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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”

Kĩ năng: Android, Bluetooth ít năng lượng (BLE)

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( 34 nhận xét ) New York, Mexico

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