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ble client: start implement in-depth search for included characteristics

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This commit is contained in:
mila@ringwald.ch 2013-11-29 21:42:15 +00:00
parent e79a28b681
commit 04af4d87c5
2 changed files with 52 additions and 38 deletions
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70
example/libusb/ble_client.c
View File

@ -114,6 +114,19 @@ void le_central_register_handler(void (*le_callback)(le_central_event_t* event))
}
}
static inline uint16_t end_group_handle_for_peripheral(le_peripheral_t * peripheral){
return peripheral->nodes[peripheral->depth].end_group_handle;
}
static inline uint16_t start_group_handle_for_peripheral(le_peripheral_t * peripheral){
return peripheral->nodes[peripheral->depth].start_group_handle;
}
static inline void set_node_for_peripheral(le_peripheral_t *peripheral, uint8_t depth, uint16_t start_handle, uint16_t end_handle){
peripheral->depth = depth;
peripheral->nodes[depth].start_group_handle = start_handle;
peripheral->nodes[depth].end_group_handle = end_handle;
}
static void send_gatt_connection_complete_event(le_peripheral_t * peripheral, uint8_t status){
@ -124,12 +137,29 @@ static void send_gatt_connection_complete_event(le_peripheral_t * peripheral, ui
(*le_central_callback)((le_central_event_t*)&event);
}
static inline void send_gatt_complete_event(le_peripheral_t * peripheral, uint8_t type){
le_query_complete_event_t event;
event.type = type;
event.peripheral = peripheral;
(*le_central_callback)((le_central_event_t*)&event);
}
static inline void handle_gatt_service_complete_event(le_peripheral_t * peripheral){
peripheral->state = P_CONNECTED;
send_gatt_complete_event(peripheral, GATT_SERVICE_QUERY_COMPLETE);
}
static inline void handle_gatt_characteristic_complete_event(le_peripheral_t * peripheral){
peripheral->state = P_CONNECTED;
send_gatt_complete_event(peripheral, GATT_CHARACTERISTIC_QUERY_COMPLETE);
}
static le_command_status_t send_gatt_characteristic_request(le_peripheral_t *peripheral){
if (!l2cap_can_send_conectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
uint8_t request[7];
request[0] = ATT_READ_BY_TYPE_REQUEST;
uint16_t att_client_end_handle = peripheral->end_group_handle;
uint16_t att_client_end_handle = end_group_handle_for_peripheral(peripheral);
uint16_t att_client_attribute_group_type = GATT_CHARACTERISTICS_UUID;
bt_store_16(request, 1, peripheral->last_group_handle+1);
@ -400,8 +430,8 @@ if (peripheral->state != P_CONNECTED) return BLE_PERIPHERAL_IN_WRONG_STATE;
// send will increment last_group_handle, so substract in advance
peripheral->last_group_handle = service->start_group_handle - 1;
peripheral->end_group_handle = service->end_group_handle;
set_node_for_peripheral(peripheral, 0, service->start_group_handle, service->end_group_handle);
peripheral->state = P_W2_SEND_CHARACTERISTIC_QUERY;
gatt_client_run();
return BLE_PERIPHERAL_OK;
@ -637,22 +667,10 @@ static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pa
}
printf("att_packet_handler :: ATT_READ_BY_GROUP_TYPE_RESPONSE ---> DONE\n");
// DONE
peripheral->state = P_CONNECTED;
le_query_complete_event_t event;
event.type = GATT_SERVICE_QUERY_COMPLETE;
event.peripheral = peripheral;
(*le_central_callback)((le_central_event_t*)&event);
handle_gatt_service_complete_event(peripheral);
break;
}
case ATT_READ_BY_TYPE_RESPONSE:
// if (peripheral->state != P_W4_CHARACTERISTIC_QUERY_RESULT) return;
/*
uint8_t permision;
uint16_t handle;
uint16_t uuid16;
uint8_t uuid128[16];
*/
{
uint8_t attr_length = packet[1];
uint8_t uuid_length = attr_length - 5;
@ -680,42 +698,30 @@ static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pa
(*le_central_callback)((le_central_event_t*)&event);
}
if (peripheral->last_group_handle < peripheral->end_group_handle){
if (peripheral->last_group_handle < end_group_handle_for_peripheral(peripheral)){
peripheral->state = P_W2_SEND_CHARACTERISTIC_QUERY;
break;
}
printf("att_packet_handler :: ATT_READ_BY_TYPE_RESPONSE ---> DONE\n");
// DONE
peripheral->state = P_CONNECTED;
le_query_complete_event_t event;
event.type = GATT_CHARACTERISTIC_QUERY_COMPLETE;
event.peripheral = peripheral;
(*le_central_callback)((le_central_event_t*)&event);
handle_gatt_characteristic_complete_event(peripheral);
break;
}
case ATT_ERROR_RESPONSE:
switch (packet[4]){
case ATT_ERROR_ATTRIBUTE_NOT_FOUND: {
le_query_complete_event_t event;
event.peripheral = peripheral;
event.type = 0;
switch(peripheral->state){
case P_W4_SERVICE_QUERY_RESULT:
event.type = GATT_SERVICE_QUERY_COMPLETE;
handle_gatt_service_complete_event(peripheral);
break;
case P_W4_CHARACTERISTIC_QUERY_RESULT:
event.type = GATT_CHARACTERISTIC_QUERY_COMPLETE;
handle_gatt_characteristic_complete_event(peripheral);
break;
default:
return;
}
peripheral->state = P_CONNECTED;
if (event.type){
(*le_central_callback)((le_central_event_t*)&event);
}
break;
}
default:

20
example/libusb/ble_client.h
View File

@ -50,6 +50,7 @@
extern "C" {
#endif
#define LE_CENTRAL_MAX_INCLUDE_DEPTH 3
typedef struct le_central_event {
uint8_t type;
@ -94,6 +95,10 @@ typedef enum {
BLE_PERIPHERAL_BUSY
} le_command_status_t;
typedef struct le_service_node{
uint16_t start_group_handle;
uint16_t end_group_handle;
} le_service_node_t;
typedef struct le_peripheral{
linked_item_t item;
@ -107,7 +112,9 @@ typedef struct le_peripheral{
// for service discovery
uint16_t last_group_handle;
uint16_t end_group_handle;
le_service_node_t nodes[LE_CENTRAL_MAX_INCLUDE_DEPTH];
uint8_t depth;
} le_peripheral_t;
typedef struct le_peripheral_event{
@ -116,6 +123,12 @@ typedef struct le_peripheral_event{
uint8_t status;
} le_peripheral_event_t;
// TODO replace with peripheral event
typedef struct le_query_complete_event{
uint8_t type;
le_peripheral_t * peripheral;
} le_query_complete_event_t;
typedef struct le_service{
uint16_t start_group_handle;
uint16_t end_group_handle;
@ -128,11 +141,6 @@ typedef struct le_service_event{
le_service_t service;
} le_service_event_t;
typedef struct le_query_complete_event{
uint8_t type;
le_peripheral_t * peripheral;
} le_query_complete_event_t;
typedef struct le_characteristic{
uint8_t properties;
uint16_t value_handle;