rp2040 allows hardware SPI on corresponding pairs of pins: spi0 ⇒ Data/Clock: GPIO3/GPIO2, GPIO19/GPIO18, GPIO7/GPIO6 spi1 ⇒ Data/Clock: GPIO11/GPIO10, GPI15/GPIO14, GPIO27/GPI26 Pinout can be changed, but you need to make changes toCMakeList.txt(e.g.OUTPUT_DATA_PIN/OUTP...
For my first I based it from my test setup which used jumper wires but to make it easier to follow I've mapped the pinout to the cable. The cable is shown looking into the pins with the wires then numbered from 1 to 16 starting with the red wire. Below is a video showing how I...