B4i BLE library is now available. This library allows you to connect and read data from BLE peripheral devices.
Using this library is quite simple. There are three main steps:
1. Search for devices (assuming that the state is STATE_POWERED_ON).
2. Connect to a device.
3. Read data from the device.
There are several events which you need to handle:
StateChanged (State As Int) - This event is raised when you initialize BleManager and when the BLE adapter state changes. Only if the state is STATE_POWERED_ON then you can use this feature.
DeviceFound (Name As String, Id As String, AdvertisingData As Map, RSSI As Double) - Raised when a new device is discovered (after you call BleManager.Scan). The event parameters include the device Id, name, RSSI value and a Map with additional advertised data.
Connected (Services As List) - Raised when a device is connected. The Services list holds the device service ids. The data on the device is stored in a tree like structure made of services that hold characteristics.
DataAvailable (Service As String, Characteristics As Map) - Raised after you call Manager.ReadData. Service is the service that was read and Characteristics is a Map that holds the characteristics ids and values. The values are arrays of bytes.
Disconnected - Raised after a failed connection or after a device has disconnected.
Make sure to see the video in HD mode (click on the small gear button).
iBLE is now included as a preinstalled library.
Example was updated with a new requirement:
You should change the description as needed.
B4XPages example: https://www.b4x.com/android/forum/threads/b4x-ble-2-bluetooth-low-energy.59937/
Using this library is quite simple. There are three main steps:
1. Search for devices (assuming that the state is STATE_POWERED_ON).
2. Connect to a device.
3. Read data from the device.
There are several events which you need to handle:
StateChanged (State As Int) - This event is raised when you initialize BleManager and when the BLE adapter state changes. Only if the state is STATE_POWERED_ON then you can use this feature.
DeviceFound (Name As String, Id As String, AdvertisingData As Map, RSSI As Double) - Raised when a new device is discovered (after you call BleManager.Scan). The event parameters include the device Id, name, RSSI value and a Map with additional advertised data.
Connected (Services As List) - Raised when a device is connected. The Services list holds the device service ids. The data on the device is stored in a tree like structure made of services that hold characteristics.
DataAvailable (Service As String, Characteristics As Map) - Raised after you call Manager.ReadData. Service is the service that was read and Characteristics is a Map that holds the characteristics ids and values. The values are arrays of bytes.
Disconnected - Raised after a failed connection or after a device has disconnected.
Make sure to see the video in HD mode (click on the small gear button).
iBLE is now included as a preinstalled library.
Example was updated with a new requirement:
B4X:
#PlistExtra: <key>NSBluetoothAlwaysUsageDescription</key><string>Bluetooth used to connect to ...</string>B4XPages example: https://www.b4x.com/android/forum/threads/b4x-ble-2-bluetooth-low-energy.59937/
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