Post by thread:PIC16C74A to AD7869 (14-bit a/d, d/a system)

I've inherited a project using a 16C74A. I need to use a DAC to output an analog voltage to an oxygen sensor. In any event, we're using a Analog Devices 14-bit I/O system (AD7869). We're currently using the SCL/SDA pins for I2C communications with a 24LC16, which works fine. I also am using a RS232 interface, which employs a VB app I programmed with a MAX232 chip to the PIC, which also works great. So my problem is I cannot get the AD7869 going. I will use both the ADC and DAC, but am first trying to get the DAC working. I'm using the RB6 for serial clock and RB7 for serial data. I believe I'm sending the correct timing signals and streams of bits for DAC latch uptake/conversion. I would appreciate *ANY* insight into this situation. I am unable to change out the AD7869, i.e. I'm required to use it. Please respond by email: spam_OUTmitake2000TakeThisOuTyahoo.com __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com