Advise on BLE

Im building an android app for a BLE device.

It is suposeed I need to send HEX commands to the device and the device return a result.

Im following this tutorial: [url removed, login to view]

I can connect to device but not capabale to send or receive commands. Im suspicious that the hex is send in text... but not sure.

I need you to help me send a command and receive the result on apk

Because is advisory service, the task is done trought Teamviewer

Device manufacturer provided this information:


Function : Get Time

Send : 0x71 00 00 00 00 00 00 00 00 00 00 00 00 00 00

CRC Parameter : N/A

Return : 0x71 AA 00 00 BB CC DD EE 00 00 00 00 00 00 00 CRC

AA=0x01 : The command completed successfully

AA=0x00 : Command execution failure or CRC check errors

BB CC DD EE is Little-endian format time , The unit is in

seconds , It is a relative time , Benchmark for at 0:00:00 on

January 1, 2000 .

For example : BB CC DD EE as 92 F3 74 1D ,then the time is

0x1d74f392=494203794 seconds , So“0:00:00 on January 1,

2000 ”+ “494203794”= “22:49:54 on August 29th, 2015”

Compétences : Android, Bluetooth à faible consommation (BFC)

Voir plus : write toolbar application android, bluetooth obex application android, prting application android, webex application android, soundboard application android, database application android, application android sip voip, start camera application android, simple database application android, porting iphone application android, timer application android

Concernant l'employeur :
( 34 commentaires ) New York, Mexico

N° du projet : #14061439

Décerné à :


hi..we would like to work with you..we have a 5 year experience in android-ios and web application development.. we would like to give quality of work and client satisfaction is our motto. i read your concern well. Plus

50 $ USD en 1 jour
(14 Commentaires)

5 freelance ont fait une offre moyenne de 130 $ pour ce travail

147 $ USD en 1 jour
(4 Commentaires)

Hi How are you? I am leading a team which consists of MASTER experts from different fields. Our team is new on this website. But we assure you best quality work which will be given to you within your given deadline.Th Plus

100 $ USD en 1 jour
(0 Commentaires)

Hi, I am a serious developer who aims to provide high quality services. If you contact me, we can discuss more things detail and will be achieved with each other's purpose. Good luck for your business…

155 $ USD en 2 jours
(0 Commentaires)

Hello sir, we have recently create one BLE app for send and receive data using BLE adapter i'm send data in any BLE service and service and user sent data using BLE adapter through my app and i'm receive 20 bytes be Plus

200 $ USD en 2 jours
(1 Commentaire)