Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

  • State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 46 subscribers
  • Views 238 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADS1261EVM: COLLECT and COLLECTSETUP Commands

Akm Islam
Prodigy 40 points
Part Number: ADS1261EVM
Other Parts Discussed in Thread: ADS1261

Hi,

I'd like to know a detailed description regarding the COLLECT and COLLECTSETUP commands that the Delta-Sigma ADC Evaluation software uses. What low-level commands is it issuing to read all the samples?

  • 0
    TI__Mastermind 42261 points

    Hi Akm Islam,

    The ADS1261EVM commands are given in Table 7 in the EVM user's guide: https://www.ti.com/lit/pdf/sbau293

    You can use a logic analyzer or scope to probe the DIN pin on the ADC if you are interested in the actual commands being sent to the ADC. Refer to section 9.5.5 in the ADC datasheet to get a list of the commands that can be issued to the ADC. You can then cross reference this table with the digital communication you see on the scope / logic analyzer

    -Bryan

  • 0 in reply to Bryan Lizon86
    Prodigy 40 points

    Yes, I saw the table in the datasheet, but I'd like to know what the actual SPI commands are that the processor sends for "COLLECT" and "COLLECTSETUP." Without using a logic analyzer, can one figure out what these commands are?

  • 0 in reply to Akm Islam
    TI__Mastermind 42261 points

    Hi Akm Islam,

    The COLLECT and COLLECTSETUP commands are used by the GUI for the GUI - they do not inherently have any interaction with the ADC (though the COLLECT command does eventually call the RDATA command).

    Why do you want to know what these commands do? How will this help you work with the ADS1261?

    You can also review the ADS1261 example code: https://www.ti.com/lit/zip/sbac199. This might be more useful to help you understand how the firmware communicates with the ADC, as well as allow you to adapt the code to work in your own project

    -Bryan