2010-12-22 19:11:48

by Bruna Moreira

Subject: [PATCH] Change LE scan interval and window to recommended values

Replace default scan interval and scan window values with recommended
ones for general discovery procedure, according to the Core
specification.
---
plugins/hciops.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/plugins/hciops.c b/plugins/hciops.c
index 43e3d93..be143e9 100644
--- a/plugins/hciops.c
+++ b/plugins/hciops.c
@@ -2583,8 +2583,10 @@ static int hciops_start_scanning(int index)

memset(&cp, 0, sizeof(cp));
cp.type = 0x01; /* Active scanning */
- cp.interval = htobs(0x0010);
- cp.window = htobs(0x0010);
+ /* The recommended value for scan interval and window is 11.25 msec.
+ * It is calculated by: time = n * 0.625 msec */
+ cp.interval = htobs(0x0012);
+ cp.window = htobs(0x0012);
cp.own_bdaddr_type = 0; /* Public address */
cp.filter = 0; /* Accept all adv packets */

--
1.7.0.4

2010-12-22 22:42:55

by Johan Hedberg

Subject: Re: [PATCH] Change LE scan interval and window to recommended values

Hi Bruna,

On Wed, Dec 22, 2010, Bruna Moreira wrote:
> Replace default scan interval and scan window values with recommended
> ones for general discovery procedure, according to the Core
> specification.
> ---
> plugins/hciops.c | 6 ++++--
> 1 files changed, 4 insertions(+), 2 deletions(-)

Pushed upstream. Thanks.

Johan