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KSDK SPI Driver performance

Question asked by Hy Mai Employee on Nov 19, 2015
Latest reply on Nov 25, 2015 by xiangjun.rong

Dear KSDK support,


K22FN512 SPI clock set up to be around 18Mhz KDS 3.0 and KSDK 1.2 There seems to be quite a large delay between each transferred byte in the SPI data package. Attached is the generated Processor Expert code from the KSDK1.2 and the screen capture to that shows there is 81uSec delay in between each bytes compares to capture from a PSOC device which shows only 11uSec.


Please advise on how to improve the performance of the SPI. BTW the customer has also tested with KSDK 1.3 and the result is the same.


Regards, hy

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