From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx> This command can be used to read attributes, it only works if an attribute has been selected with select-attribute. --- client/gatt.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ client/gatt.h | 2 ++ client/main.c | 11 +++++++++++ 3 files changed, 72 insertions(+) diff --git a/client/gatt.c b/client/gatt.c index f2830a3..56a9241 100644 --- a/client/gatt.c +++ b/client/gatt.c @@ -319,3 +319,62 @@ char *gatt_attribute_generator(const char *text, int state) return attribute_generator(text, state, descriptors); } + +static void read_reply(DBusMessage *message, void *user_data) +{ + DBusError error; + DBusMessageIter iter, array; + uint8_t *value; + int len; + + dbus_error_init(&error); + + if (dbus_set_error_from_message(&error, message) == TRUE) { + rl_printf("Failed to read: %s\n", error.name); + dbus_error_free(&error); + return; + } + + dbus_message_iter_init(message, &iter); + + if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) { + rl_printf("Invalid response to read\n"); + return; + } + + dbus_message_iter_recurse(&iter, &array); + dbus_message_iter_get_fixed_array(&array, &value, &len); + + if (len < 0) { + rl_printf("Unable to parse value\n"); + return; + } + + rl_hexdump(value, len); +} + +static void read_attribute(GDBusProxy *proxy) +{ + if (g_dbus_proxy_method_call(proxy, "ReadValue", NULL, read_reply, + NULL, NULL) == FALSE) { + rl_printf("Failed to read\n"); + return; + } + + rl_printf("Attempting to read %s\n", g_dbus_proxy_get_path(proxy)); +} + +void gatt_read_attribute(GDBusProxy *proxy) +{ + const char *iface; + + iface = g_dbus_proxy_get_interface(proxy); + if (!strcmp(iface, "org.bluez.GattCharacteristic1") || + !strcmp(iface, "org.bluez.GattDescriptor1")) { + read_attribute(proxy); + return; + } + + rl_printf("Unable to read attribute %s\n", + g_dbus_proxy_get_path(proxy)); +} diff --git a/client/gatt.h b/client/gatt.h index bb7cb1c..ac18a2a 100644 --- a/client/gatt.h +++ b/client/gatt.h @@ -33,3 +33,5 @@ void gatt_remove_descriptor(GDBusProxy *proxy); void gatt_list_attributes(const char *device); GDBusProxy *gatt_select_attribute(const char *path); char *gatt_attribute_generator(const char *text, int state); + +void gatt_read_attribute(GDBusProxy *proxy); diff --git a/client/main.c b/client/main.c index 1481694..e0f35e2 100644 --- a/client/main.c +++ b/client/main.c @@ -1212,6 +1212,16 @@ static void cmd_select_attribute(const char *arg) set_default_attribute(proxy); } +static void cmd_read(const char *arg) +{ + if (!default_attr) { + rl_printf("No attribute selected\n"); + return; + } + + gatt_read_attribute(default_attr); +} + static void cmd_version(const char *arg) { rl_printf("Version %s\n", VERSION); @@ -1339,6 +1349,7 @@ static const struct { dev_generator }, { "select-attribute", "<attribute>", cmd_select_attribute, "Select attribute", attribute_generator }, + { "read", NULL, cmd_read, "Read attribute value" }, { "version", NULL, cmd_version, "Display version" }, { "quit", NULL, cmd_quit, "Quit program" }, { "exit", NULL, cmd_quit }, -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html