From 87443ad43f0b032074a9df05cdd00a624345be62 Mon Sep 17 00:00:00 2001
From: liamcottle <liam@liamcottle.com>
Date: Tue, 1 Apr 2025 14:46:48 +1300
Subject: [PATCH] clear display on init to avoid static

---
 examples/companion_radio/main.cpp | 1 +
 src/helpers/ui/DisplayDriver.h    | 1 +
 src/helpers/ui/SSD1306Display.cpp | 5 +++++
 src/helpers/ui/SSD1306Display.h   | 1 +
 4 files changed, 8 insertions(+)

diff --git a/examples/companion_radio/main.cpp b/examples/companion_radio/main.cpp
index ef50d1ca..d6a6e990 100644
--- a/examples/companion_radio/main.cpp
+++ b/examples/companion_radio/main.cpp
@@ -1442,6 +1442,7 @@ void setup() {
  #ifdef DISPLAY_CLASS
   if (display.begin()) {
     disp = &display;
+    disp->clear();
   }
  #endif
 #endif
diff --git a/src/helpers/ui/DisplayDriver.h b/src/helpers/ui/DisplayDriver.h
index 1c8bebc7..7086b807 100644
--- a/src/helpers/ui/DisplayDriver.h
+++ b/src/helpers/ui/DisplayDriver.h
@@ -15,6 +15,7 @@ public:
   virtual bool isOn() = 0;
   virtual void turnOn() = 0;
   virtual void turnOff() = 0;
+  virtual void clear() = 0;
   virtual void startFrame(Color bkg = DARK) = 0;
   virtual void setTextSize(int sz) = 0;
   virtual void setColor(Color c) = 0;
diff --git a/src/helpers/ui/SSD1306Display.cpp b/src/helpers/ui/SSD1306Display.cpp
index 4c2699ac..911dd6fa 100644
--- a/src/helpers/ui/SSD1306Display.cpp
+++ b/src/helpers/ui/SSD1306Display.cpp
@@ -20,6 +20,11 @@ void SSD1306Display::turnOff() {
   _isOn = false;
 }
 
+void SSD1306Display::clear() {
+  display.clearDisplay();
+  display.display();
+}
+
 void SSD1306Display::startFrame(Color bkg) {
   display.clearDisplay();  // TODO: apply 'bkg'
   _color = SSD1306_WHITE;
diff --git a/src/helpers/ui/SSD1306Display.h b/src/helpers/ui/SSD1306Display.h
index c90a336d..cd0e2a0a 100644
--- a/src/helpers/ui/SSD1306Display.h
+++ b/src/helpers/ui/SSD1306Display.h
@@ -27,6 +27,7 @@ public:
   bool isOn() override { return _isOn; }
   void turnOn() override;
   void turnOff() override;
+  void clear() override;
   void startFrame(Color bkg = DARK) override;
   void setTextSize(int sz) override;
   void setColor(Color c) override;