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ble client: implemented discover characteristic descriptors, not yet tested

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mila@ringwald.ch 2014-03-06 15:49:48 +00:00
parent 0f39c632fe
commit 804267da21
3 changed files with 80 additions and 3 deletions
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66
example/libusb/ble_client.c
View File

@ -113,6 +113,18 @@ static uint16_t l2cap_max_mtu_for_handle(uint16_t handle){
return l2cap_max_mtu();
}
// END Helper Functions
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;
uint8_t request[5];
request[0] = request_type;
bt_store_16(request, 1, start_handle);
bt_store_16(request, 3, end_handle);
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request));
return BLE_PERIPHERAL_OK;
}
static le_command_status_t att_find_by_type_value_request(uint16_t request_type, uint16_t attribute_group_type, uint16_t peripheral_handle, uint16_t start_handle, uint16_t end_handle, uint8_t * value, uint16_t value_size){
if (!l2cap_can_send_conectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
@ -184,6 +196,10 @@ static le_command_status_t send_gatt_characteristic_request(le_peripheral_t *per
return att_read_by_type_or_group_request(ATT_READ_BY_TYPE_REQUEST, GATT_CHARACTERISTICS_UUID, peripheral->handle, peripheral->start_group_handle, peripheral->end_group_handle);
}
static le_command_status_t send_gatt_characteristic_descriptor_request(le_peripheral_t *peripheral){
return att_find_information_request(ATT_FIND_INFORMATION_REQUEST, peripheral->handle, peripheral->start_group_handle, peripheral->end_group_handle);
}
static inline void send_gatt_complete_event(le_peripheral_t * peripheral, uint8_t type, uint8_t status){
le_peripheral_event_t event;
event.type = type;
@ -341,13 +357,19 @@ static void handle_peripheral_list(){
if (status != BLE_PERIPHERAL_OK) break;
peripheral->state = P_W4_CHARACTERISTIC_QUERY_RESULT;
break;
case P_W2_SEND_CHARACTERISTIC_WITH_UUID_QUERY:
// TODO:
status = send_gatt_characteristic_request(peripheral);
if (status != BLE_PERIPHERAL_OK) break;
peripheral->state = P_W4_CHARACTERISTIC_WITH_UUID_QUERY_RESULT;
break;
case P_W2_SEND_CHARACTERISTIC_DESCRIPTOR_QUERY:
status = send_gatt_characteristic_descriptor_request(peripheral);
if (status != BLE_PERIPHERAL_OK) break;
peripheral->state = P_W4_CHARACTERISTIC_WITH_UUID_QUERY_RESULT;
break;
case P_W2_SEND_INCLUDED_SERVICE_QUERY:
status = send_gatt_included_service_request(peripheral);
if (status != BLE_PERIPHERAL_OK) break;
@ -535,6 +557,16 @@ le_command_status_t le_central_discover_characteristics_for_service_by_uuid128(l
return le_central_discover_characteristics_for_handle_range_by_uuid128(peripheral, service->start_group_handle, service->end_group_handle, uuid128);
}
le_command_status_t le_central_discover_characteristic_descriptors(le_peripheral_t *peripheral, le_characteristic_t *characteristic){
if (peripheral->state != P_CONNECTED) return BLE_PERIPHERAL_IN_WRONG_STATE;
peripheral->start_group_handle = characteristic->value_handle + 1;
peripheral->end_group_handle = characteristic->end_handle;
peripheral->state = P_W2_SEND_CHARACTERISTIC_DESCRIPTOR_QUERY;
gatt_client_run();
return BLE_PERIPHERAL_OK;
}
void test_client();
@ -839,6 +871,9 @@ static inline void trigger_next_characteristic_by_uuid_query(le_peripheral_t * p
trigger_next_query(peripheral, last_result_handle, P_W2_SEND_INCLUDED_SERVICE_WITH_UUID_QUERY, GATT_CHARACTERISTIC_QUERY_COMPLETE);
}
static inline void trigger_next_characteristic_descriptor_query(le_peripheral_t * peripheral, uint16_t last_result_handle){
trigger_next_query(peripheral, last_result_handle, P_W2_SEND_CHARACTERISTIC_DESCRIPTOR_QUERY, GATT_CHARACTERISTIC_DESCRIPTOR_QUERY_COMPLETE);
}
static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *packet, uint16_t size){
if (packet_type != ATT_DATA_PACKET) return;
@ -918,7 +953,6 @@ static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pa
break;
case ATT_FIND_BY_TYPE_VALUE_RESPONSE:
{
printf("ATT_FIND_BY_TYPE_VALUE_RESPONSE \n");
uint8_t pair_size = 4;
le_service_t service;
le_service_event_t event;
@ -937,6 +971,27 @@ static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pa
trigger_next_service_by_uuid_query(peripheral, service.end_group_handle);
break;
}
case ATT_FIND_INFORMATION_REPLY:
{
uint8_t pair_size = 4;
le_characteristic_descriptor_t descriptor;
le_characteristic_descriptor_event_t event;
event.type = GATT_CHARACTERISTIC_DESCRIPTOR_QUERY_RESULT;
int i;
for (i = 1; i<size; i+=pair_size){
descriptor.handle = READ_BT_16(packet,i);
descriptor.uuid16 = READ_BT_16(packet,i+2);
event.characteristic_descriptor = descriptor;
(*le_central_callback)((le_central_event_t*)&event);
}
trigger_next_characteristic_descriptor_query(peripheral, descriptor.handle);
break;
}
break;
case ATT_ERROR_RESPONSE:
// printf("ATT_ERROR_RESPONSE error %u, state %u\n", packet[4], peripheral->state);
switch (packet[4]){
@ -955,15 +1010,20 @@ static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pa
send_gatt_complete_event(peripheral, GATT_CHARACTERISTIC_QUERY_COMPLETE, 0);
break;
case P_W4_CHARACTERISTIC_DESCRIPTOR_QUERY_RESULT:
peripheral->state = P_CONNECTED;
break;
case P_W4_INCLUDED_SERVICE_QUERY_RESULT:
peripheral->state = P_CONNECTED;
send_gatt_complete_event(peripheral, GATT_INCLUDED_SERVICE_QUERY_COMPLETE, 0);
send_gatt_complete_event(peripheral, GATT_CHARACTERISTIC_DESCRIPTOR_QUERY_COMPLETE, 0);
break;
default:
printf("ATT_ERROR_ATTRIBUTE_NOT_FOUND in 0x%02x\n", peripheral->state);
return;
}
break;
}
default:

15
example/libusb/ble_client.h
View File

@ -85,6 +85,8 @@ typedef enum {
P_W4_CHARACTERISTIC_QUERY_RESULT,
P_W2_SEND_CHARACTERISTIC_WITH_UUID_QUERY,
P_W4_CHARACTERISTIC_WITH_UUID_QUERY_RESULT,
P_W2_SEND_CHARACTERISTIC_DESCRIPTOR_QUERY,
P_W4_CHARACTERISTIC_DESCRIPTOR_QUERY_RESULT,
P_W2_SEND_INCLUDED_SERVICE_QUERY,
P_W4_INCLUDED_SERVICE_QUERY_RESULT,
@ -166,6 +168,18 @@ typedef struct le_characteristic_event{
le_characteristic_t characteristic;
} le_characteristic_event_t;
typedef struct le_characteristic_descriptor{
uint16_t handle;
uint16_t uuid16;
} le_characteristic_descriptor_t;
typedef struct le_characteristic_descriptor_event{
uint8_t type;
le_characteristic_descriptor_t characteristic_descriptor;
} le_characteristic_descriptor_event_t;
void le_central_init();
void le_central_register_handler(void (*le_callback)(le_central_event_t * event));
@ -206,6 +220,7 @@ le_command_status_t le_central_discover_characteristics_in_handle_range_by_uuid1
le_command_status_t le_central_discover_characteristics_for_service_by_uuid16 (le_peripheral_t *context, le_service_t *service, uint16_t uuid16);
le_command_status_t le_central_discover_characteristics_for_service_by_uuid128(le_peripheral_t *context, le_service_t *service, uint8_t * uuid128);
le_command_status_t le_central_discover_characteristic_descriptors(le_peripheral_t *context, le_characteristic_t *characteristic);
le_command_status_t le_central_read_value_of_characteristic(le_peripheral_t *context, uint16_t characteristic_handle);

2
include/btstack/hci_cmds.h
View File

@ -230,6 +230,8 @@ extern "C" {
#define GATT_CHARACTERISTIC_QUERY_COMPLETE 0xA5
#define GATT_INCLUDED_SERVICE_QUERY_RESULT 0xA6
#define GATT_INCLUDED_SERVICE_QUERY_COMPLETE 0xA7
#define GATT_CHARACTERISTIC_DESCRIPTOR_QUERY_RESULT 0xA8
#define GATT_CHARACTERISTIC_DESCRIPTOR_QUERY_COMPLETE 0xA9
// data: event(8), len(8), status (8), hci_handle (16), attribute_handle (16)
#define ATT_HANDLE_VALUE_INDICATION_COMPLETE 0xAF