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I2C bus question

 
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Fabri



Joined: 22 Aug 2005
Posts: 275

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I2C bus question
PostPosted: Thu May 29, 2008 2:24 am     Reply with quote
Hi to everybody,

I have just one question about ccs I2C bus routine. I wrote by myself I2C routine for PIC18F4520 some time ago. I try the same routine with PIC18F4525 and it doesn't work, otherwise with #use i2c library the system work right. I wrote i2c routine because i use i2c bus to talk with some external device on bus 3 meters long and with ccs library the system went in reset as soon as it received any burst noise, so I introduced timeout in i2c communication routine. Now to understand problem I'm checking ccs disassembled library. I found:
Code:

BTFSC 00.0

What does it mean ?
does it test address 0 and bit 0 ?


Thanks for help about,
Regards,
Fabri
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