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1  Using Arduino / LEDs and Multiplexing / MAxim 7219 digital clock on: May 03, 2011, 01:40:06 pm
Hey guys I am having a weird issue with this digital clock I am creating. I have written a loop for it to count by seconds and nested the loos to increment the minutes and hours. That is all working fine, the problem is that it counts in HEX till 15 then switches to DEC  after that. Just wonder if any one can see why it is doing this. The time is being out via the Maxim 7219 serial interface chip to control the four seven segments i am using.

Quote
Serial.print(hour, DEC);
          if (hour<10){
      Serial.print("0");
    }
      led_print(hour, 2);
          Serial.print(minute, DEC);
          if (minute<10){
      Serial.print("0");
    }
    led_print(minute, 0);
          lc.setDigit(0,2,hour,false);                // Print the hour
          lc.setDigit(0,0,minute,false);              // Now the minutes


Ant help is very much appreciated.
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