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hog: Discover descriptors for all characteristics

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"Report" characteristic has "Report Reference Characteristic" descriptor and
"Client Characteristic Configuration" descriptor.
This commit is contained in:
Claudio Takahasi 2012-07-03 15:42:58 -03:00 committed by Johan Hedberg
parent bc464376d0
commit 8627f8f4df
1 changed files with 55 additions and 1 deletions
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56
input/hog_device.c
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@ -64,6 +64,55 @@ struct hog_device {
static GSList *devices = NULL;
static void discover_descriptor_cb(guint8 status, const guint8 *pdu,
guint16 len, gpointer user_data)
{
struct report *report = user_data;
struct att_data_list *list;
uint8_t format;
int i;
if (status != 0) {
error("Discover all characteristic descriptors failed: %s",
att_ecode2str(status));
return;
}
list = dec_find_info_resp(pdu, len, &format);
if (list == NULL)
return;
if (format != 0x01)
goto done;
for (i = 0; i < list->num; i++) {
uint16_t uuid16;
uint8_t *value;
value = list->data[i];
uuid16 = att_get_u16(&value[2]);
DBG("%s descriptor: 0x%04x", report->decl->uuid, uuid16);
}
done:
att_data_list_free(list);
}
static void discover_descriptor(GAttrib *attrib, struct gatt_char *chr,
struct gatt_char *next, gpointer user_data)
{
uint16_t start, end;
start = chr->value_handle + 1;
end = (next ? next->handle - 1 : 0xffff);
if (start > end)
return;
gatt_find_info(attrib, start, end, discover_descriptor_cb, user_data);
}
static void char_discovered_cb(GSList *chars, guint8 status, gpointer user_data)
{
struct hog_device *hogdev = user_data;
@ -80,9 +129,12 @@ static void char_discovered_cb(GSList *chars, guint8 status, gpointer user_data)
bt_uuid16_create(&report_uuid, HOG_REPORT_UUID);
for (l = chars; l; l = g_slist_next(l)) {
struct gatt_char *chr = l->data;
struct gatt_char *chr, *next;
bt_uuid_t uuid;
chr = l->data;
next = l->next ? l->next->data : NULL;
DBG("0x%04x UUID: %s properties: %02x",
chr->handle, chr->uuid, chr->properties);
@ -94,6 +146,8 @@ static void char_discovered_cb(GSList *chars, guint8 status, gpointer user_data)
report = g_new0(struct report, 1);
report->decl = g_memdup(chr, sizeof(*chr));
hogdev->reports = g_slist_append(hogdev->reports, report);
discover_descriptor(hogdev->attrib, chr, next, hogdev);
}
}