From 9e81dc7ebe2b63c87ae829e170a8b66f6eb9c72f Mon Sep 17 00:00:00 2001
From: ldebat <ldebat@hotmail.com>
Date: Thu, 29 Sep 2022 21:17:22 +0200
Subject: [PATCH] Offers possibility to deactivate default INPUT_PULLUP pin
 mode

---
 Encoder.h | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Encoder.h b/Encoder.h
index 9ed35ee..dac6a1b 100644
--- a/Encoder.h
+++ b/Encoder.h
@@ -51,6 +51,10 @@
 #define ENCODER_ARGLIST_SIZE 0
 #endif
 
+#if defined(ENCODER_USE_PULLUP) || !defined(ENCODER_DO_NOT_USE_PULLUP)
+#define ENCODER_USE_PULLUP
+#endif
+
 // Use ICACHE_RAM_ATTR for ISRs to prevent ESP8266 resets
 #if defined(ESP8266) || defined(ESP32)
 #define ENCODER_ISR_ATTR ICACHE_RAM_ATTR
@@ -77,15 +81,17 @@ class Encoder
 {
 public:
 	Encoder(uint8_t pin1, uint8_t pin2) {
-		#ifdef INPUT_PULLUP
+		#if defined(INPUT_PULLUP) && defined(ENCODER_USE_PULLUP)
 		pinMode(pin1, INPUT_PULLUP);
 		pinMode(pin2, INPUT_PULLUP);
 		#else
 		pinMode(pin1, INPUT);
-		digitalWrite(pin1, HIGH);
 		pinMode(pin2, INPUT);
+		#if defined(ENCODER_USE_PULLUP)
+		digitalWrite(pin1, HIGH);
 		digitalWrite(pin2, HIGH);
 		#endif
+		#endif
 		encoder.pin1_register = PIN_TO_BASEREG(pin1);
 		encoder.pin1_bitmask = PIN_TO_BITMASK(pin1);
 		encoder.pin2_register = PIN_TO_BASEREG(pin2);