Problem with NewSoftSerial on PORTB

Projects Programming
1

I moved my SoftSerial tx_pin from 6 (PORTD,5) to 11 (PORTB,2). All I get is gibberish on the LCD. Has anybody else had problems with SoftSerial on portb?

2

This is the craziest thing. I moved the txpin and applied the following piece of code at the same time. I checked the pins are not cross defined.

void resetPot (void)
  //
  {
      pinMode(INC,OUTPUT);
      pinMode(POT_SELECT,OUTPUT);
      pinMode(UD,OUTPUT);
      digitalWrite(INC,HIGH);
      digitalWrite(POT_SELECT,SELECT);
      digitalWrite(UD,DOWN);
      for(char i=0;i++;i<100)
      {
        digitalWrite(INC, HIGH);   // sets the pin on
        //delayMicroseconds(50);     // pauses for 50 microseconds      
        digitalWrite(INC, LOW);    // sets the pin off
       // delayMicroseconds(50);     // pauses for 50 microseconds          
      }
      digitalWrite(INC,HIGH);
      digitalWrite(POT_SELECT,HIGH);
      delay(20); 
  }

Note I commented the delayMicroseconds(50) statements out. This way the code work. If I include them the gibberish on the LCD is actually a crashed state. Any takers?

3

If I use delay() it is ok. Any suggestions please?

4

Can you post all the code, often problems are elsewhere, for example

digitalWrite(UD,DOWN);

makes no sense in the above context because "DOWN" is not a standard symbol, maybe it's been defined somewhere else and maybe that definition was incorrect.

Rob

5

Marius:
This is the craziest thing.

Don't know about other crazy things, and can't say whether this contributes to any problems you are experiencing, but the following loop is never entered:

      for(char i=0;i++;i<100)
      {
          // Never gets here.  Really.  Never.
      }

Regards,

Dave

6

AWOL:
Never, ever?

You sure?

Yes.

Regards,

Dave

7 
 for(char i=0;i++;i<100)

The second "term" is the termination (continuation, more like) condition. It's zero the first time through the loop, so the loop doesn't do anything. You probably wanted for(char i=0;i<100; i++)

8

Rob,
Sorry for the long delay. I took some time off.
These are the defines. The rest of the code is a lot and mostly belongs to the party I am writing it for. Don't know if it is right to post it?

// POT
#define POT_SELECT 6
#define INC 1
#define UD 5
// Pot
#define UP 1
#define DOWN 0
#define SELECT 0
#define UNSELECT 1
9

Dave,
You found the problem. This is what you get when you still sit and code at 2 in the morning.

Thanks gents- sorted out.