# St7789 display on radpberry pi pico

**URL:** <https://forums.pimoroni.com/t/st7789-display-on-radpberry-pi-pico/22133>\
**Category:** Raspberry Pi\
**Created:** [May 8, 2023, 3:07am UTC](https://forums.pimoroni.com/t/st7789-display-on-radpberry-pi-pico/22133 "2023-05-08T03:07:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Souhaiel](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@Souhaiel](https://forums.pimoroni.com/u/Souhaiel)\
**Post date:** [May 8, 2023, 3:07am UTC](https://forums.pimoroni.com/t/st7789-display-on-radpberry-pi-pico/22133/1 "2023-05-08T03:07:21Z")

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Hello everyone . If someone could help me solving these problem that will be very helpful for me.  
I am working on raspberry pi pico in c++ where i have to interface the st7789 320x240 tft display. I already wrote my own libraray to do that but i found today the pimironi firmware. I already made the setup for pmoroni to work with my project cmake file in c++. I am trying now to interface the display . I used st7789 driver and picographics. I can set the brightness correctly using the bl pin but i cannt get any character written on the display or change the baground . I use the spiPins struct to define the spi instance and spi pinout used by me . But i didnt found any place to define the rst pin for the display . May that cause the problem ? If someone can share with me a simple code to print hello world on the display with the possiblity of decalring the pinout i used on the pico.