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- // // ******************************************************************
- // // /\ /| @File Constants.h
- // // \ V/ @Brief
- // // | "") @Author lijinwen, ghz005@uni-trend.com.cn
- // // / | @Creation 2024-05-17
- // // / \\ @Modified 2024-06-24
- // // *(__\_\
- // // ******************************************************************
- #pragma once
- #include <cstdint>
- #include "../BaseHelper/Constants.h"
- namespace Protocol
- {
- //差分非对称长度比例阈值
- constexpr double USB_DIFF_LEN_DIFFERENCE_THRESHOLD = 0.95;
- //最小序列长度
- constexpr int32_t USB_MINIMUM_SEQUENCE_LENGTH = 12;
- //时域差异容差阈值
- constexpr double USB_TIME_DIFFERENCE_THRESHOLD = 0.28;
- //时域差异容差阈值
- constexpr double USB_TIME_DIFFERENCE_THRESHOLD_HIGH_SPEED = 0.36;
- //同步帧长度容差
- constexpr double USB_SYNC_BIT_TOL = 0.95;
- //同步帧长度
- //NRZI 连续补位/个数
- constexpr int32_t USB_NRZI_COMPLEMENT_PER_NUM = 6;
- constexpr int32_t USB_IDLE_MIN_BIT_LEN = 8;
- constexpr int32_t USB_BYTE_BIT_COUNT = 8;
- constexpr double USB_LOW_SPEED_MHZ = 1.5;
- constexpr double USB_FULL_SPEED_MHZ = 12;
- constexpr double USB_HIGH_SPEED_MHZ = 480;
- //同步帧长度
- constexpr int32_t USB_USB_SYNC_BIT_MAX_LEN = 32;
- constexpr int32_t USB_USB_SYNC_BIT_NORMAL_SPEED_LEN = USB_BYTE_BIT_COUNT;
- constexpr int32_t USB_USB_SYNC_BIT_HIGH_SPEED_LEN = USB_USB_SYNC_BIT_MAX_LEN;
- constexpr int32_t USB_ADDR_BIT_COUNT = 7;
- constexpr int32_t USB_ENDPOINT_BIT_COUNT = 4;
- constexpr int32_t USB_FRAMEID_BIT_COUNT = 11;
- constexpr int32_t USB_CRC5_BIT_COUNT = 5;
- constexpr int32_t USB_CRC16_BIT_COUNT = 16;
- }
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