Return-Path: From: To: CC: Subject: [PATCH v4 05/10] battery: Discover Characteristic Descriptors Date: Mon, 24 Sep 2012 09:15:14 +0200 Message-ID: <1348470919-25567-6-git-send-email-chen.ganir@ti.com> In-Reply-To: <1348470919-25567-1-git-send-email-chen.ganir@ti.com> References: <1348470919-25567-1-git-send-email-chen.ganir@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-bluetooth-owner@vger.kernel.org List-ID: From: Chen Ganir Discover all characteristic descriptors, and build a descriptor list. Presentation Format Descriptor and Client Characteristic Configuration descriptors are searched. --- profiles/battery/battery.c | 73 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 72 insertions(+), 1 deletion(-) diff --git a/profiles/battery/battery.c b/profiles/battery/battery.c index 5e52275..dada15b 100644 --- a/profiles/battery/battery.c +++ b/profiles/battery/battery.c @@ -51,7 +51,15 @@ static GSList *servers; struct characteristic { struct gatt_char attr; /* Characteristic */ struct battery *batt; /* Parent Battery Service */ + GSList *desc; /* Descriptors */ }; + +struct descriptor { + struct characteristic *ch; /* Parent Characteristic */ + uint16_t handle; /* Descriptor Handle */ + bt_uuid_t uuid; /* UUID */ +}; + static gint cmp_device(gconstpointer a, gconstpointer b) { const struct battery *batt = a; @@ -63,12 +71,21 @@ static gint cmp_device(gconstpointer a, gconstpointer b) return -1; } +static void char_free(gpointer user_data) +{ + struct characteristic *c = user_data; + + g_slist_free_full(c->desc, g_free); + + g_free(c); +} + static void battery_free(gpointer user_data) { struct battery *batt = user_data; if (batt->chars != NULL) - g_slist_free_full(batt->chars, g_free); + g_slist_free_full(batt->chars, char_free); if (batt->attioid > 0) btd_device_remove_attio_callback(batt->dev, batt->attioid); @@ -77,9 +94,48 @@ static void battery_free(gpointer user_data) g_attrib_unref(batt->attrib); btd_device_unref(batt->dev); + g_free(batt->svc_range); g_free(batt); } +static void discover_desc_cb(guint8 status, const guint8 *pdu, guint16 len, + gpointer user_data) +{ + struct characteristic *ch = user_data; + struct att_data_list *list; + uint8_t format; + int i; + + if (status != 0) { + error("Discover all characteristic descriptors failed [%s]: %s", + ch->attr.uuid, att_ecode2str(status)); + return; + } + + list = dec_find_info_resp(pdu, len, &format); + if (list == NULL) + return; + + for (i = 0; i < list->num; i++) { + struct descriptor *desc; + uint8_t *value; + + value = list->data[i]; + desc = g_new0(struct descriptor, 1); + desc->handle = att_get_u16(value); + desc->ch = ch; + + if (format == 0x01) + desc->uuid = att_get_uuid16(&value[2]); + else + desc->uuid = att_get_uuid128(&value[2]); + + ch->desc = g_slist_append(ch->desc, desc); + } + + att_data_list_free(list); +} + static void configure_battery_cb(GSList *characteristics, guint8 status, gpointer user_data) { @@ -95,6 +151,7 @@ static void configure_battery_cb(GSList *characteristics, guint8 status, for (l = characteristics; l; l = l->next) { struct gatt_char *c = l->data; struct characteristic *ch; + uint16_t start, end; ch = g_new0(struct characteristic, 1); ch->attr.handle = c->handle; @@ -104,6 +161,20 @@ static void configure_battery_cb(GSList *characteristics, guint8 status, ch->batt = batt; batt->chars = g_slist_append(batt->chars, ch); + + start = c->value_handle + 1; + + if (l->next != NULL) { + struct gatt_char *c = l->next->data; + if (start == c->handle) + continue; + end = c->handle - 1; + } else if (c->value_handle != batt->svc_range->end) + end = batt->svc_range->end; + else + continue; + + gatt_find_info(batt->attrib, start, end, discover_desc_cb, ch); } } -- 1.7.9.5