Hezhao Air8000—— is a multifunctional industrial engine that integrates 4G, Wi-Fi, BLE, GNSS positioning, G-sensor, and power management, providing powerful scene solution capabilities. It supports multi-network integration and offers over 50 programmable I/O ports to meet the complex peripheral expansion needs of industrial equipment.
Currently, the Air8000 supports LCD screens with SPI and QSPI interfaces:
-
SPI: Supports up to 480*320, 3.5 inches;
-
QSPI: Supports up to 720*720, 4 inches.
It is suitable for IoT display terminals, such as temperature and humidity monitoring screens, device status indicators, smart wearable products, etc.; combined with the Air8000 camera module, it can display images or QR code parsing results in real-time.
Hezhao provides supporting Air8000 complete development board kits and demo examples, making it easy for everyone to quickly test and develop projects.
1
Hardware Support Description
1.1 LCD Interface Types
The Air8000 connects to the LCD screen via a dedicated SPI/QSPI interface, supporting various driver ICs.
The currently supported ones include:
-
ST7735/ST7735S/ST7789/ST7796
-
ILI9341/ILI9486/GC9306/NV3037
-
CO5300/SH8601Z/JD9261T
The official LCD used with the Air8000 development board is currently the ST7796, and users can flexibly choose corresponding LCD modules and suppliers in their project development.
▼ SPI LCD Interface Pin Description ▼
-
CLK (Clock Line): GPIO34 (VDD_EXT voltage domain);
-
SDA (Data): GPIO37 (VDD_EXT voltage domain);
-
Chip Select (CS): Can be controlled by any GPIO (e.g., GPIO35);
-
Data/Command Select (RS): Can be controlled by any GPIO (e.g., GPIO38);
-
Reset Control (RST):
Must be controlled by GPIO (e.g., GPIO36), and note that a pull-up resistor should be added in the circuit design, otherwise it will affect low power performance and driving capability.
-
Backlight Control (BL):
Must be controlled by GPIO (e.g., GPIO30), and note that a pull-up resistor should be added in the circuit design, otherwise it will affect low power performance and driving capability.
▼ QSPI LCD Interface Pin Description ▼
If it is a QSPI interface screen, refer to the wiring in the chart below:
1.2 Power and Signal Design
1) Voltage Matching:
LCD modules typically operate at 3.3V levels, which are directly compatible with the Air8000;
2) Backlight Power Supply:
Some LCD modules provided by suppliers require independent power supply for backlight to avoid current spikes caused by sharing power with the LCD driver IC.
The LCD modules used with the Air8000 do not require independent power supply for backlight and can share the same power supply as the LCD.
3) Reference Design:
You can download the latest hardware reference design and Air8000 pin mapping documents through the link below:
https://docs.openluat.com/air8000/luatos/hardware/design/reference/
2
Software Development Example
The Air8000 has a dedicated hardware LCD driver interface and has encapsulated APIs, so there is no need to write drivers from scratch according to the SPI interface API; Hezhao provides practical demo examples and hands-on tutorials to help everyone get started quickly.
For the latest source code and practical tutorials, see:https://docs.openluat.com/air8000/luatos/app/multimedia/lcd/
The airlcd.lua code is shown in the figure below, and the complete demo can be found in the related source code repository.
That’s all for today, feel free to join the technical exchange group or contact the person in charge for further discussion.
The Air8000 is multifunctional and continuously unlocking new features:
Bluetooth functionality is open, supporting the latest BLE 5.4 version
Real-time calling function allows IoT devices to “hear and speak”
Smart power management solutions based on Air8000
G-sensor motion detection function, source code open
SMS function: a lifeboat that never sinks in the digital flood
Modbus function: supports Modbus RTU/TCP/ASCII
Multi-network integration: [Wi-Fi supply] function example
Multi-network integration: [Ethernet supply] function example
3-second rapid positioning, AGPS function source code open
For more development materials, see: www.air8000.cn
▼ Learn More About Hezhao ▼
4G + positioning + WiFi + Bluetooth, Air8000 complete development boardAir8101 core board + accessory board new products
Hezhao low-power 4G module, adding 4 more hardcore new products
