From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
This command can be used to start/stop changes on the attribute value,
it only works if an attribute has been selected with select-attribute.
---
client/gatt.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
client/gatt.h | 1 +
client/main.c | 16 ++++++++++++++++
3 files changed, 64 insertions(+)
diff --git a/client/gatt.c b/client/gatt.c
index 207e049..3785452 100644
--- a/client/gatt.c
+++ b/client/gatt.c
@@ -465,3 +465,50 @@ void gatt_write_attribute(GDBusProxy *proxy, const char *arg)
rl_printf("Unable to write attribute %s\n",
g_dbus_proxy_get_path(proxy));
}
+
+static void notify_reply(DBusMessage *message, void *user_data)
+{
+ bool enable = GPOINTER_TO_UINT(user_data);
+ DBusError error;
+
+ dbus_error_init(&error);
+
+ if (dbus_set_error_from_message(&error, message) == TRUE) {
+ rl_printf("Failed to %s notify: %s\n",
+ enable ? "start" : "stop", error.name);
+ dbus_error_free(&error);
+ return;
+ }
+
+ rl_printf("Notify %s\n", enable == TRUE ? "started" : "stopped");
+}
+
+static void notify_attribute(GDBusProxy *proxy, bool enable)
+{
+ const char *method;
+
+ if (enable == TRUE)
+ method = "StartNotify";
+ else
+ method = "StopNotify";
+
+ if (g_dbus_proxy_method_call(proxy, method, NULL, notify_reply,
+ GUINT_TO_POINTER(enable), NULL) == FALSE) {
+ rl_printf("Failed to %s notify\n", enable ? "start" : "stop");
+ return;
+ }
+}
+
+void gatt_notify_attribute(GDBusProxy *proxy, bool enable)
+{
+ const char *iface;
+
+ iface = g_dbus_proxy_get_interface(proxy);
+ if (!strcmp(iface, "org.bluez.GattCharacteristic1")) {
+ notify_attribute(proxy, enable);
+ return;
+ }
+
+ rl_printf("Unable to notify attribute %s\n",
+ g_dbus_proxy_get_path(proxy));
+}
diff --git a/client/gatt.h b/client/gatt.h
index b99f0f0..effee5e 100644
--- a/client/gatt.h
+++ b/client/gatt.h
@@ -36,3 +36,4 @@ char *gatt_attribute_generator(const char *text, int state);
void gatt_read_attribute(GDBusProxy *proxy);
void gatt_write_attribute(GDBusProxy *proxy, const char *arg);
+void gatt_notify_attribute(GDBusProxy *proxy, bool enable);
diff --git a/client/main.c b/client/main.c
index 56d4750..57b1201 100644
--- a/client/main.c
+++ b/client/main.c
@@ -1301,6 +1301,21 @@ static void cmd_write(const char *arg)
gatt_write_attribute(default_attr, arg);
}
+static void cmd_notify(const char *arg)
+{
+ dbus_bool_t enable;
+
+ if (parse_argument_on_off(arg, &enable) == FALSE)
+ return;
+
+ if (!default_attr) {
+ rl_printf("No attribute selected\n");
+ return;
+ }
+
+ gatt_notify_attribute(default_attr, enable ? true : false);
+}
+
static void cmd_version(const char *arg)
{
rl_printf("Version %s\n", VERSION);
@@ -1433,6 +1448,7 @@ static const struct {
{ "read", NULL, cmd_read, "Read attribute value" },
{ "write", "<data=[xx xx ...]>", cmd_write,
"Write attribute value" },
+ { "notify", "<on/off>", cmd_notify, "Notify attribute value" },
{ "version", NULL, cmd_version, "Display version" },
{ "quit", NULL, cmd_quit, "Quit program" },
{ "exit", NULL, cmd_quit },
--
2.1.0
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