MPC5746R SPI Problem

[qiaodeng]

Hi,

    I have two peripherals both of which are slave of DSPI_0. When only one of them works， I can read the right data from the SPI. But if I transfer data to peripheral B through SPI after peripheral A have just finished its job ,  I can not read the right data from the SPI.  Where can the problem come from ?

Regards,

Qiao

[PetrS]

Hi Qiao,

So the MPC5746R’s DSPI0 is a Master and communicates with two peripherals/Slaves.

What is the connection? Can you share schematic? What is your DSPI initialization and TX/RX code?

Could you also post what is really seen on SPI lines for a mentioned frames?

BR, Petr