698 lines
24 KiB
Python
698 lines
24 KiB
Python
# -*- coding: utf-8 -*-
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import sys
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import os
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import re
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import struct
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import argparse
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import datetime
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from functools import partial
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from vcd import VCDWriter, writer
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from vcd.common import VarType
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header = """
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▓▓▓▓▓ ░░░ ███████ ████████
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▓ ▓ ▒ ░ ██ ██ Streaming Trace
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▓ ▓ ▓ ░░ ███████ ██ VCD Recorder Utility
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▓ ▓ ▒ ░ ██ ██
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▓▓▓▓▓ ░░░ ███████ ██ (c) 2025 D.Hoeglinger
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"""
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def human_readable_size(size, decimal_places=2):
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for unit in ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB']:
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if size < 1024.0 or unit == 'PiB':
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break
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size /= 1024.0
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return f"{size:.{decimal_places}f} {unit}"
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def is_hex(s):
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return all(chr(c) in '0123456789abcdefABCDEF' for c in s)
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def bsd_hash(data):
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checksum = 0
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for c in data:
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checksum = (checksum >> 1) + ((checksum & 1) << 15)
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checksum += ord(c)
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checksum = checksum & 0xFFFF
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return checksum
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def hex_to_int(hex_digit):
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if hex_digit.isdigit():
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return int(hex_digit)
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elif hex_digit in 'ABCDEF':
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return ord(hex_digit) - ord('A') + 10
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elif hex_digit in 'abcdef':
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return ord(hex_digit) - ord('a') + 10
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else:
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raise ValueError("Invalid hexadecimal digit")
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def decode_hexstr(payload):
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value = bytearray()
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for i in range(0, len(payload), 2):
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b = hex_to_int(chr(payload[i]))
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b |= hex_to_int(chr(payload[i + 1])) << 4
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value.append(b)
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return bytes(value)
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def hexstr(payload):
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return payload.hex().upper()
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def decode_binstr(payload):
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value = 0
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for i,b in enumerate(payload):
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value |= b << (8 * i)
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return value
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class DecodeError(Exception):
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pass
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def cobs_decode(enc, delim):
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enc = list(enc)
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enc.append(delim)
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enc2 = enc[0:-1]
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length = len(enc2)
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if delim != 0x00:
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for i in range(0, len(enc2)):
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enc2[i] = enc[i] ^ delim
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dec = []
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code = 0xFF
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block = 0
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for i in range(0, length):
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byte = enc2[i]
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if block != 0:
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dec.append(byte)
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else:
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if (i + byte) > len(enc):
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raise DecodeError(f"Marker pointing to end of packet, at {i}, marker={byte}")
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if code != 0xFF:
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dec.append(0)
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code = byte
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block = code
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if code == 0:
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break
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block = block - 1
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return bytes(dec)
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def _memmove(data: bytearray, stidx: int, offset: int, mlen: int) -> None:
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for i in range(mlen):
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data[stidx + i] = data[stidx - offset + i]
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def fastlz_decompress_lv1(datain, doutlen):
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opcode_0 = datain[0]
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datain_idx = 1
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dataout = bytearray(doutlen)
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dataout_idx = 0;
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while True:
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op_type = opcode_0 >> 5
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op_data = opcode_0 & 31
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if op_type == 0b000:
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# literal run
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run = 1 + opcode_0
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dataout[dataout_idx:dataout_idx + run] = datain[datain_idx:datain_idx + run]
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datain_idx += run
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dataout_idx += run
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elif op_type == 0b111:
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# long match
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opcode_1 = datain[datain_idx]
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datain_idx += 1
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opcode_2 = datain[datain_idx]
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datain_idx += 1
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match_len = 9 + opcode_1
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ofs = (op_data << 8) + opcode_2 + 1
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_memmove(dataout, dataout_idx, ofs, match_len)
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dataout_idx += match_len
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else:
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# short match
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opcode_1 = datain[datain_idx]
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datain_idx += 1
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match_len = 2 + op_type
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ofs = (op_data << 8) + opcode_1 + 1
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_memmove(dataout, dataout_idx, ofs, match_len)
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dataout_idx += match_len
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if datain_idx < len(datain):
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opcode_0 = datain[datain_idx]
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datain_idx += 1
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else:
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break
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return bytes(dataout[:dataout_idx])
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def scan_for_signals(directory, predefined_signals):
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library_files = ['st.c', 'st.h']
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rx_events = re.compile(r'st_evtrace\(\"([^\"]+)\"')
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rx_scalars = re.compile(r'st_([usf])(8|16|32)trace\(\"([^\"]+)\"')
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rx_arrays = re.compile(r'st_a([us])(8|16|32)trace\(\"([^\"]+)\"\,\s*[^,]+,\s*((?:0x)?[a-zA-Z0-9]+)')
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rx_strings = re.compile(r'st_strtrace\(\"([^\"]+)\"')
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signals = {}
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valid = True
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def add_variable(tag, variable):
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hash = bsd_hash(tag)
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if hash in signals:
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if signals[hash] != variable:
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print(f"{file_path}: error: variable `{variable}` has conflicting hash with `{signals[hash]}`")
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valid = False
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else:
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signals[hash] = variable
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for predef_signal in predefined_signals:
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sig,_ = predef_signal.split(":")
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add_variable(sig, predef_signal)
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for root, _, files in os.walk(directory):
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for file in files:
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if file.endswith(('.c', '.h')) and (file not in library_files):
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file_path = os.path.join(root, file)
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with open(file_path, 'r') as f:
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content = f.read()
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for match in rx_events.finditer(content):
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tag = match.group(1)
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variable = f"{tag}:event"
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add_variable(tag, variable)
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for match in rx_scalars.finditer(content):
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tag = match.group(3)
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variable = f"{tag}:{match.group(1)}{match.group(2)}"
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add_variable(tag, variable)
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for match in rx_arrays.finditer(content):
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tag = match.group(3)
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variable = f"{tag}:{match.group(1)}{match.group(2)}[{int(match.group(4),0)}]"
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add_variable(tag, variable)
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for match in rx_strings.finditer(content):
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tag = match.group(1)
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variable = f"{tag}:string"
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add_variable(tag, variable)
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return list(signals.values()), valid
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class Filter:
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PREAMBLE = b"\x1b[s"
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EPILOUGE = b"\x1b[u"
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TAGCODE_LUT = {
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0x11 : "D1",
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0x12 : "D2",
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0x14 : "D4",
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0x21 : "V1",
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0x22 : "V2",
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0x24 : "V4",
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0x31 : "A1",
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0x32 : "A2",
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0x34 : "A4",
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0x44 : "S4",
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0x54 : "F4",
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0x60 : "EV"
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}
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FLAGS_COMPRESSED = (1 << 0)
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def __init__(self, on_value):
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self.preamble_i = 0
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self.epilouge_i = 0
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self.packet_buffer = []
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self.noise_buffer = []
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self.process_value = on_value
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self._on_noise = []
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self.packet_counter = 0
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self.packets_dropped = 0
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def onnoise(self, cb):
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self._on_noise.append(cb)
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def _emit_noise(self, b):
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for cb in self._on_noise:
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cb(b)
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def process(self, b):
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if self.preamble_i == (len(self.PREAMBLE)):
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self.packet_buffer.append(b)
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if b == self.EPILOUGE[self.epilouge_i]:
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self.epilouge_i += 1
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else:
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self.epilouge_i = 0
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if self.epilouge_i == (len(self.EPILOUGE)):
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self.process_packet(self.packet_buffer[:-len(self.EPILOUGE)])
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self.packet_buffer = []
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self.noise_buffer = []
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self.preamble_i = 0
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self.epilouge_i = 0
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else:
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if b == self.PREAMBLE[self.preamble_i]:
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self.preamble_i += 1
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self.noise_buffer.append(b)
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else:
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self.preamble_i = 0
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for nb in self.noise_buffer:
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self._emit_noise(nb)
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self.noise_buffer = []
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self._emit_noise(b)
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def disassemble_packet(self, packet):
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try:
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tagcode = packet[0]
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# ignore rubout packets
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if chr(tagcode) == ' ':
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return
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if tagcode not in self.TAGCODE_LUT:
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self.packets_dropped += 1
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return
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tag = self.TAGCODE_LUT[tagcode]
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value = None
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offset = 1
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match tag:
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case "D1"|"V1"|"A1":
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value = decode_binstr(packet[offset:offset+1])
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offset += 1
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case "D2"|"V2"|"A2":
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value = decode_binstr(packet[offset:offset+2])
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offset += 2
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case "D4"|"V4"|"A4"|"F4"|"S4":
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value = decode_binstr(packet[offset:offset+4])
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offset += 4
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sub = None
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if tag[0] == 'A' or tag[0] == 'S':
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sub = decode_binstr(packet[offset:offset+1])
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offset += 1
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hashtag = None
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if tag[0] != 'D':
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hashtag = decode_binstr(packet[-2:])
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except Exception as ex:
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self.packets_dropped += 1
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return
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self.process_value(hashtag, value, sub, tag)
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self.packet_counter += 1
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def disassemble_macropacket(self, packet):
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flags = packet[0]
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payload = packet[1:]
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try:
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macropack = cobs_decode(payload, 0x1B)
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if self.FLAGS_COMPRESSED & flags:
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frames = fastlz_decompress_lv1(macropack, 1024)
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else:
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frames = macropack
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macropack_delim = 0x00
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for pack in frames.split(bytes(bytearray([macropack_delim]))):
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if len(pack) == 0:
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continue
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try:
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decoded = cobs_decode(pack, macropack_delim)
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self.disassemble_packet(decoded)
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except:
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self.packets_dropped += 1
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except:
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self.packets_dropped += 1
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def process_packet(self, packet):
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if len(packet) == 0:
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return
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if is_hex(packet):
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packet = decode_hexstr(packet)
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if True or (len(packet) > 3 + 8 + 3):
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self.disassemble_macropacket(packet)
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else:
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self.disassemble_packet(packet)
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class Retagger:
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def __init__(self, on_value, tags=None):
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tags = tags or []
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self._tag_lut = {bsd_hash(tag):tag for tag in tags}
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self.process_value = on_value
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self.packets_dropped = 0
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def process(self, hashtag, number, sub, datatag):
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if hashtag in self._tag_lut or datatag[0] == 'D':
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tag = self._tag_lut.get(hashtag, None)
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self.process_value(tag, number, sub, datatag)
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else:
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self.packets_dropped += 1
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class VcdSink:
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def __init__(self, fs, signals, timescale='1 us'):
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self.writer = VCDWriter(fs, timescale=timescale, date=datetime.datetime.now().isoformat(), version=f"ST v1.0.2")
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self.skalars = {}
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self.arrays = {}
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self.strings = {}
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self.varnames = {}
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self._onvalues = {}
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self._onanyvalues = []
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self.timestamp = 0
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self.packets_dropped = 0
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for v in signals:
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hvar, vtype = v.split(":")
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hier, _, name = hvar.rpartition(".")
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arr = None
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s = vtype.split("[")
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if len(s) == 2:
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vtype, arr = s
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dsize = 32
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dtype = 'integer'
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match vtype:
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case 'event':
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dtype = 'event'
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dsize = 32
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case 'f32':
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dtype = 'real'
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dsize = 32
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case 'u32'|'s32':
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dtype = 'integer'
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dsize = 32
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case 'u16'|'s16':
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dtype = 'integer'
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dsize = 16
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case 'u8'|'s8':
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dtype = 'integer'
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dsize = 8
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case 'string':
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dtype = 'string'
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dsize = 8
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self.varnames[hvar] = hvar
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if arr is not None:
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elems = int(arr.rstrip("]"))
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vars = []
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for i in range(0, elems):
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vars.append(self.writer.register_var(hvar, f"{name}[{i}:{(i+1)}]", 'wire', size=dsize))
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self.arrays[hvar] = vars
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elif dtype == 'string':
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self.strings[hvar] = [self.writer.register_var(hier, name, dtype, size=dsize), ""]
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else:
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self.skalars[hvar] = self.writer.register_var(hier, name, dtype, size=dsize)
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def onvalue(self, tag, cb):
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self._onvalues[tag] = cb
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def onanyvalue(self, cb):
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self._onanyvalues.append(cb)
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def _emit(self, timestamp, tag, value, sub=None):
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for cb in self._onanyvalues:
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cb(timestamp, tag, value, sub)
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if tag in self._onvalues:
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self._onvalues[tag](timestamp, value, sub)
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def process(self, tag, value, sub, datatag):
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if datatag[0] == 'D':
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self.timestamp += value
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# array values
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elif datatag[0] == 'A':
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timestamp = self.timestamp
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try:
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self.writer.change(self.arrays[tag][sub], timestamp, value)
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except ValueError:
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print(f"### {timestamp:012} : {self.varnames[tag]}[{sub}] <= {value} [VAL_ERR] ", flush=True)
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self.packets_dropped += 1
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except writer.VCDPhaseError:
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print(f"### {timestamp:012} : {self.varnames[tag]}[{sub}] <= {value} [PHA_ERR] ", flush=True)
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self.packets_dropped += 1
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except:
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print(f"### {timestamp:012} : {self.varnames[tag]}[{sub}] <= {value} [ERR] ", flush=True)
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self.packets_dropped += 1
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self._emit(timestamp, tag, value, sub)
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elif datatag == 'S4':
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timestamp = self.timestamp
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# unpack
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for i in range(0,4):
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char = value >> (i*8) & 0xFF
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if char != 0:
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self.strings[tag][1] += chr(char)
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# sub of 1 indicates end of string
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if sub == 1:
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try:
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string = self.strings[tag][1]
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self.writer.change(self.strings[tag][0], timestamp, string)
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except ValueError:
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print(f"### {timestamp:012} : {self.varnames[tag]} <= \"{self.strings[tag][1]}\" [VAL_ERR] ", flush=True)
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self.packets_dropped += 1
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except writer.VCDPhaseError:
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print(f"### {timestamp:012} : {self.varnames[tag]} <= \"{self.strings[tag][1]}\" [PHA_ERR] ", flush=True)
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self.packets_dropped += 1
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except:
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print(f"### {timestamp:012} : {self.varnames[tag]} <= \"{self.strings[tag][1]}\" [ERR] ", flush=True)
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self.packets_dropped += 1
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self.strings[tag][1] = ""
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self._emit(timestamp, tag, string, None)
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# skalar values
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elif (datatag == 'EV') or (datatag[0] == 'V') or (datatag[0] == 'F'):
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timestamp = self.timestamp
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try:
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if self.skalars[tag].type == VarType.event:
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value = True
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elif datatag == 'F4':
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value = struct.unpack(">f", struct.pack(">L", value))[0]
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self.writer.change(self.skalars[tag], timestamp, value)
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except ValueError:
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print(f"### {timestamp:012} : {self.varnames[tag]} <= {value} [VAL_ERR] ", flush=True)
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self.packets_dropped += 1
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except writer.VCDPhaseError:
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print(f"### {timestamp:012} : {self.varnames[tag]} <= {value} [PHA_ERR] ", flush=True)
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self.packets_dropped += 1
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except:
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print(f"### {timestamp:012} : {self.varnames[tag]} <= {value} [ERR] ", flush=True)
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self.packets_dropped += 1
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self._emit(timestamp, tag, value, None)
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def main():
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parser = argparse.ArgumentParser(description="scans stdin for ST packets and dumps the values into a VCD file")
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parser.add_argument('-d', '--dump', type=str, required=True,
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help='output IEEE 1364-2005 Value Change Dump (vcd) file')
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parser.add_argument('-t', '--timescale', type=str, default="1 us",
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help='period of one timestamp tick')
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parser.add_argument('-n', '--noise', type=str, default=None,
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help='store the stdin data sans packets in this file')
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parser.add_argument('-s', '--source', type=str, required=True,
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help='source tree to scan for trace marks')
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parser.add_argument('--diagnostics', action=argparse.BooleanOptionalAction,
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help='add additional signals tracing internal state of ST')
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parser.add_argument('--trace', action=argparse.BooleanOptionalAction,
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help='write out every trace that arrives')
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parser.add_argument('--tui', action=argparse.BooleanOptionalAction,
|
|
help='enable TUI mode')
|
|
args = parser.parse_args()
|
|
|
|
print(header)
|
|
|
|
tracefile = args.dump
|
|
noisefile = args.noise
|
|
source_tree = args.source
|
|
timescale = args.timescale
|
|
enable_diag = args.diagnostics
|
|
enable_verbose_trace = args.trace
|
|
enable_tui = args.tui
|
|
|
|
predefined_signals = []
|
|
if enable_diag:
|
|
predefined_signals += [
|
|
'ST.BufferItems:u32',
|
|
'ST.BufferHealth:u8',
|
|
'ST.CompressionLevel:u8',
|
|
'ST.CompressionTime:u32',
|
|
'ST.RenderTime:u32',
|
|
'ST.ItemsSent:u32'
|
|
]
|
|
|
|
signals, signals_valid = scan_for_signals(source_tree, predefined_signals)
|
|
|
|
if not signals_valid:
|
|
return
|
|
|
|
signals.sort()
|
|
tags = [k.split(":")[0] for k in signals]
|
|
|
|
dfile = open(tracefile, 'w', encoding='utf-8')
|
|
|
|
vcd_sink = VcdSink(dfile, signals, timescale)
|
|
retagger = Retagger(vcd_sink.process, tags)
|
|
packet_filter = Filter(retagger.process)
|
|
|
|
nfile = None
|
|
if noisefile:
|
|
nfile = open(noisefile, 'wb')
|
|
packet_filter.onnoise(lambda b: nfile.write(b.to_bytes(1)))
|
|
|
|
print("Signals:")
|
|
for var in signals:
|
|
print(f" - {var}")
|
|
print()
|
|
|
|
if enable_tui:
|
|
tui_record(signals, packet_filter, vcd_sink, enable_verbose_trace)
|
|
else:
|
|
record(packet_filter, vcd_sink, enable_verbose_trace)
|
|
|
|
vcd_sink.writer.close()
|
|
dfile.close()
|
|
if nfile:
|
|
nfile.close()
|
|
|
|
print("Summary:")
|
|
packet_count = packet_filter.packet_counter
|
|
drop_count = packet_filter.packets_dropped + vcd_sink.packets_dropped
|
|
trace_size = human_readable_size(os.path.getsize(tracefile))
|
|
print(f" - Packets received: {packet_count}")
|
|
print(f" - Packets dropped: {drop_count}")
|
|
print(f" - Trace file: {tracefile}")
|
|
print(f" - Trace size: {trace_size}")
|
|
|
|
|
|
def record(packet_filter, vcd_sink, enable_verbose_trace):
|
|
packet_filter.onnoise(lambda b: print(chr(b), end="", flush=True))
|
|
|
|
def onval(timestamp, tag, value, sub):
|
|
if sub is not None:
|
|
print(f"### {timestamp:012} : {tag}[{sub}] <= {value}")
|
|
else:
|
|
print(f"### {timestamp:012} : {tag} <= {value}")
|
|
|
|
if enable_verbose_trace:
|
|
vcd_sink.onanyvalue(onval)
|
|
|
|
print(" === BEGIN NOISE ===")
|
|
try:
|
|
for bstr in sys.stdin.buffer:
|
|
for b in bstr:
|
|
packet_filter.process(b)
|
|
except KeyboardInterrupt:
|
|
pass
|
|
|
|
print()
|
|
print(" === END NOISE ===")
|
|
print()
|
|
|
|
class NoiseLineBuffer:
|
|
def __init__(self, online):
|
|
self.buffer = ""
|
|
self.online = online
|
|
|
|
def add(self, b):
|
|
t = chr(b)
|
|
if t == "\n":
|
|
self.online(self.buffer)
|
|
self.buffer = ""
|
|
else:
|
|
self.buffer += t
|
|
|
|
class TotalMaximumProgressUpdater:
|
|
def __init__(self, progress, progress_task):
|
|
self.progress = progress
|
|
self.progress_task = progress_task
|
|
self.maximum = 0
|
|
|
|
def update(self, value):
|
|
if value > self.maximum:
|
|
self.maximum = value
|
|
self.progress.update(self.progress_task, total=self.maximum)
|
|
self.progress.update(self.progress_task, completed=value, visible=True)
|
|
|
|
def tui_record(signals, packet_filter, vcd_sink, enable_verbose_trace):
|
|
try:
|
|
from rich.console import Console
|
|
from rich.text import Text
|
|
from rich.layout import Layout
|
|
from rich.progress import Progress, TextColumn, BarColumn, TaskProgressColumn, MofNCompleteColumn
|
|
from rich.live import Live
|
|
from rich.align import Align
|
|
from rich.table import Table
|
|
except:
|
|
print("error: TUI mode requires the rich package")
|
|
exit()
|
|
|
|
if enable_verbose_trace:
|
|
print("warning: verbose trace is not avaialble in TUI mode")
|
|
print()
|
|
|
|
console = Console()
|
|
noise_buffer = NoiseLineBuffer(lambda text: console.print(f"[blue]{text}"))
|
|
trace_text = Text("")
|
|
|
|
# set up progress bars
|
|
progress_colums = [
|
|
TextColumn("[progress.description]{task.description}"),
|
|
BarColumn(bar_width=80, complete_style="gold3", finished_style="red"),
|
|
TaskProgressColumn(),
|
|
MofNCompleteColumn()
|
|
|
|
]
|
|
diag_progress = Progress(*progress_colums, transient=True, auto_refresh=False, refresh_per_second=1)
|
|
buffer_health = diag_progress.add_task("[green]Buffer Health", total=255, visible=False)
|
|
buffer_items = diag_progress.add_task("[green]Buffer Items", visible=False)
|
|
items_sent = diag_progress.add_task("[blue]Items Sent", total=1024, visible=False)
|
|
render_time = diag_progress.add_task("[blue]Render Time", total=1024, visible=False)
|
|
comp_lvl = diag_progress.add_task("[yellow]Compression Level", total=100, visible=False)
|
|
comp_time = diag_progress.add_task("[yellow]Compression Time", total=100, visible=False)
|
|
|
|
buffer_items_tm = TotalMaximumProgressUpdater(diag_progress, buffer_items)
|
|
items_sent_tm = TotalMaximumProgressUpdater(diag_progress, items_sent)
|
|
render_time_tm = TotalMaximumProgressUpdater(diag_progress, render_time)
|
|
comp_time_tm = TotalMaximumProgressUpdater(diag_progress, comp_time)
|
|
|
|
# set up table layout and signal view
|
|
signal_values = {name.split(":")[0]:None for name in signals}
|
|
|
|
|
|
def on_any_value(time,signal,value,sub):
|
|
signal_values[signal].plain(value)
|
|
|
|
vcd_sink.onanyvalue(on_any_value)
|
|
|
|
def generate_table(diag_progress, signal_values):
|
|
grid = Table.grid(expand=True)
|
|
grid.add_column(justify="left")
|
|
grid.add_column(justify="left")
|
|
grid.add_column(justify="left")
|
|
grid.add_row(None) # this empty row is there to not leave behind a render on interrupt
|
|
|
|
for sig in signals:
|
|
name, sigtype = sig.split(":")
|
|
value = signal_values[name]
|
|
text = Text("X" if value is None else value, style="red" if value is None else "green")
|
|
grid.add_row(sigtype, name, text)
|
|
|
|
grid.add_row("Diagnostics", diag_progress)
|
|
return grid
|
|
|
|
with Live(console=console, transient=True) as live_status:
|
|
vcd_sink.onvalue("ST.BufferHealth", lambda _,value,sub: diag_progress.update(buffer_health, completed=value, visible=True))
|
|
vcd_sink.onvalue("ST.BufferItems", lambda _,value,sub: buffer_items_tm.update(value))
|
|
vcd_sink.onvalue("ST.ItemsSent", lambda _,value,sub: items_sent_tm.update(value))
|
|
vcd_sink.onvalue("ST.CompressionLevel", lambda _,value,sub: diag_progress.update(comp_lvl, completed=value, visible=True))
|
|
vcd_sink.onvalue("ST.CompressionTime", lambda _,value,sub: comp_time_tm.update(value))
|
|
vcd_sink.onvalue("ST.RenderTime", lambda _,value,sub: render_time_tm.update(value))
|
|
|
|
packet_filter.onnoise(noise_buffer.add)
|
|
|
|
try:
|
|
for bstr in sys.stdin.buffer:
|
|
for b in bstr:
|
|
packet_filter.process(b)
|
|
live_status.update(generate_table(diag_progress, signal_values))
|
|
except KeyboardInterrupt:
|
|
diag_progress.stop()
|
|
|
|
print()
|
|
|
|
if __name__ == '__main__':
|
|
main()
|