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https://github.com/Telecominfraproject/OpenCellular.git
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6c980a4dbf
Added check for collision just before transmitting on CC line. To check for collision, RX monitoring is left on all the time (except when in the act of receiving or transmitting, or in between receiving and sending a goodCRC), and a simple check for RX transmission started is used to see if the CC line is idle or not. RX monitoring is also changed to only trigger on 3 edges within 20us, as per the PD spec. When a collision is detected by seeing that CC is not idle, the transmitting packet is dropped. BUG=chrome-os-partner:30135 BRANCH=samus TEST=load onto samus and zinger. make sure we negotiate and make sure custom VDMs succeed. enabled pings and made sure we stay alive with pings for a few min. Also added code to pd_rx_handler to toggle a test point on EVT board to verify the timing of when we get RX interrupts: Change-Id: I22d172163319437d3d901e019eda79d4d592f6b8 Signed-off-by: Alec Berg <alecaberg@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/226118 Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
/* Copyright 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Test utilities for USB PD unit test.
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*/
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#ifndef __USB_PD_TEST_UTIL_H
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#define __USB_PD_TEST_UTIL_H
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/* Simulate Rx message */
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void pd_test_rx_set_preamble(int port, int has_preamble);
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void pd_test_rx_msg_append_bits(int port, uint32_t bits, int nb);
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void pd_test_rx_msg_append_kcode(int port, uint8_t kcode);
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void pd_test_rx_msg_append_sop(int port);
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void pd_test_rx_msg_append_eop(int port);
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void pd_test_rx_msg_append_last_edge(int port);
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void pd_test_rx_msg_append_4b(int port, uint8_t val);
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void pd_test_rx_msg_append_short(int port, uint16_t val);
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void pd_test_rx_msg_append_word(int port, uint32_t val);
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void pd_simulate_rx(int port);
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/* Verify Tx message */
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int pd_test_tx_msg_verify_kcode(int port, uint8_t kcode);
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int pd_test_tx_msg_verify_sop(int port);
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int pd_test_tx_msg_verify_eop(int port);
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int pd_test_tx_msg_verify_4b5b(int port, uint8_t b4);
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int pd_test_tx_msg_verify_short(int port, uint16_t val);
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int pd_test_tx_msg_verify_word(int port, uint32_t val);
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int pd_test_tx_msg_verify_crc(int port);
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#endif /* __USB_PD_TEST_UTIL_H */
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