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Problem with software hanging after pressing keypad fast

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saurav_sdpl

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Their are two cases in which my product enters into softwarwe hang mode.

1. Power-ON condition

2. When i press key-pad very fast,

What could be the possible reason and solution for this
 

blueroomelectronics

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software hang

1. Poor power supply decoupling, did you put 0.1uf caps on all digital IC power pins?

2. Your software has bugs or poor error trapping.
 

nvd

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Re: software hang

Please provide more information. What type of capacitors may work?
 

sloven_1

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Re: software hang

CHANGE THE SUPPLY
 

sn_burki

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Re: software hang

Please explain how you circuit gets hangged? I disaprears the display and go to some strange behavior or it comes out of its purpose? any ways you should see the routine which you have written for key scan.
 

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