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blastronics
Joined: 04 Jul 2005
Posts: 64
Helped: 3
Location: Between heaven and earth
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 23 Oct 2006 18:27 Degree C to degree F and vise versa |
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im doing a PIC project that controls a digital temperature sensor.
My problem is how to convert the temperature from deg C to Deg F and vise versa.
I need a routine for this...
Anybody have done this before?
p.s.
im using PIC16F877
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lambtron
Joined: 02 Nov 2005
Posts: 256
Helped: 26
Location: Portland, OR
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23 Oct 2006 18:55 Re: Degree C to degree F and vise versa |
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What programming language are you using? c/c++ or assembler?
It is quite simple in c/c++: F = 1.8 * C + 32
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jhbbunch
Joined: 21 Feb 2006
Posts: 222
Helped: 16
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24 Oct 2006 6:21 Re: Degree C to degree F and vise versa |
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| It might be easier if you make it F = 18*C + 320 and adjust the decimal point on your display. That way you can do shift C four places and add it to C shifted 1 place which is the same as 16*C + 2*C = 18*C. Then add this to the 320. The shifts and add would need to be done in 16 bit math, but it's all integer math and quite simple to do.
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