How to trigger 8452 DRDY

[flying_dog]

I use the TI ADS9319.vi in the example and modify the waform1:Pin:DRDY to either active high or low. I then, run the program and manually set the GPIO1 either Vdd or GND and see no change in graphics (nor SCLK output). The program seems to be running and holds for the trigger event. Try to stop the program is very slow as well. It feel like the program cannot breadk the loop and white out the window for a while.

Thanks! 

[TheGeeze]

Hi,

First of all I want to confirm that you meant the TI ADS8319 shipping example, not the 9319.

Next, you mention changing the DRDY pin so that it is active high or low, is that the only change you made to the program?  Looking through the manual for the 8452, it looks like there are some changes that will need to be made to the timing parameters as well.

Why are you trying to modify this example?  Are you communicating with the 8319?

Here is a link to the hardware and software manual, that shows what to configure when using the DRDY pin.  Specifically, look at table 11-1.

I2C/SPI HW and SW Manual

Let me know if you have any further questions.

Thanks

Ryan