# Copyright 2023 Google LLC # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # https://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License.
from dataclasses import dataclass import hci_packets as hci import link_layer_packets as ll import unittest from hci_packets import ErrorCode from py.bluetooth import Address from py.controller import ControllerTest
@dataclass class TestRound:
req_tx_phys: int
req_rx_phys: int
# 1. The Upper Tester sends an HCI_LE_Set_PHY command to the IUT with the ALL_PHYS field set # to a value of 0x03. The Upper Tester receives an HCI_Command_Status event indicating # success in response. The controller may send a LL_PHY_REQ to the Lower Tester. In this case, # the Lower Tester sends a LL_PHY_RSP specifying the current PHY in both directions in # response and the IUT completes the transaction with an LL_PHY_UPDATE_IND. Whether or not # the procedure is carried out with the Lower Tester, the Upper Tester receives an # HCI_LE_PHY_Update_Complete event from the IUT indicating both directions are operating # using the LE 1M PHY.
controller.send_cmd(
hci.LeSetPhy(connection_handle=acl_connection_handle,
all_phys_no_transmit_preference=True,
all_phys_no_receive_preference=True,
tx_phys=0,
rx_phys=0))
# 2. Perform steps 3–9 2N times as follows, where N is the number of cases in Table 4.78, Table # 4.79, or Table 4.80 (selected based on the supported PHY(s)): # ▪ firstly using cases 1 to N from the relevant table in order; # ▪ then using the cases from the relevant table in a random order.
phy_c_to_p = 0x1
phy_p_to_c = 0x1 for test_round in test_rounds:
(phy_c_to_p, phy_p_to_c) = await self.steps_3_9(peer_address, acl_connection_handle,
phy_c_to_p, phy_p_to_c,
**vars(test_round))
# 3. Lower Tester sends an LL_PHY_REQ PDU to the IUT with the payload specified in the relevant # table.
controller.send_ll(
ll.LlPhyReq(source_address=peer_address,
destination_address=controller.address,
tx_phys=req_tx_phys,
rx_phys=req_rx_phys))
# 4. Lower Tester receives an LL_PHY_UPDATE_IND PDU from the IUT with a value selected for # PHY_C_TO_P and PHY_P_TO_C that is either a bit value present in the LL_PHY_REQ or zero, # with a maximum of 1 bit set for each field. If either the PHY_C_TO_P or PHY_P_TO_C fields are # nonzero, then the Instant shall have a valid value.
phy_update_ind = await self.expect_ll(
ll.LlPhyUpdateInd(source_address=controller.address,
destination_address=peer_address,
phy_c_to_p=self.Any,
phy_p_to_c=self.Any))
# 5. Maintain the connection using empty DATA packets until the event count matches the Instant # indicated in the LL_PHY_UPDATE_IND packet.
# 6. Once the event count matches the time, the PHY(s) selected by the IUT in the # LL_PHY_UPDATE_IND packet will be used.
# 7. At the Instant of the PHY change start maintaining the connection with the selected PHY(s).
# 8. IUT sends empty DATA packets to the Lower Tester, and Lower Tester acknowledges these # packets, using the selected PHY(s).
# 9. If the PHY(s) were changed, Upper Tester receives an LE_PHY_Update_Complete event from # the IUT containing the PHY(s) selected. If both PHYs were NOT changed, Upper Tester does # NOT receive an LE_PHY_Update_Complete event.
next_phy_c_to_p = phy_update_ind.phy_c_to_p or phy_c_to_p
next_phy_p_to_c = phy_update_ind.phy_p_to_c or phy_p_to_c
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