From ae1037946a46fe8bd47f3063f70b1411ba7326a8 Mon Sep 17 00:00:00 2001
From: Gregg <homespan@icloud.com>
Date: Sun, 3 Oct 2021 21:39:23 -0500
Subject: [PATCH] Update Blinker() to fix inherent problem with digitalRead()
 in ESP32-C3

Pin must be INPUT_OUTPUT for digitalRead to work with ESP32-C3 (the IDF uses a new protocol for the C3).
---
 src/Utils.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Utils.cpp b/src/Utils.cpp
index 9417f75..dbeeaab 100644
--- a/src/Utils.cpp
+++ b/src/Utils.cpp
@@ -227,6 +227,7 @@ Blinker::Blinker(int pin, int timerNum){
 void Blinker::init(int pin, int timerNum){
   this->pin=pin;
   pinMode(pin,OUTPUT);
+  gpio_set_direction((gpio_num_t)pin, GPIO_MODE_INPUT_OUTPUT);      // needed to ensure digitalRead() functions correctly on ESP32-C3
   digitalWrite(pin,0);
 
 #if SOC_TIMER_GROUP_TIMERS_PER_GROUP>1                        // ESP32 and ESP32-S2 contains two timers per timer group