Find the characteristic by the UUID provided on the External Report
Reference descriptor and enable notifications for it. The characteristic
will be handled as a HID report and it's data processed through the uhid
device.
---
profiles/input/hog_device.c | 76 +++++++++++++++++++++++++++++++++++----------
1 file changed, 59 insertions(+), 17 deletions(-)
diff --git a/profiles/input/hog_device.c b/profiles/input/hog_device.c
index f4cf596..5a1de12 100644
--- a/profiles/input/hog_device.c
+++ b/profiles/input/hog_device.c
@@ -170,23 +170,6 @@ static void write_ccc(uint16_t handle, gpointer user_data)
report_ccc_written_cb, hogdev);
}
-static void external_report_reference_cb(guint8 status, const guint8 *pdu,
- guint16 plen, gpointer user_data)
-{
- if (status != 0) {
- error("Read External Report Reference descriptor failed: %s",
- att_ecode2str(status));
- return;
- }
-
- if (plen != 3) {
- error("Malformed ATT read response");
- return;
- }
-
- DBG("External Report Reference read: 0x%02x 0x%02x", pdu[1], pdu[2]);
-}
-
static void report_reference_cb(guint8 status, const guint8 *pdu,
guint16 plen, gpointer user_data)
{
@@ -208,6 +191,9 @@ static void report_reference_cb(guint8 status, const guint8 *pdu,
DBG("Report ID: 0x%02x Report type: 0x%02x", pdu[1], pdu[2]);
}
+static void external_report_reference_cb(guint8 status, const guint8 *pdu,
+ guint16 plen, gpointer user_data);
+
static void discover_descriptor_cb(guint8 status, const guint8 *pdu,
guint16 len, gpointer user_data)
{
@@ -274,6 +260,62 @@ static void discover_descriptor(GAttrib *attrib, struct gatt_char *chr,
gatt_find_info(attrib, start, end, discover_descriptor_cb, user_data);
}
+static void external_service_char_cb(GSList *chars, guint8 status,
+ gpointer user_data)
+{
+ struct hog_device *hogdev = user_data;
+ struct report *report;
+ GSList *l;
+
+ if (status != 0) {
+ const char *str = att_ecode2str(status);
+ DBG("Discover external service characteristic failed: %s", str);
+ return;
+ }
+
+ for (l = chars; l; l = g_slist_next(l)) {
+ struct gatt_char *chr, *next;
+
+ chr = l->data;
+ next = l->next ? l->next->data : NULL;
+
+ DBG("0x%04x UUID: %s properties: %02x",
+ chr->handle, chr->uuid, chr->properties);
+
+ report = g_new0(struct report, 1);
+ report->hogdev = hogdev;
+ report->decl = g_memdup(chr, sizeof(*chr));
+ hogdev->reports = g_slist_append(hogdev->reports, report);
+ discover_descriptor(hogdev->attrib, chr, next, report);
+ }
+}
+
+static void external_report_reference_cb(guint8 status, const guint8 *pdu,
+ guint16 plen, gpointer user_data)
+{
+ struct hog_device *hogdev = user_data;
+ uint16_t uuid16;
+ bt_uuid_t uuid;
+
+ if (status != 0) {
+ error("Read External Report Reference descriptor failed: %s",
+ att_ecode2str(status));
+ return;
+ }
+
+ if (plen != 3) {
+ error("Malformed ATT read response");
+ return;
+ }
+
+ uuid16 = att_get_u16(&pdu[1]);
+ DBG("External report reference read, external report characteristic "
+ "UUID: 0x%04x", uuid16);
+ bt_uuid16_create(&uuid, uuid16);
+ gatt_discover_char(hogdev->attrib, 0x00, 0xff, &uuid,
+ external_service_char_cb, hogdev);
+}
+
static void report_map_read_cb(guint8 status, const guint8 *pdu, guint16 plen,
gpointer user_data)
{
--
1.7.11.2
--
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
