53 lines
2.8 KiB
Python
Executable File
53 lines
2.8 KiB
Python
Executable File
#!/usr/bin/env python
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from lorawan_toa_cal import get_toa, parse_args
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if __name__ == "__main__" :
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opt = parse_args()
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if opt.sf != "FSK":
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ret = get_toa(opt.n_size, opt.n_sf, n_bw=opt.n_bw,
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enable_auto_ldro=opt.enable_auto_ldro,
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enable_ldro=opt.enable_ldro,
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enable_eh=opt.enable_eh, enable_crc=opt.enable_crc,
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n_cr=opt.n_cr, n_preamble=opt.n_preamble)
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ret["duty_cycle"] = opt.n_duty_cycle
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ret["t_cycle"] = (ret["t_packet"]/1000.)*(100./ret["duty_cycle"])
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ret["max_packets_day"] = 86400./ret["t_cycle"]
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if opt.f_verbose:
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print("PHY payload size : %d Bytes" % ret["phy_pl_size"])
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print("MAC payload size : %d Bytes" % ret["mac_pl_size"])
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print("Spreading Factor : %d" % ret["sf"])
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print("Band width : %d kHz" % ret["bw"])
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print("Low data rate opt. : %s" % ret["ldro"])
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print("Explicit header : %s" % ret["eh"])
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print("CR (coding rate) : %d (4/%d)" % (ret["cr"], 4+ret["cr"]))
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print("Symbol Rate : %.3f symbol/s" % ret["r_sym"])
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print("Symbol Time : %.3f msec/symbol" % ret["t_sym"])
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print("Preamble size : %d symbols" % ret["n_preamble"])
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print("Packet symbol size : %d symbols" % ret["n_sym_payload"])
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print("Preamble ToA : %.3f msec" % ret["t_preamble"])
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print("Payload ToA : %.3f msec" % ret["t_payload"])
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print("Time on Air : %.3f msec" % ret["t_packet"])
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print("RAW data rate : %.3f bps" % ret["raw_datarate"])
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print("Duty Cycle : %d %%" % ret["duty_cycle"])
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print("Min span of a cycle : %.3f sec" % ret["t_cycle"])
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print("Max Frames per day : %d frames" % ret["max_packets_day"])
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if opt.debug_level:
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ret0 = get_toa(0, opt.n_sf, n_bw=opt.n_bw,
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enable_auto_ldro=opt.enable_auto_ldro,
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enable_ldro=opt.enable_ldro,
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enable_eh=opt.enable_eh, enable_crc=opt.enable_crc,
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n_cr=opt.n_cr, n_preamble=opt.n_preamble)
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print("PHY PL=0 ToA : %.3f msec" % (ret0["t_packet"]))
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# preamble=8 cr=1? payload-len=7? crc=16 (payload) payload-crc=16
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# =? 48 ==> 6 bytes ?
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t0 = (ret["t_packet"]-ret0["t_packet"])/1000.
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print("PHY fr.dr.(48b) 7:15: %.3f bps" % ((8.*opt.n_size+48)/t0))
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print("MAC frame DR : %.3f bps" % ((8.*(opt.n_size))/t0))
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print("before ceil(x) : %.3f" % ret["v_ceil"])
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else:
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print("%.3f" % ret["t_packet"])
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else: # FSK
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raise NotImplementedError
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pass
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