From 117b25ae0788994845bec3565a1b91eb458dbebb Mon Sep 17 00:00:00 2001
From: Jamie <jamie@eevitronics.jp>
Date: Tue, 6 Jan 2026 22:28:15 +0900
Subject: [PATCH] Updated initSd to stop trying when the SD card can be read,
 but no file system was found (#6)

---
 src/main.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main.cpp b/src/main.cpp
index 3bfb7e6..9e89a6d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -132,12 +132,17 @@ static void initSd(void)
     bool ok = false;
     for (int i = 0; i < 16; i++)
     {
-        if (f_mount(&sFatFs, "0:", 1) == FR_OK)
+        FRESULT mountResult = f_mount(&sFatFs, "0:", 1);
+        if (mountResult == FR_OK)
         {
             ok = true;
             sIsSdCardMounted = true;
             break;
         }
+        else if (mountResult == FR_NO_FILESYSTEM)
+        {
+            break;
+        }
     }
     if (!ok)
     {