This patch enables indication of the Service Changed characteristic
setting the indication bit in the Client Characteristic Configuration
descriptor.
---
profiles/gatt/gas.c | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/profiles/gatt/gas.c b/profiles/gatt/gas.c
index d36a457..dda4886 100644
--- a/profiles/gatt/gas.c
+++ b/profiles/gatt/gas.c
@@ -100,6 +100,27 @@ done:
att_data_list_free(list);
}
+static void ccc_written_cb(guint8 status, const guint8 *pdu, guint16 plen,
+ gpointer user_data)
+{
+ if (status) {
+ error("Write Service Changed CCC failed: %s",
+ att_ecode2str(status));
+ return;
+ }
+
+ DBG("Service Changed indications enabled");
+}
+
+static void write_ccc(GAttrib *attrib, uint16_t handle, gpointer user_data)
+{
+ uint8_t value[2];
+
+ att_put_u16(GATT_CLIENT_CHARAC_CFG_IND_BIT, value);
+ gatt_write_char(attrib, handle, value, sizeof(value), ccc_written_cb,
+ user_data);
+}
+
static void indication_cb(const uint8_t *pdu, uint16_t len, gpointer user_data)
{
struct gas *gas = user_data;
@@ -145,6 +166,7 @@ static void gatt_service_changed_cb(guint8 status, const guint8 *pdu,
static void gatt_descriptors_cb(guint8 status, const guint8 *pdu, guint16 len,
gpointer user_data)
{
+ struct gas *gas = user_data;
struct att_data_list *list;
int i;
uint8_t format;
@@ -170,6 +192,7 @@ static void gatt_descriptors_cb(guint8 status, const guint8 *pdu, guint16 len,
ccc = att_get_u16(value);
uuid16 = att_get_u16(&value[2]);
DBG("CCC: 0x%04x UUID: 0x%04x", ccc, uuid16);
+ write_ccc(gas->attrib, ccc, user_data);
}
done:
--
1.7.8.6
--
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