From a0bf66f9d83dbe75353d665de827f503d533c600 Mon Sep 17 00:00:00 2001
From: Tomas P <128642216+tpp-at-idx@users.noreply.github.com>
Date: Fri, 7 Nov 2025 09:50:21 +0100
Subject: [PATCH] Fix for display not coming on after poweron

---
 variants/thinknode_m2/ThinknodeM2Board.cpp | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/variants/thinknode_m2/ThinknodeM2Board.cpp b/variants/thinknode_m2/ThinknodeM2Board.cpp
index 332f1f67..05965103 100644
--- a/variants/thinknode_m2/ThinknodeM2Board.cpp
+++ b/variants/thinknode_m2/ThinknodeM2Board.cpp
@@ -3,12 +3,13 @@
 
 
 void ThinknodeM2Board::begin() {
+    pinMode(PIN_VEXT_EN, OUTPUT); 
+    digitalWrite(PIN_VEXT_EN, !PIN_VEXT_EN_ACTIVE); // force power cycle
+    delay(20); // allow power rail to discharge
+    digitalWrite(PIN_VEXT_EN, PIN_VEXT_EN_ACTIVE); // turn backlight back on
+    delay(120); // give display time to bias on cold boot
     ESP32Board::begin();
-    pinMode(PIN_VEXT_EN, OUTPUT); // init display
-    digitalWrite(PIN_VEXT_EN, PIN_VEXT_EN_ACTIVE); // pin needs to be high
-    delay(10); 
-    digitalWrite(PIN_VEXT_EN, PIN_VEXT_EN_ACTIVE); // need to do this twice. do not know why..
-    pinMode(PIN_STATUS_LED, OUTPUT); // init power led    
+    pinMode(PIN_STATUS_LED, OUTPUT); // init power led
   }
 
   void ThinknodeM2Board::enterDeepSleep(uint32_t secs, int pin_wake_btn) {