EBYTE E22P-xxxXBX-SC Series Wireless Module Kit User Manual

The SC Series Evaluation Kit is designed to help users quickly
evaluate Ebyte’s next-generation footprint-compatible wireless
modules. The kit facilitates secondary development by breaking out
all available pins to two pin headers, enabling easy connection of
peripherals using jumpers.

Pin Definition

Pin number	Definition
GND	Chassis ground wire

Function Introduction

The kit includes features such as a buzzer, OLED display,
buttons for navigation, and various indicator lights for displaying
configuration and test parameters.

Product Usage Instructions

Chapter 1: Product Overview

Refer to the product overview section for an understanding of
the kit’s purpose and design.

Chapter 2: Software Introduction

Learn about the development environment and directory structure
to set up software for programming the kit.

Chapter 3: Function Demonstration

Quick Start: Follow the provided steps to
quickly start using the kit.

Realize Transparent Transmission Function Through USB
Serial Port: Learn how to achieve transparent transmission
using the USB serial port.

Frequently Asked Questions (FAQ)

Q: Can different types of Sub-1G Wireless modules be used with
this kit?

A: Yes, supported modules have pin-compatible packages and can
be quickly replaced.

Q: What is the MCU used in this evaluation kit?

A: The MCU used is STM32F103C8T6.

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E22P-xxxXBX-SC Series Evaluation Kit
User Manual
Next-generation package compatibleSub-1GWireless Module Kit

Chengdu Ebyte Electronic Technology Co.,Ltd.

E22P-xxxXBX-SCUser Manual

CHAPTER 1 PRODUCT OVERVIEW ……………………………………………………………………………………. 2
1.1 PRODUCT INTRODUCTION ……………………………………………………………………………………………………………………………………………….. 2 1.2 PIN DEFINITION ………………………………………………………………………………………………………………………………………………………………2 1.3 FUNCTION INTRODUCTION ……………………………………………………………………………………………………………………………………………. 3 1.4 PARAMETER INTRODUCTION …………………………………………………………………………………………………………………………………………. 3 1.5 COMPATIBILITY LIST ……………………………………………………………………………………………………………………………………………………… 4 1.6 PROGRAM DOWNLOAD INTERFACE………………………………………………………………………………………………………………………………. 5
CHAPTER 2 SOFTWARE INTRODUCTION ………………………………………………………………………….6
2.1 DEVELOPMENT ENVIRONMENT………………………………………………………………………………………………………………………………………..6 2.2 DIRECTORY STRUCTURE ………………………………………………………………………………………………………………………………………………….. 7
CHAPTER 3 FUNCTION DEMONSTRATION ……………………………………………………………………….8
3.1 QUICK START…………………………………………………………………………………………………………………………………………………………………… 8 3.2 REALIZE TRANSPARENT TRANSMISSION FUNCTION THROUGH USB SERIAL PORT……………………………………………………… 11
CHAPTER 4 FREQUENTLY ASKED QUESTIONS ……………………………………………………………..13
4.1THE TRANSMISSION DISTANCE IS NOT IDEAL ………………………………………………………………………………………………………………… 13 4.2 MODULE IS EASILY DAMAGED ……………………………………………………………………………………………………………………………………..14 4.3 THE BIT ERROR RATE IS TOO HIGH …………………………………………………………………………………………………………………………………14
ABOUT US ……………………………………………………………………………………………………………………………… 14

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Chapter 1 Product Overview

1.1 Product Introduction

model

front

E22P-xxxXBX-SCUser Manual
back

High Power
Kit

E22P-xxxM BH-SC

The SC Series Evaluation Kit is designed to help users quickly evaluate Ebyte’s next-generation footprint-compatible wireless modules. The MCU uses the STM32F103C8T6, and all available pins are broken out to two pin headers. Developers can easily connect a variety of peripherals using jumpers, facilitating secondary development.
The kit provides complete software application examples to help customers quickly get started with wireless data communication development. Different types of Sub-1GWireless modules. Supported modules have pin-compatible packages and can be quickly replaced.
1.2 Pin Definition

Pin number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

definition GND PA2 PA1 PA0 PB8 VBAT PC13 GND GND +5V GND 3.3V CLK DIO GND RXD TXD PA8 PB15

Exx-xxxMBH-SC Functional Description Chassis ground wire MCU_PA2 pin MCU_PA1 pin MCU_PA0 pin MCU_PB8 pin MCU_VBAT pin MCU_PC13 pin Chassis ground wire Chassis ground wire
5V power supply interface Chassis ground wire
3.3V power supply interface SWCLK SWDIO
Chassis ground wire MCU_RXD data input pin MCU_TXD data output pin
MCU_PA8 pin MCU_PB15 pin

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PB14

1.3 Function Introduction

MCU_PB14 pin

E22P-xxxXBX-SCUser Manual

BEEP

Display button
indicator light Test resistance
buzzer

0.96 OLED Up
Confirm/OK DOWN TXD RXD PWR TR BEEP

Display current configuration, test parameters, version information, etc. Up key, select or add upwards, supports continuous click when setting
frequency and power Confirm key to enter the next page or exit the last page Down key, select or decrease downwards, supports continuous click when
setting frequency and power Transmit indicator light, flashes once each time it is sent
Receiving indicator light flashes once it receives a signal
Power indicator light, always on when powered on Remove the test resistor and connect an ammeter in series to test the module
current. Beeps once when a key is pressed

1.4 Parameter Introduction

Serial number
1 2 3
3 4

Parameter name
Test board size
Production process Antenna interface Power supply interface Operating

Parameter value MBH-SC 30*85mm
Lead-free process, machine mounting
SMA

Notes
Machine labeling can ensure batch
consistency and reliability –

Type-C

USB to Type-C

-40 ~ +85

–

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temperature Operating 5 humidity Storage 6 temperature

10% ~90% -40 ~ +125

E22P-xxxXBX-SCUser Manual
–

1.5 Compatibility List

Low power module
High-power modules

SPI UART
SPI UART

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 twenty one twenty two twenty three twenty four 25 26 27 28 29

E22-400M22S E22-900M22S E32-400M20S E32-900M20S E220-400M22S E220-900M22S E22-400T22S E22-900T22S E32-433T20S E32-900T20S E220-400T22S E220-900T22S E22-400M30S E22-900M30S E32-400M30S E32-900M30S E220-400M30S E220-900M30S E290-400M20S(3060) E290-400M20S(3029)
E290-400M30S(3029)
E290-400M30S(3060)
E22P-868M30S
E22P-915M30S
E22-400T30S E22-900T30S E32-433T30S E32-900T30S E220-400T30S

E22-400/900MBL-SC E32-400/900MBL-SC E220-400/900MBL-SC E22-400/900TBL-SC E32-433/900TBL-SC E220-400/900TBL-SC E22-400/900MBH-SC E32-400/900MBH-SC E220-400/900MBH-SC EWT290-400MBL-SC
EWT290-400MBH-SC
E22P-868MBH-SC E22P-915MBH-SC E22-400/900TBH-SC E32-433/900TBH-SC E220-400/900TBH-SC

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30

E220-900T30S

1.6 Program Download Interface

E22P-xxxXBX-SCUser Manual

Take E22-400MBH-SC as an example for the M series T series takes E22-400TBL-SC as an example You can use ST-LINK to program the MCU. Please compile the program before programming.

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Chapter 2 Software Introduction
2.1 Development Environment
2.1.1 STM32CubeMX Recommended tool version v6.9.2

E22P-xxxXBX-SCUser Manual

STM32 firmware package version v1.8.5

2.1.2 MDK-ARM Keil version v5.31.0
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2.2 Directory structure

E22P-xxxXBX-SCUser Manual

matter

illustrate

1 File Directory You can download the sample project from the official website and open the

directory as shown below.

2 Project launch There is a startup file under MDK-ARM

3 Module driver The Drivers folder contains the corresponding RF chip drivers sx126x/sx127x/llcc68, etc.

4 Module Application

There is a corresponding exx_demo example in the Core/Src folder

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Chapter 3 Function Demonstration

E22P-xxxXBX-SCUser Manual

3.1 Quick Start

matter 1 front page

illustrate After power on, the default home page is entered and all configuration parameters are restored to the default state.

2 Enter the page

By clicking the entity confirmation button, you can enter the corresponding option page

3 Basic parameter settings

The M series setting page has a variety of LoRa parameters that can be adjusted according to needs. It is recommended to use Semtech’s official LoRa calculation tool for airspeed calculation. The only difference between the T series and the M series is the airspeed configuration method. After the configuration is completed, select [Exit] to confirm and return to the previous page.

The M series configuration is as follows: The T series configuration is as follows:
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E22P-xxxXBX-SCUser Manual

Functional explanation:

4 Send Test

M Series

T Series

Select

The airspeed

module

needs to be Work Working

working

LoRa SF Symbol rate calculated in Mode Mode

mode

Channel

combination Rate

Select

LoRa BW bandwidth with SF, BW, Mode Rate Mode airspeed

and CR.

Channe Working

Select

LoRa CR Coding rate

channel

Channel

Configure

Frequenc Operating Select

Transmit transmit

frequency frequency

Power power

power

Configure the

Transmit Configure

Number of number of

TX Power power

transmit power Count times sent times to send

Reverse

Configure the

screen

Number of number of times Back Backgroun background

TX Count times sent to send

Color d color

color

Reverse screen

Back

Backgroun background

Color

d color

color

After entering Tx Mode, it automatically starts sending data packets according to the

user-set parameters (the default single packet is 10 bytes).

Press the “Confirm” button on the page to exit and return to the previous page

After sending is completed, press the “Down” key to restart sending.

The M series TX sending interface is as follows: The T series TX sending interface is as follows:
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E22P-xxxXBX-SCUser Manual

5 Acceptanc e testing

After entering Rx Mode, it automatically starts to wait for receiving wireless data according to the parameters set by the user. Press the “Confirm” button on the page to exit and return to the previous page After sending, press the “Down” key to restart receiving

The M series RX receiving interface is as follows: The T series RX receiving interface is as follows:

6 Version

Displays basic information such as module model. If there is no firmware inside the M

Information series module, NONE will be displayed.

The M series version information interface is as follows: The T series version information interface is as follows:

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E22P-xxxXBX-SCUser Manual

7 Reset

Select Reset and confirm with OK to reset the configuration and return to the home page.

3.2 Realize transparent transmission function through USB serial port

matter 1 front page

illustrate After power on, the default home page is entered and all configuration parameters are restored to the default state.

2 menu

Press any key to enter the menu page, then press the “DOWN” key to select “Setting”, and then press the “OK” key to enter the setting mode.

3 Mode Settings

In the setting mode, press the “DOWN” button to select “Work Mode”, then press the “OK” button to enter the mode setting

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E22P-xxxXBX-SCUser Manual

4 Transparent transmission mode

Set the mode to transparent mode, that is, “Mode: 0 Transparent”, press “OK” to save and return. (For the first use, please switch the mode once using the up and down keys, and then select “Mode: 0”)

5 Realize transparent Open the serial port tool to achieve transparent transmission with the

transmission

module of the same model. Note: the configuration parameters of the kit are

function through

the default parameters.

USB serial port

3.3 Realize host computer configuration function through USB serial port

matter 1 front page

illustrate After power on, the default home page is entered and all configuration parameters are restored to the default state.

2 menu

Press any key to enter the menu, select “Setting” using the “DOWN” key, and then press the “OK” key to enter the setting mode.

3 Mode Settings

In the menu, press the “DOWN” button to select “Work Mode”, then press
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the “OK” button to enter the mode setting

E22P-xxxXBX-SCUser Manual

4 Set to sleep mode

Set the mode to sleep mode, that is, “Mode: 3 Sleep”, and press the “OK” button to save and exit.

5 Realize host computer configuration function through USB serial port

Open the corresponding official website host computer to read the module parameters and configuration parameters.

Chapter 4 Frequently Asked Questions

4.1The transmission distance is not ideal
When there is a straight line communication obstacle, the communication distance will be reduced accordingly;
Temperature, humidity, and co-channel interference will increase the communication packet loss rate.; The ground absorbs and reflects radio waves, so the test results are poor near the ground.; Seawater has a strong ability to absorb radio waves, so the test results at the seaside are poor.; If there are metal objects near the antenna or the antenna is placed in a metal shell, the signal attenuation will
be very serious.; The power register is set incorrectly, or the air rate is set too high (the higher the air rate, the closer the
distance).; The power supply voltage is lower than the recommended value at room temperature. The lower the voltage,
the lower the power output.; The antenna used does not match the module well or the antenna itself may have quality issues.

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4.2 Module is easily damaged

E22P-xxxXBX-SCUser Manual

Please check the power supply to ensure that it is within the recommended power supply voltage.
Exceeding the maximum value may cause permanent damage to the module.; Please check the power supply stability, the voltage should not fluctuate greatly and frequently; pleasemake sureAnti-static operation during installation and use, electrostatic sensitivity of
high-frequency components; Please ensure that the humidity is not too high during installation and use, as some components are
humidity sensitive.; If there is no special requirement, it is not recommended to use it at too high or too low temperatures.

4.3 The bit error rate is too high

There is interference from the same frequency signal nearby.Stay away from interference sources or change the frequency or channel to avoid interference.interference;
An unsatisfactory power supply may also cause garbled characters, so the reliability of the power supply must be ensured;
Poor quality or excessive length of extension cables or feeders can also cause high bit error rates.

Revision History

Version 1.0

Revision Date 2025-7-10

Revision Notes Initial version

Maintainer Hao

About Us
Technical support: support@cdebyte.com Documents and RF Setting download link: https://www.es-ebyte.com Thank you for using Ebyte products! Please contact us with any questions or suggestions: info@cdebyte.com ———————————————————————————————————–Web: https://www.es-ebyte.com Address: B5 Mould Industrial Park, 199# Xiqu Ave, High tech Zone, Chengdu, Sichuan, China
Copyright ©20122025, Chengdu Ebyte Electronic Technology Co., Ltd.
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Documents / Resources

EBYTE E22P-xxxXBX-SC Series Wireless Module Kit [pdf] User Manual
E22P-xxxXBX-SC Series, E22P-xxxXBX-SC Series Wireless Module Kit, Wireless Module Kit, Module Kit

References

User Manual

EBYTE E22P-xxxXBX-SC Series Wireless Module Kit User Manual

E22P-xxxXBX-SC Series Wireless Module Kit

Specifications

Product Overview

Pin Definition

Function Introduction

Product Usage Instructions

Chapter 1: Product Overview

Chapter 2: Software Introduction

Chapter 3: Function Demonstration

Frequently Asked Questions (FAQ)

Q: Can different types of Sub-1G Wireless modules be used with
this kit?

Q: What is the MCU used in this evaluation kit?

Documents / Resources

References

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