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# LVGL Demo v8
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[中文版本](./README_CN.md)
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This example demonstrates how to port LVGL v8 and conduct performance testing using LVGL's built-in demos. The example utilizes the development board's MIPI-DSI interface. Based on this example, applications based on LVGL v8 can be developed.
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## Getting Started
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### Prerequisites
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* An ESP32-P4-Function-EV-Board.
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* A 7-inch 1024 x 600 LCD screen powered by the [EK79007](https://dl.espressif.com/dl/schematics/display_driver_chip_EK79007AD_datasheet.pdf) IC, accompanied by a 32-pin FPC connection [adapter board](https://dl.espressif.com/dl/schematics/esp32-p4-function-ev-board-lcd-subboard-schematics.pdf) ([LCD Specifications](https://dl.espressif.com/dl/schematics/display_datasheet.pdf)).
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* A USB-C cable for power supply and programming.
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* Please refer to the following steps for the connection:
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* **Step 1**. According to the table below, connect the pins on the back of the screen adapter board to the corresponding pins on the development board.
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| Screen Adapter Board | ESP32-P4-Function-EV-Board |
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| -------------------- | -------------------------- |
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| 5V (any one) | 5V (any one) |
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| GND (any one) | GND (any one) |
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| PWM | GPIO26 |
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| LCD_RST | GPIO27 |
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* **Step 2**. Connect the FPC of LCD through the `MIPI_DSI` interface.
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* **Step 3**. Use a USB-C cable to connect the `USB-UART` port to a PC (Used for power supply and viewing serial output).
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* **Step 4**. Turn on the power switch of the board.
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### ESP-IDF Required
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- This example supports ESP-IDF release/v5.3 and later branches. By default, it runs on ESP-IDF release/v5.3.
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- Please follow the [ESP-IDF Programming Guide](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/index.html) to set up the development environment. **We highly recommend** you [Build Your First Project](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/index.html#build-your-first-project) to get familiar with ESP-IDF and make sure the environment is set up correctly.
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### Get the esp-dev-kits Repository
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To start from the examples in esp-dev-kits, clone the repository to the local PC by running the following commands in the terminal:
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```
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git clone --recursive https://github.com/espressif/esp-dev-kits.git
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```
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### Configuration
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Run ``idf.py menuconfig`` and go to ``Board Support Package(ESP32-P4)``:
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```
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menuconfig > Component config > Board Support Package
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```
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## How to Use the Example
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### Build and Flash the Example
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Build the project and flash it to the board, then run monitor tool to view serial output (replace `PORT` with your board's serial port name):
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```c
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idf.py -p PORT flash monitor
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```
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To exit the serial monitor, type ``Ctrl-]``.
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See the [ESP-IDF Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
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### Example Output
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- The complete log is as follows:
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```c
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I (25) boot: ESP-IDF v5.4-dev-2167-gdef35b1ca7-dirty 2nd stage bootloader
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I (26) boot: compile time Sep 27 2024 16:56:08
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I (27) boot: Multicore bootloader
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I (32) boot: chip revision: v0.1
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I (35) qio_mode: Enabling default flash chip QIO
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I (40) boot.esp32p4: SPI Speed : 80MHz
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I (45) boot.esp32p4: SPI Mode : QIO
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I (49) boot.esp32p4: SPI Flash Size : 16MB
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I (54) boot: Enabling RNG early entropy source...
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I (60) boot: Partition Table:
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I (63) boot: ## Label Usage Type ST Offset Length
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I (70) boot: 0 nvs WiFi data 01 02 00009000 00006000
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I (78) boot: 1 phy_init RF data 01 01 0000f000 00001000
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I (85) boot: 2 factory factory app 00 00 00010000 00800000
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I (93) boot: 3 storage Unknown data 01 82 00810000 00700000
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I (101) boot: End of partition table
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I (105) esp_image: segment 0: paddr=00010020 vaddr=48060020 size=7573ch (481084) map
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I (189) esp_image: segment 1: paddr=00085764 vaddr=30100000 size=00020h ( 32) load
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I (191) esp_image: segment 2: paddr=0008578c vaddr=30100020 size=0003ch ( 60) load
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I (196) esp_image: segment 3: paddr=000857d0 vaddr=4ff00000 size=0a848h ( 43080) load
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I (212) esp_image: segment 4: paddr=00090020 vaddr=48000020 size=58208h (360968) map
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I (270) esp_image: segment 5: paddr=000e8230 vaddr=4ff0a848 size=0e2b8h ( 58040) load
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I (283) esp_image: segment 6: paddr=000f64f0 vaddr=4ff18b00 size=031b4h ( 12724) load
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I (291) boot: Loaded app from partition at offset 0x10000
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I (292) boot: Disabling RNG early entropy source...
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I (303) hex_psram: vendor id : 0x0d (AP)
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I (304) hex_psram: Latency : 0x01 (Fixed)
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I (304) hex_psram: DriveStr. : 0x00 (25 Ohm)
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I (307) hex_psram: dev id : 0x03 (generation 4)
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I (313) hex_psram: density : 0x07 (256 Mbit)
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I (318) hex_psram: good-die : 0x06 (Pass)
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I (323) hex_psram: SRF : 0x02 (Slow Refresh)
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I (329) hex_psram: BurstType : 0x00 ( Wrap)
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I (334) hex_psram: BurstLen : 0x03 (2048 Byte)
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I (340) hex_psram: BitMode : 0x01 (X16 Mode)
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I (345) hex_psram: Readlatency : 0x04 (14 cycles@Fixed)
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I (351) hex_psram: DriveStrength: 0x00 (1/1)
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I (356) MSPI DQS: tuning success, best phase id is 2
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I (544) MSPI DQS: tuning success, best delayline id is 11
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I esp_psram: Found 32MB PSRAM device
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I esp_psram: Speed: 200MHz
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I (545) mmu_psram: flash_drom_paddr_start: 0x10000
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I (575) mmu_psram: flash_irom_paddr_start: 0x90000
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I (594) hex_psram: psram CS IO is dedicated
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I (594) cpu_start: Multicore app
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I (1050) esp_psram: SPI SRAM memory test OK
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W (1060) clk: esp_perip_clk_init() has not been implemented yet
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I (1067) cpu_start: Pro cpu start user code
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I (1067) cpu_start: cpu freq: 360000000 Hz
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I (1067) app_init: Application information:
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I (1070) app_init: Project name: lvgl_demo_v8
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I (1076) app_init: App version: 7e53cd00-dirty
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I (1081) app_init: Compile time: Sep 27 2024 16:55:57
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I (1087) app_init: ELF file SHA256: f111a533d...
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I (1093) app_init: ESP-IDF: v5.4-dev-2167-gdef35b1ca7-dirty
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I (1100) efuse_init: Min chip rev: v0.1
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I (1104) efuse_init: Max chip rev: v0.99
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I (1109) efuse_init: Chip rev: v0.1
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I (1114) heap_init: Initializing. RAM available for dynamic allocation:
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I (1122) heap_init: At 4FF1DCE0 len 0001D2E0 (116 KiB): RAM
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I (1128) heap_init: At 4FF3AFC0 len 00004BF0 (18 KiB): RAM
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I (1134) heap_init: At 4FF40000 len 00040000 (256 KiB): RAM
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I (1140) heap_init: At 50108080 len 00007F80 (31 KiB): RTCRAM
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I (1147) heap_init: At 3010005C len 00001FA4 (7 KiB): TCM
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I (1153) esp_psram: Adding pool of 31360K of PSRAM memory to heap allocator
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I (1161) spi_flash: detected chip: generic
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I (1165) spi_flash: flash io: qio
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W (1169) i2c: This driver is an old driver, please migrate your application code to adapt `driver/i2c_master.h`
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I (1180) main_task: Started on CPU0
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I (1203) esp_psram: Reserving pool of 32K of internal memory for DMA/internal allocations
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I (1203) main_task: Calling app_main()
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I (1205) LVGL: Starting LVGL task
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W (1209) ledc: GPIO 26 is not usable, maybe conflict with others
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I (1216) ESP32_P4_EV: MIPI DSI PHY Powered on
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I (1222) ESP32_P4_EV: Install MIPI DSI LCD control panel
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I (1227) ESP32_P4_EV: Install EK79007 LCD control panel
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I (1233) ek79007: version: 0.1.0
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I (1237) gpio: GPIO[27]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0
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I (1403) ESP32_P4_EV: Display initialized
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E (1404) lcd_panel: esp_lcd_panel_swap_xy(50): swap_xy is not supported by this panel
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W (1405) GT911: Unable to initialize the I2C address
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I (1411) GT911: TouchPad_ID:0x39,0x31,0x31
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I (1415) GT911: TouchPad_Config_Version:89
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I (1420) ESP32_P4_EV: Setting LCD backlight: 100%
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I (1489) main_task: Returned from app_main()
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...
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```
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## Technical Support and Feedback
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Please use the following feedback channels:
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- For technical queries, go to the [esp32.com](https://esp32.com/viewforum.php?f=22) forum.
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- For a feature request or bug report, create a [GitHub issue](https://github.com/espressif/esp-dev-kits/issues).
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We will get back to you as soon as possible.
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