LILYGO ESP32 T-Display Bluetooth Module User Guide
- June 6, 2024
- LILYGO
Table of Contents
T-Display
User Guide
About This Guide
This document is intended to help users set up the basic software development
environment for developing applications using hardware based on the T-Display.
Through a simple example, this document illustrates how to use Arduino,
including the menu-based configuration wizard, compiling the Arduino and
firmware download to the ESP32 module.
Release Notes
| Date | Version | Release notes |
|---|---|---|
| 2021.06 | V1.0 | First release. |
| 2021.12 | V1.1 | Second release. |
Introduction
T-Display
T-Display is a development board. It can work independently
It consists of ESP32 MCU supporting Wi-Fi + BT+ BLE communication protocol and
a screen. The screen is 1.14 inch IPS LCD ST7789V.
For applications ranging from low-power sensor networks to the most demanding
tasks.
The MCU of this board is the ESP32-D0WDQ6 chip.
ESP32 integrates Wi-Fi (2.4 GHz band) and Bluetooth 4.2 solutions on a single
chip, along with dual high-performance cores and many other versatile
peripherals. Powered by 40 nm technology, ESP32 provides a robust, highly
integrated platform to meet the continuous demands for efficient power usage,
compact design, security, high performance, and reliability.
Xinyuan provides the basic hardware and software resources that empower
application developers to build their ideas around the ESP32 series hardware.
The software development framework provided by Xinyuan is intended for rapidly
developing Internet of Things (IoT) applications, with Wi-Fi, Bluetooth,
flexible power management, and other advanced system features.
The RF frequency range is BT 2.402 GHz to 2.480 GHz/WIFI 2.412GHz to 2.462GHz.
The maximum RF transmit power is 20.31dBm.
The T-Display manufacturer is Shenzhen Xin Yuan Electronic Technology Co.,
Ltd.
Arduino
A set of cross-platform applications written in Java. The Arduino Software IDE is derived from the Processing programming language and the integrated development environment of the Wiring program. Users can develop applications in Windows/Linux/macOS based on Arduino. It is recommended to use Windows 10. Windows OS has been used as an example in this document for illustration purposes.
Preparation
To develop applications for ESP32 you need:
- PC loaded with either Windows, Linux, or Mac operating system
- Toolchain to build the Application for ESP32
- Arduino that essentially contains API for ESP32 and scripts to operate the Toolchain
- CH9102 serial port driver
- The ESP32 board itself and a USB cable to connect it to the PC
Get Started
Download the Arduino Software
The quickest how to install the Arduino Software (IDE) on Windows machines
Quick Start Guide
The website provides a quick start tutorial
-
Mac OS X:
https://www.arduino.cc/en/Guide/MacOSX
Installation steps for Windows platform Arduino
Enter the download interface, select Windows installer to install directly
Install the Arduino Software
Wait for installation
Configure
Download Git
Download the installation package Git.exe
Pre-build configuration
Click the Arduino icon, then right-click and select “Open folder where “
Select hardware ->
Mouse Right-click ->
Click Git Bash Here
Cloning a remote repository
$ mkdir espressif
$ cd espressif
$ git clone –recursive https://github.com/espressif/arduino-esp32.git esp32
Connect
You are almost there. To be able to proceed further, connect the ESP32 board to the PC, check under what serial port the board is visible, and verify if serial communication works.
Test Demo
Select File>>Example>>WiFi>>WiFiScan
Upload Sketch
Select Board
Tools<<Board<<ESP32 Dev Module
Upload
Sketch << Upload
Serial Monitor
Tools << Serial Monitor
SSC Command Reference
Here list of some common Wi-Fi commands for you to test the module.
op
Description
op commands are used to set and query the Wi-Fi model of the system.
Example
op -Q
op -S -o wmode
Parameter
Table 6-1. op Command Parameter
| Parameter | Description |
|---|---|
| -Q | Query Wi-Fi mode. |
| -S | Set Wi-Fi mode. |
| wmode | There are 3 Wi-Fi modes: |
• mode = 1: STA mode
• mode = 2: AP mode
• mode = 3: STA+AP mode
sta
Description
sta commands are used to scan the STA network interface, connect or disconnect
AP, and
query the connecting status of STA network interface.
Example
sta -S [-s ssid] [-b bssid] [-n channel] [-h] sta -Q
sta -C [-s ssid] [-p password] sta -D
Parameter
Table 6-2. sta Command Parameter
| Parameter | Description |
|---|---|
| -S scan | Scan Access Points. |
| Parameter | Description |
| --- | --- |
| -s ssid | Scan or connect Access Points with the ssid. |
| -b bssid | Scan the Access Points with the bssid. |
| -n channel | Scan the channel. |
| -h | Show scan results with hidden ssid Access Points. |
| -Q | Show STA connect stutus. |
| -D | Disconnected with current Access Points. |
ap
Description
ap commands are used to set the parameter of AP network interface.
Example
ap -S [-s ssid] [-p password] [-t encrypt] [-n channel] [-h] [-m max_sta] ap
–Q
ap –L
Parameter
Table 6-3. ap Command Parameter
| Parameter | Description |
|---|---|
| -S | Set AP mode. |
| -s ssid | Set AP ssid. |
| -p password | Set AP password. |
| -t encrypt | Set AP encrypt mode. |
| -h | Hide ssid. |
| -m max_sta | Set AP max connections. |
| -Q | Show AP parameters. |
| -L | Show MAC Address and IP Address of the connected station. |
mac
Description
mac commands are used to query the MAC address of the network interface.
Example
mac -Q [-o mode]
Parameter
Table 6-4. mac Command Parameter
| Parameter | Description |
|---|---|
| -Q | Show MAC address. |
| -o mode | • mode = 1: MAC address in STA mode. |
• mode = 2: MAC address in AP mode.
dhcp
Description
dhcp commands are used to enable or disable dhcp server/client.
Example
dchp -S [-o mode] dhcp -E [-o mode] dhcp -Q [-o mode]
Parameter
Table 6-5. dhcp Command Parameter
| Parameter | Description |
|---|---|
| -S | Start DHCP (Client/Server). |
| -E | End DHCP (Client/Server). |
| -Q | show DHCP status. |
| -o mode | • mode = 1: DHCP client of STA interface. |
• mode = 2: DHCP server of AP interface.
• mode = 3: both.
ip
Description
ip commands are used to set and query the IP address of the network interface.
Example
ip -Q [-o mode] ip -S [-i ip] [-o mode] [-m mask] [-g gateway]
Parameter
Table 6-6. ip Command Parameter
| Parameter | Description |
|---|---|
| -Q | Show IP address. |
| -o mode | • mode = 1: IP address of interface STA. |
• mode = 2: IP address of interface AP.
• mode = 3: both
-S| Set IP address.
-i ip| IP address.
-m mask| Subnet address mask.
-g gateway| Default gateway.
reboot
Description
reboot command is used to reboot the board.
Example
reboot
ram
ram command is used to query the size of the remaining heap in the system.
Example
ram
FCC Caution:
Any changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
IMPORTANT NOTE:
Note: This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated with
a minimum distance of 20cm between the radiator& your body.
Version 1.1
Copyright © 2021
References
- GitHub - espressif/arduino-esp32: Arduino core for the ESP32
- arduino.cc/en/Guide/Linux
- arduino.cc/en/Guide/MacOSX
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