From e5a3839d64192c984e2fa5c76450c77bd06dc36e Mon Sep 17 00:00:00 2001
From: Quency-D <hj_zzns@163.com>
Date: Wed, 27 May 2026 15:12:59 +0800
Subject: [PATCH] Optimize ADC readout

---
 variants/heltec_v4_r8/HeltecV4R8Board.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/variants/heltec_v4_r8/HeltecV4R8Board.cpp b/variants/heltec_v4_r8/HeltecV4R8Board.cpp
index f9a771df4..1fb123b2f 100644
--- a/variants/heltec_v4_r8/HeltecV4R8Board.cpp
+++ b/variants/heltec_v4_r8/HeltecV4R8Board.cpp
@@ -70,11 +70,11 @@ uint16_t HeltecV4R8Board::getBattMilliVolts() {
 
   uint32_t raw = 0;
   for (int i = 0; i < 8; i++) {
-    raw += analogRead(PIN_VBAT_READ);
+    raw += analogReadMilliVolts(PIN_VBAT_READ);
   }
   raw = raw / 8;
 
-  return (adc_mult * (3.3f / 4096.0f) * raw) * 1000;
+  return (adc_mult * raw);
 }
 
 const char* HeltecV4R8Board::getManufacturerName() const {