problems with spi

[Nadia]

Hi all, I'm having problems with SPI, I'm not able to get it to go fast and the signal doesn't look staggered, I'm using the SPI_MasterTransferBlocking function and the LPC54628 test board.

I am using the SPI_MasterTransferBlocking function and the LPC54628 test board. If anyone knows how to make the signal go at a frequency of 100 Hz and not be staggered.

Thank you very much.
Best regards.

[Omar_Anguiano]

Hello Nadia.

Hope you are well. The 100Hz baud rate is not reachable when the flexcomm has attached the 12Mhz clock. I suggest you use a lower flexcomm source so you can reach 100Hz.
I used the FRO_HF clock and divided the frequency to reach 1Mhz.

Omar_Anguiano_0-1622157196034.png

Let me know if this is helpful, if you have more questions do not hesitate to ask me.
Best regards,
Omar

[Nadia]

@Omar_Anguiano 

Thank you very much for your reply.

Could you tell me how I can enable that clock please?

[Omar_Anguiano · Accepted solution]

Hello

You may use Config Tools to enable that clock:

Omar_Anguiano_0-1622490826436.png

Omar_Anguiano_1-1622490875603.png

Let me know if this is helpful, if you have more questions do not hesitate to ask me.
Best regards,
Omar