Question
Render problems after rotating the display 180 degrees
I have a TFT display with a resolution of 800x480 and STM32F429. Used the code from here https://community.st.com/s/question/0D50X0000A1lVxsSQE/repost-change-lcd-orientation-in-180-degree , everything works fine in the simulator
and separately tested on the 476H Discovery but on the TFT with F429 does not render different areas
// FrontendApplication.hpp
virtual void draw(Rect& rect) {
if(drawCacheEnabled) {
Rect r(0, 0, HAL::DISPLAY_WIDTH, HAL::DISPLAY_HEIGHT);
Application::draw(r);
} else {
Application::draw(rect);
}
}
// Mirror.hpp
#ifndef MIRROR_HPP
#define MIRROR_HPP
#include <touchgfx/widgets/Widget.hpp>
#include <touchgfx/hal/HAL.hpp>
class Mirror : public touchgfx::Widget {
public:
Mirror() {}
virtual ~Mirror() {}
virtual touchgfx::Rect getSolidRect() const {
return Rect(0, 0, 0, 0);
}
virtual void draw(const touchgfx::Rect& invalidatedArea) const {
uint16_t* framebuffer = touchgfx::HAL::getInstance()->lockFrameBuffer();
for(int y = 0; y < HAL::DISPLAY_HEIGHT / 2; y++) {
touchgfx::HAL::getInstance()->blockCopy((void*)rowBufferTop, (const void*)(framebuffer + y * HAL::DISPLAY_WIDTH), HAL::DISPLAY_WIDTH * 2);
uint16_t* start = rowBufferTop;
uint16_t* end = start + HAL::DISPLAY_WIDTH - 1;
for(int x = 0; x < HAL::DISPLAY_WIDTH / 2; x++) {
uint16_t temp = *start;
*start = *end;
*end = temp;
start++;
end--;
}
touchgfx::HAL::getInstance()->blockCopy((void*)rowBufferBottom, (const void*)(framebuffer + (HAL::DISPLAY_HEIGHT - 1 - y) * HAL::DISPLAY_WIDTH), HAL::DISPLAY_WIDTH * 2);
start = rowBufferBottom;
end = start + HAL::DISPLAY_WIDTH - 1;
for(int x = 0; x < HAL::DISPLAY_WIDTH / 2; x++) {
uint16_t temp = *start;
*start = *end;
*end = temp;
start++;
end--;
}
touchgfx::HAL::getInstance()->blockCopy((void*)(framebuffer + y * HAL::DISPLAY_WIDTH), rowBufferBottom, HAL::DISPLAY_WIDTH * 2);
touchgfx::HAL::getInstance()->blockCopy((void*)(framebuffer + (HAL::DISPLAY_HEIGHT - 1 - y) * HAL::DISPLAY_WIDTH), rowBufferTop, HAL::DISPLAY_WIDTH * 2);
}
touchgfx::HAL::getInstance()->unlockFrameBuffer();
}
private:
static const uint16_t DISP_WIDTH = 800;
mutable uint16_t rowBufferTop[DISP_WIDTH];
mutable uint16_t rowBufferBottom[DISP_WIDTH];
};
#endif
// StartupView.hpp
void StartUPView::setupScreen() {
StartUPViewBase::setupScreen();
mirror.setPosition(0, 0, 800, 480);
add(mirror);
}Everything works fine without a mirror and these empty zones appear in different places
