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ADS124S08EVM: Setup questions and script issues

Cassius Peter
Prodigy 30 points
Part Number: ADS124S08EVM
Other Parts Discussed in Thread: ADS124S08

Hello, TI forums. 

I am attempting to set up the aforementioned part to test if this A/D is what my company needs. I want to use the Eval board to measure a 4-pin RTD, and have said RTD (well, decade box simulator) hooked up in accordance to the user's guide. My next attempt was to try and run the 4-pin RTD pre-defined script, but that is causing trouble. I've attached the script I'm running to this post. Whenever I run it, The command line says "Unrecognized command: pause" and then "Client went away", at which point I can't seem to do anything else. If I try to reset and then rerun the script, nothing happens, and if I step through, the program will act like it's stepping through, but nothing actually changes. 

I've tried manually sending all the register writes using the register map, and that does seem to work, but I don't know how to send a start command this way. If anyone can help tell me what I'm doing wrong, I would greatly appreciate it. 

  • +1
    TI__Guru 52496 points

    Hi Cassius Peter,

    I am not sure why you are receiving the issue with the PAUSE command, I ran this script on my EVM with no issue. The PAUSE command yields a pop-up box that must be acknowledged before continuing

    However, you should be able to manually select your register settings and use the Data Analysis tool to take and visualize data. You can access this tool by clicking the icon in the first image below. Then, the data analysis tool pops up in a separate window, as shown in the second image. The "collect data" button is for collecting data, as its name implies. However, before collecting data, make sure to set the correct number of samples. As shown, the default is 2048 samples, while the default data rate is 20 SPS. This will take >100 seconds to complete, so you should consider either reducing the number of samples or increasing the data rate before hitting the "collect data" button

    Once the data collection process is complete, you will see the results in a window similar to that shown in the third image (I had nothing connected to my EVM, hence the straight line of data).

    The ADS124S08 was designed for measuring temperature sensors, including RTDs, so this device should work well for your application

    -Bryan