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blackice_ii: fix UART RTS/CTS direction.
authorIvan Grokhotkov <ivan@espressif.com>
Mon, 8 Jun 2020 21:13:28 +0000 (23:13 +0200)
committerwhitequark <whitequark@whitequark.org>
Thu, 11 Jun 2020 14:10:55 +0000 (14:10 +0000)
Pin numbers match the P0/P1 signals in the schematic, but the
direction is reversed. Fix by setting role="dce".

Ref. https://github.com/mystorm-org/BlackIce-II/blob/master/hardware/BlackIce.pdf

nmigen_boards/blackice_ii.py patch | blob | history

diff --git a/nmigen_boards/blackice_ii.py b/nmigen_boards/blackice_ii.py
index a679bda966500d8dc9655d963281b0ff10713aca..2187d60686bb9e06edd53986e41e586d95c182dd 100644 (file)
--- a/nmigen_boards/blackice_ii.py
+++ b/nmigen_boards/blackice_ii.py
@@ -30,7 +30,8 @@ class BlackIceIIPlatform(LatticeICE40Platform):
 
         UARTResource(0,
             rx="88", tx="85", rts="91", cts="94",
-            attrs=Attrs(IO_STANDARD="SB_LVCMOS", PULLUP=1)
+            attrs=Attrs(IO_STANDARD="SB_LVCMOS", PULLUP=1),
+            role="dce"
         ),
 
         SRAMResource(0,