[SOLVED] Avoid accidental press of button !

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Raady Here

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Hi,

I have configured a port pin which is connected to press button(switch), if high which I will start a motor.And for this I simply applied a condition
if (PORTB.RB6){
// loops for running motors.
}.

But I need to make avoidance of any accidental press. For this I need to hold the button for 3 seconds then motor should start.

How do I check if it is hold on press for 3 seconds or not ? Should I configure any timer for this ?
Any suggestions please.

MPLAB v8.8 / dsPIC30F5011.

Regards,
Raady.
 

You can calculate time from system clock.
To check Button is hold, you can make a loop 3 seconds: if Button is pressed, but in 3 seconds is released (to make sure button is released, you can count button state greater than your LIMITATION), set Button is HOLD.
If in 3 seconds, Button is kept in pressed state, set button is held and turn your motor.
 

if u want to avoid accidental press button then use on counter till like of 50/100 then u can detect the keys and proceed the your work. because as ur keeping 3 second is good for confirming but for continous use of ur keypad will really irritated someone if u want to use install in any product.

use counter
detect key
proceed the key and change it state.
 

you can do this

Code: 
if (PORTB.RB6){
          delay for 3 seconds
          if (PORTB.RB6) //check again after delay 
          // loops for running motors.
}.
 
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