There is a custom widget on forum,https://community.st.com/s/question/0D50X0000A1lVxs/repost-change-lcd-orientation-in-180-degree
I tried it in my project,It is working,but cost very long time,about 10ms(my screen is 320*240,rgb565,160Mhz cpu),So I changed it a bit.Now it uses 5ms turn screen upside down.here is my changed part.but your screen is 800*480,the time maybe expand several times.
// 16 Bit implementation
virtual void draw(const touchgfx::Rect& invalidatedArea) const
{
uint16_t *framebuffer = touchgfx::HAL::getInstance()->lockFrameBuffer();
const uint32_t total_pixels = 320 * 240;
uint32_t *buffer_32 = (uint32_t *)framebuffer; // 转换为32位指针
const uint32_t nblocks = total_pixels / 2; // 32位块的数量
uint32_t *start = buffer_32;
uint32_t *end = buffer_32 + nblocks - 1;
uint32_t a;
while (start < end) {
// 读取两个32位块（各包含2个像素）
a = *start;
// 交换每个块内的两个像素（高16位和低16位互换）
*start = ((*end) >> 16) | ((*end) << 16);
*end = (a >> 16) | (a << 16);
start++;
end--;
}
touchgfx::HAL::getInstance()->unlockFrameBuffer();
}
