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ADS1299: RESET OpCode not working as expected

R S31
Prodigy 70 points


After issuing the RESET OpCode to the ADS1299-FE all registers (including ID) seem to be zeroed and not set to the default values. What could be the reason for that?

  • 0
    Prodigy 70 points
    Follow up:
    When I issue the SDATAC command directly after RESET, the registers are set to their default values. So RESET alone zeroes the registers and a subsequent SDATAC restores the defaults. Is this behavior documented somewhere?
  • 0 in reply to R S31
    TI__Mastermind 38745 points
    Hey R S31,

    The device will not let you read registers unless the SDATAC command has been issued. So you weren't actually reading all zeros, you weren't reading at all!

    You can find info about this in the startup flow chart on page 58 as well as the command descriptions beginning on page 35 of the datasheet.

    Regards,
    Brian Pisani