I need to control an external digital potentiometer (setting the variable resistance wiper position) with a STM32F3DISCOVERY MCU, via SPI interface.
The digital potentiometer is an AD5293.
I just need to change the variable resistor wiper position. I don't need to read values from the external digital potentiometer, I just have to set the wiper position to a desired one and nothing more.
After setting up the SPI interface (using the MCU as the master), I need to fisically link the STM32F3 to the AD5293 to send the data input.
My question is:
which pin (or pins) of the STM32F3 should I use to insert the wire to connect the two devices?
Thank you in advance for your answers!