From 8402cd9683545436bd4690af6be8408f19052014 Mon Sep 17 00:00:00 2001
From: Philipp Stehle <anderschwiedu@gmail.com>
Date: Mon, 30 Sep 2024 20:11:19 +0200
Subject: [PATCH] print fopen errors

---
 src/fs_ext.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/fs_ext.c b/src/fs_ext.c
index e39d7cca..e9c55cfb 100644
--- a/src/fs_ext.c
+++ b/src/fs_ext.c
@@ -1,11 +1,13 @@
 
 #include "fs_ext.h"
 
+#include <errno.h>           // for errno
 #include <stdint.h>          // for uint8_t
 #include <stdio.h>           // for fopen, FILE
 #include <stdlib.h>          // for NULL, free
-#include <string.h>          // for strdup, strlen, strrchr
+#include <string.h>          // for strdup, strlen, strrchr, strerror
 #include "error.h"           // for NO_ERROR, ERROR_END_OF_FILE, ERROR_FILE_...
+#include "debug.h"           // for TRACE_INFO, TRACE_ERROR, TRACE_LEVEL_INFO
 #include "fs_port_config.h"  // for PATH_SEPARATOR
 #include "os_port.h"         // for osStrlen
 
@@ -37,6 +39,10 @@ FsFile *fsOpenFileEx(const char_t *path, char *mode)
     // Open the specified file
     fp = fopen(path, mode);
 
+    if (fp == NULL) {
+        TRACE_ERROR("Could not open file %s: %s\n", path, strerror(errno));
+    }
+
     // Return a handle to the file
     return fp;
 }