Forum: Mikrocontroller und Digitale Elektronik RGB-LED-Ansteuerung über MAX6965


von André (Gast)


Lesenswert?

Habe das Problem, dass ich die PWM nicht einstellen kann.
Eigentlich sollte ich jede Einzelne LED für sich ansteuern.
Die Led leuchten bei mir aber nur alle gleich hell und wenn ich an
der Scheinbaren PWM was ändere bleiben die einzelnen LED gleich.
Hier ist mein Code.
Falls mir jemand ein guten Tipp hatt, wie das geht wär ich sehr
Dankbar.







#pragma symbols
#pragma small
#pragma DEBUG OBJECTEXTEND CODE
#include <reg517.h>
#include <i2c_bus.h>
#include <string.h>
#include <stdio.h>
#define wtime_fast 2
#define wtime_slow 4
#define wtime_ackr 7
#define wtime_ackw 5

  bit error=0;

void warte(int zeit)
{

  int i;
  for (i=1;i < (10*zeit);i++);

}

void i2c_start()
{

  sda = 1;
  scl = 1;
  warte(wtime_slow);
  sda = 0;
  warte(wtime_slow);
  scl = 0;
  warte(wtime_slow);

}

void i2c_stop()
{

  warte(wtime_fast);
  sda = 0;
  warte(wtime_slow);
  scl = 1;
  warte(wtime_slow);
  sda = 1;
  warte(wtime_fast);
  scl = 1;
  warte(wtime_slow);

}

void i2c_ack_r()
{

  sda=0;
  scl=1;
  warte(wtime_ackr);
  scl=0;
  sda=1;

}

void i2c_ack_w()
{

  sda = 1;
  warte(wtime_ackw);
  scl = 1;
  warte(wtime_slow);
  error = sda;

  scl = 0;

}

void i2c_write_byte(char send)
{

  char j;
  for (j=0;j<8;j++){
    sda = send & (0x80>>j);
    scl = 1;
    warte(wtime_slow);
    scl = 0;
    warte(wtime_slow);
  }

}

char i2c_read_byte(void)
{

  unsigned char recv=0, j;
  for (j=0;j<8;j++){
    scl = 1;
    warte(wtime_slow);
    recv=sda | (recv << 1);
    warte(wtime_slow);
    scl = 0;
  }
  return recv;

}

main()
  {





    i2c_start();           /*Slave Adresse*/
i2c_write_byte(0x40);
      i2c_ack_w();
      i2c_write_byte(0x01);  /*Blink Phase 0
                                                Register*/
      i2c_ack_w();
      i2c_write_byte(0x00);  /*O0-O7 LOW
                                              impendance*/
      i2c_ack_w();
                i2c_stop();
    i2c_start();           /*Slave Adresse*/
i2c_write_byte(0x40);
      i2c_ack_w();
      i2c_write_byte(0x03);  /*RAM */

      i2c_ack_w();
      i2c_write_byte(0xFF);  /*O0-O7 low
                                                impendance*/
      i2c_ack_w();
                i2c_stop();

    i2c_start();
      i2c_write_byte(0x40); /*Slave Adresse*/
      i2c_ack_w();
      i2c_write_byte(0x09);  /*Blink Phase 1
                                                Register*/
      i2c_ack_w();
      i2c_write_byte(0x00);  /*O0-O7low
                                                impendance*/
      i2c_ack_w();
                i2c_stop();





    i2c_start();         /*Slave Adresse*/
      i2c_write_byte(0x40);
      i2c_ack_w();
      i2c_write_byte(0x0E);  /*Master, O8
                                                Intensity Register*/
      i2c_ack_w();
      i2c_write_byte(0xC5);  /*Master , O8 PWM */
      i2c_ack_w();
                i2c_stop();

    i2c_start();         /*Slave Adresse*/
          i2c_write_byte(0x40);
                  i2c_ack_w();

      i2c_write_byt(0x0F); /*Configurations
                                             Register*/
  i2c_ack_w();

      i2c_write_byte(0x40);/*O8 impendance
                                             (Blink disabled)*/
             i2c_ack_w();

                i2c_stop();



    {

          i2c_start();        /*Slave Adresse*/
      i2c_write_byte(0x40);
      i2c_ack_w();
      i2c_write_byte(0x10);  /*O2, O1 Intensity Register*/
      i2c_ack_w();
      i2c_write_byte(0xFF);  /*O2, O1 PWM*/
      i2c_ack_w();
                 i2c_stop();



    i2c_start();        /*Slave Adresse*/
      i2c_write_byte(0x40);
      i2c_ack_w();
      i2c_write_byte(0x11);  /*O3, O2 Intensity
                                                Register*/
      i2c_ack_w();
      i2c_write_byte(0x54);  /*O3 , O2 PWM*/
      i2c_ack_w();
                i2c_stop();


                i2c_start();
      i2c_write_byte(0x40);/*Slave Adresse*/

      i2c_ack_w();
      i2c_write_byte(0x12);  /*O5, O4
                                               Intensity Register*/
      i2c_ack_w();
      i2c_write_byte(0xDC);  /*O5, O4 PWM*/
      i2c_ack_w();
                i2c_stop();


    i2c_start();
      i2c_write_byte(0x40); /*Slave Adresse*/
      i2c_ack_w();
      i2c_write_byte(0x13);/*O7, O6 Intensity
                                              Register*/
      i2c_ack_w();
      i2c_write_byte(0xDC);/*O7 , O6 PWM */
      i2c_ack_w();
                i2c_stop();

  }

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