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use l2cap_send_prepared_connectionless in ble_client

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matthias.ringwald@gmail.com 2014-04-03 20:50:06 +00:00
parent 3d0fc0bc8b
commit 5f1a957593
1 changed files with 38 additions and 24 deletions
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62
example/libusb/ble_client.c
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@ -124,24 +124,26 @@ static uint16_t l2cap_max_mtu_for_handle(uint16_t handle){
} }
// END Helper Functions // END Helper Functions
// precondition: l2cap_can_send_connectionless_packet_now() == true
static le_command_status_t att_confirmation(uint16_t peripheral_handle){ static le_command_status_t att_confirmation(uint16_t peripheral_handle){
uint8_t request[1]; if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
l2cap_reserve_packet_buffer();
uint8_t * request = l2cap_get_outgoing_buffer();
request[0] = ATT_HANDLE_VALUE_CONFIRMATION; request[0] = ATT_HANDLE_VALUE_CONFIRMATION;
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request)); l2cap_send_prepared_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, 1);
return BLE_PERIPHERAL_OK; 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){ 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_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY; if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
uint8_t request[5]; l2cap_reserve_packet_buffer();
uint8_t * request = l2cap_get_outgoing_buffer();
request[0] = request_type; request[0] = request_type;
bt_store_16(request, 1, start_handle); bt_store_16(request, 1, start_handle);
bt_store_16(request, 3, end_handle); bt_store_16(request, 3, end_handle);
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request)); l2cap_send_prepared_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, 5);
return BLE_PERIPHERAL_OK; return BLE_PERIPHERAL_OK;
} }
@ -149,7 +151,8 @@ static le_command_status_t att_find_information_request(uint16_t request_type, u
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){ 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_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY; if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
uint8_t request[23]; // TODO: use prepared packets l2cap_reserve_packet_buffer();
uint8_t * request = l2cap_get_outgoing_buffer();
request[0] = request_type; request[0] = request_type;
bt_store_16(request, 1, start_handle); bt_store_16(request, 1, start_handle);
@ -157,78 +160,86 @@ static le_command_status_t att_find_by_type_value_request(uint16_t request_type,
bt_store_16(request, 5, attribute_group_type); bt_store_16(request, 5, attribute_group_type);
memcpy(&request[7], value, value_size); memcpy(&request[7], value, value_size);
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, 7+value_size); l2cap_send_prepared_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, 7+value_size);
return BLE_PERIPHERAL_OK; return BLE_PERIPHERAL_OK;
} }
static le_command_status_t att_read_by_type_or_group_request(uint16_t request_type, uint16_t attribute_group_type, uint16_t peripheral_handle, uint16_t start_handle, uint16_t end_handle){ static le_command_status_t att_read_by_type_or_group_request(uint16_t request_type, uint16_t attribute_group_type, uint16_t peripheral_handle, uint16_t start_handle, uint16_t end_handle){
if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY; if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
// printf("att_read_by_type_or_group_request : %02X, %02X - %02X \n", peripheral_handle, start_handle, end_handle); l2cap_reserve_packet_buffer();
uint8_t request[7]; uint8_t * request = l2cap_get_outgoing_buffer();
request[0] = request_type; request[0] = request_type;
bt_store_16(request, 1, start_handle); bt_store_16(request, 1, start_handle);
bt_store_16(request, 3, end_handle); bt_store_16(request, 3, end_handle);
bt_store_16(request, 5, attribute_group_type); bt_store_16(request, 5, attribute_group_type);
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request)); l2cap_send_prepared_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, 7);
return BLE_PERIPHERAL_OK; return BLE_PERIPHERAL_OK;
} }
static le_command_status_t att_read_request(uint16_t request_type, uint16_t peripheral_handle, uint16_t attribute_handle){ static le_command_status_t att_read_request(uint16_t request_type, uint16_t peripheral_handle, uint16_t attribute_handle){
if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY; if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
uint8_t request[3]; l2cap_reserve_packet_buffer();
uint8_t * request = l2cap_get_outgoing_buffer();
request[0] = request_type; request[0] = request_type;
bt_store_16(request, 1, attribute_handle); bt_store_16(request, 1, attribute_handle);
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request)); l2cap_send_prepared_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, 3);
return BLE_PERIPHERAL_OK; return BLE_PERIPHERAL_OK;
} }
static le_command_status_t att_read_blob_request(uint16_t request_type, uint16_t peripheral_handle, uint16_t attribute_handle, uint16_t value_offset){ static le_command_status_t att_read_blob_request(uint16_t request_type, uint16_t peripheral_handle, uint16_t attribute_handle, uint16_t value_offset){
if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY; if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
uint8_t request[5];
l2cap_reserve_packet_buffer();
uint8_t * request = l2cap_get_outgoing_buffer();
request[0] = request_type; request[0] = request_type;
bt_store_16(request, 1, attribute_handle); bt_store_16(request, 1, attribute_handle);
bt_store_16(request, 3, value_offset); bt_store_16(request, 3, value_offset);
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request)); l2cap_send_prepared_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, 5);
return BLE_PERIPHERAL_OK; return BLE_PERIPHERAL_OK;
} }
static le_command_status_t att_write_request(uint16_t request_type, uint16_t peripheral_handle, uint16_t attribute_handle, uint16_t value_length, uint8_t * value){ static le_command_status_t att_write_request(uint16_t request_type, uint16_t peripheral_handle, uint16_t attribute_handle, uint16_t value_length, uint8_t * value){
if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY; if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
// TODO: use prepared buffers
uint8_t request[3+value_length]; l2cap_reserve_packet_buffer();
uint8_t * request = l2cap_get_outgoing_buffer();
request[0] = request_type; request[0] = request_type;
bt_store_16(request, 1, attribute_handle); bt_store_16(request, 1, attribute_handle);
memcpy(&request[3], value, value_length); memcpy(&request[3], value, value_length);
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request)); l2cap_send_prepared_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, 3 + value_length);
return BLE_PERIPHERAL_OK; return BLE_PERIPHERAL_OK;
} }
static le_command_status_t att_execute_write_request(uint16_t request_type, uint16_t peripheral_handle, uint8_t execute_write){ static le_command_status_t att_execute_write_request(uint16_t request_type, uint16_t peripheral_handle, uint8_t execute_write){
if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY; if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
uint8_t request[2];
l2cap_reserve_packet_buffer();
uint8_t * request = l2cap_get_outgoing_buffer();
request[0] = request_type; request[0] = request_type;
request[1] = execute_write; request[1] = execute_write;
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request)); l2cap_send_prepared_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, 2);
return BLE_PERIPHERAL_OK; return BLE_PERIPHERAL_OK;
} }
static le_command_status_t att_prepare_write_request(uint16_t request_type, uint16_t peripheral_handle, uint16_t attribute_handle, uint16_t value_offset, uint16_t blob_length, uint8_t * value){ static le_command_status_t att_prepare_write_request(uint16_t request_type, uint16_t peripheral_handle, uint16_t attribute_handle, uint16_t value_offset, uint16_t blob_length, uint8_t * value){
if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY; if (!l2cap_can_send_connectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
uint8_t request[5+blob_length];
l2cap_reserve_packet_buffer();
uint8_t * request = l2cap_get_outgoing_buffer();
request[0] = request_type; request[0] = request_type;
bt_store_16(request, 1, attribute_handle); bt_store_16(request, 1, attribute_handle);
bt_store_16(request, 3, value_offset); bt_store_16(request, 3, value_offset);
memcpy(&request[5], &value[value_offset], blob_length); memcpy(&request[5], &value[value_offset], blob_length);
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request)); l2cap_send_prepared_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, 5+blob_length);
return BLE_PERIPHERAL_OK; return BLE_PERIPHERAL_OK;
} }
@ -453,10 +464,13 @@ static void handle_peripheral_list(){
{ {
peripheral->state = P_W4_EXCHANGE_MTU; peripheral->state = P_W4_EXCHANGE_MTU;
uint16_t mtu = l2cap_max_mtu_for_handle(peripheral->handle); uint16_t mtu = l2cap_max_mtu_for_handle(peripheral->handle);
uint8_t request[3];
// TODO: extract as att_exchange_mtu_request
l2cap_reserve_packet_buffer();
uint8_t * request = l2cap_get_outgoing_buffer();
request[0] = ATT_EXCHANGE_MTU_REQUEST; request[0] = ATT_EXCHANGE_MTU_REQUEST;
bt_store_16(request, 1, mtu); bt_store_16(request, 1, mtu);
l2cap_send_connectionless(peripheral->handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request)); l2cap_send_prepared_connectionless(peripheral->handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, 3);
return; return;
} }
case P_W2_SEND_SERVICE_QUERY: case P_W2_SEND_SERVICE_QUERY: