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vaibh_p
vaibh_p
Associate III
February 12, 2020
Solved

ST25R3911B SPI Check

  • February 12, 2020
  • 3 replies
  • 872 views

Hi ,

After starting power supply , without any configuration od ST25R3911B, can we directly read the "IC Identity Register 0x3F" just to check the SPI with the controller is working or not ? Will it give the value specified in the datasheet or should I have to do some configurations before reading that?

    This topic has been closed for replies.
    Best answer by Ulysses HERNIOSUS

    Hi,

    yes IC identity register value will appear immediately at startup, no additional oscillator startup or anything needed.

    Regards, Ulysses

    3 replies

    dbgarasiya
    dbgarasiya
    Senior
    February 12, 2020

    how can you say that it is possible ?

    vaibh_p
    vaibh_pAuthor
    Associate III
    February 12, 2020

    I just want to check my SPI is working or not, writing to any register may cause some problem so I just want to read any register.

    Ulysses HERNIOSUS
    Ulysses HERNIOSUSBest answer
    ST Technical Moderator
    February 12, 2020

    Hi,

    yes IC identity register value will appear immediately at startup, no additional oscillator startup or anything needed.

    Regards, Ulysses

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