topic SPI receive buffer doesn't equal send buffer when connecting SIN with SOUT. Help! in S32 Design Studio

SPI receive buffer doesn't equal send buffer when connecting SIN with SOUT. Help!

samerbastawy — Mon, 25 Sep 2017 10:37:35 GMT

I have initialized an SPI instance, configured both slave and master configurations (same phase, polarity and everything), than connected SIN (PTB3) with SOUT (PTB1).

I am expecting to receive what I send when calling LPSPI_DRV_MasterTransfer() but for some reason that doesn't happen. Project is attached below. Please help.

Original Attachment has been moved to: lpspi_transfer_example.zip

Re: SPI receive buffer doesn't equal send buffer when connecting SIN with SOUT. Help!

jiri_kral — Wed, 27 Sep 2017 13:17:25 GMT

Hi Samer,

in your project you setup once SPI_0 as a master device and as a next step you setup the very same peripheral as a slave device. In attachment is fixed project - it is working with direct connection between pins PTB3 and PTB1 (J2 pin 9 and J4 pin 7 on EVB). For more details you can look at this tutorial related to SPI basic usage/architecture.

Jiri