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CC2541: CC2541 SPI slave mode problem

DAVID CUI
Intellectual 610 points
Part Number: CC2541


dear all:

I use the CC2541 ,SPI peripherals, used as SLAVE mode, CC2541 in working mode, SPI can receive data normally, but CC2541 open POWERSAVING mode, SPI can not receive data, how can I operate?

thank you!

  • 0
    TI__Genius 11740 points
    Hi David,

    Generally, you'd need to have a handshake or something indicating a ready signal to wake the device up prior to SPI activity. NPI implements this feature in newer devices, I'm sure you could do this with with just a GPIO configured to wake on falling edge or rising edge - and then you should be okay to receive SPI data.

    I've contacted an expert for additional feedback -

    Regards,
    Rebel
  • 0 in reply to A. Rebel
    TI__Mastermind 25035 points
    Hi David,

    You can look at the HostTestRelease project for an example on using SPI with POWER_SAVING using MRDY and SRDY signals.

    Best wishes