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Code Improvement

Former Member

Hello Everyone!

 

I have posted my code in the attachement below which I have been using to measure pulse widths for 5 to 15 microsecond pulses. I am giving pulses from function generator with 1 or 2 Hz frequency. But my code makes one count every four microseconds so it measures pulse widths if the pulse is 4 microsecond or 8 or 12 and so on but not the values in between , for example for 10 microsecond pulse it measures either 8 or 12. I thought of using a external fast counter to improve get the accuracy but I have come to know that 16 MHz clock of arduino is more than enough to get the right results so if someone can help me out here with my code I would be extremely grateful to all of you.

 

Thanks all in advance!

Attachments:
7776.code.txt.zip

  • I think you`ll have to have a look in Wiring_Pulse.C and make alterations either to that file or call system variables directly from there, the path is something like: arduino-0022\hardware\arduino\cores\arduino

    I seem to remember reading a long time ago that most attempts to alter these in a sketch get automatically overwritten (ignored) by the bootloader, so you need to alter the actual arduino files that it pulls from to get it to work.

    and Do make a backup of the original first.

     

    all the best image