From bf642c496d39c3503b12cd098c083e977475a27f Mon Sep 17 00:00:00 2001
From: Dave Allie <dave@daveallie.com>
Date: Tue, 30 Dec 2025 15:59:38 +1100
Subject: [PATCH] Open file for write should truncate file to match SD.h
 implementation

---
 libs/hardware/SDCardManager/src/SDCardManager.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libs/hardware/SDCardManager/src/SDCardManager.cpp b/libs/hardware/SDCardManager/src/SDCardManager.cpp
index 832452e..f55d506 100644
--- a/libs/hardware/SDCardManager/src/SDCardManager.cpp
+++ b/libs/hardware/SDCardManager/src/SDCardManager.cpp
@@ -208,7 +208,7 @@ bool SDCardManager::openFileForRead(const char* moduleName, const char* path, Fs
     return false;
   }
 
-  file = sd.open(path, FILE_READ);
+  file = sd.open(path, O_RDONLY);
   if (!file) {
     Serial.printf("[%lu] [%s] Failed to open file for reading: %s\n", millis(), moduleName, path);
     return false;
@@ -225,7 +225,7 @@ bool SDCardManager::openFileForRead(const char* moduleName, const String& path,
 }
 
 bool SDCardManager::openFileForWrite(const char* moduleName, const char* path, FsFile& file) {
-  file = sd.open(path, FILE_WRITE);
+  file = sd.open(path, O_RDWR | O_CREAT | O_TRUNC);
   if (!file) {
     Serial.printf("[%lu] [%s] Failed to open file for writing: %s\n", millis(), moduleName, path);
     return false;