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scan: Discover CCC using gatt_discover_desc

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This commit is contained in:
Andrzej Kaczmarek 2014-05-02 12:57:36 +02:00 committed by Johan Hedberg
parent 5b1d5ae2b6
commit 7e38e7dc94
1 changed files with 13 additions and 21 deletions
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34
profiles/scanparam/scan.c
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@ -102,35 +102,24 @@ static void ccc_written_cb(guint8 status, const guint8 *pdu,
refresh_value_cb, scan, NULL);
}
static void discover_descriptor_cb(guint8 status, const guint8 *pdu,
guint16 len, gpointer user_data)
static void discover_descriptor_cb(uint8_t status, GSList *descs,
void *user_data)
{
struct scan *scan = user_data;
struct att_data_list *list;
uint8_t *ptr;
uint16_t uuid16, handle;
struct gatt_desc *desc;
uint8_t value[2];
uint8_t format;
list = dec_find_info_resp(pdu, len, &format);
if (list == NULL)
if (status != 0) {
error("Discover descriptors failed: %s", att_ecode2str(status));
return;
}
if (format != ATT_FIND_INFO_RESP_FMT_16BIT)
goto done;
ptr = list->data[0];
handle = get_le16(ptr);
uuid16 = get_le16(&ptr[2]);
if (uuid16 != GATT_CLIENT_CHARAC_CFG_UUID)
goto done;
/* There will be only one descriptor on list and it will be CCC */
desc = descs->data;
put_le16(GATT_CLIENT_CHARAC_CFG_NOTIF_BIT, value);
gatt_write_char(scan->attrib, handle, value, sizeof(value),
gatt_write_char(scan->attrib, desc->handle, value, sizeof(value),
ccc_written_cb, user_data);
done:
att_data_list_free(list);
}
static void refresh_discovered_cb(uint8_t status, GSList *chars,
@ -139,6 +128,7 @@ static void refresh_discovered_cb(uint8_t status, GSList *chars,
struct scan *scan = user_data;
struct gatt_char *chr;
uint16_t start, end;
bt_uuid_t uuid;
if (status) {
error("Scan Refresh %s", att_ecode2str(status));
@ -162,7 +152,9 @@ static void refresh_discovered_cb(uint8_t status, GSList *chars,
scan->refresh_handle = chr->value_handle;
gatt_discover_char_desc(scan->attrib, start, end,
bt_uuid16_create(&uuid, GATT_CLIENT_CHARAC_CFG_UUID);
gatt_discover_desc(scan->attrib, start, end, &uuid,
discover_descriptor_cb, user_data);
}