From b5a80a5c03a1a75ed48baaf582a1567501d742f4 Mon Sep 17 00:00:00 2001
From: Edward Hill <ecgh@chromium.org>
Date: Tue, 10 Jan 2023 23:51:35 +0000
Subject: util: Improve uart_stress_tester.py

Ignore UTF8 decode errors when reading UART output. We don't care
what data is read while flushing during setup, and any errors during
the test will still be detected and reported.

BUG=b:227228605
BRANCH=none
TEST=uart_stress_tester.py -t 10 -d <raw_ec_uart> <raw_cpu_uart>

Change-Id: Ie12a3d8a4259f50ec38a85777ae0932f56e4dff1
Signed-off-by: Edward Hill <ecgh@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/4153075
Code-Coverage: Zoss <zoss-cl-coverage@prod.google.com>
Reviewed-by: Mark Hasemeyer <markhas@google.com>
---
 util/uart_stress_tester.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/util/uart_stress_tester.py b/util/uart_stress_tester.py
index 05976889d6..8abb71d144 100755
--- a/util/uart_stress_tester.py
+++ b/util/uart_stress_tester.py
@@ -194,7 +194,7 @@ class UartSerial:
         if self.serial.inWaiting() == 0:
             time.sleep(1)
 
-        return self.serial.read(self.serial.inWaiting()).decode()
+        return self.serial.read(self.serial.inWaiting()).decode(errors="ignore")
 
     def prepare(self):
         """Prepare the test:
-- 
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