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bigtreetech / BIGTREETECH-SKR-MINI-V1.1

ARM Cortex-M3 series STM32F103RCT6 chip with 32-bit CPU 72MHz. Equipped with highly modular open source firmware Marlin2.0, convenient for users DIY and secondary development, exempt from the worries of the core code;
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Adding UART documentation #30

Closed chris3081 closed 3 years ago

chris3081 commented 4 years ago

Hi,

I have raised a PR to include steps and the configurations to enable UART in the board.

the-banana-bird commented 4 years ago

Thank you for posting this. I suggest adding an additional step for TMC2209 drivers, since they can use these instructions with a few changes. Hopefully this can help someone in the future, because it took a lot of debugging and digging to discover the issue.

TMC2209 Extra Instructions:

Check out 4.3 UART Signals in the TMC2209 datasheet for more info. You need to have a UART address of 00 if you are doing one UART wire for each driver. You can do this easily by removing the MS1 and MS2 jumpers.