From: Claudio Takahasi <claudio.takahasi@xxxxxxxxxxxxx>
This patch adds the GATT operation to read the value of the Report
Reference descriptor of the Report characteristic.
---
attrib/gatt.h | 1 +
input/hog_device.c | 27 +++++++++++++++++++++++----
2 files changed, 24 insertions(+), 4 deletions(-)
diff --git a/attrib/gatt.h b/attrib/gatt.h
index 9ffe58f..c7e79ab 100644
--- a/attrib/gatt.h
+++ b/attrib/gatt.h
@@ -46,6 +46,7 @@
#define GATT_CHARAC_FMT_UUID 0x2904
#define GATT_CHARAC_AGREG_FMT_UUID 0x2905
#define GATT_CHARAC_VALID_RANGE_UUID 0x2906
+#define GATT_REPORT_REFERENCE 0x2908
/* Client Characteristic Configuration bit field */
#define GATT_CLIENT_CHARAC_CFG_NOTIF_BIT 0x0001
diff --git a/input/hog_device.c b/input/hog_device.c
index 13c0c65..1c12b40 100644
--- a/input/hog_device.c
+++ b/input/hog_device.c
@@ -122,9 +122,27 @@ static void write_ccc(uint16_t handle, gpointer user_data)
report_ccc_written_cb, hogdev);
}
+static void report_reference_cb(guint8 status, const guint8 *pdu,
+ guint16 plen, gpointer user_data)
+{
+ if (status != 0) {
+ error("Read Report Reference descriptor failed: %s",
+ att_ecode2str(status));
+ return;
+ }
+
+ if (plen != 3) {
+ error("Malformed ATT read response");
+ return;
+ }
+
+ DBG("Report ID: 0x%02x Report type: 0x%02x", pdu[1], pdu[2]);
+}
+
static void discover_descriptor_cb(guint8 status, const guint8 *pdu,
guint16 len, gpointer user_data)
{
+ struct hog_device *hogdev = user_data;
struct att_data_list *list;
uint8_t format;
int i;
@@ -150,10 +168,11 @@ static void discover_descriptor_cb(guint8 status, const guint8 *pdu,
handle = att_get_u16(value);
uuid16 = att_get_u16(&value[2]);
- if (uuid16 != GATT_CLIENT_CHARAC_CFG_UUID)
- continue;
-
- write_ccc(handle, user_data);
+ if (uuid16 == GATT_CLIENT_CHARAC_CFG_UUID)
+ write_ccc(handle, user_data);
+ else if (uuid16 == GATT_REPORT_REFERENCE)
+ gatt_read_char(hogdev->attrib, handle, 0,
+ report_reference_cb, hogdev);
}
done:
--
1.7.10.2
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