DIY elrs radio

https://preview.redd.it/q0phtktpp7ng1.jpg?width=3024&format=pjpg&auto=webp&s=759c81e9141d8c7c9927649f7cd5ccff8994f5d5

im trying to build a elrs radio with a f405 dev board an ips screen and some joysticks and buttons. Has someone done something similar bc i cant get the stm32 to talk to the elrs module witch i know works bc i have tested it with my radiomaster pocket and a drone. this is my code developed on the stm32cube ide: https://github.com/sraykov08/TNTrc-radio