P8X32A Resistive Touch Buttons Problem

Comments

• Sawmiller Posts: 276

  2014-07-11 18:48 edited 2014-07-11 18:48

  here's one i'm playing with. have to dampen my finger thou

  /*
    robo lights....
   
  */
  
  #include "simpletools.h"                      // Include simple tools
  
  
  int  testbuttons();
  
  
  int i;
  volatile int temp = 0;
  
  int main()    // Main function
  {
                                                                               
    //cog_run(&testbuttons, 40);  
                                      
    while (1)
    {
                           
      
      if(testbuttons())                  // check the buttons, if P7 is pressed, blink the lights
      {
        for(i=16;i<=23;i++)
        {
          high(i);
          pause(50);
        }
      
        for(i=23;i>=16;i--)
        {
          low(i);
          pause(50);
        }
        pause(100); 
      } 
      temp = 0;
                
    }    
               
  }
  
  int testbuttons()      // test the 7 button on quickstart board
  {
     
    high(7);
    reverse(7);  
    if(input(7)== 0)
      temp = 1;
      return temp;
  }
  

  hope it helps
  dan
• jazzed Posts: 11,803

  2014-07-11 18:59 edited 2014-07-11 18:59

  The preferred way to read the touch buttons is with getButtons() in the SimpleIDE workspace folder file:
  
  ~Documents\SimpleIDE\Propeller GCC Demos\QuickStart\Whack-a-mole\qswam.c
  

  /*
   * Get all buttons at once
   * Run this function from HUB if compiled for LMM.
   */
  int getButtons()
  {
      int n = 16;
      int result  = -1;
      int reading =  0;
      int pins = 0xFF;
      OUTA |= pins;               //output high to buttons
  
  
      while(n--)
      {
          DIRA |= pins;           //output high to buttons
          DIRA ^= pins;           //switch to input
          reading = pins;
          msleep(2);              //wait for RC time pause(2) using simpletools.h
          reading &= INA;          //return button states
          result  &= reading;
      }
      result = ~result & 0xFF;
      return result;
  }
  
  
  

  
  Still, "finger licking good" works best.
• Sawmiller Posts: 276

  2014-07-12 08:43 edited 2014-07-12 08:43

  Hey those look like spin!
  Great, didn't know I could use those.
  I do need a reference manual on all these commands
  Dan
• Sawmiller Posts: 276

  2014-07-12 14:23 edited 2014-07-12 14:23

  ok on my first code up there " robo lights" if you insert a pause(10); in the testbuttons() function right after reverse(7);
  it will work with a ordinary finger. i guess the time lets the voltage die off a little.
  anyways, fun playing with .
  dan
• NWCCTV Posts: 3,629

  2014-07-12 16:40 edited 2014-07-12 16:40

  have to dampen my finger thou

  Works without doing this for me. If I dampen my finger the LED seems to stay on.