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lpc11e68 SPI effective rate

Question asked by Eran Rainer on Aug 2, 2018
Latest reply on Aug 2, 2018 by Chris Pflieger

Hi,

I'm using LPC11e68 system clock is set to 48MHz and SSP0 configured as SPI master @ 12MHz.

it seems like effective baud rate is much lower - DMA is not in used and from the analysis i made it seems like reads/writes to SSP0 DR registers stalls.

 

did anyone experience any similar performance issues with SPI?

 

i will appreciate any input.

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