mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-01-26 12:35:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

ble client: draft implementation of reliable write, missing validation code

Browse Source
This commit is contained in:
mila@ringwald.ch 2014-03-20 16:08:56 +00:00
parent 2bdad75a63
commit 58e74a4132
2 changed files with 69 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

84
example/libusb/ble_client.c
View File

@ -292,6 +292,9 @@ static le_command_status_t send_gatt_execute_write_request(le_peripheral_t * per
return att_execute_write_request(ATT_EXECUTE_WRITE_REQUEST, peripheral->handle, 1);
}
static le_command_status_t send_gatt_cancel_prepared_write_request(le_peripheral_t * peripheral){
return att_execute_write_request(ATT_EXECUTE_WRITE_REQUEST, peripheral->handle, 0);
}
static inline void send_gatt_complete_event(le_peripheral_t * peripheral, uint8_t type, uint8_t status){
le_peripheral_event_t event;
@ -498,6 +501,12 @@ static void handle_peripheral_list(){
if (status != BLE_PERIPHERAL_OK) break;
peripheral->state = P_W4_PREPARE_WRITE_RESULT;
break;
case P_W2_PREPARE_RELIABLE_WRITE:
status = send_gatt_prepare_write_request(peripheral);
if (status != BLE_PERIPHERAL_OK) break;
peripheral->state = P_W4_PREPARE_RELIABLE_WRITE_RESULT;
break;
case P_W2_EXECUTE_PREPARED_WRITE:
status = send_gatt_execute_write_request(peripheral);
@ -505,7 +514,12 @@ static void handle_peripheral_list(){
peripheral->state = P_W4_EXECUTE_PREPARED_WRITE_RESULT;
break;
case P_W2_CANCEL_PREPARED_WRITE:
status = send_gatt_cancel_prepared_write_request(peripheral);
if (status != BLE_PERIPHERAL_OK) break;
peripheral->state = P_W4_CANCEL_PREPARED_WRITE_RESULT;
break;
case P_W2_DISCONNECT:
peripheral->state = P_W4_DISCONNECTED;
hci_send_cmd(&hci_disconnect, peripheral->handle,0x13);
@ -751,6 +765,15 @@ le_command_status_t le_central_write_long_value_of_characteristic(le_peripheral_
return BLE_PERIPHERAL_OK;
}
le_command_status_t le_central_reliable_write_long_value_of_characteristic(le_peripheral_t *context, uint16_t characteristic_handle, uint16_t length, uint8_t * data);
if (peripheral->state != P_CONNECTED) return BLE_PERIPHERAL_IN_WRONG_STATE;
peripheral->characteristic_value_handle = value_handle;
peripheral->characteristic_value_offset = 0;
peripheral->state = P_W2_PREPARE_RELIABLE_WRITE;
gatt_client_run();
return BLE_PERIPHERAL_OK;
}
static void gatt_client_run(){
if (state == W4_ON) return;
@ -1078,6 +1101,21 @@ static inline void trigger_next_characteristic_descriptor_query(le_peripheral_t
trigger_next_query(peripheral, last_result_handle, P_W2_SEND_CHARACTERISTIC_DESCRIPTOR_QUERY, GATT_CHARACTERISTIC_DESCRIPTOR_QUERY_COMPLETE);
}
static inline void trigger_next_prepare_write_query(le_peripheral_t * peripheral, peripheral_state_t next_query_state, peripheral_state_t done_state){
uint16_t blob_length = write_blob_length(peripheral);
if (blob_length == 0){
peripheral->state = done_state;
return;
}
peripheral->characteristic_value_offset += blob_length;
peripheral->state = next_query_state;
}
static int is_value_valid(le_peripheral_t *peripheral, uint8_t *packet, uint16_t size){
// TODO
return 0;
}
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;
le_peripheral_t * peripheral = get_peripheral_for_handle(handle);
@ -1217,23 +1255,37 @@ static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pa
peripheral->state = P_W2_SEND_READ_BLOB_QUERY;
break;
case ATT_PREPARE_WRITE_RESPONSE:{
if (peripheral->state != P_W4_PREPARE_WRITE_RESULT) return;
uint16_t blob_length = write_blob_length(peripheral);
if (blob_length == 0){
peripheral->state = P_W2_EXECUTE_PREPARED_WRITE;
return;
}
peripheral->characteristic_value_offset += blob_length;
peripheral->state = P_W2_PREPARE_WRITE;
case ATT_PREPARE_WRITE_RESPONSE:
switch (peripheral->state){
case P_W4_PREPARE_WRITE_RESULT:
trigger_next_prepare_write_query(peripheral, P_W2_PREPARE_WRITE, P_W2_EXECUTE_PREPARED_WRITE);
break;
case P_W4_PREPARE_RELIABLE_WRITE_RESULT:
if (is_value_valid(peripheral, packet, size)){
trigger_next_prepare_write_query(peripheral, P_W2_PREPARE_RELIABLE_WRITE, P_W2_EXECUTE_PREPARED_WRITE);
break;
}
peripheral->state = P_W2_CANCEL_PREPARED_WRITE;
break;
default:
break;
}
break;
}
case ATT_EXECUTE_WRITE_REQUEST:
if (peripheral->state != P_W4_EXECUTE_PREPARED_WRITE_RESULT) return;
peripheral->state = P_CONNECTED;
send_gatt_complete_event(peripheral, GATT_LONG_CHARACTERISTIC_VALUE_WRITE_COMPLETE, 0);
switch (peripheral->state){
case P_W4_EXECUTE_PREPARED_WRITE_RESULT:
peripheral->state = P_CONNECTED;
send_gatt_complete_event(peripheral, GATT_LONG_CHARACTERISTIC_VALUE_WRITE_COMPLETE, 0);
break;
case P_W4_CANCEL_PREPARED_WRITE_RESULT:
peripheral->state = P_CONNECTED;
send_gatt_complete_event(peripheral, GATT_LONG_CHARACTERISTIC_VALUE_WRITE_COMPLETE, 1);
break;
default:
break;
}
break;
case ATT_ERROR_RESPONSE:

1
example/libusb/ble_client.h
View File

@ -270,6 +270,7 @@ le_command_status_t le_central_write_value_of_characteristic_without_response(le
le_command_status_t le_central_write_value_of_characteristic(le_peripheral_t *context, uint16_t characteristic_handle, uint16_t length, uint8_t * data);
le_command_status_t le_central_write_long_value_of_characteristic(le_peripheral_t *context, uint16_t characteristic_handle, uint16_t length, uint8_t * data);
le_command_status_t le_central_reliable_write_long_value_of_characteristic(le_peripheral_t *context, uint16_t characteristic_handle, uint16_t length, uint8_t * data);
le_command_status_t le_central_subscribe_to_characteristic(le_peripheral_t *context, uint16_t characteristic_handle);
le_command_status_t le_central_unsubscribe_from_characteristic(le_peripheral_t *context, uint16_t characteristic_handle);