Arduino for STM32

All I want to do is wire up an ST7789 to my STM32 black pill board, over SPI.

I've wired it into SPI1, based on the multiple pinouts I've found online.

I use the "SPI" instance of SPIClass in arduino to talk to it.

I GET NOTHING.

Just the backlight.

I've done this fine for ESP32s, and Arduinos ...