Hi,
Does Bluez provide a way to detect the compatibility of a Bluetooth
adapter with Bluetooth 4.0/Low Energy?
I have written some command-line tools to interact with BLE devices
and have received a couple of bug reports from users who don't realize
that they don't have Bluetooth 4.0 adapters.
It appears that connect() with a BLE destination address results in
errno=EBADRQC. Is this errno value a reliable way to detect an
incompatible adapter? Is it possible to query the hci device to detect
compatibility without trying and failing?
struct sockaddr_l2 srcaddr, dstaddr;
memset(&dstaddr, 0, sizeof(dstaddr));
dstaddr.l2_family = AF_BLUETOOTH;
dstaddr.l2_cid = htobs(4); // ATT_CID
dstaddr.l2_bdaddr_type = BDADDR_LE_RANDOM;
...
connect(sock, (struct sockaddr *) &dstaddr, sizeof(dstaddr))
Thanks,
Dan
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