Digital Discovery - SPI Configuration

[CarlosFerras]

Hello,

I'm using Digital Discovery to debug an SPI communication between a Nucleo-F429ZI and a thermal camera, where the clock frequency is set to 22.5 MHz. My problem is: now I'm just sending the value '0' to the sensor to that it returns the value of each pixel of the formed image. But the clock generated in WaveForms doesn't make much sense (see attached images). Maybe my settings are incorrect?

Thanks.

[attila]

Hi @CarlosFerras

Try to increase the sample rate.
Do a high frequency capture to see the timing between the clock and data signals.

What is the voltage level of the signal?
In the Supplies tool the IO voltage and logic threshold can be changed.

[CarlosFerras]

Hi @attila

Increasing the sample rate worked for me, as you can see in the image below.
I didn't have to change the threshold in the supply tool because, in my case, it is already set to the maximum value. The signal is 5V.

Thanks for the help ?