ble

Hi everyone, I'm developing an app that uses the BLE, i'm using the last suggested way: this. However... i need to connect to a specific device knowing the MAC Address... I made the App for Android and everything works because when the sub "_DeviceFound" fires it returns something like: where...

Hi everyone, I'm trying to send a 900KB file to an ESP32 via BLE. Assume that the code on the ESP32 is working because i tested it using a React WebApp running in the PC browser, that connects to it over BLE and send the files. Everything works fine. However... i managed to port the same...

Hi. I'm building a custom app to connect my G-Shock via Bluetooth Low Energy. I've extracted some data and for the past couple of days been hitting a wall. I've tried many different solution, to no avail. Is anyone familiar with any of the patterns that the information is stored in g-shocks...

Hi, I am trying to send alert to smart band (Mi Band 5). I am sending this alert message : “pollutant_id:pM10 Max:314” For sms/mms alert, the alert message has to be preceded by 0x05 and 0x01 so if I convert the alert message to Hex, the following code works : However I do not want to convert...

Hi, no success with my Xiaomi Band 6, working well with the app MiFit. The log, I do not know what else I can send to facilitate the analysis: Logger verbunden mit: samsung SM-A725F --------- beginning of crash --------- beginning of main --------- beginning of system *** Service (starter)...

Hello All Well, after a while now thrashing around, I've finally finished one of the projects I've been working on. This is Daddy posting his first creation. . . . . First : acknowledgment to all those who responded to my various postings, queries and wondering tracks, those who supplied...

I slightly reworked the BLE example so that I could receive notifications. After the revision, the notifications work, but the speed is very low. Namely, I manage to receive only 20% of the data from the sensor. Does anyone know any faster way to receive notifications. Otherwise I test on MIUI...

There are two android devices: There is also an FSC-BT616 bluetooth module, which is connected to a PC via a UART-USB converter. Program code: Public SaveDeviceId As String Public SaveServiceId As String Public SaveCharacteristicId As String Public ServiceIdStartsWith As...

Happy to share that we have our first app accepted on the Microsoft Store: SQI Test and Report The whole process was quite simple and straight forward: - build your app in B4J - use B4J integrated packager to produce the app installation Setup - include this installation Setup (exe file) to...

Is there an equivalent to RequestMTU for B4I ?

Is there any fundamental difference in the usage of WriteData between B4A and B4I ? I have an app running in B4A that transfers a few Kb of data between a device and phone. The data is transfered in blocks of 512 bytes. After each block is received the phone increments a counter (a...

SQI Test and Report (Early Access) Uploaded on Google Play as Open Testing. Few words on the app: - Designed specifically for Steam Quality Testing. - B4XPages based. Some pages using Landscape orientation and so they are separate activities. - Collect and manage steam testing results. - input...

How to check if your device is usable to communicate with other devices using the Bluetooth Low Energy protocol? I mean, how to check if my smartphone can communicate with a sensor that is expressly specified to communicate via BLE? And how to check if my smartphone operate via 'central' or...

I bought HLK-B40 (BLE 5.1) and try to connect - no result (but connection is OK with HM-10 - BLE 4.0) is it any difference between 4.0 and 5.1 BLE?

Hi, i'm trying to send a string which has more then 20 chars. For this i use RequestMtu Sub Manager_Connected (services As List) manager.RequestMtu(80) End Sub But nothing happens. This event doesn't output anything either: Sub Manager_MtuChanged (Success As Boolean) Log("MTU: " &...

🙈 Hello, my next problem My pgm B4i and B4a (later also B4j) is working with B4XPages. Where should i define the BLE manager ? (in B4XPages or in Main?) And where to initialize the manager? (in B4XPages or in Main?) How can I manage to access BLEManager from all pages.... Thanks for...

Hello, I have tested the BLE 2 example (link below) for Android with 2 BLE device (RN4678 and Ebyte E104-BT40). Location is enable, but when I try to connect, I receive "disconnect" result just few second after. This with android 7, android 8 and android 10. When I try with the BLE scanner...

I'm missing something.. So, I decided to reach out.. I have a B4A/BLE app that runs like a fine sewing machine on a cheap WalMart LG phone running Android 5.1.1. Try to run the very same app on a Samsung S10 running Android 10 and it refuses to connect via BLE. I've checked all of the usual...

Hi There Is there a reason why BLE Scan2 doesn't find all bluetooth devices listed under System Settings->Bluetooth->Available devices? I am using B4A 10.2, BLE2 (1.38). I also tried using the BLE2 sample code. I am getting the same results. The manager is initialized as follows...

Using the BLE2 library, from the documentation it's not clear to me how to read a characteristic value, knowing its UUID (and of course after a connection is already open). In the Documentation, ReadData2 (Service As String, Characteristic As String) Are the Service and Characteristic...