From 77e98d15fb8277538301c5b111858fb403da74a9 Mon Sep 17 00:00:00 2001
From: Edward Firmo <94725493+edwardtfn@users.noreply.github.com>
Date: Wed, 11 Dec 2024 23:55:30 +0100
Subject: [PATCH] Initialize default_vref to 1100mV

To keep consistency with v4 and avoid another warning on ESP32 standard.
---
 esphome/components/adc/adc_sensor_esp32_v5.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/esphome/components/adc/adc_sensor_esp32_v5.cpp b/esphome/components/adc/adc_sensor_esp32_v5.cpp
index d963779a41..042b1b2edf 100644
--- a/esphome/components/adc/adc_sensor_esp32_v5.cpp
+++ b/esphome/components/adc/adc_sensor_esp32_v5.cpp
@@ -77,6 +77,9 @@ void ADCSensor::setup() {
         .unit_id = unit_id,
         .atten = this->attenuation_,
         .bitwidth = ADC_BITWIDTH_DEFAULT,
+#if !defined(USE_ESP32_VARIANT_ESP32S2)
+        .default_vref = 1100,  // Initialize default_vref to 1100mV
+#endif  // not USE_ESP32_VARIANT_ESP32S2
     };
     if (adc_cali_create_scheme_line_fitting(&cali_config, &handle) == ESP_OK) {
       this->calibration_handle_ = handle;