BTSTACK_SET_DISCOVERABLE is not publically defined (ie 'include/btstack') so is not usable by the client.

does not work

bt_send_cmd(&btstack_set_discoverable, BTSTACK_SET_DISCOVERABLE);

works

bt_send_cmd(&btstack_set_discoverable, 7);

Cheers, Simon.

BTSTACK_SET_DISCOVERABLE is the internal opcode used by the btstack_set_discoverable cmd. its not needed used by client apps.

btstack_set_discoverable accepts a boolean - anything different from 0 is ON. Most comments are documented in hci_cmds.c - true, that's the wrong place. I shall move the documentation to the public include files.