用户把需要更新的像素数据通过拷贝或者DMA搬到 frame buffer,然后刷一下CACHE staticesp_err_t dpi_panel_draw_bitmap(esp_lcd_panel_t *panel,intx_start,inty_start,intx_end,inty_end,constvoid*color_data) frame buffer 的数据是通过DMA不停的发送到 DSI bridge(FIFO memory of peripheral: DSI),一帧搬...
Re: PSRAM-less framebuffer strategy by fcipaq » Wed Aug 28, 2024 12:39 pm Ok, I poked around in the esp_lcd driver a little. And I think this might be a feasible solution: In esp_lcd_panel_dpi.c it is implemented that after a DMA transfer from the screen buffer to the disp...
That is what the MIPI peripheral already does: it takes the framebuffer memory (the one you get a pointer to when you call esp_lcd_dpi_panel_get_frame_buffer()) and sends it to the display continuously. In other words: if you want to draw a pixel, all you need to do is change ...
static void test_draw_color_pattern (esp_lcd_panel_handle_t * panel_handle, uint16_t h_res, uint16_t v_res) { uint16_t *color = (uint16_t *) heap_caps_calloc (1, h_res * v_res, MALLOC_CAP_DMA); if (color == NULL) { ESP_LOGE(TAG, "Color not initialized"); return; ...
To get this release, use the following commands: git clone -b v5.4-beta2 --recursive https://github.com/espressif/esp-idf.git esp-idf-v5.4-beta2 cd esp-idf-v5.4-beta2/ This is the recommended way of obtaining v5.4-beta2 of ESP-IDF. ...
It was moved.https://github.com/esp-rs/esp-hal/blob/main/qa-test/src/bin/lcd_dpi.rs Also, note that I changed the example after jgtaylor's comment. So you'll need to update theFrameTimings yanshaycommentedDec 23, 2024• edited ...
CONFIG_LCD_PANEL_IO_FORMAT_BUF_SIZE=32 # end of LCD Peripheral Configuration # end of LCD and Touch Panel # # ESP NETIF Adapter # CONFIG_ESP_NETIF_IP_LOST_TIMER_INTERVAL=120 CONFIG_ESP_NETIF_TCPIP_LWIP=y # CONFIG_ESP_NETIF_LOOPBACK is not set CONFIG_ESP_NETIF_TCPIP_AD...
CONFIG_LCD_PANEL_IO_FORMAT_BUF_SIZE=32 # end of LCD Peripheral Configuration # end of LCD and Touch Panel # # ESP NETIF Adapter # CONFIG_ESP_NETIF_IP_LOST_TIMER_INTERVAL=120 CONFIG_ESP_NETIF_TCPIP_LWIP=y # CONFIG_ESP_NETIF_LOOPBACK is not set CONFIG_ESP_NETIF_TCPIP_AD...
CONFIG_LV_DPI=130 CONFIG_LV_DISP_SMALL_LIMIT=30 CONFIG_LV_DISP_MEDIUM_LIMIT=50 CONFIG_LV_DISP_LARGE_LIMIT=70 # # Memory manager settings # # CONFIG_LV_MEM_CUSTOM is not set CONFIG_LV_MEM_SIZE_KILOBYTES=32 # CONFIG_LV_MEMCPY_MEMSET_STD is not set # end of Memory manager settings #...
That is what the MIPI peripheral already does: it takes the framebuffer memory (the one you get a pointer to when you call esp_lcd_dpi_panel_get_frame_buffer()) and sends it to the display continuously. In other words: if you want to draw a pixel, all you need to do is change ...