Ebyte E104-BT02-TB User manual

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E104-BT02-TB User Manual
1. Introduction
1.1 Feature introduction
E104-BT02-TB test board adapts USB interface, which can quickly sets the Bluetooth related features and
functions
1.2 Electrical parameters
No.
Parameter
name
Parameter value
Comment
1
Support
module
E104-BT02
Low-power consumption Bluetooth to serial port module
2
Module size
74.4 * 24.4 mm
With USB connector
3
Production
process
Lead-free
process,SMT
Batch consistency and reliability are ensured via SMT
4
Power
supply
interface
USB
-
5
Communica
tion
Interface
USB
-
6
Operating
temperature
-40 ~ +85℃
Industrial grade
7
Operating
humidity
10% ~ 90%
Relative humidity, non-condensing
8
Storage
temperature
-40 ~ +125℃
Industrial grade

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2. Function description
2.1 Pin definition
Pin
No.
Pin name
Pin
directio
n
Use
1
APP_LED
-
APP indicator, indicating the current serial port data output, indicator on
indicates that data is being sent.
2
STA_LED
-
STA indicator, indicating the current Bluetooth connection status, the
indicator is steady on, indicating that the Bluetooth connection is
successful, the indicator is off, indicating that the Bluetooth connection is
disconnected.
3
PWR_LED
-
power light
4
J-RXD
Input
Short jumper cap, Bluetooth module RX(receiving pin) and test board

3
serial chip send pin connection
5
J-TXD
Output
Short jumper cap, Bluetooth module TX(send pin) is connected to the
receiving pin of the serial chip of the test board.
6
WKP
Input
The module wakes up in low-power mode and shortens the GND pin wake
up module. Short the 3V3 pin and enter low power mode.
7
MOD
Input
Working mode configuration, short-connect the GND pin, enter the
configuration mode; Short the 3V3 pin and enter transparent transmission
mode.
8
APP
Output
Bluetooth data output pin, in the short-connection state, the indicator APP
indicates the current serial port data output, the indicator light indicates that
the data is being sent.
9
STA
Output
Bluetooth status output pin, in the short-circuit state, the indicator STA
indicates the current Bluetooth connection status, the indicator is steady on,
the Bluetooth connection is successful, the indicator is off, the Bluetooth
connection is disconnected.
10
RST
Input
Module reset pin, input high level reset.
11
CUR
-
Current detection, used to test the current characteristics of the module in
low power mode.
12
ROLE
Input
Bluetooth role configuration, short-connect the GND pin, enter the
Bluetooth host mode; Short-connect the 3V3 pin and enter Bluetooth slave
mode.
2.2 Functional testing
Test function
Description
Test
Bluetooth
slave current
in low power
mode
Disconnect all jumper caps, ammeter directly into the CUR, the test board is inserted into the
computer USB interface, the power light is on, the module is powered on normally. The
default module works in slave sleep mode and broadcasts at 1-second intervals. The
low-power current of the module can be read by ammeter.
Test for
transparent
transmission
Prepare two test baseboards, one working in host mode and the other working in slave mode,
and establish a Bluetooth master-slave connection to realize transparent data transmission.
1) The host works in the wake up transparent transmission mode, and connects the jumper cap
CUR/STA/APP/J-TXD/J-RXD respectively, WKP connects to the GND pin, MOD connects
to the 3V3 pin, and ROLE connects to the GND pin.
2) The slave works in the wake through transmission mode, and shorts the jumper cap
CUR/STA/APP/J-TXD/J-RXD respectively, WKP is connected to the GND pin, MOD is
connected to the 3V3 pin, and ROLE is connected to the VCC pin.
3) The master and slave modules are plugged into the USB port of the computer, the power
indicator is steady on, and the module is powered on normally. The module automatically

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starts to broadcast data from the machine, and the host module synchronously starts to scan
until the slave is connected successfully, and the STA indicator light corresponding to the
master and slave modules is steady on, indicating that the Bluetooth connection is successful.
4) Open the serial port debugging assistant, open the corresponding COM port of the host
module, send ASCII data "12345678980", the data indicator "APP" of the slave module is
blinking, and output "1234567890" of the corresponding COM port of the slave module.
Parameter
modification
1) The module works in the wake up configuration mode, and connects the jumper cap
CUR/STA/APP/J-TXD/J-RXD respectively. WKP connects to the GND pin, MOD connects
to the GND pin, and ROLE is arbitrary (Bluetooth role).
2) Insert the test board into the computer USB, use the serial port debugging tool to open the
corresponding COM port (factory baud rate is 19200bps, no check, 1 stop bit).
3) Send configuration instructions to complete function configuration (for specific
instructions, please refer to E104-BT02 data manual).
2.3 CH340 Driver installation
The USB to TTL chip used in this test board is CH340. If it is used for the first time, the PC will prompt you
to install the new device driver. You can download the driver software provided by our company or search and
download it on the Internet.
About us
Technical support: [email protected]
Documents and RF Setting download link:：https://www.cdebyte.com
Thank you for using Ebyte products! Please contact us with any questions or
suggestions: [email protected]
Official hotline:[phone]
Web: https://www.cdebyte.com
Address: B5 Mould Park, 199# Xiqu Ave, High-tech District, Sichuan, China

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