TheBackShed.com

Home	JAQForum Ver 24.01
Log In or Join
Active Topics
Local Time 14:19 10 Nov 2025	Privacy Policy
Jump to

Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.

Forum Index : Microcontroller and PC projects : Pin rerved at startup error message

Author

Message

f2cf1g
Newbie

Joined: 18/11/2016
Location: United Kingdom
Posts: 13

Posted: 07:45am 19 Oct 2017

Copy link to clipboard

Print this post

Hi forum. I am getting the error message:

Error: Pin 2 is reserved on startup

after entering this command line on the console prior to running an LCD test program:

OPTION LCDPANEL ILI9341,L,2,7,5

I am doing this in the context of a program which has previously run OK. Who or what has reserved this pin and for what? The firmware version is 5.04.05 on a 28 pin chip. Thanks.

Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9749

Posted: 08:15am 19 Oct 2017

Copy link to clipboard

Print this post

Hi there.

Type OPTION LIST and press ENTER.
This will show you what options are currently set, and you can then see what previously set option has reserved pin 2.

Once you see which one has reserved pin 2, OPTION DISABLE that one, to free up pin 2 again.

That SHOULD do it.

Smoke makes things work. When the smoke gets out, it stops!

Phil23
Guru

Joined: 27/03/2016
Location: Australia
Posts: 1667

Posted: 10:10am 19 Oct 2017

Copy link to clipboard

Print this post

Grogster said Once you see which one has reserved pin 2, OPTION DISABLE that one, to free up pin 2 again.

Presume you are meaning either...

OPTION LCDPANEL DISABLE
or
OPTION TOUCH DISABLE

Once you've determined what's using pin 2.

Also, OPTION RESET reads as thought it would reset everything.

Cheers.Edited by Phil23 2017-10-20

f2cf1g
Newbie

Joined: 18/11/2016
Location: United Kingdom
Posts: 13

Posted: 11:52am 19 Oct 2017

Copy link to clipboard

Print this post

Hi Grogster and Phil23
All has become clear now, many thanks. I don't know why I didn't come across this issue when I was developing the code nine months or so ago. Anyway, its all running as it used to, thanks again.
Roy

Print this page

To reply to this topic, you need to log in.