From c4024f49fbeedd9fc3bac77203352c4086585287 Mon Sep 17 00:00:00 2001
From: Dmitry Pustovit <me@dmitrypustovit.com>
Date: Fri, 20 Sep 2024 00:36:34 -0700
Subject: [PATCH] Added support clearing display at 0 brightness for DIY Boards
 to AgOledDisplay.

Currently, the only affect the brightness setting has with the DIY boards is an attempt to set the contrast.

Setting the contrast to 0 does not have any effect.
This appears to be a know limitation for these display boards.
---
 src/AgOledDisplay.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/AgOledDisplay.cpp b/src/AgOledDisplay.cpp
index 8250407..8396e33 100644
--- a/src/AgOledDisplay.cpp
+++ b/src/AgOledDisplay.cpp
@@ -424,7 +424,17 @@ void OledDisplay::setBrightness(int percent) {
       DISP()->setContrast((127 * percent) / 100);
     }
   } else if (ag->isBasic()) {
-    ag->display.setContrast((255 * percent) / 100);
+    if (percent == 0) {
+      isDisplayOff = true;
+
+      // Clear display.
+      ag->display.clear();
+      ag->display.show();
+    }
+    else {
+      isDisplayOff = false;
+      ag->display.setContrast((255 * percent) / 100);
+    }
   }
 }