Laird BL620-US Quick Start Manual - Uart
BL620-US Dongle
Quick Start Guide
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/wireless
4
Americas: +1-800-492-2320
Europe: +44-1628-858-940
Hong Kong: +852 2923 0610
UART
B
REAK
N
OT
A
VAILABLE
(BL620-US
ONLY
)
If you are familiar with using Laird’s BL600 module then you may be familiar with sending a uart_break to force the
module to reset.
Unfortunately, the Segger interface chip which is providing the virtual serial port emulation is not capable of
asserting a BREAK to the module. The only way to reset the device is to send an ATZ command if you are in
command mode OR to invoke the reset() function from a
smart
BASIC application.
If you are using the
cmd
sample app to interact with peripherals and if it is running, an additional way to achieve a
reset is to send the
stop
command. This aborts the application and the BL620 is placed in command mode. You can
then submit the ATZ command to reset it.
F
URTHER
I
NFORMATION
Further information relating to firmware and the use of UWTerminal is available from the Laird website at
http://www.lairdtech.com/Products/Embedded-Wireless-Solutions/Bluetooth-Radio-Modules/BL600-Series
R
EVISION
H
ISTORY
Revision
Date
Description
Approved By
1.0
12 Sept. 2014 Initial Release
Jonathan Kaye
1.1
20 Sept. 2014 Minor Edits
Jonathan Kaye
1.2
14 Oct. 2014
Minor edits
Jonathan Kaye
Figure 2: Using BL620-US in OS X