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I am using PIC18F26K22. Do you think my problem cause by PIC18F26K22?

Dear Ttemah,

I have just test your code(using CCS V4.114). The result is WRONG.
http://i657.photobucket.com/albums/uu294/longtupic/Testcode.jpg

Dear Ttemah,

Could you please test your code with distance less than 50m. Example:
- Point 1: (0.0002,0)
- Point 2: (0.0000,0)

I want to detect with between 10 - 50m only.

Thanks you adva ...

Thanks for your all answer.

I think this problem cause by all trigonometrical functions will be answer approximations value. And limits of digit by float type in CCS.

Here is my solution for my ...

Dear RF_Developer,

That is a big help. Thank you very much with your explaination. Now, I know that all trigonemtrical functions will be received the approximations result. BUT I need the the near ...

Hi Jochen Kochner,

I have the same problem when to use sin(), cos(), acos()...in CCS. Did you have a solution for this?

Thanks for your answer quickly.