How to connect multiple SPI Devices using MicroPython?

[neliel123]

Hi,
How do you connect two SPI devices in one microcontroller using MicroPython?
I could not find an example (or maybe I don't know the correct keyword).

I have a Raspberry Pi Pico W with a TFT Display and MFRC522 RFID reader. They both used SPI. How do you connect those two in my Pico and how can I program them using MicroPython?

Still learning about MicroPython

[robert-hh]

You can connect them both at the same SPI bus with CLK, MOSI, MISO. Only the CS pins must be different. You use the same SPI object for both devices and use the CS pins to address them. If they run at different speeds, you can use spi.init(baudrate=xxx) to change the speed as requested.

[mcauser]

For the visual learners:

mcu       device1   device2   device3
mosi ---- mosi ---- mosi ---- mosi
miso ---- miso ---- miso ---- miso
clk ----- clk ----- clk ----- clk
cs1 ----- cs    .-- cs    .-- cs
cs2 -----------`         /
cs3 --------------------`