Hello Dear Engineers,
I am looking for using DMA2D with stm32f429IGT6. So far I have been able to use RAM and LCD in cooperation. Now I want to use LVGL as the main framework. The main problem is I don't know how should I use dma2d in the bare-metal case. I was able to use it with Touchgfx, but the configuration then is made by stm32cubemx and the Touchgfx designer.
The flush routine is as follows
static void tft_lcd_flush_cb(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_p)
{
for(int y = area->y1; y <= area->y2; y++)
for(int x = area->x1; x <= area->x2; x++)
LCD_FB[x+(y * LV_HOR_RES_MAX)]=(color_p++->full); //pixelColor;
// HAL_DMA2D_Start(&hdma2d, &color_p[0], &LCD_FB[0], 800, 480);
// lv_gpu_stm32_dma2d_fill(LCD_FB, 800*480, color_p, 800, 480);
lv_disp_flush_ready(drv);
}
In the code above, LCD_FB is a pointer to the LCD address which is associated with external RAM. In the mentioned code, the nested for{for{}} are working perfectly, but the two commented code lines are not working as an alternate for the nested for{for{}}.
As for the DMA2D, I have used only
MX_DMA2D_Init();
Is there any other configuration I should implement?
Your help is appreciated
Sincerely yours
