24 bit spi transfer

[Transidico]

Good morning,
I need to perform a 24-bit SPI transfer with mcxc242, with the clock in continuous mode.

How can I do this?

I tried making 3 packets of 8 in this way:

and 2 packets of 16 in this way:

As you can see from the images, using SPI_MasterTransferBlocking() sends me the clock for each data packet, but I need the clock to be continuous for 24 consecutive bits.

How can I get the clock to be continuous as in the image below?

Many thanks for any replies.

Best regards

[Pablo_Ramos · Accepted solution]

Hi @Transidico,

You can use the SDK example spi_interrupt as a reference.

In this example, a transmission of 64 data bytes is performed consecutively, as shown in the following frame.

Best Regards,
Pablo

[Transidico]

Dear Pablo,

thanks a lot for your message, I have resolved it by using SPI in DMA mode, without interrupt.

Thank you very much.

Best regards.