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Hi everyone, I'm trying to send a 900KB file to an ESP32 via BLE. Assume that the code... to it over BLE and send the files. Everything works fine. However... i managed to port the same... the React webapp to do the transfer was hundreds time faster... Maybe the phone BLE is slower compared to...
link: -to-change-mtu-in-ble-application-solved.101722/#content ? Thanks Erel for the answer. I didn't...
link: -change-mtu-in-ble-application-solved.101722/#content ?...

.b4a.objects.BleManager2.WriteData (BleManager2.java:395) at anywheresoftware.b4a.objects.BleManager2.WriteData (BleManager2.java:386) at fg.MasterOfRegolarity.clsbluetoothble....WriteData (BleManager2.java:395) at anywheresoftware.b4a.objects.BleManager2.WriteData (BleManager2.java...("GetBluetoothVersion=" & strTmp) If btService > -1 Then btManager.WriteData...
link: https://github.com/AnywhereSoftware/B4A/blob/fa934475f597d2a8ea61296cad3b052fabef78f5/Libs_BLE2/src...

to add a delay between the BLE actions. Trial and error suggests a delay of 150 is sufficient but may be worth increasing to be on the safe side. Using BLE for Serial Communication one has to accept...
link: Thanks for the suggestions. I looked at Debug settings on the phone and confirmed USB debugging was...
link: Event. Inside that event, finally call your manager.WriteData(...). Mr gemini recomendation? ' Step...
link: the "Continue?" popup if it fails Try manager.WriteData("0000fff0-0000-1000-8000...

I am going through the BLE 2 example. In order to send data to the remote BLE device (uBlox NINA), I must send: WriteData(Service As String, Characteristic As String, Data As Byte()) What exactly...
link: It is a serial cable replacement using uBlox NINA...
link: What is the precise model number? Is it a GPS module that communicates over BLE, or just a BLE...
link: You can get Service and Characteristic IDs when you connect to the device and do a ReadData, but I t...

Thanks. The joys of networking... Have averted the crashes in writes by limiting the amount read in the reads (only specific services...
link: writing in the BLE library....
link: the app goes to WriteData some writable characteristics. The write almost always fails unless...

Thank you very much, I will review the code and I hope I can adapt it to my project....
link: I got all of my information from the B4A BLEExample. To write data from b4a you use the WriteData...
link: Hello, to send the bytes from b4a you used only the WriteData method or you used SetNotify, could...
link: That is very clever. Can't wait to share that one. I discovered with the help from the Arduino ...

changed char to charact and Object to JavaObject in WriteData sub : Scans, finds, connects, but, after 8 WriteData btn presses, it stopped sending anything....
link: Try this: Sub WriteData(Service As String, Characteristic As String, Value As String) As Boolean...
link: I found an old post where BleExtEx was updated to correct writes. I don't understand the java...
link: It is strange that it works with BleExtEx and not with BLE2. I'm not familiar with BleExtEx...

Cracked this one as well after getting close to giving up Dim n As String ="ffff" Dim send()As Byte=bc.HexToBytes(n) manager.WriteData(serveuuid,txuuid,send) ...
link: I am using :- manager.WriteData(serveuuid,txuuid,n.GetBytes("utf8")) Where...
link: to write try some way like that WriteData("6e400001-b5a3-f393-e0a9-e50e24dcca9e"...
link: Try the example first BLE 2 - Bluetooth Low Energy%27 https://www.b4x.com/android/forum/threads...

I have used SmartConnect which is on the Microchip web site and nRF Connect both were helpful for d...
link: About the solution for me, if you has a MTU of a size, you can send as much as MTU-3 in a Write....
link: Solved, not Write with response / without response related. Sorry for the noise. Best regards....
link: 0x13 response (something like ack/received) BLE with or without response BLE2.WriteData doesn't...

Try to disable the timer and also add Sleep(1000) before writing....
link: I have tick timer already active. It's possible that it is wrong and it disorders writedata...
link: Where does this line come from: manager.ReadData 0000a002-0000-1000-8000-00805f9b34fb ? Are you re...
link: = 0xbed36838, 0xc2ffe008 ReadTimer_Tick BleState 4 DateTime.Now 1567516722299 LastReadTime 0 manager...