From 85de193845bae37e1a19a87372e8c3d187f0ecb2 Mon Sep 17 00:00:00 2001
From: Ben Meadors <benmmeadors@gmail.com>
Date: Wed, 15 Jan 2025 06:46:12 -0600
Subject: [PATCH] Fix NRF52 default append write mode of files (#5858)

* Fix NRF52 default append write mode of files

* Inside the lock
---
 src/SafeFile.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/SafeFile.cpp b/src/SafeFile.cpp
index 825ba3028..f874164ae 100644
--- a/src/SafeFile.cpp
+++ b/src/SafeFile.cpp
@@ -9,7 +9,9 @@ static File openFile(const char *filename, bool fullAtomic)
     LOG_DEBUG("Opening %s, fullAtomic=%d", filename, fullAtomic);
 #ifdef ARCH_NRF52
     lfs_assert_failed = false;
-    return FSCom.open(filename, FILE_O_WRITE);
+    File file = FSCom.open(filename, FILE_O_WRITE);
+    file.seek(0);
+    return file;
 #endif
     if (!fullAtomic)
         FSCom.remove(filename); // Nuke the old file to make space (ignore if it !exists)
@@ -59,6 +61,9 @@ bool SafeFile::close()
         return false;
 
     spiLock->lock();
+#ifdef ARCH_NRF52
+    f.truncate();
+#endif
     f.close();
     spiLock->unlock();