 2015 Microchip Technology Inc.

DS50002377A-page 15

DUAL MODE MODULE

USER’S GUIDE

Chapter 2. Command Reference

2.1

INTRODUCTION

RN4677 supports a variety of commands for controlling and configuration. This section

describes these commands in detail and provides examples.

2.2

COMMAND SYNTAX

The ASCII command syntax is a keyword followed by optional parameters.

• ASCII commands are divided into multiple groups:

- Set Commands

- Get Commands

- Action Commands

• All commands are one, two or three case-insensitive characters

• Delimit command and any argument with a comma

• Text data is case sensitive such as Bluetooth name

• All commands end with carriage return ('\r', \x0d)

• Get commands return the value to retrieve. Most of the other commands return

either AOK as a positive response or ERR as a negative response.

2.3

SET COMMANDS

Set commands change RN4677 configurations and take effect after rebooting via R,1

command, hard Reset or power cycle.

2.3.1

SA,<1-4>

The Set Authentication command sets the authentication method when a remote

device attempts to connect, where <value> is one of the values shown in Table 2-1.

Once a remote device exchanges pin codes with the RN4677 device, a link key is

stored for future use. The device automatically and permanently stores up to four peer

devices in flash memory using the First-In, First-Out (FIFO) method.

TABLE 2-1:

SET AUTHENTICATION VALUES

Value

Description

1

Secure Simple Pairing (SSP) Pin Code Confirm mode

If this option is set when authenticating the link, a 6-digit pin is sent to UART. On the

remote side, the same 6-digit pin is shown and asked to be confirmed. For BLE, if

the command

confirmed on the remote side; otherwise, a random 6-digit pin code is generated for

confirmation.

2

(Default) SSP “Just Works” mode

This mode works without any request to display or input any security pin.