topic Re: problems with spi in LPC Microcontrollers

problems with spi

Nadia — Tue, 25 May 2021 11:11:55 GMT

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.

Re: problems with spi

Omar_Anguiano — Thu, 27 May 2021 23:13:32 GMT

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.

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

Re: problems with spi

Nadia — Fri, 28 May 2021 09:32:33 GMT

@Omar_Anguiano

Thank you very much for your reply.

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

Re: problems with spi

Omar_Anguiano — Mon, 31 May 2021 19:55:17 GMT

Hello

You may use Config Tools to enable that clock:

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