One button multiple functions

pcleats

Hello all,

I have a project that I would like to convert to the propeller chip. My challenge is that I need to be able to control all the functions with a single switch.

The project is battery powered, and voltage is applied to the circuit when a multiple conductor cable is connected.

1st press turns the power on to the circuit
2nd press turns on a wireless receiver
3rd press ???
4th Press ???
Last press turns off the system if held for more than 3 seconds

I would like to be able to add addition functions to the button such as the ability to activate additional feature/cogs if needed.

Also I need a better way to monitor the current being drawn from the system. I am currently using a circuit that is attached.

If someone would like to see the code I am currently running I would be happy to provide it.

I am very new to the propeller, and just beginning to learn how to use it.

Thanks

Patrick

Leon

You could use a long key press to select different modes. Within modes, use short key presses. Some sort of feedback to the user would be advisable.

Leon

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Amateur radio callsign: G1HSM
Suzuki SV1000S motorcycle

Ken Peterson

Morse code! Just kidding....

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Basil

Hi [noparse]:)[/noparse]

How about something like this...

loop:
timer == 0
start timer on rising edge of button
end timer on falling edge of button

if timer > 100ms & timer < 2000ms
   button_state++
   if button_state > 4, then button_state == 0

   if buttonstate == 1
     do function 1
   elseif buttonstate ==2
     do function 2
   elseif buttonstate ==3
     do function 3
   elseif buttonstate ==4
     do function 4

if timer > 2000ms
   turn_off


repeat loop

It is proably the most inefficient way to do this but hey, im at work and my mind is numb :P

Alec

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-Alec

My our page

pcleats

Alec,

I will try this and let you know. Thanks for the info

Patrick

Ken Peterson

If you are going to maintain a number of states like that, it's a good idea to provide state feedback to the user as Leon suggested, unless the function itself makes it obvious.

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