---
profiles/cyclingspeed/cyclingspeed.c | 72 +++++++++++++++++++++++++++++++++++-
1 file changed, 71 insertions(+), 1 deletion(-)
diff --git a/profiles/cyclingspeed/cyclingspeed.c b/profiles/cyclingspeed/cyclingspeed.c
index deae8a9..4f0a0a5 100644
--- a/profiles/cyclingspeed/cyclingspeed.c
+++ b/profiles/cyclingspeed/cyclingspeed.c
@@ -185,6 +185,17 @@ static void destroy_csc(gpointer user_data)
g_free(csc);
}
+static void char_write_cb(guint8 status, const guint8 *pdu, guint16 len,
+ gpointer user_data)
+{
+ char *msg = user_data;
+
+ if (status != 0)
+ error("%s failed", msg);
+
+ g_free(msg);
+}
+
static void read_feature_cb(guint8 status, const guint8 *pdu,
guint16 len, gpointer user_data)
{
@@ -274,9 +285,25 @@ static void discover_desc_cb(guint8 status, const guint8 *pdu,
if (uuid != GATT_CLIENT_CHARAC_CFG_UUID)
continue;
- if (g_strcmp0(ch->uuid, CSC_MEASUREMENT_UUID) == 0)
+ if (g_strcmp0(ch->uuid, CSC_MEASUREMENT_UUID) == 0) {
+ char *msg;
+ uint8_t attr_val[2];
+
ch->csc->measurement_ccc_handle = handle;
+ if (g_slist_length(ch->csc->cadapter->watchers) == 0) {
+ att_put_u16(0x0000, attr_val);
+ msg = g_strdup("Disable measurement");
+ } else {
+ att_put_u16(GATT_CLIENT_CHARAC_CFG_NOTIF_BIT,
+ attr_val);
+ msg = g_strdup("Enable measurement");
+ }
+
+ gatt_write_char(ch->csc->attrib, handle, attr_val,
+ sizeof(attr_val), char_write_cb, msg);
+ }
+
/* We only want CCC, can break here */
break;
}
@@ -348,6 +375,40 @@ static void discover_char_cb(GSList *chars, guint8 status, gpointer user_data)
read_feature_cb, csc);
}
+static void enable_measurement(gpointer data, gpointer user_data)
+{
+ struct csc *csc = data;
+ uint16_t handle = csc->measurement_ccc_handle;
+ uint8_t value[2];
+ char *msg;
+
+ if (csc->attrib == NULL || !handle)
+ return;
+
+ att_put_u16(GATT_CLIENT_CHARAC_CFG_NOTIF_BIT, value);
+ msg = g_strdup("Enable measurement");
+
+ gatt_write_char(csc->attrib, handle, value, sizeof(value),
+ char_write_cb, msg);
+}
+
+static void disable_measurement(gpointer data, gpointer user_data)
+{
+ struct csc *csc = data;
+ uint16_t handle = csc->measurement_ccc_handle;
+ uint8_t value[2];
+ char *msg;
+
+ if (csc->attrib == NULL || !handle)
+ return;
+
+ att_put_u16(0x0000, value);
+ msg = g_strdup("Disable measurement");
+
+ gatt_write_char(csc->attrib, handle, value, sizeof(value),
+ char_write_cb, msg);
+}
+
static void attio_connected_cb(GAttrib *attrib, gpointer user_data)
{
struct csc *csc = user_data;
@@ -380,6 +441,9 @@ static void watcher_exit_cb(DBusConnection *conn, void *user_data)
cadapter->watchers = g_slist_remove(cadapter->watchers, watcher);
g_dbus_remove_watch(conn, watcher->id);
+
+ if (g_slist_length(cadapter->watchers) == 0)
+ g_slist_foreach(cadapter->devices, disable_measurement, 0);
}
static DBusMessage *register_watcher(DBusConnection *conn, DBusMessage *msg,
@@ -405,6 +469,9 @@ static DBusMessage *register_watcher(DBusConnection *conn, DBusMessage *msg,
watcher->srv = g_strdup(sender);
watcher->path = g_strdup(path);
+ if (g_slist_length(cadapter->watchers) == 0)
+ g_slist_foreach(cadapter->devices, enable_measurement, 0);
+
cadapter->watchers = g_slist_prepend(cadapter->watchers, watcher);
DBG("cycling watcher [%s] registered", path);
@@ -431,6 +498,9 @@ static DBusMessage *unregister_watcher(DBusConnection *conn, DBusMessage *msg,
cadapter->watchers = g_slist_remove(cadapter->watchers, watcher);
g_dbus_remove_watch(conn, watcher->id);
+ if (g_slist_length(cadapter->watchers) == 0)
+ g_slist_foreach(cadapter->devices, disable_measurement, 0);
+
DBG("cycling watcher [%s] unregistered", path);
return dbus_message_new_method_return(msg);
--
1.8.0
--
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