I'm trying to collect data from the circuit I built using an SPI interface off the raspberry Pi. I would like to measure the current and the voltage of my circuit. and the signal I would like to measure has a maximum frequency of 1khz and is a square wave.
Would it be necessary to use two separate SPI interfaces to try and collect data simultaneously to calculate the current (Voltage across a resistor), or would using a single SPI interface with two slaves be sufficient? I was thinking that the clock frequency for my SPI interface is much greater than 1k so it would not really matter. Is that thinking correct?