From 154b7d256c3f84f5df24568e47918932df105d4f Mon Sep 17 00:00:00 2001
From: Tim O'Brien <timo@t413.com>
Date: Thu, 27 Oct 2022 11:03:27 -0700
Subject: [PATCH 1/2] Powers off eink backlights before shutdown

- t-echo boards in particular need this
- follows the existing defines structure
---
 src/Power.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Power.cpp b/src/Power.cpp
index d3782a2a4..744b6360a 100644
--- a/src/Power.cpp
+++ b/src/Power.cpp
@@ -234,6 +234,9 @@ bool Power::setup()
 void Power::shutdown()
 {
 
+#if defined(USE_EINK)
+    digitalWrite(PIN_EINK_EN, LOW); //power off backlight first
+#endif
 
 #ifdef HAS_PMU
     DEBUG_MSG("Shutting down\n");

From 6146b773cf2678ee53947de49ada884bac16752e Mon Sep 17 00:00:00 2001
From: timo <timo@t413.com>
Date: Thu, 27 Oct 2022 17:59:53 -0700
Subject: [PATCH 2/2] Better #define guard for PIN_EINK_EN

---
 src/ButtonThread.h | 2 +-
 src/Power.cpp      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/ButtonThread.h b/src/ButtonThread.h
index c1fd770bc..088642099 100644
--- a/src/ButtonThread.h
+++ b/src/ButtonThread.h
@@ -159,7 +159,7 @@ class ButtonThread : public concurrency::OSThread
 
     static void userButtonDoublePressed()
     {
-#if defined(USE_EINK)
+#if defined(USE_EINK) && defined(PIN_EINK_EN)
         digitalWrite(PIN_EINK_EN, digitalRead(PIN_EINK_EN) == LOW);
 #endif
     }
diff --git a/src/Power.cpp b/src/Power.cpp
index 744b6360a..7443fc428 100644
--- a/src/Power.cpp
+++ b/src/Power.cpp
@@ -234,7 +234,7 @@ bool Power::setup()
 void Power::shutdown()
 {
 
-#if defined(USE_EINK)
+#if defined(USE_EINK) && defined(PIN_EINK_EN)
     digitalWrite(PIN_EINK_EN, LOW); //power off backlight first
 #endif