48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
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/******************************************************************************
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*
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* Copyright (C) 2022 Google, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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namespace bluetooth {
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namespace hal {
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constexpr uint32_t kBytesToTest = 0x12345678;
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constexpr uint8_t kFirstByte = (const uint8_t&)kBytesToTest;
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constexpr bool isLittleEndian = kFirstByte == 0x78;
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constexpr bool isBigEndian = kFirstByte == 0x12;
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static_assert((isLittleEndian || isBigEndian) && (isLittleEndian != isBigEndian));
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constexpr uint32_t BTSNOOP_VERSION_NUMBER = isLittleEndian ? 0x01000000 : 1;
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constexpr uint32_t BTSNOOP_DATALINK_TYPE =
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isLittleEndian ? 0xea030000 : 0x03ea; // Datalink Type code for HCI UART (H4) is 1002
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class SnoopLoggerCommon {
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public:
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struct FileHeaderType {
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uint8_t identification_pattern[8];
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uint32_t version_number;
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uint32_t datalink_type;
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} __attribute__((__packed__));
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static constexpr FileHeaderType kBtSnoopFileHeader = {
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.identification_pattern = {'b', 't', 's', 'n', 'o', 'o', 'p', 0x00},
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.version_number = BTSNOOP_VERSION_NUMBER,
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.datalink_type = BTSNOOP_DATALINK_TYPE};
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};
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} // namespace hal
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} // namespace bluetooth
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