From 91067e9948dc20672269525b58b4a41618239786 Mon Sep 17 00:00:00 2001
From: estshorter <1430311+estshorter@users.noreply.github.com>
Date: Wed, 3 Feb 2021 21:47:28 +0900
Subject: [PATCH 1/2] Add a destructor to M5EPD

---
 src/M5EPD.h | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/M5EPD.h b/src/M5EPD.h
index 9fc8389..6ab9125 100644
--- a/src/M5EPD.h
+++ b/src/M5EPD.h
@@ -39,6 +39,11 @@ class M5EPD
 {
 public:
     M5EPD();
+    ~M5EPD()
+    {
+        if (_adc_chars != nullptr)
+            free(_adc_chars);
+    }
     void begin(bool touchEnable = true, bool SDEnable = true, bool SerialEnable = true, bool BatteryADCEnable = true, bool I2CEnable = false);
     void update();
     void enableEXTPower() { digitalWrite(M5EPD_EXT_PWR_EN_PIN, 1); }
@@ -52,9 +57,9 @@ class M5EPD
     uint32_t getBatteryVoltage();
 
     void shutdown();
-    int shutdown( int seconds );
-    int shutdown( const rtc_time_t &RTC_TimeStruct);
-    int shutdown( const rtc_date_t &RTC_DateStruct, const rtc_time_t &RTC_TimeStruct);
+    int shutdown(int seconds);
+    int shutdown(const rtc_time_t &RTC_TimeStruct);
+    int shutdown(const rtc_date_t &RTC_DateStruct, const rtc_time_t &RTC_TimeStruct);
 
     Button BtnL = Button(M5EPD_KEY_LEFT_PIN, true, 10);
     Button BtnP = Button(M5EPD_KEY_PUSH_PIN, true, 10);

From 3c90e8993eff32711cdf654c0512a39f4cc3a7a7 Mon Sep 17 00:00:00 2001
From: estshorter <1430311+estshorter@users.noreply.github.com>
Date: Wed, 3 Feb 2021 21:55:56 +0900
Subject: [PATCH 2/2] Initialize _adc_chars with nullptr

---
 src/M5EPD.cpp | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/M5EPD.cpp b/src/M5EPD.cpp
index 23aca19..6e47718 100644
--- a/src/M5EPD.cpp
+++ b/src/M5EPD.cpp
@@ -7,11 +7,8 @@
 #define SCALE 0.5//0.78571429
 #define ADC_FILTER_SAMPLE 8
 
-
-M5EPD::M5EPD()
+M5EPD::M5EPD() : _is_adc_start(false), _isInited(false), _adc_chars(nullptr)
 {
-    _isInited = false;
-    _is_adc_start = false;
 }
 
 /** @brief Initialize the power supply, screen and other peripherals