From 369016acc952eda75ebbd53fe74380cb617dea67 Mon Sep 17 00:00:00 2001
From: Florent <florent@frizoncorrea.fr>
Date: Tue, 7 Jul 2026 10:20:03 -0400
Subject: [PATCH] introduce shutdownPeripherals in NRF52Board to prepare for
 shutdown

---
 src/helpers/NRF52Board.cpp         | 6 +++++-
 src/helpers/NRF52Board.h           | 1 +
 variants/lilygo_techo/TechoBoard.h | 4 ++--
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/helpers/NRF52Board.cpp b/src/helpers/NRF52Board.cpp
index beee32126f..088ddc23c4 100644
--- a/src/helpers/NRF52Board.cpp
+++ b/src/helpers/NRF52Board.cpp
@@ -298,7 +298,7 @@ float NRF52Board::getMCUTemperature() {
   return temp * 0.25f; // Convert to *C
 }
 
-void NRF52Board::powerOff() {
+void NRF52Board::shutdownPeripherals() {
   // Power off the display if any
 #ifdef DISPLAY_CLASS
   display.turnOff();
@@ -318,6 +318,10 @@ void NRF52Board::powerOff() {
   // Flush serial buffers
   Serial.flush();
   delay(100);
+}
+
+void NRF52Board::powerOff() {
+  shutdownPeripherals();
 
   // Enter SYSTEMOFF
   uint8_t sd_enabled = 0;
diff --git a/src/helpers/NRF52Board.h b/src/helpers/NRF52Board.h
index cbf4cd498d..dba15f974e 100644
--- a/src/helpers/NRF52Board.h
+++ b/src/helpers/NRF52Board.h
@@ -50,6 +50,7 @@ class NRF52Board : public mesh::MainBoard {
   virtual uint8_t getStartupReason() const override { return startup_reason; }
   virtual float getMCUTemperature() override;
   virtual void reboot() override { NVIC_SystemReset(); }
+  virtual void shutdownPeripherals();
   virtual void powerOff() override;
   virtual bool getBootloaderVersion(char* version, size_t max_len) override;
   virtual bool startOTAUpdate(const char *id, char reply[]) override;
diff --git a/variants/lilygo_techo/TechoBoard.h b/variants/lilygo_techo/TechoBoard.h
index e957d2e577..867fc24cf9 100644
--- a/variants/lilygo_techo/TechoBoard.h
+++ b/variants/lilygo_techo/TechoBoard.h
@@ -23,8 +23,8 @@ class TechoBoard : public NRF52BoardDCDC {
     return "LilyGo T-Echo";
   }
 
-  void powerOff() override {
-    NRF52Board::powerOff();
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
     #ifdef LED_RED
     digitalWrite(LED_RED, HIGH);
     #endif