From 80e7ab3161112d1841b19f8aded3cca21eb5021b Mon Sep 17 00:00:00 2001
From: "Ben V. Brown" <Ralim@Ralimtek.com>
Date: Sun, 6 Nov 2022 22:51:59 +1100
Subject: [PATCH] Force delay after display state change

So that we backoff if OLED is busy

Update OLED.hpp
---
 source/Core/Drivers/OLED.hpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/source/Core/Drivers/OLED.hpp b/source/Core/Drivers/OLED.hpp
index b6b6743a..9912c5df 100644
--- a/source/Core/Drivers/OLED.hpp
+++ b/source/Core/Drivers/OLED.hpp
@@ -10,10 +10,12 @@
 #ifndef OLED_HPP_
 #define OLED_HPP_
 #include "Font.h"
+#include "cmsis_os.h"
 #include "configuration.h"
 #include <BSP.h>
 #include <stdbool.h>
 #include <string.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -63,8 +65,13 @@ public:
   }
 
   static void setDisplayState(DisplayState state) {
-    displayState    = state;
-    screenBuffer[1] = (state == ON) ? 0xAF : 0xAE;
+    if (state != displayState) {
+      displayState    = state;
+      screenBuffer[1] = (state == ON) ? 0xAF : 0xAE;
+      // Dump the screen state change out _now_
+      I2C_CLASS::Transmit(DEVICEADDR_OLED, screenBuffer, FRAMEBUFFER_START - 1);
+      osDelay(TICKS_10MS);
+    }
   }
 
   static void setRotation(bool leftHanded); // Set the rotation for the screen