From 34d37961c37be9048215466007b1e4c93f73440c Mon Sep 17 00:00:00 2001
From: Christian Ferbar <5595808+ferbar@users.noreply.github.com>
Date: Sun, 28 Feb 2021 18:02:02 +0100
Subject: [PATCH] ADC fix: GPIO0 not usable as output if ADC_VCC is used
 (#1557)

---
 esphome/components/adc/adc_sensor.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/esphome/components/adc/adc_sensor.cpp b/esphome/components/adc/adc_sensor.cpp
index 9b1f452131..c6e2141725 100644
--- a/esphome/components/adc/adc_sensor.cpp
+++ b/esphome/components/adc/adc_sensor.cpp
@@ -16,7 +16,9 @@ void ADCSensor::set_attenuation(adc_attenuation_t attenuation) { this->attenuati
 
 void ADCSensor::setup() {
   ESP_LOGCONFIG(TAG, "Setting up ADC '%s'...", this->get_name().c_str());
+#ifndef USE_ADC_SENSOR_VCC
   GPIOPin(this->pin_, INPUT).setup();
+#endif
 
 #ifdef ARDUINO_ARCH_ESP32
   analogSetPinAttenuation(this->pin_, this->attenuation_);