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I need help with I2C

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coma

New Member
im have so much trouble programing a I2C read function for VB 6 is there anyone out there that can help me!!!! :?: :!:
 

coma

New Member
custom hardware.
2 input lines (SDA, SCL)
2 output lines
each with buffers on them...

tomorrow ill post the schemaic
 

coma

New Member
here is the schem

I am using the parallel port, i can send data in serial but it doesn recieve anything... so i cant tell if what ive sent is correct

here is my setup, thanks to the help of this forum :)
 

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Dialtone

New Member
Just a wild guess, but you may not be reading the status port at the right time. Your program loop should work like this simplified sequence.
1. Write clock & data to port data register
2. Read status register bits and compare to write
3. Clear clock and data bits
4. Repeat loop for next bit

If you try to read the status AFTER you have cleard the data, you will not see it.
Dialtone
 
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