Ebyte E104-BT5040U Manuale utente

E104-BT5040U User manual

nRF52840 USB-Type Bluetooth Module

Chengdu Ebyte Electronic Technology Co., Ltd. E104-BT5040U Datasheet

Contents

Contents.................................................................................................................................................................................. 1

1.1 Introduction...............................................................................................................................................................1

1.2 Features.....................................................................................................................................................................2

1.3 Applications.............................................................................................................................................................. 2

2. Parameters...........................................................................................................................................................................3

2.1 Limit Parameters.......................................................................................................................................................3

2.2 Working Parameters..................................................................................................................................................3

3. Dimensions and Pin Definition...........................................................................................................................................5

4. Development.......................................................................................................................................................................7

4.1 Development Tool.....................................................................................................................................................7

4.2Factory Default Firmware..........................................................................................................................................7

4.3The Modified Codes.................................................................................................................................................. 8

4.3.Public Key(dfu_public_key.c).................................................................................................................................. 8

4.3.2 Disable Hash value check function........................................................................................................................8

4.4 DFU Guide................................................................................................................................................................9

5. Hardware Notice...............................................................................................................................................................11

5.1 Hardware Notice..................................................................................................................................................... 11

6. FAQ...................................................................................................................................................................................12

6.1 Communication range is too short.......................................................................................................................... 12

6.2 Module is easy to damage.......................................................................................................................................12

6.3 Error Rate is High................................................................................................................................................... 12

7. Welding Guide.................................................................................................................................................................. 13

7.1 Reflow Temperature................................................................................................................................................13

7.2 Reflow Curve..........................................................................................................................................................13

8. Revision history................................................................................................................................................................14

9. About Us........................................................................................................................................................................... 14

1. Introduction...........................................................................................................................................................................

Chengdu Ebyte Electronic Technology Co., Ltd. E104-BT5040U Datasheet

1.1 Introduction

E104-BT5040U is a small Bluetooth wireless module with USB interface

designed and produced by Ebyte; the function and pin of the module

correspond to the official Nordic nRF52840 USB Dongle module (the relevant

schematic diagram can be downloaded on the official website of Nordic). It

comes with a high-performance PCB antenna and uses the Bluetooth Low

Energy (BLE) SOC solution.

E104-BT5040U uses Nordic imported genuine nRF52840 RF chip which

supports Bluetooth 4.2 and Bluetooth 5.0; the chip comes with

high-performance ARM CORTEX-M4 core, 32M+32.768kHz industrial-grade

crystal oscillator, and has UART, I2C, SPI, ADC, DMA Rich peripheral resources such as, PWM, etc.; nRF52840 leads to most of the

I/O ports (please check the pin definitions for details), which is convenient for users to carry out multi-directional development.

E104-BT5040U is a hardware platform with factory program. See below for specific usage.

1.2 Features

Under ideal conditions, the communication distance can reach 250m;

The maximum transmit power is 6mW, and the software is multi-level adjustable;

Support the global license-free ISM 2.4GHz frequency band;

Equipped with 32.768kHz clock crystal oscillator;

Built-in high-performance low-power ARM@Cortex-M4 processor;

Sufficient memory: 1024kB Flash, 256kB RAM;

USB power supply, USB has ESD protection;

Industrial-grade standard design, supporting long-term use at -40℃~85℃;

PCB antenna without external antenna.

1.3 Applications

Smart home and industrial sensors, etc.;

Security system, positioning system;

Wireless remote control, UAV;

Wireless game remote control;

Healthcare products;

Wireless voice

Automotive industry applications.

Chengdu Ebyte Electronic Technology Co., Ltd. E104-BT5040U Datasheet

2. Parameters

2.1 Limit Parameters

The main parameters

Value

Notice

Min

Max

USB power supply voltage (V)

5.5

Over 5.5V will permanently burn the module

VBUS power supply hole (V)

5.5

Over 5.5V will permanently burn the module

VDD power supply hole power

supply (V)

3.6

Over 3.6V will permanently burn the module

Blocking power (dBm)

It is less likely to burn when used at close range

Working temperature (℃)

-40

+85

Industrial grade

2.2 Working Parameters

Description

Value

Notes

Min

Typical

Max

Working voltage (V)

4.35

5.5

USB/VBUS power supply

Communication level (V)

3.3

3.6

Using 5V level is risky to burn

Working temperature (℃)

-40

+85

Industrial design

Working frequency (MHz)

2360

2402

2500

Support ISM frequency band

TX only run current (DCDC, 3V) PRF =+8 dBm（mA）

17.05

TX only run current (DCDC, 3V) PRF =+4 dBm（mA）

12.68

TX only run current (DCDC, 5V, REG0 out = 3.3 V)PRF

= 0dBm（mA）

7.25

TX only run current (DCDC, 3V)PRF = 0dBm（mA）

7.63

TX current (3V) 1Mbps BLE measured from VBAT with

PRF=9dBm（mA）

RX only run current (DCDC, 3V) 1Mbps / 1Mbps BLE

（mA）

7.71

RX only run current (DCDC, 3V) 2Mbps / 2Mbps BLE

（mA）

8.27

Max TX Power（dBm）

7.5

8.5

Rx Sensitivity（dBm）

-103dBm@BLE 125kbps

Long range mode

-95dBm@BLE 1Mbps

Chengdu Ebyte Electronic Technology Co., Ltd. E104-BT5040U Datasheet

Description

Value

Notes

Reference distance

250m

Clear weather, open location, antenna height 2.5 meters, air

rate 1Mbps

Crystal frequency

32MHz/32.768kHz

supporting agreement

BLE4.2/5.0

Power supply

USB/1.27mm 孔

Interface method

USB/1.27mm 孔

IC full name

nRF52840-QIAAC0/aQFN TM

FLASH

1024kB

RAM

256kB

Kernel

ARM@ Cortex ® -M4

Dimensions

59*18mm

Housing and ports size counted

Antenna Type

PCB Antenna

Chengdu Ebyte Electronic Technology Co., Ltd. E104-BT5040U Datasheet

3. Dimensions and Pin Definition

Chengdu Ebyte Electronic Technology Co., Ltd. E104-BT5040U Datasheet

Pin No.

Name

Direction

Functions

GND

—

Power Ground

P0.10

J24

See nRF52840 chipset datasheet

P0.09

L24

See nRF52840 chipset datasheet

P1.04

U24

See nRF52840 chipset datasheet

P1.02

W24

See nRF52840 chipset datasheet

P1.00

AD22

See nRF52840 chipset datasheet

P1.07

P23

See nRF52840 chipset datasheet

P1.01

Y23

See nRF52840 chipset datasheet

P0.24

AD20

See nRF52840 chipset datasheet

P0.22

AD18

See nRF52840 chipset datasheet

P0.20

AD16

See nRF52840 chipset datasheet

P0.17

AD12

See nRF52840 chipset datasheet

P0.15

AD10

See nRF52840 chipset datasheet

P0.13

AD8

See nRF52840 chipset datasheet

P0.14

AC9

See nRF52840 chipset datasheet

VBUS

USB5V

This interface cannot be powered at the same time as the USB interface, the maximum is 5.5V

VDD

—

Chip power supply pin, maximum 3.6V, cannot be supplied with USB power supply at the same time

GND

—

Power Ground

P0.04

See nRF52840 chipset datasheet

P0.26

See nRF52840 chipset datasheet

P0.11

B19

See nRF52840 chipset datasheet

P0.31

See nRF52840 chipset datasheet

P0.29

A10

See nRF52840 chipset datasheet

P0.02

A12

See nRF52840 chipset datasheet

P1.15

A14

See nRF52840 chipset datasheet

P1.13

A16

See nRF52840 chipset datasheet

P1.11

B19

See nRF52840 chipset datasheet

P1.10

A20

See nRF52840 chipset datasheet

GND

—

Power Ground

GND

—

Power Ground

VDD

Download interface, try to avoid USB and VDD supplying power at the same time

RESET

SWDIO

SWCLK

GND

RST

RESET

Reset button.

P1.06

function button

LED1

RGB LED

R (red): P0.08; G (green): P1.09; B (blue): P0.12;

LED

P0.06

GND

USB Test Port

D+

D-

Chengdu Ebyte Electronic Technology Co., Ltd. E104-BT5040U Datasheet

VBUS

USB Test Port

4. Development

4.1 Development Tool

No.

Item

Notes

Burn

Firmware

1.The module is embedded with ARM MCU. For program downloading, please use the J-LINK

downloader. Any other serial port or JTAG、ISP、ICP are unavailable to download.

The burn firmware needs to be completed in two parts. Since the protocol stack provided by NORDIC

is not loaded in the program, in the second development, you need to use the official burning tool

nRFgo studio to burn the protocol stack, and then use nRFgo studio to burn. The hex of the application

code; you can also use the official burning tool nRFgo studio to burn the protocol stack, and then

download it with IAR or KEIL.

Testing

Board

Testing board is not available.

4.2Factory Default Firmware

The factory firmware of E104-BT5040U is only DFU firmware (device firmware upgrade).

Main features of DFU:

Update application, SoftDevice and bootloader

Certification update

Downgrade prevention

Hardware compatibility verification

Multiple transmission methods: (BLE, UART, USBD)

Support application with or without SoftDevice

Support the replacement of SoftDevice-dependent firmware with SoftDevice-independent firmware

Support the replacement of SoftDevice-independent firmware with SoftDevice-dependent firmware

The factory DFU firmware is compiled with the sample program "nRF5SDK160098a08e2\examples\dfu\open_bootloader" in the

SDK16.0 firmware (nRF5SDK160098a08e2.zip).

Chengdu Ebyte Electronic Technology Co., Ltd. E104-BT5040U Datasheet

4.3The Modified Codes

4.3.Public Key(dfu_public_key.c)

#ifdef NRF_DFU_DEBUG_VERSION

/** @brief Public key used to verify DFU images */

__ALIGN(4)const uint8_t pk[64] =

{

0x1b,0x0c,0xae,0x9f,0x22,0x80,0x60,0xa1,0x85,0xa0,0xba,0x18,0xe7,0xaf,0xfc,0x94,0x63,0xfb,0xd2,0x58,0xac,

0xde,0x1c,0xa0,0x1d,0x2a,0xd2,0x0d,0x25,0x72,0x9f,0x37,

0x57,0x00,0xc4,0xf6,0x0b,0x92,0x21,0x44,0x85,0x70,0x5d,0xbe,0x62,0x0d,0x9e,0x09,0x82,0x02,0xf8,0xec,

0x3b,0xcd,0x06,0xb5,0xc9,0x68,0xc7,0xff,0x2e,0xe7,0x95,0x4a

};

#else

/** @brief Public key used to verify DFU images */

__ALIGN(4)const uint8_t pk[64] =

{

0xc2,0xdf,0x7a,0x7f,0x4a,0x64,0xcd,0x56,0x63,0x77,0x82,0x94,0x49,0x70,0xe8,0x1b,0x8f,0x69,0x31,0xd7,0xcb,

0x71,0x0f,0x2d,0xcc,0x03,0x7d,0x6f,0x26,0x14,0x1d,0x32,

0x55,0xa2,0x2f,0xea,0x7e,0x1d,0xca,0x52,0xa0,0x86,0x9f,0xee,0x16,0x43,0xc8,0x8e,0x3f,0xbc,0xcc,0xa3,0x2b,

0x36,0xe1,0x0e,0xdb,0xeb,0x6f,0x7b,0x3c,0x79,0x67,0x55

};

#endif

4.3.2 Disable Hash value check function

File Routing：“nRF5SDK160098a08e2\components\libraries\bootloader\dfu\nrf_dfu_validation.c”. Disable below codes.

err_code =nrf_crypto_ecdsa_verify(&m_verify_context,

&m_public_key,

m_init_packet_hash,

hash_len,

m_signature,

sizeof(m_signature));

// if (err_code != NRF_SUCCESS)

// {

// NRF_LOG_ERROR("Signature failed (err_code: 0x%x)", err_code);

// NRF_LOG_DEBUG("Signature:");

// NRF_LOG_HEXDUMP_DEBUG(m_signature, sizeof(m_signature));

// NRF_LOG_DEBUG("Hash:");

// NRF_LOG_HEXDUMP_DEBUG(m_init_packet_hash, hash_len);

Chengdu Ebyte Electronic Technology Co., Ltd. E104-BT5040U Datasheet

// NRF_LOG_DEBUG("Public Key:");

// NRF_LOG_HEXDUMP_DEBUG(pk, sizeof(pk));

// NRF_LOG_FLUSH();

// return NRF_DFU_RES_CODE_INVALID_OBJECT;

// }

4.4 DFU Guide

There are many ways to use DFU, such as upgrading through APP, UART upgrading, etc. Here we only introduce how to use

E104-BT5040U and nrf connect.

The version of nrf connect in the document is V3.3.1. Start the nrf connect software, as shown in the figure below:

Take the first item as an example (Bluetooth Low Energy). Select "Open" to display the interface as shown in the figure below, and

select "Launch anyway". Start the Bluetooth Low Energy APP.

Select the virtual serial port corresponding to E104-BT5040U.

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