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CubeSatSim/frequency.py

864 lines
51 KiB

#!/usr/bin/env python
#import subprocess
import time
from time import sleep
#import os
import sys
from os import system
def check_frequency():
global tx_doppler_freq_hz
global rx_doppler_freq_hz
tx_OK = False
rx_OK = False
if tx_doppler_freq_hz > 450000000:
tx_doppler_freq_hz = 435200000
elif (tx_doppler_freq_hz < 420000000) and (tx_doppler_freq_hz > 148000000):
tx_doppler_freq_hz = 434700000
elif (tx_doppler_freq_hz < 144000000):
tx_doppler_freq_hz = 434600000
else:
tx_OK = True
if rx_doppler_freq_hz > 450000000:
rx_doppler_freq_hz = 435200000
elif (rx_doppler_freq_hz < 420000000) and (rx_doppler_freq_hz > 148000000):
rx_doppler_freq_hz = 434700000
elif (rx_doppler_freq_hz < 144000000):
rx_doppler_freq_hz = 434600000
else:
rx_OK = True
if (tx_OK != True) or (rx_OK != True):
print("Error - frequency out of range!")
iss_doppler_passes = {
88: [
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{"time_sec": 32, "doppler_434_khz": 9981, "doppler_144_khz": 3327},
{"time_sec": 33, "doppler_434_khz": 9980, "doppler_144_khz": 3327},
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{"time_sec": 43, "doppler_434_khz": 9975, "doppler_144_khz": 3325},
{"time_sec": 44, "doppler_434_khz": 9974, "doppler_144_khz": 3325},
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{"time_sec": 474, "doppler_434_khz": -9478, "doppler_144_khz": -3159},
{"time_sec": 475, "doppler_434_khz": -9486, "doppler_144_khz": -3161},
{"time_sec": 476, "doppler_434_khz": -9494, "doppler_144_khz": -3164},
{"time_sec": 477, "doppler_434_khz": -9501, "doppler_144_khz": -3166},
{"time_sec": 478, "doppler_434_khz": -9516, "doppler_144_khz": -3171},
{"time_sec": 479, "doppler_434_khz": -9523, "doppler_144_khz": -3174},
{"time_sec": 480, "doppler_434_khz": -9530, "doppler_144_khz": -3176},
{"time_sec": 481, "doppler_434_khz": -9537, "doppler_144_khz": -3178},
{"time_sec": 482, "doppler_434_khz": -9551, "doppler_144_khz": -3183},
{"time_sec": 483, "doppler_434_khz": -9557, "doppler_144_khz": -3185},
{"time_sec": 484, "doppler_434_khz": -9564, "doppler_144_khz": -3187},
{"time_sec": 485, "doppler_434_khz": -9570, "doppler_144_khz": -3189},
{"time_sec": 486, "doppler_434_khz": -9583, "doppler_144_khz": -3194},
{"time_sec": 487, "doppler_434_khz": -9589, "doppler_144_khz": -3196},
{"time_sec": 488, "doppler_434_khz": -9595, "doppler_144_khz": -3198},
{"time_sec": 489, "doppler_434_khz": -9601, "doppler_144_khz": -3200},
{"time_sec": 490, "doppler_434_khz": -9607, "doppler_144_khz": -3202},
{"time_sec": 491, "doppler_434_khz": -9619, "doppler_144_khz": -3206},
{"time_sec": 492, "doppler_434_khz": -9625, "doppler_144_khz": -3208},
{"time_sec": 493, "doppler_434_khz": -9630, "doppler_144_khz": -3209},
{"time_sec": 494, "doppler_434_khz": -9636, "doppler_144_khz": -3211},
{"time_sec": 495, "doppler_434_khz": -9642, "doppler_144_khz": -3213},
{"time_sec": 496, "doppler_434_khz": -9652, "doppler_144_khz": -3217},
{"time_sec": 497, "doppler_434_khz": -9658, "doppler_144_khz": -3219},
{"time_sec": 498, "doppler_434_khz": -9663, "doppler_144_khz": -3220},
{"time_sec": 499, "doppler_434_khz": -9668, "doppler_144_khz": -3222},
{"time_sec": 500, "doppler_434_khz": -9678, "doppler_144_khz": -3225},
{"time_sec": 501, "doppler_434_khz": -9683, "doppler_144_khz": -3227},
{"time_sec": 502, "doppler_434_khz": -9687, "doppler_144_khz": -3228},
{"time_sec": 503, "doppler_434_khz": -9692, "doppler_144_khz": -3230},
{"time_sec": 504, "doppler_434_khz": -9697, "doppler_144_khz": -3232},
{"time_sec": 505, "doppler_434_khz": -9706, "doppler_144_khz": -3235},
{"time_sec": 506, "doppler_434_khz": -9710, "doppler_144_khz": -3236},
{"time_sec": 507, "doppler_434_khz": -9715, "doppler_144_khz": -3238},
{"time_sec": 508, "doppler_434_khz": -9719, "doppler_144_khz": -3239},
{"time_sec": 509, "doppler_434_khz": -9727, "doppler_144_khz": -3242},
{"time_sec": 510, "doppler_434_khz": -9732, "doppler_144_khz": -3243},
{"time_sec": 511, "doppler_434_khz": -9736, "doppler_144_khz": -3245},
{"time_sec": 512, "doppler_434_khz": -9740, "doppler_144_khz": -3246},
{"time_sec": 513, "doppler_434_khz": -9747, "doppler_144_khz": -3248},
{"time_sec": 514, "doppler_434_khz": -9751, "doppler_144_khz": -3250},
{"time_sec": 515, "doppler_434_khz": -9755, "doppler_144_khz": -3251},
{"time_sec": 516, "doppler_434_khz": -9759, "doppler_144_khz": -3252},
{"time_sec": 517, "doppler_434_khz": -9763, "doppler_144_khz": -3254},
{"time_sec": 518, "doppler_434_khz": -9770, "doppler_144_khz": -3256},
{"time_sec": 519, "doppler_434_khz": -9773, "doppler_144_khz": -3257},
{"time_sec": 520, "doppler_434_khz": -9777, "doppler_144_khz": -3258},
{"time_sec": 521, "doppler_434_khz": -9780, "doppler_144_khz": -3259},
{"time_sec": 522, "doppler_434_khz": -9787, "doppler_144_khz": -3262},
{"time_sec": 523, "doppler_434_khz": -9791, "doppler_144_khz": -3263},
{"time_sec": 524, "doppler_434_khz": -9794, "doppler_144_khz": -3264},
{"time_sec": 525, "doppler_434_khz": -9797, "doppler_144_khz": -3265},
{"time_sec": 526, "doppler_434_khz": -9800, "doppler_144_khz": -3266},
{"time_sec": 527, "doppler_434_khz": -9807, "doppler_144_khz": -3268},
{"time_sec": 528, "doppler_434_khz": -9810, "doppler_144_khz": -3269},
{"time_sec": 529, "doppler_434_khz": -9813, "doppler_144_khz": -3270},
{"time_sec": 530, "doppler_434_khz": -9816, "doppler_144_khz": -3271},
{"time_sec": 531, "doppler_434_khz": -9822, "doppler_144_khz": -3273},
{"time_sec": 532, "doppler_434_khz": -9825, "doppler_144_khz": -3274},
{"time_sec": 533, "doppler_434_khz": -9827, "doppler_144_khz": -3275},
{"time_sec": 534, "doppler_434_khz": -9830, "doppler_144_khz": -3276},
{"time_sec": 535, "doppler_434_khz": -9833, "doppler_144_khz": -3277},
{"time_sec": 536, "doppler_434_khz": -9838, "doppler_144_khz": -3279},
{"time_sec": 537, "doppler_434_khz": -9841, "doppler_144_khz": -3280},
{"time_sec": 538, "doppler_434_khz": -9843, "doppler_144_khz": -3280},
{"time_sec": 539, "doppler_434_khz": -9846, "doppler_144_khz": -3281},
{"time_sec": 540, "doppler_434_khz": -9851, "doppler_144_khz": -3283},
{"time_sec": 541, "doppler_434_khz": -9853, "doppler_144_khz": -3284},
{"time_sec": 542, "doppler_434_khz": -9856, "doppler_144_khz": -3285},
{"time_sec": 543, "doppler_434_khz": -9858, "doppler_144_khz": -3285},
{"time_sec": 544, "doppler_434_khz": -9861, "doppler_144_khz": -3286},
{"time_sec": 545, "doppler_434_khz": -9865, "doppler_144_khz": -3288},
{"time_sec": 546, "doppler_434_khz": -9867, "doppler_144_khz": -3288},
{"time_sec": 547, "doppler_434_khz": -9870, "doppler_144_khz": -3289},
{"time_sec": 548, "doppler_434_khz": -9872, "doppler_144_khz": -3290},
{"time_sec": 549, "doppler_434_khz": -9876, "doppler_144_khz": -3291},
{"time_sec": 550, "doppler_434_khz": -9878, "doppler_144_khz": -3292},
{"time_sec": 551, "doppler_434_khz": -9880, "doppler_144_khz": -3293},
{"time_sec": 552, "doppler_434_khz": -9882, "doppler_144_khz": -3293},
{"time_sec": 553, "doppler_434_khz": -9886, "doppler_144_khz": -3295},
{"time_sec": 554, "doppler_434_khz": -9888, "doppler_144_khz": -3295},
{"time_sec": 555, "doppler_434_khz": -9890, "doppler_144_khz": -3296},
{"time_sec": 556, "doppler_434_khz": -9892, "doppler_144_khz": -3297},
{"time_sec": 557, "doppler_434_khz": -9894, "doppler_144_khz": -3297},
{"time_sec": 558, "doppler_434_khz": -9898, "doppler_144_khz": -3299},
{"time_sec": 559, "doppler_434_khz": -9899, "doppler_144_khz": -3299},
{"time_sec": 560, "doppler_434_khz": -9901, "doppler_144_khz": -3300},
{"time_sec": 561, "doppler_434_khz": -9903, "doppler_144_khz": -3300},
{"time_sec": 562, "doppler_434_khz": -9906, "doppler_144_khz": -3301},
{"time_sec": 563, "doppler_434_khz": -9908, "doppler_144_khz": -3302},
{"time_sec": 564, "doppler_434_khz": -9910, "doppler_144_khz": -3303},
{"time_sec": 565, "doppler_434_khz": -9911, "doppler_144_khz": -3303},
{"time_sec": 566, "doppler_434_khz": -9913, "doppler_144_khz": -3304},
{"time_sec": 567, "doppler_434_khz": -9916, "doppler_144_khz": -3305},
{"time_sec": 568, "doppler_434_khz": -9918, "doppler_144_khz": -3305},
{"time_sec": 569, "doppler_434_khz": -9919, "doppler_144_khz": -3306},
{"time_sec": 570, "doppler_434_khz": -9921, "doppler_144_khz": -3306},
{"time_sec": 571, "doppler_434_khz": -9923, "doppler_144_khz": -3307},
{"time_sec": 572, "doppler_434_khz": -9925, "doppler_144_khz": -3308},
{"time_sec": 573, "doppler_434_khz": -9926, "doppler_144_khz": -3308},
{"time_sec": 574, "doppler_434_khz": -9928, "doppler_144_khz": -3309},
{"time_sec": 575, "doppler_434_khz": -9930, "doppler_144_khz": -3309},
{"time_sec": 576, "doppler_434_khz": -9932, "doppler_144_khz": -3310},
{"time_sec": 577, "doppler_434_khz": -9933, "doppler_144_khz": -3310},
{"time_sec": 578, "doppler_434_khz": -9934, "doppler_144_khz": -3311},
{"time_sec": 579, "doppler_434_khz": -9936, "doppler_144_khz": -3311},
{"time_sec": 580, "doppler_434_khz": -9938, "doppler_144_khz": -3312},
{"time_sec": 581, "doppler_434_khz": -9939, "doppler_144_khz": -3312},
{"time_sec": 582, "doppler_434_khz": -9940, "doppler_144_khz": -3313},
{"time_sec": 583, "doppler_434_khz": -9942, "doppler_144_khz": -3313},
{"time_sec": 584, "doppler_434_khz": -9944, "doppler_144_khz": -3314},
{"time_sec": 585, "doppler_434_khz": -9945, "doppler_144_khz": -3314},
{"time_sec": 586, "doppler_434_khz": -9946, "doppler_144_khz": -3315},
{"time_sec": 587, "doppler_434_khz": -9947, "doppler_144_khz": -3315},
{"time_sec": 588, "doppler_434_khz": -9949, "doppler_144_khz": -3316},
{"time_sec": 589, "doppler_434_khz": -9950, "doppler_144_khz": -3316},
{"time_sec": 590, "doppler_434_khz": -9951, "doppler_144_khz": -3316},
{"time_sec": 591, "doppler_434_khz": -9952, "doppler_144_khz": -3317},
{"time_sec": 592, "doppler_434_khz": -9953, "doppler_144_khz": -3317},
{"time_sec": 593, "doppler_434_khz": -9955, "doppler_144_khz": -3318},
{"time_sec": 594, "doppler_434_khz": -9956, "doppler_144_khz": -3318},
{"time_sec": 595, "doppler_434_khz": -9957, "doppler_144_khz": -3318},
{"time_sec": 596, "doppler_434_khz": -9958, "doppler_144_khz": -3319},
{"time_sec": 597, "doppler_434_khz": -9960, "doppler_144_khz": -3319},
{"time_sec": 598, "doppler_434_khz": -9961, "doppler_144_khz": -3320},
{"time_sec": 599, "doppler_434_khz": -9961, "doppler_144_khz": -3320},
{"time_sec": 600, "doppler_434_khz": -9962, "doppler_144_khz": -3320},
{"time_sec": 601, "doppler_434_khz": -9963, "doppler_144_khz": -3320},
{"time_sec": 602, "doppler_434_khz": -9965, "doppler_144_khz": -3321},
{"time_sec": 603, "doppler_434_khz": -9965, "doppler_144_khz": -3321},
{"time_sec": 604, "doppler_434_khz": -9966, "doppler_144_khz": -3321},
{"time_sec": 605, "doppler_434_khz": -9967, "doppler_144_khz": -3322},
{"time_sec": 606, "doppler_434_khz": -9968, "doppler_144_khz": -3322},
{"time_sec": 607, "doppler_434_khz": -9969, "doppler_144_khz": -3322},
{"time_sec": 608, "doppler_434_khz": -9970, "doppler_144_khz": -3323},
{"time_sec": 609, "doppler_434_khz": -9970, "doppler_144_khz": -3323},
{"time_sec": 610, "doppler_434_khz": -9972, "doppler_144_khz": -3323},
{"time_sec": 611, "doppler_434_khz": -9972, "doppler_144_khz": -3323},
{"time_sec": 612, "doppler_434_khz": -9973, "doppler_144_khz": -3324},
{"time_sec": 613, "doppler_434_khz": -9974, "doppler_144_khz": -3324},
{"time_sec": 614, "doppler_434_khz": -9974, "doppler_144_khz": -3324},
{"time_sec": 615, "doppler_434_khz": -9975, "doppler_144_khz": -3324},
{"time_sec": 616, "doppler_434_khz": -9976, "doppler_144_khz": -3325},
{"time_sec": 617, "doppler_434_khz": -9976, "doppler_144_khz": -3325},
{"time_sec": 618, "doppler_434_khz": -9977, "doppler_144_khz": -3325},
{"time_sec": 619, "doppler_434_khz": -9978, "doppler_144_khz": -3325},
{"time_sec": 620, "doppler_434_khz": -9978, "doppler_144_khz": -3325},
{"time_sec": 621, "doppler_434_khz": -9979, "doppler_144_khz": -3326},
{"time_sec": 622, "doppler_434_khz": -9979, "doppler_144_khz": -3326},
{"time_sec": 623, "doppler_434_khz": -9980, "doppler_144_khz": -3326},
{"time_sec": 624, "doppler_434_khz": -9981, "doppler_144_khz": -3326},
{"time_sec": 625, "doppler_434_khz": -9981, "doppler_144_khz": -3326},
{"time_sec": 626, "doppler_434_khz": -9982, "doppler_144_khz": -3327},
{"time_sec": 627, "doppler_434_khz": -9982, "doppler_144_khz": -3327},
{"time_sec": 628, "doppler_434_khz": -9983, "doppler_144_khz": -3327},
{"time_sec": 629, "doppler_434_khz": -9983, "doppler_144_khz": -3327},
{"time_sec": 630, "doppler_434_khz": -9984, "doppler_144_khz": -3327},
{"time_sec": 631, "doppler_434_khz": -9984, "doppler_144_khz": -3327},
{"time_sec": 632, "doppler_434_khz": -9985, "doppler_144_khz": -3328},
{"time_sec": 633, "doppler_434_khz": -9985, "doppler_144_khz": -3328},
{"time_sec": 634, "doppler_434_khz": -9985, "doppler_144_khz": -3328},
{"time_sec": 635, "doppler_434_khz": -9986, "doppler_144_khz": -3328},
{"time_sec": 636, "doppler_434_khz": -9986, "doppler_144_khz": -3328},
{"time_sec": 637, "doppler_434_khz": -9986, "doppler_144_khz": -3328},
{"time_sec": 638, "doppler_434_khz": -9987, "doppler_144_khz": -3328},
{"time_sec": 639, "doppler_434_khz": -9987, "doppler_144_khz": -3328},
{"time_sec": 640, "doppler_434_khz": -9987, "doppler_144_khz": -3328},
{"time_sec": 641, "doppler_434_khz": -9988, "doppler_144_khz": -3329},
{"time_sec": 642, "doppler_434_khz": -9988, "doppler_144_khz": -3329},
{"time_sec": 643, "doppler_434_khz": -9988, "doppler_144_khz": -3329},
{"time_sec": 644, "doppler_434_khz": -9988, "doppler_144_khz": -3329},
{"time_sec": 645, "doppler_434_khz": -9988, "doppler_144_khz": -3329},
{"time_sec": 646, "doppler_434_khz": -9989, "doppler_144_khz": -3329},
{"time_sec": 647, "doppler_434_khz": -9989, "doppler_144_khz": -3329},
{"time_sec": 648, "doppler_434_khz": -9989, "doppler_144_khz": -3329},
{"time_sec": 649, "doppler_434_khz": -9989, "doppler_144_khz": -3329},
{"time_sec": 650, "doppler_434_khz": -9990, "doppler_144_khz": -3329},
{"time_sec": 651, "doppler_434_khz": -9990, "doppler_144_khz": -3329},
{"time_sec": 652, "doppler_434_khz": -9990, "doppler_144_khz": -3329},
{"time_sec": 653, "doppler_434_khz": -9990, "doppler_144_khz": -3329},
{"time_sec": 654, "doppler_434_khz": -9990, "doppler_144_khz": -3329},
{"time_sec": 655, "doppler_434_khz": -9990, "doppler_144_khz": -3329},
{"time_sec": 656, "doppler_434_khz": -9990, "doppler_144_khz": -3329},
{"time_sec": 657, "doppler_434_khz": -9990, "doppler_144_khz": -3329},
{"time_sec": 658, "doppler_434_khz": -9990, "doppler_144_khz": -3329},
{"time_sec": 659, "doppler_434_khz": -9990, "doppler_144_khz": -3329},
{"time_sec": 660, "doppler_434_khz": -9990, "doppler_144_khz": -3329},
{"time_sec": 661, "doppler_434_khz": -9990, "doppler_144_khz": -3329}
]
}
try:
tx_value = '0'
rx_value = '0'
sq = '0'
tx = '434.9000'
rx = '435.0000'
txr = '144.9000'
sim_mode = False
sim_config = False
doppler_mode = "off"
debug_mode = True
try:
file = open("/home/pi/CubeSatSim/.mode")
mode = file.read(1)
except:
mode = 'f'
if (debug_mode == 1):
print("Can't open .mode file, defaulting to FSK")
file.close()
print("Mode is: ")
print(mode)
try:
file = open("/home/pi/CubeSatSim/sim.cfg")
config = file.readline().split()
if len(config) > 6:
txf = float(config[6])
tx = "{:.4f}".format(txf)
if (mode == 'e'):
txrf = (txf - 290.0) # - 0.1 # Cross Band Repeater mode transmit frequency in 2m band
txr = "{:.4f}".format(txrf)
print("Transmit frequency: ",txr)
else:
print("Transmit frequency: ",tx)
if len(config) > 7:
rxf = float(config[7])
rx = "{:.4f}".format(rxf)
print(rx)
if len(config) > 9:
rxpl = float(config[9])
# print(rxpl)
# print( "{:.0f}".format(rxpl))
rxpl_value = "{:.0f}".format(rxpl)
print(rxpl_value)
if len(config) > 10:
txpl = float(config[10])
# print(txpl)
# print( "{:.0f}".format(txpl))
txpl_value = "{:.0f}".format(txpl)
print(txpl_value)
if len(config) > 13:
if config[13] == 'sim':
doppler_mode = 'sim'
print("Simulated Doppler frequency shift is enabled.")
elif config[13] == 'rig':
doppler_mode = 'rig'
print("rigctl Doppler frequency shift is enabled.")
else:
doppler_mode = 'off'
print("Doppler frequency shift is disabled.")
else:
doppler_mode = 'off'
print("Doppler frequency shift is disabled.")
print(config)
print
# print(callsign)
print(sq)
# if sq == '8':
# print("squelch set to 8, no command input!")
# no_command = True
# else:
no_command = False
print(no_command)
except Exception as e:
print(f"An error occurred: {e}")
if (debug_mode == 1):
print("Can't read sim.cfg file")
file.close()
except Exception as e:
print(f"An error occurred: {e}")
if (doppler_mode == 'off'):
tx_freq_hz = txf * 1e6
rx_freq_hz = rxf * 1e6
check_frequency()
print("writing sim.cfg frequency to frequency.txt")
with open("/home/pi/CubeSatSim/frequency.txt", "w") as file:
file.write(f"{tx_freq_hz:.0f} {rx_freq_hz:.0f}")
while True:
sleep(1)
if (doppler_mode == 'sim'):
print("Sim mode")
if (mode == 'e'):
tx_doppler_start_hz = txrf * 1e6
else:
tx_doppler_start_hz = txf * 1e6
tx_doppler_shift_hz = 0
print(f"Tx center frequency: {tx_doppler_start_hz}")
rx_doppler_start_hz = rxf * 1e6
rx_doppler_shift_hz = 0
print(f"Rx center frequency: {rx_doppler_start_hz}")
TARGET_PASS = 88 # Maximum elevation profile
doppler_table = iss_doppler_passes[TARGET_PASS]
print(f"Pass Max Elevation: {TARGET_PASS}°")
start_time = time.perf_counter()
current_index = 0;
while True:
relative_time = (time.perf_counter() - start_time)
# index = int(relative_time/10) % 37
index = int(relative_time)
if (index > current_index):
current_index = index
index = index % 661
print(f"relative time: {relative_time:.1f} seconds after start is AOS index: {index}")
table_row = doppler_table[index]
rx_doppler_shift_hz = table_row["doppler_434_khz"] # * 1000
if (mode == 'e'):
tx_doppler_shift_hz = table_row["doppler_144_khz"] # * 1000
else:
tx_doppler_shift_hz = rx_doppler_shift_hz
tx_doppler_freq_hz = tx_doppler_start_hz + tx_doppler_shift_hz
rx_doppler_freq_hz = rx_doppler_start_hz + rx_doppler_shift_hz
check_frequency()
print(f"Tx Doppler shift: {tx_doppler_freq_hz:.0f}")
print(f"Rx Doppler shift: {rx_doppler_freq_hz:.0f}")
with open("/home/pi/CubeSatSim/frequency.txt", "w") as file:
file.write(f"{tx_doppler_freq_hz:.0f} {rx_doppler_freq_hz:.0f}")
sleep(1)
if (doppler_mode == 'rig'):
print("rig mode")
while True:
system("sudo killall -9 ft857d &>/dev/null")
system("udo killall -9 socat &>/dev/null")
system("sudo killall -9 rigctld &>/dev/null")
print("Starting virtual serial ports /tmp/vttyA and /tmp/vttyB")
system("socat -d -d PTY,raw,echo=0,link=/tmp/vttyA PTY,raw,echo=0,link=/tmp/vttyB &")
sleep(1.0)
print("Starting CubeSatSim FT857 emulation")
system("/home/pi/FT857d/examples/FT857d/ft857d &")
sleep(1.0)
print("Starting rigctl emulating FT857 rig using virtual serial port /tmp/vttyB")
system("rigctld -m 1022 -r /tmp/vttyB -t 4532 -vvv")
print("rigctld ended")

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