topic Re: SPI Setup Menu in Model-Based Design Toolbox (MBDT)

SPI Setup Menu

peaces — Wed, 26 May 2021 08:13:59 GMT

What can we do to change these settings while running a program on the processor from the SPI setting menu shown in the picture?

Re: SPI Setup Menu

mariuslucianand — Wed, 26 May 2021 19:30:17 GMT

Hello,

Same thread is opened here https://community.nxp.com/t5/NXP-Model-Based-Design-Tools/SPI-Setup-Menu/m-p/1282847#M6096

Let's solve the issue there.

Regards,

Marius

Re: SPI Setup Menu

Shawn442 — Wed, 02 Jun 2021 03:19:24 GMT

They do this because this is the nature of SPI bus and this is how bus communications is done. Look:

Data transmission

Every SPI clock cycle is a full duplex data transmission. The master sends a bit on the MOSI pin and the slave reads it, while the slave sends a bit on the MISO pin and the master reads it. This sequence is true even if you only need an one-directional data transfer.

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