Hi there, I am back. Now I am reading this document:
TMC2130-V3.0 Module User Manual - Shen Zhen Big Tree Tech https://grobotronics.com/images/companies/1/TMC2130-V3.0RM.pdf?1600171444657
I am reading the following product at the same time:
TMC2130 V3.0 SPI Stepper Motor StepStick Mute Silent Driver with Heatsink for 3D Printer Control Board 4 Packs - KingPrint, Amazon, £31 for 4 (£7.8 each) https://www.amazon.co.uk/gp/product/B07RN7QP7V/ref=ppx_yo_dt_b_asin_title_o02_s01?ie=UTF8&psc=1