From b576c4d8d52b61e2547a5b9942ea050fa0eece0c Mon Sep 17 00:00:00 2001
From: SPRESENSE <41312067+SPRESENSE@users.noreply.github.com>
Date: Mon, 7 Nov 2022 12:24:04 +0900
Subject: [PATCH] tools/flash.sh: Support /dev/ttyUSBX on WSL environment

The WSL environment can have "/dev/ttyUSBX" for USB device.
So, Use Windows .exe only when UART port is Windows COM port.
---
 sdk/tools/flash.sh | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/sdk/tools/flash.sh b/sdk/tools/flash.sh
index 724e0833e..83415be4c 100755
--- a/sdk/tools/flash.sh
+++ b/sdk/tools/flash.sh
@@ -80,16 +80,6 @@ esac
 # Exec file extension postfix
 EXEEXT=""
 
-# WSL/WSL2 detection
-if [ "${PLATFORM}" == "linux" ]; then
-	if [ "$(uname -r | grep -i microsoft)" != "" ]; then
-		# WSL/WSL2 is a linux but USB related SDK tools
-		# should use windows binary.
-		PLATFORM=windows
-		EXEEXT=".exe"
-	fi
-fi
-
 # Option handler
 # -b: UART Baudrate (default: 115200)
 # -c: UART Port (default: /dev/ttyUSB0)
@@ -120,6 +110,18 @@ if [ "${UPDATE_ZIP}" != "" ]; then
 	exit
 fi
 
+# WSL/WSL2 detection
+if [ "${PLATFORM}" == "linux" ]; then
+	if [ "$(uname -r | grep -i microsoft)" != "" ]; then
+		if [[ "$UART_PORT" == COM* ]]; then
+			# WSL/WSL2 is a linux but USB related SDK tools
+			# should use windows binary.
+			PLATFORM=windows
+			EXEEXT=".exe"
+		fi
+	fi
+fi
+
 # Check loader version
 ${SCRIPT_DIR}/bootloader.py -c