Radek

Send a detajl photo to TMC from both sides

My TMC2209 drivers have a jumper to communicate via UART. If they didn't communicate over the serial port to someone, there was a problem with the jumper. Unfortunately, your TMCs...

For the communication of the TFT display with Marlin, you must enable the codes listed in the config.ini header. The most important are: M503, M114 and M115

A TFT processor has multiple serial pins. If you don't mind losing the simulated Marlin mode, the pins in the EXP Connectors could be used. After a little FW modification...

One more note. There are two possible causes of your problem Faulty RX pin on TFT, or faulty TX pin on SKR. Are you sure the problem is on the...

https://github.com/bigtreetech/BIGTREETECH-TouchScreenFirmware/issues/2382#issuecomment-1035084997

Your TFT has a faulty pin on the TFT connector. So remap the serial connector and connect it to the EXP connector (According to the instructions in the link). If...

What SKR model do you have? I did not notice - SKR mini E3 V2 Your board has one EXP3 connector. The TFT uses two connectors EXP1 and EXP2 Bad...

ok

Use: Visual studio code + PlatformIO The source code is here: https://github.com/MarlinFirmware/Marlin/tree/bugfix-2.1.x/Marlin The configuration for comparison is here: https://github.com/MarlinFirmware/Configurations/tree/bugfix-2.1.x/config/examples/Creality/Ender-3%20Max https://github.com/MarlinFirmware/Configurations/tree/bugfix-2.1.x/config/examples/Creality/Ender-3/BigTreeTech%20SKR%20Mini%20E3%203.0