From b18fcf816f7c78e9929c98fbeb90a3f0ff5997fe Mon Sep 17 00:00:00 2001
From: tyeth <tyethgundry@googlemail.com>
Date: Fri, 8 Nov 2024 16:59:31 +0000
Subject: [PATCH] Disallow format file system if brownout, allow  otherwise

---
 src/provisioning/tinyusb/Wippersnapper_FS.cpp | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/provisioning/tinyusb/Wippersnapper_FS.cpp b/src/provisioning/tinyusb/Wippersnapper_FS.cpp
index 5083e2c4..061f2880 100644
--- a/src/provisioning/tinyusb/Wippersnapper_FS.cpp
+++ b/src/provisioning/tinyusb/Wippersnapper_FS.cpp
@@ -106,9 +106,18 @@ Wippersnapper_FS::Wippersnapper_FS() {
 
   // If a filesystem does not already exist - attempt to initialize a new
   // filesystem
-  if (!initFilesystem()){ //} && !initFilesystem(true)) {
-    setStatusLEDColor(RED);
-    fsHalt("ERROR Initializing Filesystem");
+  if (!initFilesystem()) {
+    if (WS.brownOutCausedReset) {
+      // try once more for good measure
+      delay(10); // let power stablise after failure
+      if (!initFilesystem()) {
+        // no lights, save power as we're probably on a low battery
+        fsHalt("Brownout detected. Couldn't initialise filesystem.");
+      }
+    } else if (!WS.brownOutCausedReset && !initFilesystem(true)) {
+      setStatusLEDColor(RED);
+      fsHalt("ERROR Initializing Filesystem");
+    }
   }
 
   // Initialize USB-MSD