User Tools

Site Tools

elec:notes:at05_bt_uart

Table of Contents

Configure an AT-05 Bluetooth - Serial Adapter

Overview

This module is a little bit cheaper than the other common ones, so I ordered two to evaluate them. Turns out the configuration is not that easy…

AT-05 Bluetooth module Footprint Schematic

Steps

  • You need an Android device, and to download the Blue_SPP chinese app. I wouldn't recommend using your phone or anything having access to personnal information, the required permissions are quite… large.
  • Connect to the BLUE_SPP bluetooth device, using 1234 as PIN and 115200 as baudrate.
  • Enter the command mode: #AT#SET=***# where *** is a multiple of 5 sec. 1 ⇒ 5s, 2 ⇒ 10s, …, 9 ⇒ 45s (9 is the maximum value). I guess it's an inactivity timeout. Every successful command should be answered by “OK”.
  • Get the current parameters: #AT#GET#
  • Set the name of the device: #AT#NAME=newName#
  • Set the PIN code: #AT#PIN=xxxx#
  • Change the MAC address: #AT#MAC=xxxxxxxxxx#
  • Change the baudrate: #AT#UART=B,S# where:
    • B is the baudrate setting, between 0 and 8:
      • 0 ⇒ 2400
      • 1 ⇒ 4800
      • 2 ⇒ 9600
      • 3 ⇒ 19200
      • 4 ⇒ 38400
      • 5 ⇒ 57600
      • 6 ⇒ 115200
      • 7 ⇒ 128000
      • 8 ⇒ 256000
    • S represents the parity
      • 0 ⇒ No check
      • 1 ⇒ Odd
      • 2 ⇒ Even
  • Check the new settings: #AT#GET#
  • Exit the command mode: #AT#SET=0#
  • Power-cycle the BT module to apply the new settings
Permalink elec/notes/at05_bt_uart.txt · Last modified: 2014/11/29 09:51 by Hyde179

oeffentlich