add USB-UART links for orangecrab

diff --git a/HDL_workflow/microwatt.mdwn b/HDL_workflow/microwatt.mdwn
index 43ff4aa45cb702c45b58767b4853d9cf7e963dce..997d29aae0a7eaa034e437058b296de8ca596521 100644 (file)
--- a/HDL_workflow/microwatt.mdwn
+++ b/HDL_workflow/microwatt.mdwn
@@ -131,3 +131,13 @@ instead of the one recommended as a submodule
     mkdir -p /usr/share/nextpnr/xilinx-chipdb
     cp xilinx/*.bin /usr/share/nextpnr/xilinx-chipdb
     cp -aux xilinx/external/prjxray-db /usr/share/nextpnr
+
+# Additional Useful Info for UART <-> USB Serial Interface Through OrangeCrab's Built-in USB Interface
+
+This uses OrangeCrab's built-in USB interface, rather than needing a
+separate USB-serial adapter. see the following for further details:
+
+* <https://github.com/antonblanchard/microwatt/pull/347#issuecomment-1058800570>
+* <https://github.com/antonblanchard/microwatt/pull/347#issuecomment-1058834790>
+
+