Mirror GC9A01

TekuSP · Dec 26, 2023 · 33a0dec · 33a0dec
1 parent be15642
commit 33a0dec
Showing 1 changed file with 39 additions and 18 deletions.
diff --git a/src/nanoFramework.Graphics/Graphics/Displays/GC9A01_MELLOW_240x240_SPI.cpp b/src/nanoFramework.Graphics/Graphics/Displays/GC9A01_MELLOW_240x240_SPI.cpp
@@ -21,6 +21,7 @@ Full datasheet at https://www.waveshare.com/w/upload/5/5e/GC9A01A.pdf
 struct DisplayDriver g_DisplayDriver;
 extern DisplayInterface g_DisplayInterface;
 extern DisplayInterfaceConfig g_DisplayInterfaceConfig;
+CLR_UINT8 orientationByte;
 
 enum GC9A01_CMD : CLR_UINT8
 {
@@ -86,7 +87,9 @@ enum GC9A01_MEMORY_ACCESS_CTRL : CLR_UINT8
     Portrait = 0x18,
     Portrait180 = 0x28,
     Landscape = 0x48,
-    Landscape180 = 0x88
+    Landscape180 = 0x88,
+    MirrorX = 0x40,
+    MirrorY = 0x80
 };
 
 void DisplayDriver::SetupDisplayAttributes()
@@ -104,25 +107,29 @@ void DisplayDriver::SetupDisplayAttributes()
 bool DisplayDriver::Initialize()
 {
     SetupDisplayAttributes();
-    g_DisplayInterface.SendCommand(1, GC9A01_CMD::InnerRegisterEnable2);
+    g_DisplayInterface.SendCommand(1, 0xfe, 0);
+    g_DisplayInterface.SendCommand(1, 0xef, 0);
     g_DisplayInterface.SendCommand(2, 0xEB, 0x14);
-    g_DisplayInterface.SendCommand(1, GC9A01_CMD::InnerRegisterEnable1);
-    g_DisplayInterface.SendCommand(1, GC9A01_CMD::InnerRegisterEnable2);
-    g_DisplayInterface.SendCommand(2, 0xEB, 0x14);
-    g_DisplayInterface.SendCommand(2, 0x84, 0x40);
+    g_DisplayInterface.SendCommand(2, 0x84, 0x60);
     g_DisplayInterface.SendCommand(2, 0x85, 0xFF);
     g_DisplayInterface.SendCommand(2, 0x86, 0xFF);
     g_DisplayInterface.SendCommand(2, 0x87, 0xFF);
+    g_DisplayInterface.SendCommand(2, 0x8E, 0xFF);
+    g_DisplayInterface.SendCommand(2, 0x8F, 0xFF);
     g_DisplayInterface.SendCommand(2, 0x88, 0x0A);
-    g_DisplayInterface.SendCommand(2, 0x89, 0x21);
+    g_DisplayInterface.SendCommand(2, 0x89, 0x23);
     g_DisplayInterface.SendCommand(2, 0x8A, 0x00);
     g_DisplayInterface.SendCommand(2, 0x8B, 0x80);
     g_DisplayInterface.SendCommand(2, 0x8C, 0x01);
-    g_DisplayInterface.SendCommand(2, 0x8D, 0x01);
-    g_DisplayInterface.SendCommand(2, 0x8E, 0xFF);
-    g_DisplayInterface.SendCommand(2, 0x8F, 0xFF);
-
-    g_DisplayInterface.SendCommand(3, GC9A01_CMD::DisplayFunctionControl, 0x00, 0x20);
+    g_DisplayInterface.SendCommand(2, 0x8D, 0x03);
+    g_DisplayInterface.SendCommand(5, 0x90, 0x08, 0x08, 0x08, 0x08);
+    g_DisplayInterface.SendCommand(4, 0xff, 0x60, 0x01, 0x04);
+    g_DisplayInterface.SendCommand(2, 0XC3, 0x13);
+    g_DisplayInterface.SendCommand(2, 0XC4, 0x13);
+    g_DisplayInterface.SendCommand(2, 0XC9, 0x30);
+    g_DisplayInterface.SendCommand(2, 0xbe, 0x11);
+    g_DisplayInterface.SendCommand(3, 0xe1, 0x10, 0x0e);
+    g_DisplayInterface.SendCommand(4, 0xdf, 0x21, 0x0c, 0x02);
 
     g_DisplayInterface.SendCommand(2, GC9A01_CMD::PixelFormatSet, GC9A01_PIXEL_FORMAT::Pixel16Bit);
     g_DisplayInterface.SendCommand(5, 0x90, 0x08, 0x08, 0x08, 0x08);
@@ -145,6 +152,8 @@ bool DisplayDriver::Initialize()
     g_DisplayInterface.SendCommand(10, 0x70, 0x07, 0x07, 0x04, 0x0E, 0x0F, 0x09, 0x07, 0x08, 0x03);
     g_DisplayInterface.SendCommand(2, GC9A01_CMD::FrameRate, 0x34);
     g_DisplayInterface.SendCommand(1, 0xE8, 0x34); // 4 dot inversion
+    g_DisplayInterface.SendCommand(9 ,0x60, 0x38, 0x0b, 0x6D, 0x6D, 0x39, 0xf0, 0x6D, 0x6D),
+    g_DisplayInterface.SendCommand(9, 0x61, 0x38, 0xf4, 0x6D, 0x6D, 0x38, 0xf7, 0x6D, 0x6D),
     g_DisplayInterface.SendCommand(13, 0x62, 0x18, 0x0D, 0x71, 0xED, 0x70, 0x70, 0x18, 0x0F, 0x71, 0xEF, 0x70, 0x70);
     g_DisplayInterface.SendCommand(13, 0x63, 0x18, 0x11, 0x71, 0xF1, 0x70, 0x70, 0x18, 0x13, 0x71, 0xF3, 0x70, 0x70);
     g_DisplayInterface.SendCommand(8, 0x64, 0x28, 0x29, 0xF1, 0x01, 0xF1, 0x00, 0x07);
@@ -158,9 +167,7 @@ bool DisplayDriver::Initialize()
     g_DisplayInterface.SendCommand(1, GC9A01_CMD::SleepOut);
     OS_DELAY(120);
     g_DisplayInterface.SendCommand(1, GC9A01_CMD::DisplayOn);
-    OS_DELAY(20);
-
-
+    OS_DELAY(20);    
     return true;
 }
 
@@ -246,7 +253,7 @@ void DisplayDriver::SetDefaultOrientation()
 
 bool DisplayDriver::ChangeOrientation(DisplayOrientation orientation)
 {
-    CLR_UINT8 orientationByte = GC9A01_MEMORY_ACCESS_CTRL::Portrait;
+
     switch (orientation)
     {
         case DisplayOrientation::DisplayOrientation_Portrait:
@@ -262,11 +269,25 @@ bool DisplayDriver::ChangeOrientation(DisplayOrientation orientation)
             orientationByte = GC9A01_MEMORY_ACCESS_CTRL::Portrait180;
             break;
     }
-
+    if (true)
+    {
+        orientationByte = orientationByte | GC9A01_MEMORY_ACCESS_CTRL::MirrorX;
+    }  
+    else
+    {
+        orientationByte = orientationByte & ~GC9A01_MEMORY_ACCESS_CTRL::MirrorX;
+    } 
+    if (false)
+    {
+        orientationByte = orientationByte | GC9A01_MEMORY_ACCESS_CTRL::MirrorY;
+    }  
+    else
+    {
+        orientationByte = orientationByte & ~GC9A01_MEMORY_ACCESS_CTRL::MirrorY;
+    }
     g_DisplayInterface.SendCommand(2, GC9A01_CMD::MemoryAccessControl, orientationByte);
     return true;
 }
-
 CLR_UINT32 DisplayDriver::PixelsPerWord()
 {
     return (32 / Attributes.BitsPerPixel);