I'm using rt1052PXP to rotate a landscape view to a portrait view, but the overall display shifts downwards when I refresh the page. Why is this happening?
static void DEMO_FlushDisplay(lv_disp_drv_t *disp_drv, const lv_area_t *area, lv_color_t *color_p)
{
lv_area_t dest_area =
{
.x1 = 0,
.x2 = 480 - 1,
.y1 = 0,
.y2 = 800 - 1,
};
lv_gpu_nxp_pxp_blit(((lv_color_t *)s_inactiveFrameBuffer), area, 800, color_p, area,480, LV_OPA_COVER, LV_DISP_ROT_270);
DCACHE_CleanInvalidateByRange((uint32_t)color_p, DEMO_FB_SIZE);
ELCDIF_SetNextBufferAddr(LCDIF, (uint32_t)s_inactiveFrameBuffer);
s_framePending = true;if (xSemaphoreTake(s_frameSema, portMAX_DELAY) == pdTRUE)
{
/* IMPORTANT!!!
* Inform the graphics library that you are ready with the flushing*/
lv_disp_flush_ready(disp_drv);
}
else
{
PRINTF("Display flush failed\r\n");
assert(0);
}
}
void lv_disp_drv_init(lv_disp_drv_t * driver)
{
lv_memset_00(driver, sizeof(lv_disp_drv_t));
driver->hor_res = 320;
driver->ver_res = 240;
driver->physical_hor_res = -1;
driver->physical_ver_res = -1;
driver->offset_x = 0;
driver->offset_y = 0;
driver->antialiasing = LV_COLOR_DEPTH > 8 ? 1 : 0;
driver->screen_transp = 0;
driver->dpi = LV_DPI_DEF;
driver->color_chroma_key = LV_COLOR_CHROMA_KEY;
#if LV_USE_GPU_NXP_PXP
// driver->draw_ctx_init = lv_draw_pxp_ctx_init;
// driver->draw_ctx_deinit = lv_draw_pxp_ctx_deinit;
// driver->draw_ctx_size = sizeof(lv_draw_pxp_ctx_t);
driver->draw_ctx_init = lv_draw_sw_init_ctx;
driver->draw_ctx_deinit = lv_draw_sw_init_ctx;
driver->draw_ctx_size = sizeof(lv_draw_sw_ctx_t);
#else
driver->draw_ctx_init = lv_draw_sw_init_ctx;
driver->draw_ctx_deinit = lv_draw_sw_init_ctx;
driver->draw_ctx_size = sizeof(lv_draw_sw_ctx_t);
#endif
}
Hi @dsd,
The LV_USE_GPU_NXP_PXP_AUTO_INIT allows LVGL to leverage the user of PXP for internal widget rendering, which could definitely cause issues when the application also uses this PXP in parallel for whole screen rotation. However, it is likely not the source of the issue.
From the initial code, it seems like you are not using dest_area, or rather you are using area as both source and destination for the PXP blit, which means that only the partial dirty region might be getting placed on different absolute positions rather than the intended.
static void DEMO_FlushDisplay(lv_disp_drv_t *disp_drv, const lv_area_t *area, lv_color_t *color_p)
{
DCACHE_CleanInvalidateByRange((uint32_t)color_p, DEMO_FB_SIZE);
ELCDIF_SetNextBufferAddr(LCDIF, (uint32_t)color_p);
s_framePending = true;
if (xSemaphoreTake(s_frameSema, portMAX_DELAY) == pdTRUE)
{
/* IMPORTANT!!!
* Inform the graphics library that you are ready with the flushing*/
lv_disp_flush_ready(disp_drv);
}
else
{
PRINTF("Display flush failed\r\n");
assert(0);
}
}
Simply modify the macro /*Use NXP's PXP GPU iMX RTxxx platforms*/
#define LV_USE_GPU_NXP_PXP 1
#if LV_USE_GPU_NXP_PXP
/*1: Add default bare metal and FreeRTOS interrupt handling routines for PXP (lv_gpu_nxp_pxp_osa.c)
* and call lv_gpu_nxp_pxp_init() automatically during lv_init(). Note that symbol SDK_OS_FREE_RTOS
* has to be defined in order to use FreeRTOS OSA, otherwise bare-metal implementation is selected.
*0: lv_gpu_nxp_pxp_init() has to be called manually before lv_init()
/
#define LV_USE_GPU_NXP_PXP_AUTO_INIT 1
#endif /* LV_USE_GPU_NXP_PXP */
The same problem will occur, and the direction of the offset will be the same as after rotation.
What's even stranger is that there are two different results within the same project, even though I thought the configuration should be the same.
No display offset occurred
Display offset occurs
