Hi,
the read data of the ADS7828 is always 0x0 on every channel. (All Channels are connected to Voltages I can measure on the Inputs to the IC)
Here is the protocol:
Red = SCL
Blue = SDA
Green = Tristate activated
Yellow = SDA on the Pin of the IC
Here is what i do:
1. Write 0x9C to the control register (SD, PD1, PD0 all activte)
2. Read the result
More info:
The internal reference is ON for a long time. I Skipped the conversion time in the screenshot just to get it in one image. The result is always the same
As you can see in the readout it looks like the ADS7828 is trying to transmit something but the SDA line wont go to '1' but stays very low.
The communication should be ok because the ACKs are coming from the IC as you would expect them. I even tried the repeated start but without success.
Any ideas?
