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how to make aprogram to show 0-99 on seven segment display

 
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mmdcet



Joined: 07 Jan 2013
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how to make aprogram to show 0-99 on seven segment display
PostPosted: Mon Jan 07, 2013 4:24 am     Reply with quote

hello everybody
i am new to pic programming. i want to make a program to count from 0 to 99 unsing pic16f877a and 7segment display. can any body tell me the code. i tried a code of my own but it was too lengthy.
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Ttelmah



Joined: 11 Mar 2010
Posts: 19498

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PostPosted: Mon Jan 07, 2013 4:35 am     Reply with quote

Look, seriously, think...

0 to 99. One line of code a for loop.

The hard part is the display itself, and this is not generic. A 'seven segment' display, can immediately be common cathode or common anode. Two different connection patterns, while the digit output will depend totally on the connections _you_ choose. The display can also be static or multiplexed. A total of _billions_ of total combinations possible....
If you search the forum, you will find threads about how to drive seven segment displays, including how to make the code easier with lookup tables for the bits to be driven, and using a timer interrupt if the display is multiplexed. Find one of these that is close to your hardware, and either modify it to match your hardware, or modify your hardware to match it.
Once you have the display going, then add the line to count.

There is no 'generic' solution to this.

Best Wishes
Zloi



Joined: 26 Oct 2012
Posts: 11
Location: Croatia

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PostPosted: Wed Jan 09, 2013 3:52 am     Reply with quote

Sneak peek example EX_LED.C

Could be useful to you.

BR
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