BlePeriph.ReadCharacteristic
This command retrieves the current value of a
characteristic. A characteristic will be initialized to
00 00 ... 00 when calling
BlePeriph.Enable and will be modified by either the BRP
host (
BlePeriph.WriteCharacteristic ) or the BLE Central (via
a write to the characteristic).
A characteristic can only be read when BLE is
enabled.
Parameters (request frame)
|
Name
|
Type/Size
|
Description
|
|
CharacteristicNdx
|
Integer (8 bits)
|
The index of the characteristic to be read in the
Characteristics array passed to
BlePeriph.DefineService, starting with 0
|
|
ReadLength
|
Integer (16 bits)
|
Number of bytes to read from characteristic
This value may exceed the actual characteristic
size, but only the available data is returned
in the response.
|
Returned values (response frame)
|
Name
|
Type/Size
|
Description
|
|
Length of ReadValue
|
Integer (16 bits)
|
Length of ReadValue in bytes
|
|
ReadValue
|
Raw data
|
-
|
