From 37c81dc2db500581079974d52e96da3ca2c6792e Mon Sep 17 00:00:00 2001
From: surt <carl.olsson@gmail.com>
Date: Tue, 7 Feb 2023 05:12:06 +1000
Subject: [PATCH] Add LED_BUILTIN* definitions and initialization for LEDs to
 stop them floating. (#7636)

Co-authored-by: Rodrigo Garcia <rodrigo.garcia@espressif.com>
---
 variants/AirM2M_CORE_ESP32C3/pins_arduino.h | 4 ++++
 variants/AirM2M_CORE_ESP32C3/variant.cpp    | 7 +++++++
 2 files changed, 11 insertions(+)
 create mode 100644 variants/AirM2M_CORE_ESP32C3/variant.cpp

diff --git a/variants/AirM2M_CORE_ESP32C3/pins_arduino.h b/variants/AirM2M_CORE_ESP32C3/pins_arduino.h
index af061a0ee..4af6c1d87 100644
--- a/variants/AirM2M_CORE_ESP32C3/pins_arduino.h
+++ b/variants/AirM2M_CORE_ESP32C3/pins_arduino.h
@@ -11,6 +11,10 @@
 #define digitalPinToInterrupt(p)    (((p)<NUM_DIGITAL_PINS)?(p):-1)
 #define digitalPinHasPWM(p)         (p < EXTERNAL_NUM_INTERRUPTS)
 
+static const uint8_t LED_BUILTIN     = 12;
+#define BUILTIN_LED  LED_BUILTIN
+static const uint8_t LED_BUILTIN_AUX = 13;
+
 static const uint8_t TX = 21;
 static const uint8_t RX = 20;
 
diff --git a/variants/AirM2M_CORE_ESP32C3/variant.cpp b/variants/AirM2M_CORE_ESP32C3/variant.cpp
new file mode 100644
index 000000000..e7c8670a0
--- /dev/null
+++ b/variants/AirM2M_CORE_ESP32C3/variant.cpp
@@ -0,0 +1,7 @@
+#include "Arduino.h"
+
+extern "C" void initVariant(void){
+	// Stop LEDs floating
+	pinMode(LED_BUILTIN, OUTPUT); digitalWrite(LED_BUILTIN, LOW);
+	pinMode(LED_BUILTIN_AUX, OUTPUT); digitalWrite(LED_BUILTIN_AUX, LOW);
+}
\ No newline at end of file
-- 
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