Ebyte E73-tba User manual

E73-TBA/E73-TBB User Manual

nRF52810/nRF52832 Test Suite

Chengdu Ebyte Electronic Technology Co.,Ltd.                                                                                                                                              E73-TBX User Manual 
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.       

 
Contents 
Development Board Hardware Introduction..................................................................................................................... 2 
1 Brief Introduction ................................................................................................................................................... 2 
2 Principle Description .............................................................................................................................................. 3 
2.1. Chip Introduction........................................................................................................................................ 3 
3 Development Board Circuit Diagram Introduction................................................................................................. 4 
3.1. Power circuit............................................................................................................................................... 4 
3.2. USB to Serial Circuit .................................................................................................................................. 4 
3.3.User button................................................................................................................................................... 5 
3.4. User LED.................................................................................................................................................... 5 
3.5. Extended pin header.................................................................................................................................... 6 
4. Development Board Interface Description............................................................................................................. 6 
4.1. External antenna connection....................................................................................................................... 6 
4.2. Power Supply and Serial Port ..................................................................................................................... 7 
4.3. Program Download Interface...................................................................................................................... 7 
4.4. Pin Definition.............................................................................................................................................. 8 
5. Development Board Open-Box Testing................................................................................................................. 8 
5.1. Packing List ................................................................................................................................................ 8 
5.2. Open-Box Testing....................................................................................................................................... 8 
Development tool introduction ....................................................................................................................................... 14 
1. Description of program burning........................................................................................................................... 14 
2. Instructions for NRFGO STUDIO....................................................................................................................... 15 
1) ERASE ALL................................................................................................................................................... 17 
2) Program SoftDevice ....................................................................................................................................... 17 
3) Program Application....................................................................................................................................... 18 
3. Introduction to debugging simulation burning tool.............................................................................................. 19 
Basic knowledge of Bluetooth 4.X BLE......................................................................................................................... 20 
1. What is BLE ........................................................................................................................................................ 20 
2. The difference between traditional Bluetooth and low-power Bluetooth ............................................................ 20 
3. The working status of the device and the type of Bluetooth device..................................................................... 21 
4. Analysis of Bluetooth Broadcasting .................................................................................................................... 21 
4.1. Preface ...................................................................................................................................................... 21 
4.2. BLE Broadcast Data Structure.................................................................................................................. 21 
4.3. Packet capture analysis ............................................................................................................................. 22 
The Program Structure of Bluetooth in SDK.................................................................................................................. 24 
Peripheral TIMER .......................................................................................................................................................... 25 
1. Structure of TIMER............................................................................................................................................. 26 
2. Introduction of each register ................................................................................................................................ 28 
3. Design of the program ......................................................................................................................................... 30 
Revision History................................................................................................................................................................. 30 
About us.............................................................................................................................................................................. 30 
 

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1. Development Board Hardware Introduction

1.1 Brief Introduction

With the continued popularity of smart wear and IOT Internet of Things, more and more companies and individuals

have begun to develop wearable products and IoT products. In order to facilitate the development of multi-protocol SoC

based on nRF52832/nRF52810 series for R&D personnel, founders and students, EBYTE developed nRF52832/nRF52810

test board, which has below features:

⚫NRF52832/nRF52810 chip with low power consumption, high performance and multi-protocol on board.

⚫Support MESH networking

⚫Support BLE 5.0

⚫Integrated high performance USB to serial chip

⚫Two user buttons

⚫Two user LEDs

⚫An NFC Antenna Interface

⚫Compact size: 28*52.5MM, easy to carry

⚫IPEX interface, external antenna

⚫Reserved SWD interface for external JLINK debugger

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1.2 Principle Description

Block diagram of E73-TBX principle

1.2.1. Chip Introduction

NRF52832 chip is a new multifunctional SoC chip with 32-bit CORTEX-M4 core, which supports Bluetooth BLE,

ANT+, 2.4G private protocols, launched by NORDIC. Compared with the previous generation chip nRF51, the chip has

the characteristics of faster speed, lower power consumption and stronger function. The following are the main features of

nRF52832 chip:

⚫Integrated high performance 2.4G RF transceiver supporting multiple protocols

⚫32/64MHZ external clock

⚫On-chip integration 512KB FLASH, 64 KB RAM

⚫7.7mA TX at +4dBm

⚫Air compatible NRF24L series, NRF24AP series, NRF51 series SoC

⚫20 PPI channels

⚫Settable transmit power: -20dBm-4dBm

⚫Ultra-low standby current: 400nA

⚫Receiving sensitivity - 96 dBm (BLE)

⚫Integrated NFC, support near-field detection and wake-up, support OOB pairing

⚫Integrated BALUN

⚫Integrated PDM, IIS interface

⚫3X4 channel PWM output

⚫12BIT 200KSPS ADC

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1.3 Development Board Circuit Diagram Introduction

1.3.1. Power circuit

After the 5V power comes in from the USB port, it is protected by a self-recovery fuse, and a stable 3.3V voltage is output

through the ME6211.

1.3.2. USB to Serial Circuit

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1.3.3.User button

Reserve 2 user buttons.

1.3.4. User LED

Reserve 2 user LED

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1.3.5. Extended pin header

The remaining GPIO and NFC interfaces are brought out.

1.4. Development Board Interface Description

1.4.1. External antenna connection

The IPEX antenna mount is reserved on the E73-TBX. If users need to use the external antenna, please solder the last

matching capacitor of the module to the position inside the circle, and then plug the external copper tube or rubber antenna

into the IPEX seat. The antenna selection part of the corresponding module manual can be seen in detail.

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Choose: Onboard PCB antenna Choose: IPEX interface

1.4.2. Power Supply and Serial Port

The USB port on the development board provides 5V power for the development board, and it is also the

communication port of the onboard USB to serial port chip CH340G and PC. The development board supports USB port

and JLINK debugger power supply. But please don't both supply power at the same time.

1.4.3. Program Download Interface

The development board has reserved 4-wire SWD interface, support common debugging tools such as JLINK

V8, JLINK V9. It’s not recommend to use JLINK OB, which is bad for NRF52 and unstable.

The position of the debug port is as follows: there is a pin definition on the back of the test board, please check,

pay attention: VCC=3.3V

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1.4.4. Pin Definition

1.5. Development Board Open-Box Testing

1.5.1. Packing List

E73-TBX test board x 1（E73-TBA/E73-TBB called E73-TBX）

MICRO USB cable x 1

1.5.2. Open-Box Testing

When received the packet, please check whether all parts are include. When shipped, the development board burns

bluetooth transparent transmission program already. The below testing method is to ensure whether the board is well or not

via the data transmission function between PC serial port and APP.

1) Install the serial port assistant in the computer and install nRF Toolbox in Phone. Run the nRF Toolbox in phone,

and find the icon of “UART” as below:

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2) After clicking “UART”, there’s 9 buttons. We can set the icons of buttons ourselves. Also We can set the data

contents that APP sends when clicking on these icons. Click “EDIT” to enter the editing of the button icon and the

editing of the sent content.

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3) We set the first button icon to "1"; when the button is pressed, the content sent is set to

"12345678901234567890".

4) We set the second button icon to "2"; when the button is pressed, the content sent is set to

"09876543210987654321"

5) We set the third button icon to "3" and set the send content to "inforlink_nRF52832 E73TBM01".

6) After editing, click “DONE” to exit the setting interface.

7) Connect the development board to the computer with the USB cable. The red LED is flashing, indicating

that a Bluetooth broadcast is being sent.

8) Click on the “CONNECT” link and a Bluetooth device named “Nordic UART” will be found. Click to

establish a connection.

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9) Run the PC serial port assistant software, set the parameters as shown below. In the sending data window,

enter the data "1234567890", click Send, we can see the data sent by PC in the LOGO area of APP.

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10) We click“1” button, “2” button and “3” button on the mobile APP terminal, the PC serial port

will receive the corresponding data.

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2. Development tool introduction

2.1. Description of program burning

1）Different SDK versions only correspond to the specified protocol stack version. Please refer to the RELEASE NOTE

attached to the SDK for the correspondence between the SDK and the protocol stack. See below:

2) Be clear when the protocal stack can be burned.

The nRF5X of NORDIC has a feature that the chip work as SoC to run Bluetooth, or work as a normal MCU.

3) Please do not select readback protection when burning the program during development. Use nRFgo Studio to burn the

program, do not select the readback protection. Otherwise, It will be failed when you burn the program in MDK.

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2.2. Instructions for NRFGO STUDIO

One end of JLINK V9 is plugged into the USB port of the computer, and the other end is connected to the SWD burning

interface of the test board. After double-clicking the nRFgo Studio icon on the start menu or desktop, the following interface

appears:

Please notice the two circles in above picture. If the font in the first small circle shows black, which means JLINK V9

burner is detected by computer, and the driver is installed already. If it’s grey, which means JLINK is failed to connected

to computer, then check below:

4) Whether JLINK V9 is on good condition

5)Whether USB cable is ok

6) The VCC and GND is on the correct connection in case of overcurrent

7) Whether the USB port of PC is loose

8) Whether it indicates abnormal information in the second circle in above picture as below:

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If our computer installed the JLINK aleady, the above issue will occur if we install another version JLINK. The solution

is to update the registry manually.

Press the WIN + R key, enter regedit in the pop-up dialog box, and return. The following interface will appear:

Find the HKEY_CURRENT_USER/Software/J-Link/V630b, then to revise InstallPath.

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If the 64-bit system does not recognize the NRF52810 chip, it can be solved by direct installation.

Here are the steps for using nRFgo Studio to Burn Programs:

1) ERASE ALL

Erase the chip before burning it. After it succeeds, the bottom of the Logo prompt will prompt Erase complete.

2) Program SoftDevice

Click Browser, find the path to the HEX file you want to burn, double-click it, and then click Program.

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3) Program Application

It’s same to program SoftDevice

We finished all the introduction on how to use NRFgo Studio to burn the protocol stack and application. Here’s

another point need to be noticed that the protocol stack and application burning are in sequential order. Users can

burn the HEX to the development board to be familiar with it:

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2.3. Introduction to debugging simulation burning tool

We’d advise users to choose JLINK V9 because it has better speed stability. And we need to configure some settings as

below:

Select Option for Target xxxx under Project.

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