From 4519308b9f45a94f54b304071b7bc6d74f0c145d Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jean-Fran=C3=A7ois=20Nguyen?= <jf@lambdaconcept.com>
Date: Mon, 28 Jun 2021 16:27:39 +0200
Subject: [PATCH] tools.flterm: warn and continue after failed TIOCMBIC ioctl.

---
 lambdasoc/tools/flterm.py | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/lambdasoc/tools/flterm.py b/lambdasoc/tools/flterm.py
index 0cdec2a..2348c1f 100755
--- a/lambdasoc/tools/flterm.py
+++ b/lambdasoc/tools/flterm.py
@@ -10,6 +10,7 @@ import asyncio
 import asyncserial
 import serial
 import argparse
+import traceback
 
 
 if sys.platform == "win32":
@@ -134,10 +135,15 @@ class Flterm:
         self.output_only = output_only
 
         self.port = asyncserial.AsyncSerial(port, baudrate=speed)
-        if serial.__version__[0] == "2":
-            self.port.ser.setRTS(False)
-        else:
-            self.port.ser.rts = False
+        try:
+            if serial.__version__[0] == "2":
+                self.port.ser.setRTS(False)
+            else:
+                self.port.ser.rts = False
+        except OSError:
+            # FIXME: The TIOCMBIC ioctl failed. This port is probably a pseudo TTY.
+            traceback.print_exc()
+            print("[FLTERM] Failed to clear RTS bit. Continuing anyway...")
 
     def init(self):
         if not (self.upload_only or self.output_only):
-- 
2.30.2