Epson Moverio Pro BT-2000 Developer's Manual page 155

8.8.18. readGatt
Function

Start acquiring Characteristic Values/Characteristic Descriptors for the connected BLE
device.
Use format -2 when handling Characteristic Values/Characteristic Descriptors with a long
data length.
Format -1

int readGatt(char connectedHandle, char handle);
Format -2

int readGatt(char connectedHandle, char handle, char offset);
Parameter

Model name
char connectedHandle
char handle
char offset
Return value

Model
int BluetoothLeChipCode.SUCCESS: success
BluetoothLeChipCode.BaseError.INVALID_ADDR: invalid memory address
BluetoothLeChipCode.BaseError.INVALID_STATE: invalid status
BluetoothLeChipCode.BaseError.BUSY: system busy status
BluetoothLeChipCode.STKError.INVALID_CONN_HANDLE: invalid connection
handle
Usage method

To receive search results, you need to register the callback function in setGattCallback in
advance.
The following callback function sends a notification for search results.
BluetoothLeGattCallback.onReadGattResult
MOVERIO Pro Developer's Guide (Rev.1.4)
Explanation
Connection handle
Handle location for Characteristic Value
Reading location for the value
Explanation
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