This patch adds the handle discovery of the Scan Interval Window
Characteristic and writes the default value (hard-coded in the kernel)
of the scan interval, and scan window in the remote's characteristic.
---
profiles/scanparam/scan.c | 41 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/profiles/scanparam/scan.c b/profiles/scanparam/scan.c
index c6aaf97..03934b0 100644
--- a/profiles/scanparam/scan.c
+++ b/profiles/scanparam/scan.c
@@ -31,6 +31,7 @@
#include <bluetooth/bluetooth.h>
#include <bluetooth/uuid.h>
+#include "log.h"
#include "adapter.h"
#include "device.h"
#include "att.h"
@@ -39,10 +40,18 @@
#include "attio.h"
#include "scan.h"
+#define SCAN_INTERVAL_WIN_UUID 0x2A4F
+
+#define SCAN_INTERVAL 0x0060
+#define SCAN_WINDOW 0x0030
+
struct scan {
struct btd_device *device;
GAttrib *attrib;
+ struct att_range range;
guint attioid;
+ uint16_t interval;
+ uint16_t window;
};
GSList *servers = NULL;
@@ -55,11 +64,42 @@ static gint scan_device_cmp(gconstpointer a, gconstpointer b)
return (device == scan->device ? 0 : -1);
}
+static void iwin_discovered_cb(GSList *chars, guint8 status,
+ gpointer user_data)
+{
+ struct scan *scan = user_data;
+ struct gatt_char *chr;
+ uint8_t value[4];
+
+ if (status) {
+ error("Discover Scan Interval Window: %s",
+ att_ecode2str(status));
+ return;
+ }
+
+ chr = chars->data;
+
+ DBG("Scan Interval Window handle: 0x%04x",
+ chr->value_handle);
+
+ att_put_u16(SCAN_INTERVAL, &value[0]);
+ att_put_u16(SCAN_WINDOW, &value[2]);
+
+ gatt_write_char(scan->attrib, chr->value_handle, value,
+ sizeof(value), NULL, NULL);
+}
+
static void attio_connected_cb(GAttrib *attrib, gpointer user_data)
{
struct scan *scan = user_data;
+ bt_uuid_t iwin_uuid;
+
+ bt_uuid16_create(&iwin_uuid, SCAN_INTERVAL_WIN_UUID);
scan->attrib = g_attrib_ref(attrib);
+
+ gatt_discover_char(scan->attrib, scan->range.start, scan->range.end,
+ &iwin_uuid, iwin_discovered_cb, scan);
}
static void attio_disconnected_cb(gpointer user_data)
@@ -76,6 +116,7 @@ int scan_register(struct btd_device *device, struct gatt_primary *prim)
scan = g_new0(struct scan, 1);
scan->device = btd_device_ref(device);
+ scan->range = prim->range;
scan->attioid = btd_device_add_attio_callback(device,
attio_connected_cb,
attio_disconnected_cb,
--
1.7.12
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