I have tried the CSR usb dongle today. I used gatttool to connect BlueDuino. Let’s say the Mac address for BlueDuino is 88:33:14:DD:87:6D
Run the gatttool in interactive mode:
sudo gatttool -I
and then connect to the Hexiwear with the address from above:
connect 88:33:14:DD:87:6D
With the ‘primary’ command I list the primary services:
[88:33:14:DD:87:6D][LE]> primary
attr handle: 0x0001, end grp handle: 0x000b uuid: 00001800-0000-1000-8000-00805f9b34fb
attr handle: 0x000c, end grp handle: 0x000f uuid: 00001801-0000-1000-8000-00805f9b34fb
attr handle: 0x0010, end grp handle: 0x0022 uuid: 0000180a-0000-1000-8000-00805f9b34fb
attr handle: 0x0023, end grp handle: 0xffff uuid: 0000fff0-0000-1000-8000-00805f9b34fb
The service 0xfff0 is the serial service. characteristic discovery command:
[88:33:14:DD:87:6D][LE]> char-desc 0x0023 0xffff
handle: 0x0023, uuid: 00002800-0000-1000-8000-00805f9b34fb
handle: 0x0024, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x0025, uuid: 0000fff1-0000-1000-8000-00805f9b34fb
handle: 0x0026, uuid: 00002902-0000-1000-8000-00805f9b34fb
handle: 0x0027, uuid: 00002901-0000-1000-8000-00805f9b34fb
handle: 0x0028, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x0029, uuid: 0000fff2-0000-1000-8000-00805f9b34fb
handle: 0x002a, uuid: 00002901-0000-1000-8000-00805f9b34fb
the 16bit uuid 0xfff2 is the serial write characteristic. I can write ASCII string to it
[88:33:14:DD:87:6D][LE]> char-write-req 0x0029 313233
Characteristic value was written successfully
I got 123 at my serial monitor of BlueDuino