Rs232 to ESP32

good, I’m just starting with hassio and I need help. I want to take the weight of a scale by rs232 to an ESP32, I made it run on Arduino and now I would like to integrate it into Home Assistant. I used the help of Custom UART, but with my little knowledge of programming I could not make it work, I did not find other help, can someone pass me a link or where to see more about the subject?
Thank you so much
Best regards
Kaesar

There are 3 uart projects to get inspiration from here DIY Examples — ESPHome

hi nickrout, thanks for replying. If I am trying to use them for my project, the one that best suits me I think is the mitsubishiheatpump, but I lack more programming knowledge …
Thank you so much
Cheers
Kaesar