From 68fc1596542b13980a4ce4f1154683189cd2b463 Mon Sep 17 00:00:00 2001
From: Martin Lund <martin.lund@keep-it-simple.com>
Date: Sat, 10 Sep 2022 18:59:27 +0200
Subject: [PATCH] Fix listing of serial devices in MSYS2/Cygwin

We generally try to list serial devices by ID but in the MSYS2/Cygwin
environment serial devices are not available by ID and so we simply list
the basic serial device paths instead.
---
 src/tty.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/src/tty.c b/src/tty.c
index 8064ac1..4cbee06 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -54,8 +54,13 @@
 
 #ifdef __APPLE__
 #define PATH_SERIAL_DEVICES "/dev/"
+#define PREFIX_TTY_DEVICES "tty."
+#elifdef __CYGWIN__
+#define PATH_SERIAL_DEVICES "/dev/serial/by-id/"
+#define PREFIX_TTY_DEVICES "ttyS"
 #else
 #define PATH_SERIAL_DEVICES "/dev/serial/by-id/"
+#define PREFIX_TTY_DEVICES ""
 #endif
 
 #ifndef CMSPAR
@@ -1343,11 +1348,10 @@ void list_serial_devices(void)
         {
             if ((strcmp(dir->d_name, ".")) && (strcmp(dir->d_name, "..")))
             {
-#ifdef __APPLE__
-#define TTY_DEVICES_PREFIX "tty."
-                if (!strncmp(dir->d_name, TTY_DEVICES_PREFIX, sizeof(TTY_DEVICES_PREFIX) - 1))
-#endif
-                printf("%s%s\n", PATH_SERIAL_DEVICES, dir->d_name);
+                if (!strncmp(dir->d_name, PREFIX_TTY_DEVICES, sizeof(PREFIX_TTY_DEVICES) - 1))
+                {
+                    printf("%s%s\n", PATH_SERIAL_DEVICES, dir->d_name);
+                }
             }
         }
         closedir(d);