topic Re: LPC55S69 EVK Board - SPI Testing in LPC Microcontrollers

LPC55S69 EVK Board - SPI Testing

SrinathVelavan — Wed, 05 Apr 2023 05:17:30 GMT

I am trying to test out the SPI interface on the LPC55S69 EVK board. Tried the spi_polling_b2b_transfer_master code from the SDK and the Master Start was successfully obtained with loop-back mechanism.

Now, am looking to get the same output without the help of loopback mechanism. Any help on this will be much appreciated.

Also, Is the LPC55S69 and LPC4322FET100E connected together on the EVK? If so, what is the use of the LPC4322 on the EVK board?

#spi #lpc55s69

Re: LPC55S69 EVK Board - SPI Testing

ZhangJennie — Wed, 05 Apr 2023 08:18:09 GMT

EVK board equipted On-board (Link2) Debug probe, LPC4322 is the MCU for the debug probe.

On board LPC4322 is neither SPI master nor slave.

LPC55 SPI communication.

The spi_polling_board2board_master example shows how to use spi driver as master to do board to board transfer with polling.

n this example, one spi instance as master and another spi instance on othereboard as slave. Master sends a piece of data to slave, and receive a piece of data from slave. This example checks if the data received from slave is correct.

In order to run this demo, two LPCXpresso55s69 boards are needed.

Thanks,

Jun Zhang

Re: LPC55S69 EVK Board - SPI Testing

SrinathVelavan — Wed, 05 Apr 2023 08:37:16 GMT

Thank you very much for the clarification. I ll try the same with the 2 EVKs.

Re: LPC55S69 EVK Board - SPI Testing

SrinathVelavan — Wed, 05 Apr 2023 08:39:12 GMT

In the second board, How do I configure it to be the slave in the polling code example?