From 0e7cdb3df651701f97e6abd3e5abbfb4821a5f94 Mon Sep 17 00:00:00 2001
From: Gunnar Skjold <gunnar.skjold@gmail.com>
Date: Wed, 8 Apr 2026 14:03:00 +0200
Subject: [PATCH] Prevent boot loop if voltage is outside operating range

---
 lib/HwTools/src/HwTools.cpp | 3 ++-
 src/AmsToMqttBridge.cpp     | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/HwTools/src/HwTools.cpp b/lib/HwTools/src/HwTools.cpp
index 3f3693c8..67207cba 100644
--- a/lib/HwTools/src/HwTools.cpp
+++ b/lib/HwTools/src/HwTools.cpp
@@ -664,7 +664,8 @@ bool HwTools::isVoltageOptimal(float range) {
             lastVccRead = now;
         }
 		if(vcc > 3.4 || vcc < 2.8) {
-			maxVcc = 0; // Voltage is outside the operating range, we have to assume voltage is OK
+            maxVcc = 0;
+			return true // Voltage is outside the operating range, we have to assume voltage is OK
 		} else if(vcc > maxVcc) {
 			maxVcc = vcc;
 		} else {
diff --git a/src/AmsToMqttBridge.cpp b/src/AmsToMqttBridge.cpp
index c0d09647..bd22c03c 100644
--- a/src/AmsToMqttBridge.cpp
+++ b/src/AmsToMqttBridge.cpp
@@ -482,6 +482,7 @@ void setup() {
 		debugW_P(PSTR("Voltage is outside optimal range (%.2fV)"), allowedDrift);
 		if(gpioConfig.apPin != 0xFF && digitalRead(gpioConfig.apPin) == LOW) {
 			debugW_P(PSTR("AP button is pressed, skipping voltage wait"));
+			break;
 		} else if(bootCycles < MAX_BOOT_CYCLES) {
 			int secs = MAX_BOOT_CYCLES - bootCycles;
 			if(deepSleep) {