TFT_LCD_DMA
Overview
This application serves as a comprehensive demonstration of the TFT LCD display functionality using the WM IoT SDK. It illustrates the process of initializing the TFT LCD device and executing a range of display operations. These operations include a continuous blue background refresh, displaying pre-stored images from flash memory, and rotating the screen on the X and Y axes. The program interfaces with the TFT LCD module via the SDIO (SPI mode) and utilizes DMA for communication. The hardware configurations are detailed in the Device Table, which encompasses pin definitions, frequency settings for SDIO (SPI mode), and additional pin configurations for the LCD device.
Requirements
TFT LCD Display Requirement：
Manufacturer： New Vision Microelectronics Inc.
Model：NV3041A
Pin Connections:
| GPIO_NUM | Pin Number | Connection Description | NV3041A PIN |
|---|---|---|---|
| WM_GPIO_NUM_22 | PB6 | CLK | 11 |
| WM_GPIO_NUM_23 | PB7 | MOSI | 13 |
| WM_GPIO_NUM_27 | PB11 | CS | 9 |
| WM_GPIO_NUM_13 | PA13 | RESET | 15 |
| WM_GPIO_NUM_32 | PA16 | LED | 36 |
| WM_GPIO_NUM_2 | PA2 | DCX | 10 |
| WM_GPIO_NUM_41 | PB25 | TE | 8 |
Building and flashing
Example Location：examples\tft_lcd\tft_lcd_dma
compile, burn, and more, see: get started
Running result
Successfully running will output the following logs
I/lcd_example [0.430] DEMO:block_size=65280
I/lcd_example [0.430] LCD x_resolution = 480
I/lcd_example [0.430] LCD y_resolution = 272
I/lcd_example [0.432] LCD rotation = 0
I/lcd_example [0.432] wm_lcd_demo show blue background
I/lcd_example [3.464] wm_lcd_demo show image(w=480, h=272)
I/lcd_example [5.518] wm_lcd_demo show blue background
I/lcd_example [7.550] wm_lcd_demo show image(w=480, h=272)
I/lcd_example [9.604] wm_lcd_demo show blue background
I/lcd_example [11.636] wm_lcd_demo show image(w=480, h=272)
I/lcd_example [13.690] wm_lcd_demo show blue background
I/lcd_example [15.722] wm_lcd_demo show image(w=480, h=272)
I/lcd_example [17.776] wm_lcd_demo show blue background