byte clr;
SPCR |= ( (1<<SPE) | (1<<MSTR) ); // enable SPI as master
//SPCR |= ( (1<<SPR1) | (1<<SPR0) ); // set prescaler bits
SPCR &= ~( (1<<SPR1) | (1<<SPR0) ); // clear prescaler bits
clr=SPSR; // clear SPI status reg
clr=SPDR; // clear SPI data reg
SPSR |= (1<<SPI2X); // set prescaler bits
//SPSR &= ~(1<<SPI2X); // clear prescaler bits
delay(10);
}
byte spi_transfer(byte data)
{
SPDR = data; // Start the transmission
while (!(SPSR & (1<<SPIF))) // Wait the end of the transmission
{
};
return SPDR; // return the received byte, we don't need that
}
Me gustaría hacer alguna animación, aunque fuera sencilla y para ello, había pensado en cambiar el valor de los #define en mitad del loop que dibuja los caracteres y así conseguir una animación. El tema es que no se como hacerlo. He probado a insertar otro loop dentro del mismo pero nada, estoy muy perdido.
Espero que alguno pueda guiarme un poco.
PD: He eliminado varios define por no excederme en longitud en el mensaje.
Muchas gracias y un saludo!!
