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lock project---password display problem.

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Moderators: Ajay Bhargav, Arun Kumar V, pdi33, Shailesh NAYAK, ۞ TPS ۞, shyam, sashijoseph, ExperimenterUK, DavesGarage	This thread is now closed

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kenleung

Sun Apr 19 2009, 09:19AM

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I am designing a project which is a keypad lock My problem is that if i want to hide the password being displayed by ******,how can i write the program? actually it is aimed to ensure that the persons standing behind cant see the passoword entered by the users.
thanks

rongo024

Sun Apr 19 2009, 11:26AM

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what is your display device??

aurangozeb,Bangladesh.

kenleung

Sun Apr 19 2009, 07:11PM

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lcd 32X04

Ajay Bhargav

Mon Apr 20 2009, 01:53AM

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well for every key pressed, display * instead of the key value.

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kenleung

Tue Apr 21 2009, 06:06AM

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yeah, exactly........how can we do?we write asm format

ExperimenterUK

Tue Apr 21 2009, 02:02PM

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kenleung wrote ...

yeah, exactly........how can we do?we write asm format

There really isn't a problem if you understand how the program works.
If you don't, this is a good time to study it and find out

Find the code where you get a character from the keyboard and pass it to the display routine.

Set a flag to show whenever you are in "Password" mode.
Whenever this flag is set, pass a "*" instead of the proper character.

Ajay Bhargav

Wed Apr 22 2009, 12:17AM

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are you designing your own project or you're using the one on website?

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kenleung

Wed Apr 22 2009, 11:12AM

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i am designing..but no clue on doing that function

ExperimenterUK

Wed Apr 22 2009, 03:10PM

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kenleung wrote ...

i am designing..but no clue on doing that function

Do you have any LCD display code written ?.
If so, please post it.
If not, take a look at the LCD tutorials in the tutorial section.

[ Edited Wed Apr 22 2009, 03:14PM ]