Taking keyboard input

[misel0019]

I need to take a keyboard input but I can't use getch(); because I wanna start a counter. If counter exceeds it will not wait for the keyboard.

I give you the image of flowchart.

Means the circuit may attach with pc or not. While attach with pc it will wait 5sec to take keyboard input. If input ok then go to main program or wait 5sec and seek for input. If 5sec is over it also goes to main.

Any suggestion.

Regards
Misel

[misel0019]

http://yfrog.com/55flowp
flowchart is here

[SherpaDoug]

Use kbhit() to see if a character is coming in. Only if there is a character call getc(), else count time. If you use a software UART you must call kbhit() at least 10 times the serial bit rate to make sure you don't miss the first bit from the keyboard. For a hardware UART you have up to 2 character lengths to catch the character.
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[misel0019]

thanks for the reply

trying to do that

[misel0019]

thanks SherpaDoug for your suggestion.

[misel0019]

thanks it works