Microchip Technology ATWINC3400 Manuel utilisateur

ATWINC3400

ATWINC3400 BLE Profiles Application User Guide

Introduction

This document describes how to set the ATWINC3400 evaluation boards for various example applications

supported by the Atmel Studio. This document also provides the list of supported hardware platforms and

IDEs to be used in conjunction with the ATWINC3400 evaluation board (see Table 2-1).

Note: All the example applications are included in the software package.

Figure 1. ATWINC3400 Extension Board

Features

• Proximity Reporter Application:

– Advertisement

– Pairing/bonding

– Provisioning Services – Scan for Wi-Fi® APs, send Wi-Fi provision details/configuration,

trigger Wi-Fi connection

– Proximity Services – Link Loss service (mandatory), Immediate Alert service, and Tx Power

service

• Battery Service Application

– Advertisement

– Pairing/bonding

– Provisioning Services – Scan for Wi-Fi APs, send Wi-Fi provision details/configuration, trigger

Wi-Fi connection

– Battery level

• Custom Serial Chat (CSC) Profile Application:

– Device discovery and disconnection

– Pairing/bonding

– Send and receive messages

– Console display

• Heart Rate Profile Application:

– Advertisement

– Pairing/bonding

– Heart rate sensor measurements

– Console display

• Transparent Service Application:

– Advertisement

– Pairing/bonding

– Send and receive messages

– Console display

• On-chip Provisioning Application:

– Advertisement

– Pairing/bonding

– Provisioning Services – Scan for Wi-Fi APs, send Wi-Fi provision details/configuration, trigger Wi-

Fi connection

ATWINC3400

Table of Contents

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

Features.......................................................................................................................... 1

1. Functional Overview.................................................................................................. 5

1.1. Proximity Reporter Application..................................................................................................... 5

1.2. Battery Service Application.......................................................................................................... 5

1.3. Custom Serial Chat Profile Application........................................................................................ 6

1.4. Heart Rate Profile Application...................................................................................................... 6

1.5. Transparent Service Application...................................................................................................6

1.6. On-chip Provisioning Application..................................................................................................7

2. Supported Hardware Platforms and IDEs................................................................. 8

3. Hardware Setup.........................................................................................................9

3.1. ATWINC3400 Board.....................................................................................................................9

3.2. SAM D21 Xplained Pro Setup...................................................................................................... 9

4. Software Setup........................................................................................................ 11

4.1. Installation Steps........................................................................................................................ 11

4.2. Build Procedure.......................................................................................................................... 11

5. Running Example Applications................................................................................16

5.1. Initializing the Device..................................................................................................................17

5.2. BLE Provisioning Procedure...................................................................................................... 17

5.3. BLE Profile Scan and Connect...................................................................................................19

5.4. Proximity Reporter Application................................................................................................... 21

5.5. Battery Service Application........................................................................................................ 24

5.6. Custom Serial Chat Profile Application...................................................................................... 25

5.7. Heart Rate Profile Application.................................................................................................... 26

5.8. Transparent Service Application.................................................................................................27

5.9. On-chip Provisioning Application................................................................................................30

6. Document Revision History..................................................................................... 33

The Microchip Web Site................................................................................................ 34

Customer Change Notification Service..........................................................................34

Customer Support......................................................................................................... 34

Microchip Devices Code Protection Feature................................................................. 34

Legal Notice...................................................................................................................35

Trademarks................................................................................................................... 35

Quality Management System Certified by DNV.............................................................36

Worldwide Sales and Service........................................................................................37

ATWINC3400

1. Functional Overview

This chapter describes the functional overview of all the applications that are pre-defined in Atmel Studio.

1.1 Proximity Reporter Application

The Proximity profile is defined by the Bluetooth® SIG to enable proximity monitoring between two

Bluetooth Low Energy (BLE) devices. The Proximity Monitor (a Generic Attribute (GATT) client)

configures the behavior of the peer Proximity Reporter device (a GATT server) based on the link

conditions. The configuration includes setting the alert level, which triggers on the Link Loss or based on

a different threshold of the Path Loss. The Path Loss determines the quality of the connection and it is

derived out of the Received Signal Strength Indicator (RSSI). The Proximity Monitor continuously

evaluates the Path Loss and creates an immediate alert in the Proximity Reporter device when the Path

Loss crosses threshold values.

On-Board LED Status

The on-board LED is configured to notify the user about the alerts received. The different alerts for the

Link Loss and Immediate Alert services are explained in the following subsections.

Link Loss

On the Link Loss, the LED blinks according to the alert level set by the Proximity Monitor. The alert levels

are:

• NO_ALERT for No alert level

• MILD_ALERT for Mild alert level

• HIGH_ALERT for High alert level

Based on the alert level configuration set by the Proximity Monitor, the LED blinks at different rates:

• If the alert level is “HIGH_ALERT” then the LED blinks faster (1 second interval)

• If the alert level is “MILD_ALERT” then the LED blinks moderately (2 second interval)

• If the alert level is “NO_ALERT” the LED must be off

Alert on Path Loss (Immediate Alert)

This alert is applicable when the “Immediate Alert” service is implemented. The example application relies

on the Path Loss configuration done by the Proximity Monitor and notifies accordingly. The alert levels

are:

• NO_ALERT for No alert level

• MILD_ALERT for Mild alert level

• HIGH_ALERT for High alert level

Based on the alert level configuration set by the Proximity Monitor, the LED blinks at different rates:

• If the alert level is “HIGH_ALERT” then the LED blinks faster (3 second interval)

• If the alert level is “MILD_ALERT” then the LED blinks moderately (5 second interval)

• If the alert level is “NO_ALERT” the LED must be off

1.2 Battery Service Application

The Battery Service application is used for reporting the battery level of the device using the battery

characteristics. Any application discovering the database can access the battery service instance during

ATWINC3400

Functional Overview

discovery services. This example application simulates the device battery level from 0% to 100%, with the

step of 1% every second.

1.3 Custom Serial Chat Profile Application

The Custom Serial Chat application is used for sending and receiving data between the boards (SAM

D21) and the Microchip SmartConnect mobile application. This is a custom profile example application

implemented over GATT. The user can send the information to the mobile phone using the console

terminal that is configured with the board and vice versa.

1.4 Heart Rate Profile Application

The Heart Rate Profile application is used for enabling the collector device (GATT client) to connect and

interact with a heart rate sensor (GATT server) to be used in the fitness applications. The heart rate

sensor sends the heart rate measurement in bpm (beats per minute), energy expended in kJ (kilojoules),

and R-R intervals in seconds. In addition to the heart rate service, this profile also implements the Device

Information Service, which provides information about the heart rate sensor device.

The heart rate profile provided by Bluetooth SIG defines three characteristics for the exchange of heart

rate parameters between the sensor and monitor. The characteristics of the profile are used to transfer

heart rate parameters like bpm, R-R interval measurements, and other parameters like body sensor

location and energy expended values. The optional “Heart Rate Control Point characteristic” is used by

the heart rate monitor to reset the energy expended in the heart rate sensor.

The heart rate sensor, which is the GATT server, holds the characteristics and sends the measurement

values to the heart rate monitor.

• The heart rate, R-R interval, and energy expended are sent using the heart rate measurement

characteristics.

• The heart rate measurements are sent to the monitor on a value change if the monitor has enabled

the notifications.

• The body sensor location is read by the monitor by its body sensor location characteristic. The

energy expended sent in the heart rate measurement can be reset by the monitor by writing to the

heart rate control point characteristic.

Note: The example application simulates the sensor measurements and sends them to the heart rate

collector.

1.5 Transparent Service Application

The Transparent Service is used as a data exchange method between the client and the server.

• Transparent Tx characteristic is used for data transmission by the server or client. Once the Client

Characteristic Configuration Descriptor of Transparent Tx is enabled, the server sends data to the

client by this channel. The client also can send the data through this channel.

• Transparent Rx characteristic is used for data transmission by the client. The client can send data

to the server by this channel.

• Transparent Control Point characteristic: To ensure successful operation, this Client Characteristic

Configuration Descriptor of Transparent Control Point (TCP) must be enabled to notify. The client

must perform a write to the TCP to execute a desired procedure at the server. The Transparent

Control Point is used by a client to control certain behaviors of the server. The procedures are

ATWINC3400

Functional Overview

triggered by writing a value that includes an Op code specifying the operation and the server

notifies of the result of the operations.

When enable credit-based flow control Op code is written to the TCP, the server responds with the

maximum MTU size and available credit to the client. The number of credits are checked by the client to

know how many data lists can be transmitted to the server. The number of credits are decreased by the

list of data sent by client. The client can only send data while the number of credits is non-zero. The

server returns the credit to the client after the server finishes dealing with the received data.

1.6 On-chip Provisioning Application

The On-chip Provisioning application is used for receiving Wi-Fi provisioning data via Bluetooth and then

triggering a Wi-Fi connection. The majority of the provisioning functionality is performed by the BLE

Cortus of ATWINC3400, with the host application performing some helper functions via dedicated

libraries. This application triggers a Wi-Fi scan and lists the scanned APs on the receiver. On receiving

the Wi-Fi configuration data (which is passed to the host application where it is fed into the BLE Cortus

provisioning API), it validates the data and starts the connection process. On successful connection, the

Bluetooth connection is terminated. If the connection is not successful with received configuration, the

provisioning process restarts and lists the latest scanned APs again.

ATWINC3400

Functional Overview

2. Supported Hardware Platforms and IDEs

The following table provides the supported hardware platforms and IDEs for the ATWINC3400.

Table 2-1. Supported Hardware and IDEs

Platform MCU Supported BLE

Device

Supported Evaluation

Kits

Supported IDEs

SAM D21 ATSAMD21J18A ATWINC3400 ATSAMD21-XPRO Atmel Studio v7.0

ATWINC3400

Supported Hardware Platforms and IDEs

3. Hardware Setup

3.1 ATWINC3400 Board

The following figure illustrates the samples of SAM D21 and ATWINC3400 kit details displayed in Atmel

Studio.

Figure 3-1. SAM D21 Kit Details

Figure 3-2. ATWINC3400 Kit Details

3.2 SAM D21 Xplained Pro Setup

The following figure illustrates the ATWINC3400 Xplained Pro extension board connected to SAM D21

Xplained Pro.

ATWINC3400

Hardware Setup

Figure 3-3. SAM D21 Xplained Pro Board

ATWINC3400

Hardware Setup

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