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Acknowledging Indication on ESP32 / Arduino BLE Communication
I have an ESP32S3 communicating to a proprietary device via BLE. I can connect to two of the services and underlying characteristics on the device and get notifications just fine. However one of the ...
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256
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How Read characteristic value using Android BLE (omron) in Android
Anyone help me. bluetooth connection success and onCharacteristicRead
received values but it's convert time not coming correct values. here
what issue ? conversion anything having issue?
...
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2
answers
95
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The pros and cons to use proper and improper characteristics for a MySQL function?
I created test() function with the proper characteristic DETERMINISTIC as shown below because it always produces the same result 3 according to the doc:
CREATE FUNCTION test() RETURNS INT
...
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72
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Unexpected Behavior When Modifying PE Section Characteristics on Windows 11
I am currently working on a technical book and exploring the characteristics of sections within a Windows Portable Executable (PE) file. Specifically, I have been experimenting with a Python script to ...
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1
answer
407
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Correct data for 0x29AD BLE Weight Measurement? Currently seeing no value
Working with Arduino ESP32.
I managed to implement Environment temp + humidity using the specified BLE spec service and characteristic UUID's. I got lucky as I could see that the values were ...
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1
answer
584
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Bluetooth GATT: Set value and flag field correct
i have some problems by understanding the flag field in Bluetooth characteristics.
For example the heart rate measurement characteristic:
And its flags:
According to my understanding, the first part ...
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1
answer
900
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Write value as (command) to a BLE characteristic via Javascript
I am working on a Project, and I am new to BLE, I have got problem with writing value to BLE characteristic (run command on BLE device).
The characteristic take these values:
0x04 0x01 – Lock mode is ...
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37
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How to figure out for which original call onCharacteristicChanged was triggered?
I have device that accepts commands in write characteristic and returns back data in notification characteristic. Problem is when I call 2 different commands (call 2 writes) and notifications returned ...
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2k
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Flutter Blue characteristic length is limited
I am developing an app in flutter using flutter blue plugin where i am getting the data from a customized bluetooth low energy controller all the neccessary data is in characteristic of the property ...
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1
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2k
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Writing Characteristics on Bluetooth Device
For those who have already worked on Bluetooth Low Energy on Flutter:
I am developing a mobile application. Simply, every time the user clicks on the "Read Data" button, I want to ...
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0
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661
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How to enable notifications on exactly 2 characteristics in Android?
I want to be able to receive notifications on exactly 2 characteristics. Said characteristics are RX and TX from the perspective of the BLE device I am communicating with. I have succeeded in doing it ...
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1
answer
2k
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SAP Char.Value Description not in CAWNT
I'm running into a bit of a problem when trying to lookup/create a report showing characteristic value descriptions.
My issue is that some of our characteristics are created with Datatype = NUM (via ...
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0
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902
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flutter_blue some characteristic properties are not working correctly
i am using any app that include flutter_blue package . I want to read , write and notify to some characteristics.
I'm having trouble writing to a characteristic. When i use another package or another ...
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1
answer
662
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Conversion of heart rate measurements and characteristics notifications
I'm working on a Bluetooth Low Energy medical device and I used the bleak library to connect to the device and read or set data on it.
So far I've been able to connect to it and read data from ...
1
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1
answer
81
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central unsubscribes from characteristic when restart app
IOS app is a peripheral. After pairing, peripheral can successfully update characteristic value to and indicate to subscribed central via updateValue:forCharacteristic:onSubscribedCentrals:
When I ...