I Have the folowing installation:
And I want that the Master sends something to the slave and the slave sends something to the master at same time. But I get this:
D10 = Clock
D9 = Master out Slave in
D8 = Slave out Master in
You can see that the Slave is sending to late (red line).
I´m using TI RTOS and i used several frequences from 1000 Hz up to 4 MHz. And on 4MHz the Slave is sending nothing. On 40kHz the Slave is sending 2 Bytes to late. I´m at loss what to do.