75 lines
1.9 KiB
Python
75 lines
1.9 KiB
Python
import socket
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import time
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import random
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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header = [
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0, 0, # buffer length in 16bit words (1, 0) == 1, (0, 1) == 256
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0, 0x80, # buffer type (probably should be 0)
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21, 0, # header length
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0, 0, # buffer number
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0, 0, # run id
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0x3, # status
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0, # id of sending module
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0, 0, # timestamp low
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0, 0, # timestamp mid
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0, 0, # timestamp high
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] + [0, 0] * 12 # parameters
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data = [
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0,
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0,
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0,
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0,
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0,
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0
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]
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start_time = time.time_ns() // 100
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while True:
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# update buffer number
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header[6] = (header[6] + 1) % 0xff
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header[7] = (header[7] + (header[6] == 0)) % 0xff
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# update timestamp
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base_timestamp = time.time_ns() // 100 - start_time
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t_low = base_timestamp & 0xffff
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t_mid = (base_timestamp >> 16) & 0xffff
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t_high = (base_timestamp >> 32) & 0xffff
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header[12] = t_low & 0xff
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header[13] = t_low >> 8
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header[14] = t_mid & 0xff
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header[15] = t_mid >> 8
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header[16] = t_high & 0xff
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header[17] = t_high >> 8
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num_events = random.randint(0, 243)
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# update buffer length
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buffer_length = 21 + num_events * 3
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header[0] = buffer_length & 0xff
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header[1] = (buffer_length >> 8) & 0xff
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tosend = list(header)
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for i in range(num_events):
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d = list(data)
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# set monitor
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d[5] = (1 << 7) | random.randint(0,3)
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# update trigger timestamp
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event_timestamp = (time.time_ns() // 100) - base_timestamp
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d[0] = event_timestamp & 0xff
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d[1] = (event_timestamp >> 8) & 0xff
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d[2] = (event_timestamp >> 16) & 0x07
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tosend += d
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sock.sendto(bytes(tosend), ('127.0.0.1', 54321))
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mv = memoryview(bytes(header)).cast('H')
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print(f'Sent packet {mv[3]} with {num_events} events {base_timestamp}')
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time.sleep(1)
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