first commit

libraries/LovyanGFX/examples_for_PC/CMake_FrameBuffer/CMakeLists.txt

@@ -0,0 +1,20 @@
+cmake_minimum_required (VERSION 3.8)
+project(LGFX_LINUX_FB)
+
+add_definitions(-DLGFX_LINUX_FB)
+
+file(GLOB Target_Files RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} CONFIGURE_DEPENDS 
+    *.cpp
+    LovyanGFX/src/lgfx/Fonts/efont/*.c
+    LovyanGFX/src/lgfx/Fonts/IPA/*.c
+    LovyanGFX/src/lgfx/utility/*.c
+    LovyanGFX/src/lgfx/v1/*.cpp
+    LovyanGFX/src/lgfx/v1/misc/*.cpp
+    LovyanGFX/src/lgfx/v1/panel/Panel_Device.cpp
+    LovyanGFX/src/lgfx/v1/platforms/framebuffer/*.cpp
+    )
+
+add_executable (LGFX_LINUX_FB ${Target_Files})
+target_include_directories(LGFX_LINUX_FB PUBLIC "LovyanGFX/src/")
+target_compile_features(LGFX_LINUX_FB PUBLIC cxx_std_17)
+target_link_libraries(LGFX_LINUX_FB -lpthread)

libraries/LovyanGFX/examples_for_PC/CMake_FrameBuffer/LGFX_LINUX_FB.cpp

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+#include <linux/fb.h>
+#include <thread>
+
+#define LGFX_USE_V1
+#include <LovyanGFX.hpp>
+#include <LGFX_AUTODETECT.hpp>
+
+void setup(void);
+void loop(void);
+
+void loopThread(void)
+{
+  setup();
+  for (;;)
+  {
+    loop();
+    std::this_thread::yield();
+  }
+}
+
+int main(int, char**)
+{
+  std::thread sub_thread(loopThread);
+  for (;;)
+  {
+    std::this_thread::yield();
+    std::this_thread::sleep_for(std::chrono::milliseconds(5));
+  }
+}

libraries/LovyanGFX/examples_for_PC/CMake_FrameBuffer/user_code.cpp

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+#include <stdio.h>  // for drawBmpFile / drawJpgFile / drawPngFile
+
+#define LGFX_USE_V1
+#include <LovyanGFX.hpp>
+#include <LGFX_AUTODETECT.hpp>
+
+#define SCREEN_X 320
+#define SCREEN_Y 240
+#define DEVICE_NAME "/dev/fb0"
+
+// 引数1 画面の幅
+// 引数2 画面の高さ
+// 引数3 操作対象とするフレームバッファのパス名、またはデバイス名称 ("st7789") 等の文字列
+LGFX lcd ( SCREEN_X, SCREEN_Y, DEVICE_NAME );
+
+int32_t target_x = (SCREEN_X / 2) * 256;
+int32_t target_y = (SCREEN_Y / 2) * 256;
+int32_t current_x = 0;
+int32_t current_y = 0;
+int32_t add_x = 0;
+int32_t add_y = 0;
+
+void setup()
+{
+  lcd.init();
+}
+
+void loop()
+{
+  static int i;
+  ++i;
+  lcd.fillCircle(current_x >> 8, current_y >> 8, 5, i);
+  current_x += add_x;
+  current_y += add_y;
+  add_x += (current_x < target_x) ? 1 : -1;
+  add_y += (current_y < target_y) ? 1 : -1;
+  lgfx::delay(1);
+}