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Forum: Locked Topics radiobuttons issues


Author: John Mayer (215)
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I am having some problems with pushbuttons on my board.

I have a Codepiece which should write increment a value and show it on 
the LCD, when i press the button.

For some reason does this code only work for one button on my board. 
When i change the input to another button, it starts at the state where 
the button is high, and then goes back to low.

It increments the value once at the start, without the button being 
pressed.

But it reacts correctly when i press the button.

code attached

: Moved by Admin
Author: matzetronics (Guest)
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John Mayer wrote:
> I have a Codepiece

Unfortunately we don't have this code - and without it its impossible to 
tell what goes wrong. Please post the code or attach it.

Author: John Mayer (215)
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Code here
Buttonleft and buttonright increment the value when it's beeing pressed, 
but buttondown is the problem. the value gets incremented once 
eventhough the button hasn't been pressed.
switch(state)
      {

      case 0:
        if(buttonright_pressed())        // -- right
        {
          state= 1;
        }
        if(buttondown_pressed())        // left
        {
             state= 4;
        }
        if(buttonleft_pressed())
        {
          state = 5;
        }
      break;
//-----------------------------------------------------------//
      case 1:
        if(!(buttonright_pressed()))
          {
          buttom_timer = TIM_100_MSEC;
        state = 3;

          }
      break;

      case 4:
        if(!(buttondown_pressed()))
         {
          buttom_timer = TIM_100_MSEC;
           state = 2;

         }
      break;

      case 5:
        if(!(buttonleft_pressed()))
          {
           buttom_timer = TIM_100_MSEC;
           state = 6;

          }
      break;
//------------------------------------------------------------//
      case 2:
        if(!--buttom_timer)
          {
          tx_cmd = 1;
          xQueueSend(Queue1,&tx_cmd,0);
          tx_cmd = 0;
          state = 0;

          }
      break;
      case 3:
        if(!--buttom_timer)
          {
            tx_cmd = 2;
          xQueueSend(Queue1,&tx_cmd,0);
          tx_cmd = 0;
            state = 0;

          }
      break;

      case 6:
        if(!--buttom_timer)
          {
             tx_cmd = 3;
             xQueueSend(Queue1,&tx_cmd,0);
             tx_cmd = 0;
            state = 0;

          }
       break;

        }

: Edited by User
Author: Andreas Schwarz (andreas) (Admin) Flattr this
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Which microcontroller? Which board? Which LCD? Which compiler?

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