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Can't get negative value from ds1621

 
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Mozr
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Can't get negative value from ds1621
PostPosted: Mon Jan 01, 2007 1:46 pm     Reply with quote
Please, give me an idea how to convert 11111111 10000000 and such neg. temperature values to real negative value?
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Mon Jan 01, 2007 2:23 pm     Reply with quote
Look at the CCS driver file, DS1621.c. It has a function to return
the full temperature range of the chip. Here's an excerpt from
the driver file:
Code:

// Returns degrees F (-67 to 257)

signed long read_full_temp() {


The driver is in this folder:
c:\program files\picc\drivers\ds1621.c
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