Discover and store each of the Heart Rate Service
characteristic descriptors.
---
profiles/heartrate/heartrate.c | 61 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 61 insertions(+)
diff --git a/profiles/heartrate/heartrate.c b/profiles/heartrate/heartrate.c
index 1114cff..e917f27 100644
--- a/profiles/heartrate/heartrate.c
+++ b/profiles/heartrate/heartrate.c
@@ -47,9 +47,16 @@ struct heartrate {
struct characteristic {
struct gatt_char attr; /*Characteristic*/
+ GSList *desc; /*Descriptors*/
struct heartrate *hr; /*Parent Heart Rate Service*/
};
+struct descriptor {
+ struct characteristic *ch;
+ uint16_t handle;
+ bt_uuid_t uuid;
+};
+
static GSList *hr_servers = NULL;
static gint cmp_device(gconstpointer a, gconstpointer b)
@@ -82,6 +89,44 @@ static void heartrate_destroy(gpointer user_data)
}
+static void discover_desc_cb(guint8 status, const guint8 *pdu,
+ guint16 len, gpointer user_data)
+{
+ struct characteristic *ch = user_data;
+ struct att_data_list *list;
+ uint8_t format;
+ int i;
+
+ if (status != 0) {
+ error("Discover all characteristic descriptors failed [%s]: %s",
+ ch->attr.uuid, att_ecode2str(status));
+ return;
+ }
+
+ list = dec_find_info_resp(pdu, len, &format);
+ if (list == NULL)
+ return;
+
+ for (i = 0; i < list->num; i++) {
+ struct descriptor *desc;
+ uint8_t *value;
+
+ value = list->data[i];
+ desc = g_new0(struct descriptor, 1);
+ desc->handle = att_get_u16(value);
+ desc->ch = ch;
+
+ if (format == 0x01)
+ desc->uuid = att_get_uuid16(&value[2]);
+ else
+ desc->uuid = att_get_uuid128(&value[2]);
+
+ ch->desc = g_slist_append(ch->desc, desc);
+ }
+
+ att_data_list_free(list);
+}
+
static void configure_heartrate_cb(GSList *characteristics, guint8 status,
gpointer user_data)
{
@@ -97,6 +142,7 @@ static void configure_heartrate_cb(GSList *characteristics, guint8 status,
for (l = characteristics; l; l = l->next) {
struct gatt_char *c = l->data;
struct characteristic *ch;
+ uint16_t start, end;
ch = g_new0(struct characteristic, 1);
ch->attr.handle = c->handle;
@@ -106,6 +152,21 @@ static void configure_heartrate_cb(GSList *characteristics, guint8 status,
ch->hr = hr;
hr->chars = g_slist_append(hr->chars, ch);
+
+ start = c->value_handle + 1;
+
+ if (l->next != NULL) {
+ struct gatt_char *c = l->next->data;
+ if (start == c->handle)
+ continue;
+ end = c->handle - 1;
+ } else if (c->value_handle != hr->svc_range->end) {
+ end = hr->svc_range->end;
+ } else {
+ continue;
+ }
+
+ gatt_find_info(hr->attrib, start, end, discover_desc_cb, ch);
}
}
--
1.7.9.5
--
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