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ble client: implemented notifications and indications

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This commit is contained in:
mila@ringwald.ch 2014-03-21 23:20:12 +00:00
parent a94dda185f
commit 6c55686a87
3 changed files with 48 additions and 14 deletions
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57
example/libusb/ble_client.c
View File

@ -121,6 +121,15 @@ static uint16_t l2cap_max_mtu_for_handle(uint16_t handle){
// END Helper Functions
static le_command_status_t att_confirmation(uint16_t peripheral_handle){
if (!l2cap_can_send_conectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
uint8_t request[1];
request[0] = ATT_HANDLE_VALUE_CONFIRMATION;
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request));
return BLE_PERIPHERAL_OK;
}
static le_command_status_t att_find_information_request(uint16_t request_type, uint16_t peripheral_handle, uint16_t start_handle, uint16_t end_handle){
if (!l2cap_can_send_conectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
@ -396,6 +405,13 @@ static void handle_peripheral_list(){
for (it = (linked_item_t *) le_connections; it ; it = it->next){
le_peripheral_t * peripheral = (le_peripheral_t *) it;
// printf("handle_peripheral_list, status %u\n", peripheral->state);
if (peripheral->send_confirmation){
peripheral->send_confirmation = 0;
att_confirmation(peripheral->handle);
return;
}
switch (peripheral->state){
case P_W2_CONNECT:
peripheral->state = P_W4_CONNECTED;
@ -1047,23 +1063,31 @@ static void report_gatt_included_service(le_peripheral_t * peripheral, uint8_t *
(*le_central_callback)((le_central_event_t*)&event);
}
static void report_gatt_long_characteristic_value_blob(le_peripheral_t * peripheral, uint8_t * value, int blob_length, int value_offset){
static void send_characteristic_value_event(le_peripheral_t * peripheral, uint16_t handle, uint8_t * value, uint16_t length, uint16_t offset, uint8_t event_type){
le_characteristic_value_event_t event;
event.type = GATT_LONG_CHARACTERISTIC_VALUE_QUERY_RESULT;
event.characteristic_value_blob_length = blob_length;
event.characteristic_value_offset = value_offset;
event.characteristic_value = value;
(*le_central_callback)((le_central_event_t*)&event);
}
static void report_gatt_characteristic_value(le_peripheral_t * peripheral, uint8_t * value, int length){
le_characteristic_value_event_t event;
event.type = GATT_CHARACTERISTIC_VALUE_QUERY_RESULT;
event.type = event_type;
event.characteristic_value_handle = handle;
event.characteristic_value_blob_length = length;
event.characteristic_value = value;
event.characteristic_value_offset = offset;
(*le_central_callback)((le_central_event_t*)&event);
}
static void report_gatt_long_characteristic_value_blob(le_peripheral_t * peripheral, uint8_t * value, uint16_t blob_length, int value_offset){
send_characteristic_value_event(peripheral, peripheral->characteristic_value_handle, value, blob_length, value_offset, GATT_LONG_CHARACTERISTIC_VALUE_QUERY_RESULT);
}
static void report_gatt_notification(le_peripheral_t * peripheral, uint16_t handle, uint8_t * value, int length){
send_characteristic_value_event(peripheral, handle, value, length, 0, GATT_NOTIFICATION);
}
static void report_gatt_indication(le_peripheral_t * peripheral, uint16_t handle, uint8_t * value, int length){
send_characteristic_value_event(peripheral, handle, value, length, 0, GATT_INDICATION);
}
static void report_gatt_characteristic_value(le_peripheral_t * peripheral, uint16_t handle, uint8_t * value, int length){
send_characteristic_value_event(peripheral, handle, value, length, 0, GATT_CHARACTERISTIC_VALUE_QUERY_RESULT);
}
static void trigger_next_query(le_peripheral_t * peripheral, uint16_t last_result_handle, peripheral_state_t next_query_state, uint8_t complete_event_type){
if (last_result_handle < peripheral->end_group_handle){
@ -1146,7 +1170,14 @@ static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pa
printf("ATT_READ_BY_GROUP_TYPE_RESPONSE");
break;
}
break;
case ATT_HANDLE_VALUE_NOTIFICATION:
report_gatt_notification(peripheral, READ_BT_16(packet,1), &packet[3], size-3);
break;
case ATT_HANDLE_VALUE_INDICATION:
report_gatt_indication(peripheral, READ_BT_16(packet,1), &packet[3], size-3);
peripheral->send_confirmation = 1;
break;
case ATT_READ_BY_TYPE_RESPONSE:
@ -1201,7 +1232,7 @@ static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pa
}
case P_W4_READ_CHARACTERISTIC_VALUE_RESULT:
peripheral->state = P_CONNECTED;
report_gatt_characteristic_value(peripheral, &packet[1], size-1);
report_gatt_characteristic_value(peripheral, peripheral->characteristic_value_handle, &packet[1], size-1);
break;
default:
break;

2
example/libusb/ble_client.h
View File

@ -155,6 +155,7 @@ typedef struct le_peripheral{
uint8_t* characteristic_value;
uint8_t filter_with_uuid;
uint8_t send_confirmation;
} le_peripheral_t;
@ -207,6 +208,7 @@ typedef struct le_characteristic_value{
typedef struct le_characteristic_value_event{
uint8_t type;
uint16_t characteristic_value_handle;
uint16_t characteristic_value_blob_length;
uint16_t characteristic_value_offset;
uint8_t * characteristic_value;

3
include/btstack/hci_cmds.h
View File

@ -238,7 +238,8 @@ extern "C" {
#define GATT_CHARACTERISTIC_VALUE_WRITE_RESPONSE 0xAD
#define GATT_LONG_CHARACTERISTIC_VALUE_WRITE_RESPONSE 0xAE
#define GATT_LONG_CHARACTERISTIC_VALUE_WRITE_COMPLETE 0xAF
#define GATT_NOTIFICATION 0xBC
#define GATT_INDICATION 0xBD
// data: event(8), len(8), status (8), hci_handle (16), attribute_handle (16)
#define ATT_HANDLE_VALUE_INDICATION_COMPLETE 0xBF