This patch registers the ATTIO callbacks, and triggers the Appearance
characteristic read by UUID when the ATT connection is established (if
appearance value is not found in the storage).
---
profiles/gatt/gas.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 69 insertions(+), 0 deletions(-)
diff --git a/profiles/gatt/gas.c b/profiles/gatt/gas.c
index d13eadc..76db130 100644
--- a/profiles/gatt/gas.c
+++ b/profiles/gatt/gas.c
@@ -31,6 +31,7 @@
#include "device.h"
#include "att.h"
#include "gattrib.h"
+#include "attio.h"
#include "gatt.h"
#include "log.h"
#include "gas.h"
@@ -40,12 +41,17 @@ struct gas {
struct btd_device *device;
struct att_range gap; /* GAP Primary service range */
struct att_range gatt; /* GATT Primary service range */
+ GAttrib *attrib;
+ guint attioid;
};
static GSList *devices = NULL;
static void gas_free(struct gas *gas)
{
+ if (gas->attioid)
+ btd_device_remove_attio_callback(gas->device, gas->attioid);
+
btd_device_unref(gas->device);
g_free(gas);
}
@@ -58,6 +64,65 @@ static gint cmp_device(gconstpointer a, gconstpointer b)
return (gas->device == device ? 0 : -1);
}
+static void gap_appearance_cb(guint8 status, const guint8 *pdu, guint16 plen,
+ gpointer user_data)
+{
+ struct att_data_list *list = NULL;
+ uint16_t app;
+ uint8_t *atval;
+
+ if (status != 0) {
+ error("Read characteristics by UUID failed: %s",
+ att_ecode2str(status));
+ return;
+ }
+
+ list = dec_read_by_type_resp(pdu, plen);
+ if (list == NULL)
+ return;
+
+ if (list->len != 4) {
+ error("GAP Appearance value: invalid data");
+ goto done;
+ }
+
+ atval = list->data[0] + 2; /* skip handle value */
+ app = att_get_u16(atval);
+
+ DBG("GAP Appearance: 0x%04x", app);
+
+done:
+ att_data_list_free(list);
+}
+
+static void attio_connected_cb(GAttrib *attrib, gpointer user_data)
+{
+ struct gas *gas = user_data;
+ uint16_t app;
+
+ gas->attrib = g_attrib_ref(attrib);
+
+ if (device_get_appearance(gas->device, &app) < 0) {
+ bt_uuid_t uuid;
+
+ bt_uuid16_create(&uuid, GATT_CHARAC_APPEARANCE);
+
+ gatt_read_char_by_uuid(gas->attrib, gas->gap.start,
+ gas->gap.end, &uuid,
+ gap_appearance_cb, gas);
+ }
+
+ /* TODO: Read other GAP characteristics - See Core spec page 1739 */
+}
+
+static void attio_disconnected_cb(gpointer user_data)
+{
+ struct gas *gas = user_data;
+
+ g_attrib_unref(gas->attrib);
+ gas->attrib = NULL;
+}
+
int gas_register(struct btd_device *device, struct att_range *gap,
struct att_range *gatt)
{
@@ -73,6 +138,10 @@ int gas_register(struct btd_device *device, struct att_range *gap,
devices = g_slist_append(devices, gas);
+ gas->attioid = btd_device_add_attio_callback(device,
+ attio_connected_cb,
+ attio_disconnected_cb, gas);
+
return 0;
}
--
1.7.8.6
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