ESP32-C6-LCD-1.9
Without touch version

300px link=https://www.waveshare.com/ESP32-C6-LCD-1.9.htm

ESP32-C6, UART/I2C/USB

ESP32-C6-Touch-LCD-1.9
With touch version

300px link=https://www.waveshare.com/ESP32-C6-Touch-LCD-1.9.htm

ESP32-C6, UART/I2C/USB

Overview

Introduction

This product adopts the ESP32-C6FH8 chip, supports 2.4GHz Wi-Fi 6 and BLE 5 Bluetooth functions, has stacked 8MB Flash, and features a built-in 1.9inch LCD display, which can smoothly run GUI interface programs like LVGL. It has onboard QMI8658 six-axis sensors, TF card slot, and lithium battery charging peripherals, and reserves Pico-compatible pin interfaces, with strong compatibility and expandability, suitable for quick development of HMI applications for ESP32-C6.

Features

Equipped with ESP32-C6 high-performance 32-bit RISC-V processor, up to 160MHz main frequency
Supports 2.4GHz Wi-Fi 6 (802.11 ax/b/g/n) and Bluetooth 5 (BLE), with onboard antenna
Built-in 512KB HP SRAM, 16KB LP SRAM, and 320KB ROM, stacked with 8MB Flash
Onboard 1.9inch LCD screen with a resolution of 170×320, 262K colors for clear color pictures
Onboard QMI8658 6-axis IMU (3-axis accelerometer and 3-axis gyroscope) for motion attitude detection and extended applications
Onboard USB Type-C port for power supply, firmware downloading and debugging, making development more convenient
Onboard 3.7V MX1.25 lithium battery recharge/discharge header
Onboard TF card slot, supporting external TF card storage for pictures or files
Onboard Pico-compatible interface, providing rich peripheral interfaces, with strong compatibility and expandability

Onboard Resources

1. ESP32-C6FH8
    Stacked 8Mb Flash, running at a frequency of up to 160MHz
2. TCA9554
    Expand 8-channel GPIO chip to enhance IO flexibility
3. MX1.25 3.7V Lithium battery interface
    For connecting lithium batteries, supports charging and discharging functions
4. RESET button
    System reset for easy debugging
5. USB Type-C interface
    Support power input and data transmission
6. TF card slot (back)
    For extended storage, supports TF card

7. Charge indicator
    The indicator light turns off when fully charged
8. BOOT button
    For downloading programs or entering boot mode
9. WS2812 (Backside, for without touch version only)
    RGB lamp beads, support colorful light effects
10. QMI8658 (Backsdie)
    6-axis IMU (3-axis gyroscope + 3-axis accelerometer)
11. IPEX1 external antenna interface (With touch version only)
    (resoldering required)
12. Patch ceramic antenna
    Onboard antenna design, space saving, stable signal

Interfaces

For more details, please refer to the Schematic Diagram

Dimensions

ESP32-C6-LCD-1.9

ESP32-C6-Touch-LCD-1.9

LCD Parameters

Usage Instructions

Currently there are two development tools and frameworks, Arduino IDE and ESP-IDF, providing flexible development options, you can choose the right development tool according to your project needs and personal habits.

Development Tools

Arduino IDE

Arduino IDE is an open source electronic prototyping platform, convenient and flexible, easy to get started. After a simple learning, you can start to develop quickly. At the same time, Arduino has a large global user community, providing an abundance of open source code, project examples and tutorials, as well as rich library resources, encapsulating complex functions, allowing developers to quickly implement various functions.

ESP-IDF

ESP-IDF, or full name Espressif IDE, is a professional development framework introduced by Espressif Technology for the ESP series chips. It is developed using the C language, including a compiler, debugger, and flashing tool, etc., and can be developed via the command lines or through an integrated development environment (such as Visual Studio Code with the Espressif IDF plugin). The plugin offers features such as code navigation, project management, and debugging, etc.

Each of these two development approaches has its own advantages, and developers can choose according to their needs and skill levels. Arduino are suitable for beginners and non-professionals because they are easy to learn and quick to get started. ESP-IDF is a better choice for developers with a professional background or high performance requirements, as it provides more advanced development tools and greater control capabilities for the development of complex projects.

Components Preparation

ESP32-C6-LCD-1.9 x1
TF card x 1 (Optional)
USB cable (Type A male to Type C male) x 1

Before operating, it is recommended to browse the table of contents to quickly understand the document structure. For smooth operation, please read the FAQ carefully to understand possible problems in advance. All resources in the document are provided with hyperlinks for easy download.

Working with Arduino

This chapter introduces setting up the Arduino environment, including the Arduino IDE, management of ESP32 boards, installation of related libraries, program compilation and downloading, as well as testing demos. It aims to help users master the development board and facilitate secondary development.

Environment Setup

Download and Install Arduino IDE

Click to visit the Arduino official website, select the corresponding system and system bit to download
Run the installer and install all by default

The environment setup is carried out on the Windows 10 system, Linux and Mac users can access Arduino-esp32 environment setup for reference

Install ESP32 Development Board

Before using ESP32-related motherboards with the Arduino IDE, you must first install the software package for the esp32 by Espressif Systems development board
According to board installation requirement, it is generally recommended to use Install Online. If online installation fails, use Install Offline.
For the installation tutorial, please refer to Arduino board manager tutorial

ESP32-C6-LCD-1.9 Development board installation instructions
Board name	Board installation requirement	Version number requirement
ESP32-C6-LCD-1.9/ESP32C6 Dev Module	"Install Offline" / "Install Online"	≥3.0.7

Install Library

When installing Arduino libraries, there are usually two ways to choose from: Install online and Install offline. If the library installation requires offline installation, you must use the provided library file
For most libraries, users can easily search and install them through the online library manager of the Arduino software. However, some open-source libraries or custom libraries are not synchronized to the Arduino Library Manager, so they cannot be acquired through online searches. In this case, users can only manually install these libraries offline.
For library installation tutorial, please refer to Arduino library manager tutorial
ESP32-C6-LCD-1.9 library file is stored in Demo at the following path:
```
..\ESP32-C6-LCD-1.9-Demo\Arduino\libraries
```

ESP32-C6-LCD-1.9-Demo library file installation description
Library Name	Description	Version	Library Installation Requirement
LVGL	Graphical library	v8.4.0	"Install Offline"
Arduino_GFX_Library	Graphics library	v1.5.6	"Install Online" or "Install Offline"
Freenove_WS2812_Lib_for_ESP32	WS2812 driver library	v2.0.0	"Install Online" or "Install Offline"

Run the First Arduino Demo

If you are just getting started with ESP32 and Arduino, and you don't know how to create, compile, flash, and run Arduino ESP32 programs, then please expand and take a look. Hope it can help you!

New Project

Run the Arduino IDE and select File -> New Sketch
Enter the code:

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
}

void loop() {
  // put your main code here, to run repeatedly:
  Serial.println("Hello, World!");
  delay(2000);
}

Save the project and select File -> Save As.... In the pop-up menu, select the path to save the project, and enter a project name, such as Hello_World, click Save

Compile and Flash Demos

Select the corresponding development board, take the ESP32S3 motherboard as an example:

①. Click to select the dropdown menu option Select Other Board and Port;
②. Search for the required development board model esp32s3 dev module and select;
③. Select COM Port;
④. Save the selection.

Some development boards with specified version numbers support direct model selection, for example, "Waveshare ESP32-S3-LCD-1.69":

If the ESP32S3 mainboard only has a USB port, you need to enable USB CDC, as shown in the following diagram:

Compile and upload the program:

①. Compile the program; ②. Compile and download the program; ③. Download successful.

Open the Serial Monitor window, and the demo will print "Hello World!" every 2 seconds, and the operation is as follows:

Demo

ESP32-C6-LCD-1.9 demo
Demo	Basic Description	Dependency Library
01_ADC_Test	Read the current voltage value of the system	-
02_I2C_QMI8658	Print the original data sent by the IMU	-
03_SD_Card	Load and display the information of the TF card	-
04_WS2812_Test	Drive WS2812RGB LED beads	Freenove_WS2812_Lib_for_ESP32
05_WIFI_AP	Set to AP mode to obtain the IP address of the access device	-
06_WIFI_STA	Set to STA mode to connect to WiFi and obtain an IP address	-
07_Hello_World_GFX	GFX basic demo	Arduino_GFX_Library
08_LVGL_Test	LVGL demo	LVGL

01_ADC_Test

Demo description

The analog voltage connected through the GPIO is converted to digital by the ADC, and then the actual system voltage is calculated and printed to the terminal.

Hardware connection

Connect the board to the computer using a USB cable

Code analysis

adc_bsp_init(void) : Initializes ADC1, including creating an ADC one-time trigger unit and configuring channel 0 for ADC1.
adc_get_value(float *value,int *data) : Reads the value of ADC1 channel 0 and calculates the corresponding voltage value based on the reference voltage and resolution, stores it at the position where the incoming pointer points to, and stores 0 if the read fails.
adc_example(void* parameter): Initialize ADC1 and then create an ADC task that reads the ADC value every 1 second and calculates the system's voltage based on the raw ADC value.

Result demonstration

The program compilation download is complete, and opening the serial port monitor will show the printed ADC values and voltage, as shown in the following figure:

The ADC sampling value is about 1900, and the system voltage is about 4.9V. For a detailed analysis, you can refer to the Schematic Diagram.

02_I2C_QMI8658

Demo description

Through I2C protocol, initialize the QMI8658 chip, then read and print the corresponding attitude information every 1 second to the terminal.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code analysis

qmi8658c_example(void* parameter): The function initializes the QMI8658 device, reading and printing accelerometer data, gyroscope data, and temperature data in an infinite loop, once every second. During the rotation of the board, the gyroscope data increases with greater rotation speed, and the accelerometer calculates the corresponding acceleration based on the current position.

Result demonstration

Open the serial port monitoring, and you can see the original data output from the IMU (Euler angles need to be converted by yourself), as shown in the following figure:

Data is output once every second. If you need to modify or refer to it, you can directly access the qmi source file for operations.

03_SD_Card

Demo description

By using the SPI bus to drive the TF card, after the TF card is successfully mounted, the TF card information is printed to the terminal, and the data is read and written to the writeTest.txt file every 1 second.

Hardware connection

Connect the fat32 format TF card to the board and use a USB cable to connect the board to the computer (refer to demo 01)

Code analysis

In the 03_SD_Card.ino file, find the #define sdcard_write_Test and cancel the macro definition comment, you can test the TF card read and write function.

//#define sdcard_write_Test

Result demonstration

Click on the serial port monitoring device, you can see the information of the output TF card, practical_size is the actual capacity of the TF card, as shown in the figure below:

04_WS2812_Test

Demo description

Drive WS2812RGB LED beads to achieve a flowing rainbow effect, this demo is only applicable to ESP32-C6-LCD-1.9.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code analysis

First analyze the macro definitions of the file.

#define LEDS_COUNT  2 // Number of WS2812-RGB LED beads
#define LEDS_PIN    3 //WS2812-GPIO control pin
#define CHANNEL	    0 //WS2812 control channel

Analyze the main functions.

strip.setLedColorData(id, color); //id: The ID of the RGB beads, color: The actual color 0XFF0000 which means red
strip.setLedColorData(id, r, g, b); //r, g, b: The actual values of the three primary colors
strip.show();//Push the color data to WS2812

Result demonstration

The actual effect is as follows:

05_WIFI_AP

Demo description

This demo can set the development board as a hotspot, allowing phones or other devices in STA mode to connect to the development board.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code analysis

In the file 05_WIFI_AP.ino, find ssid and password, then a phone or other device in STA mode can connect to the development board using these ssid and password.

const char *ssid = "ESP32_AP";
const char *password = "12345678";

Result demonstration

After flashing the program, open the serial terminal, if the device is successfully connected to the hotspot, the MAC address of the device will be output, as shown in the figure:

06_WIFI_STA

Demo description

The development board is used as a terminal role, which can connect to the AP available in the environment, and print the obtained IP information to the terminal after successful connection.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code modification

The project realizes that the chip is connected to WIFI in STA mode and obtains the IP address, before compiling and downloading the firmware, some code needs to be modified, specifically changing the name and password of the WIFI router to those suitable for the environment.

Code analysis

wifi_init(void): This function is used to initialize the Wi-Fi connection of the ESP32. It sets the ESP32 to Wi-Fi site mode and tries to connect to the specified Wi-Fi network (via the ssid and password). If the connection is successful, it prints the local IP address; if the connection fails within a certain period (20 * 500 milliseconds), it prints the connection failure message. At the same time, the function can also set the auto-connection and auto-reconnect functions.

Result demonstration

The chip is successfully connected to WIFI in STA mode, and you can see the obtained IP address by clicking on the serial port monitoring device, as shown in the figure:

07_Hello_World_GFX

Demo description

Implement some basic GUI interface on the screen by porting the Arduino_GFX_Library.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code analysis

LCD can be driven by configuring the two classes Arduino_DataBus and Arduino_GFX.

Arduino_DataBus *bus = new Arduino_HWSPI(6 /* DC */, 7 /* CS */, 5 /* SCK */, 4 /* MOSI */);
Arduino_GFX *gfx = new Arduino_ST7789(bus, 14 /* RST */,0 /*rotation*/,0/*IPS*/,170/*w*/,320/*h*/,35/*offsetx1*/,0/*offsety1*/,35/*offsetx2*/,0/*offsety2*/);

Result demonstration

After flashing the program, you can see multiple formats of Hello World displayed on the screen, as shown in the figure:

08_LVGL_Test

Demo description

Implement some multifunctional GUI interfaces on the screen by porting LVGL.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code analysis

For LVGL, lvgl_conf.h is its configuration file, and below are explanations for some commonly used contents.

/*Color depth: 1 (1 byte per pixel), 8 (RGB332), 16 (RGB565), 32 (ARGB8888)*/
#define LV_COLOR_DEPTH 16//Color depth, a macro definition that must be concerned with porting LVGL


#define LV_MEM_CUSTOM 0
#if LV_MEM_CUSTOM == 0
    /*Size of the memory available for `lv_mem_alloc()` in bytes (>= 2kB)*/
    #define LV_MEM_SIZE (48U * 1024U)          /*[bytes]*/

    /*Set an address for the memory pool instead of allocating it as a normal array. Can be in external SRAM too.*/
    #define LV_MEM_ADR 0     /*0: unused*/
    /*Instead of an address give a memory allocator that will be called to get a memory pool for LVGL. E.g. my_malloc*/
    #if LV_MEM_ADR == 0
        #undef LV_MEM_POOL_INCLUDE
        #undef LV_MEM_POOL_ALLOC
    #endif

#else       /*LV_MEM_CUSTOM*/
    #define LV_MEM_CUSTOM_INCLUDE <stdlib.h>   /*Header for the dynamic memory function*/
    #define LV_MEM_CUSTOM_ALLOC   malloc
    #define LV_MEM_CUSTOM_FREE    free
    #define LV_MEM_CUSTOM_REALLOC realloc
#endif     /*LV_MEM_CUSTOM*/
//The above section is mainly for LVGL memory allocation, 
//which defaults to lv_mem_alloc() versus lv_mem_free().

There are also some LVGL demos and file systems that can be set in the conf configuration file.

Code modification

If you need to rotate the display by 90 degrees, you can find the macro definition of Direction in the lcd_config.h file, and choose one of the two.

#define Rotate 1    //Rotation 90
#define Normal 0    //Normal
#define Direction   Normal

In order to be compatible with ESP32-C6-LCD-1.9, Touch is not enabled by default in the demo. If you need to enable it, you can find the macro definition of EXAMPLE_USE_TOUCH in lcd_config.h file and set it to 1.

#define EXAMPLE_USE_TOUCH      0

The TF card and screen on the board share SPI. To enable coexistence, you can find the macro definition of EXAMPLE_USE_SDCARD in lcd_config.h file and set it to 1.

#define EXAMPLE_USE_SDCARD     0

Result demonstration

After the demo is flashed, the running result of the device is as follows:

For more learning and use of LVGL, please refer to LVGL official documentation

Working with ESP-IDF

This chapter introduces setting up the ESP-IDF environment setup, including the installation of Visual Studio and the Espressif IDF plugin, program compilation, downloading, and testing of demos, to assist users in mastering the development board and facilitating secondary development.

Environment Setup

Download and Install Visual Studio

Open the download page of VScode official website, choose the corresponding system and system bit to download
After running the installation package, the rest can be installed by default, but here for the subsequent experience, it is recommended to check boxes 1, 2, and 3
- After the first two items are enabled, you can open VSCode directly by right-clicking files or directories, which can improve the subsequent user experience.
- After the third item is enabled, you can select VSCode directly when you choose how to open it

The environment setup is carried out on the Windows 10 system, Linux and Mac users can access ESP-IDF environment setup for reference

Install Espressif IDF Plugin

It is generally recommended to use Install Online. If online installation fails due to network factor, use Install OIffline.
For more information about how to install the Espressif IDF plugin, see Install Espressif IDF Plugin

Run the First ESP-IDF Demo

If you are just getting started with ESP32 and ESP-IDF, and you don't know how to create, compile, flash, and run ESP-IDF ESP32 programs, then please expand and take a look. Hope it can help you!

New Project

Create Demo

Using the shortcut F1, enter esp-idf:show examples projects

Select your current IDF version

Take the Hello world demo as an example

①Select the corresponding demo
②Its readme will state what chip the demo applies to (how to use the demo and the file structure are described below, omitted here)
③Click to create the demo

Select the path to save the demo, and require that the demos cannot use folders with the same name

Modify COM Port

The corresponding COM ports are shown here, click to modify them
Please select the COM ports according to your device (You can view it from the device manager)
In case of a download failure, please press the Reset button for more than 1 second or enter download mode, and wait for the PC to recognize the device again before downloading once more

Modify Driver Object

Select the object we need to drive, which is our main chip ESP32S3

Choose the path to openocd, it doesn't affect us here, so let's just choose one

Other Status Bar Functions

①.ESP-IDF Development Environment Version Manager, when our project requires differentiation of development environment versions, it can be managed by installing different versions of ESP-IDF. When the project uses a specific version, it can be switched to by utilizing it
②.Device flashing COM port, select to flash the compiled program into the chip
③.Select set-target chip model, select the corresponding chip model, for example, ESP32-P4-NANO needs to choose esp32p4 as the target chip
④.menuconfig, click it to Modify sdkconfig configuration file Project configuration details
⑤.fullclean button, when the project compilation error or other operations pollute the compiled content, you can clean up all the compiled content by clicking it
⑥.Build project, when a project satisfies the build, click this button to compile
⑦.Current download mode, the default is UART
⑧.flash button, when a project build is completed, select the COM port of the corresponding development board, and click this button to flash the compiled firmware to the chip
⑨.monitor enable flashing port monitoring, when a project passes through Build --> Flash, click this button to view the log of output from flashing port and debugging port, so as to observe whether the application works normally
⑩.Debug
⑪.Build Flash Monitor one-click button, which is used to continuously execute Build --> Flash --> Monitor, often referred to as "little flame"

Compile, Flash and Serial Port Monitor

Click on the all-in-one button we described before to compile, flash and open the serial port monitor

It may take a long time to compile especially for the first time

During this process, the ESP-IDF may take up a lot of CPU resources, so it may cause the system to lag
If it is the first time to flash the program for a new project, you will need to select the download method, and select UART

This can also be changed later in the Download methods section (click on it to pop up the options)

As it comes with the onboard automatic download circuit, it can be downloaded automatically without manual operation
After successful download, it will automatically enter the serial monitor, you can see the chip output the corresponding information and be prompted to restart after 10S

Use the IDF Demos

The following takes ESP32-S3-LCD-1.47-Demo as an example to introduce the two opening methods of the project and the general steps of use, and the detailed explanation of the ESP-IDF project. If you use other projects, the operation steps can be applied similarly.

Open In the Software

Open VScode software and select the folder to open the demo

Select the provided ESP-IDF example and click to select the file (located in the /Demo/ESP-IDF path under demo)

Open from Outside the Software

Select the project directory correctly and open the project, otherwise it will affect the compilation and flashing of subsequent programs

After connecting the device, select the COM port and model, click below to compile and flash to achieve program control

ESP-IDF Project Details

Component: The components in ESP-IDF are the basic modules for building applications, each component is usually a relatively independent code base or library, which can implement specific functions or services, and can be reused by applications or other components, similar to the definition of libraries in Python development.
- Component reference: The import of libraries in the Python development environment only requires to "import library name or path", while ESP-IDF is based on the C language, and the importing of libraries is configured and defined through CMakeLists.txt.
- The purpose of CmakeLists.txt: When compiling ESP-IDF, the build tool CMake first reads the content of the top-level CMakeLists.txt in the project directory to read the build rules and identify the content to be compiled. When the required components and demos are imported into the CMakeLists.txt, the compilation tool CMake will import each content that needs to be compiled according to the index. The compilation process is as follows:

Demo

ESP32-C6-LCD-1.9 demo
Demo	Basic Description	Dependency Library
01_ADC_Test	Read the current voltage value of the system	-
02_I2C_QMI8658	Print the original data sent by the IMU	-
03_SD_Card	Load and display the information of the TF card	-
04_WS2812_Test	Drive WS2812RGB LED beads	-
05_WIFI_AP	Set to AP mode to obtain the IP address of the access device	-
06_WIFI_STA	Set to STA mode to connect to WiFi and obtain an IP address	-
07_LVGL_Test	LVGL demo	LVGL
08_FactoryProgram	Comprehensive demo	LVGL

01_ADC_Test

Demo description

The analog voltage connected through the GPIO is converted to digital by the ADC, and then the actual system voltage is calculated and printed to the terminal.

Hardware connection

Connect the board to the computer using a USB cable

Code analysis

adc_bsp_init(void) : Initializes ADC1, including creating an ADC one-time trigger unit and configuring channel 0 for ADC1.
adc_get_value(float *value,int *data) : Reads the value of ADC1 channel 0 and calculates the corresponding voltage value based on the reference voltage and resolution, stores it at the position where the incoming pointer points to, and stores 0 if the read fails.
adc_example(void* parameter): Initialize ADC1 and then create an ADC task that reads the ADC value every 1 second and calculates the system's voltage based on the raw ADC value.

Result demonstration

The program compilation download is complete, and opening the serial port monitor will show the printed ADC values and voltage, as shown in the following figure:

The ADC sampling value is about 1900, and the system voltage is about 4.9V. For a detailed analysis, you can refer to the Schematic Diagram.

02_I2C_QMI8658

Demo description

Through I2C protocol, initialize the QMI8658 chip, then read and print the corresponding attitude information every 1 second to the terminal.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code analysis

qmi8658c_example(void* parameter): The function initializes the QMI8658 device, reading and printing accelerometer data, gyroscope data, and temperature data in an infinite loop, once every second. During the rotation of the board, the gyroscope data increases with greater rotation speed, and the accelerometer calculates the corresponding acceleration based on the current position.

Result demonstration

After the demo is flashed, the running result of the device is as follows:

Open the serial port monitoring, and you can see the original data output from the IMU (Euler angles need to be converted by yourself), as shown in the following figure:

You can see that it is output every 1 second. If you need to modify or refer to it, you can directly go to the qmi source file to modify it

03_SD_Card

Demo description

By using the SPI bus to drive the TF card, after the TF card is successfully mounted, the TF card information is printed to the terminal, and the data is read and written to the writeTest.txt file every 1 second.

Hardware connection

Connect the fat32 format TF card to the board and use a USB cable to connect the board to the computer (refer to demo 01)

Code analysis

In the user_app.c file, find the #define sdcard_write_Test and cancel the macro definition comment, you can test the TF card read and write function.

//#define sdcard_write_Test

Result demonstration

Click on the serial port monitoring device, you can see the information of the output TF card, practical_size is the actual capacity of the TF card, as shown in the figure below:

04_WS2812_Test

Demo description

Drive WS2812RGB LED beads to achieve a flowing rainbow effect, this demo is only applicable to ESP32-C6-LCD-1.9.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code analysis

First analyze the macro definitions of ws2812_bsp.h file.

#define LEDS_COUNT  2 // Number of WS2812-RGB LED beads
#define LEDS_PIN    3 //WS2812-GPIO control pin

Analyze the main functions.

void ws2812_Init(void); //Initialize ws2812
uint32_t ws2812_Wheel(uint8_t pos); //Convert 0-255 colors to standard 24-bit RGB color values
void ws2812_set_pixel(uint8_t id,uint8_t r,uint8_t g,uint8_t b); //Push the r, g, and b color values to the corresponding WS2812

Result demonstration

The actual effect is as follows:

05_WIFI_AP

Demo description

This demo can set the development board as a hotspot, allowing phones or other devices in STA mode to connect to the development board.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code analysis

In the file softap_example_main.c, find SSID and PASSWORD, and then your phone or other device in STA mode can use the SSID and PASSWORD to connect to the development board.

#define EXAMPLE_ESP_WIFI_SSID      "waveshare_esp32"
#define EXAMPLE_ESP_WIFI_PASSWORD      "wav123456"

Result demonstration

After flashing the program, open the serial terminal, if the device is successfully connected to the hotspot, the MAC address and IP address of the device will be output, as shown in the figure:

06_WIFI_STA

Demo description

This example can configure the development board as a STA device to connect to the router and access the system network.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code analysis

In the file esp_wifi_bsp.c, find ssid and password, then modify them to the SSID and Password of the available router in your current environment.

wifi_config_t wifi_config = {
      .sta = {
        .ssid = "PDCN",
        .password = "1234567890",
      },
  };

Result demonstration

After flashing the program, open the serial terminal, if the device is successfully connected to the hotspot, the IP address obtained will be output, as shown in the figure:

07_LVGL_Test

Demo description

Implement some multifunctional GUI interfaces on the screen by porting LVGL.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code analysis

If you need to rotate the display by 90 degrees, you can find the macro definition of Direction in the main.c file, and choose one of the two.

#define Rotate 1    //Rotation 90
#define Normal 0    //Normal
#define Direction   Normal

In order to be compatible with ESP32-C6-LCD-1.9, Touch is not enabled by default in the demo. If you need to enable it, you can find the macro definition of EXAMPLE_USE_TOUCH in main.c file and set it to 1.

#define EXAMPLE_USE_TOUCH      0

The TF card and screen on the board share SPI. To enable coexistence, you can find the macro definition of EXAMPLE_USE_SDCARD in main.c file and set it to 1.

#define EXAMPLE_USE_SDCARD     0

Result demonstration

After the demo is flashed, the running result of the device is as follows:

For more learning and use of LVGL, please refer to LVGL official documentation

08_FactoryProgram

Demo description

This is a comprehensive project for testing onboard functionality. This example requires a specific IDF version, and versions V5.2.0 and above may not be able to scan for surrounding WiFi. If the test fails due to a high version, you can compile using a lower version or directly use the BIN firmware we provide.

Hardware connection

Connect the board to the computer using a USB cable (refer to demo 01)

Code analysis

ESP32-C6-LCD-1.9 switches the pages by clicking the BOOT button, double click to turn on/off the backlight, and long press to test the TF card read/write; ESP32-C6-Touch-LCD-1.9 can be controlled through the BOOT button or Touch.

Result demonstration

The program flashing is complete, wait for the three primary colors to be displayed, as shown in the figure:

After the RGB is displayed, it will automatically jump to the clock interface,as shown below:

Click the BOOT button to switch pages, and you can see that this page contains some onboard hardware information, as shown in the figure:

Flash Firmware Flashing and Erasing

The current demo provides test firmware, which can be used to test whether the onboard device functions properly by directly flashing the test firmware
bin file path:
```
..\ESP32-C6-LCD-1.9-Demo\Firmware
```

Flash firmware flashing and erasing for reference

Resources

Schematic Diagram

Demo

ESP32-C6-LCD-1.9 Demo

Dimensions and Appearance File

Datasheets

ESP32-C6

Other Components

Software Tools

Arduino

VScode

VScode official website

Firmware Flashing Tool

flash_download_tool_3.9.7

FAQ

Question: After the module downloads the demo and re-downloads it, why sometimes it can't connect to the serial port or the flashing fails?

Answer:

Long press the BOOT button, press RESET at the same time, then release RESET, then release the BOOT button, at this time the module can enter the download mode, which can solve most of the problems that can not be downloaded.

Question: Failed to set up the VSCode environment?

Answer:

First consider the network issue, try switching to another network

Question: Unstable display/backlight?

Answer:

Is there a conductor (e.g. hand) that touches the pin header over a large area?

Question: Is it stuck when sliding pictures displayed?

Answer:

Modify LVGL display cache to the full screen size
Modify the LV_IMG_CACHE_DEF_SIZE option in the configuration to 1000 to achieve some optimization

Question: Can't display Chinese?

Answer:

Basic Chinese can be displayed, but if it is a rare character, it cannot be displayed
You can transcode the required rare characters through the transcoding software, and then add them to the project font library

Question: How to deal with the first compilation of the program being extremely slow?

Answer:

It's normal for the first compilation to be slow, just be patient

Question: How to handle the display "waiting for download..." on the serial port after successfully ESP-IDF flashing?

Answer:

Plug and unplug the USB

Question: What should I do if I can't find the AppData folder?

Answer:

Some AppData folders are hidden by default and can be set to show.
English system: Explorer->View->Check "Hidden items"
Chinese system: File Explorer -> View -> Display -> Check "Hidden Items"

Question: How do I check the COM port I use?

Answer:

Windows system:

①View through Device Manager: Press the Windows + R keys to open the "Run" dialog box; input devmgmt.msc and press Enter to open the Device Manager; expand the "Ports (COM and LPT)" section, where all COM ports and their current statuses will be listed.
②Use the command prompt to view: Open the Command Prompt (CMD), enter the "mode" command, which will display status information for all COM ports.
③Check hardware connections: If you have already connected external devices to the COM port, the device usually occupies a port number, which can be determined by checking the connected hardware.

Linux system:

①Use the dmesg command to view: Open the terminal.
①Use the ls command to view: Enter ls /dev/ttyS* or ls /dev/ttyUSB* to list all serial port devices.
③Use the setserial command to view: Enter setserial -g /dev/ttyS* to view the configuration information of all serial port devices.

Question: Why does the program flashing fail when using a MAC device?

Answer:

Install MAC Driver and flash again.

Question: How to use SquareLine Studio to design interfaces?

Answer:

Please refer to SquareLine Studio tutorial

Support

Technical Support

If you need technical support or have any feedback/review, please click the Submit Now button to submit a ticket, Our support team will check and reply to you within 1 to 2 working days. Please be patient as we make every effort to help you to resolve the issue.
Working Time: 9 AM - 6 PM GMT+8 (Monday to Friday)

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ESP32-C6-LCD-1.9

Overview

Introduction

Features

Onboard Resources

Interfaces

Dimensions

ESP32-C6-LCD-1.9

ESP32-C6-Touch-LCD-1.9

LCD Parameters

Usage Instructions

Development Tools

Arduino IDE

ESP-IDF

Components Preparation

Working with Arduino

Environment Setup

Download and Install Arduino IDE

Install ESP32 Development Board

Install Library

Run the First Arduino Demo

New Project

Compile and Flash Demos

Demo

01_ADC_Test

02_I2C_QMI8658

03_SD_Card

04_WS2812_Test

05_WIFI_AP

06_WIFI_STA

07_Hello_World_GFX

08_LVGL_Test

Working with ESP-IDF

Environment Setup

Download and Install Visual Studio

Install Espressif IDF Plugin

Run the First ESP-IDF Demo

New Project

Create Demo

Modify COM Port

Modify Driver Object

Other Status Bar Functions

Compile, Flash and Serial Port Monitor

Use the IDF Demos

Open In the Software

Open from Outside the Software

ESP-IDF Project Details

Demo

01_ADC_Test

02_I2C_QMI8658

03_SD_Card

04_WS2812_Test

05_WIFI_AP

06_WIFI_STA

07_LVGL_Test

08_FactoryProgram

Flash Firmware Flashing and Erasing

Resources

Schematic Diagram

Demo

Dimensions and Appearance File

Datasheets

ESP32-C6

Other Components

Software Tools

Arduino

VScode

Firmware Flashing Tool

Other Resource Links

FAQ

Support