From ce243820fe1aeeaf9fc211ca253533c4147d709e Mon Sep 17 00:00:00 2001
From: "William D. Jones" <thor0505@comcast.net>
Date: Mon, 11 Jan 2021 21:02:37 -0500
Subject: [PATCH] tools/litex_term: Convert some common scan codes into ANSI
codes on Windows.
---
litex/tools/litex_term.py | 46 +++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)
diff --git a/litex/tools/litex_term.py b/litex/tools/litex_term.py
index 48ef631d9..d67d1faec 100755
--- a/litex/tools/litex_term.py
+++ b/litex/tools/litex_term.py
@@ -36,6 +36,42 @@ if sys.platform == "win32":
def getkey(self):
return msvcrt.getch()
+
+ # getch doesn't return Virtual Keycodes, but rather
+ # PS/2 Scan Codes. Keycodes starting with 0xE0 are
+ # worth handling.
+ def escape_char(self, b):
+ return b == b"\xe0"
+
+ def handle_escape(self, b):
+ # UP
+ if b == b"H":
+ return b"\x1b[A"
+ # DOWN
+ elif b == b"P":
+ return b"\x1b[B"
+ # LEFT
+ elif b == b"K":
+ return b"\x1b[D"
+ # RIGHT
+ elif b == b"M":
+ return b"\x1b[C"
+ # HOME
+ elif b == b"G":
+ return b"\x1b[H"
+ # END
+ elif b == b"O":
+ return b"\x1b[F"
+ # INSERT
+ elif b == b"R":
+ return b"\x1b[2~"
+ # DELETE
+ elif b == b"S":
+ return b"\x1b[3~"
+ else:
+ # Ignore remaining- TODO: Maybe handle ESC eventually?
+ return None
+
else:
import termios
import pty
@@ -57,6 +93,12 @@ else:
def getkey(self):
return os.read(self.fd, 1)
+ def escape_char(self, b):
+ return False
+
+ def handle_escape(self, b):
+ return None
+
# Crossover UART ----------------------------------------------------------------------------------
from litex import RemoteClient
@@ -449,6 +491,10 @@ class LiteXTerm:
self.stop()
elif b == b"\n":
self.port.write(b"\x0a")
+ elif self.console.escape_char(b):
+ b = self.console.getkey()
+ ansi_seq = self.console.handle_escape(b)
+ self.port.write(ansi_seq)
else:
self.port.write(b)
except: