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port_probe.py : tx side reading data from probe and doing HT calculations

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Signed-off-by: Chuck SmileyRekiere <chuck.smileyrekiere@candelatech.com>
This commit is contained in:
Chuck SmileyRekiere
2021-10-26 14:48:53 -06:00
parent 75245b56fb
commit d582c8399a
1 changed files with 35 additions and 11 deletions
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46
py-json/port_probe.py
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@@ -4,6 +4,8 @@ from time import sleep
import pandas as pd
import sys
import os
from pprint import pprint
sys.path.append(os.path.join(os.path.abspath(__file__ + "../../../")))
@@ -54,17 +56,24 @@ class ProbePort(LFCliBase):
sleep(0.2)
response = self.json_get(self.probepath)
self.response = response
#if self.debug:
print("probepath (eid): {probepath}".format(probepath=self.probepath))
print("Probe response: {response}".format(response=self.response))
if self.debug:
print("probepath (eid): {probepath}".format(probepath=self.probepath))
pprint("Probe response: {response}".format(response=self.response))
text = self.response['probe-results'][0][self.eid_str]['probe results'].split('\n')
signals = [x.strip('\t').split('\t') for x in text if 'signal' in x]
keys = [x[0].strip(' ').strip(':') for x in signals]
values = [x[1].strip('dBm').strip(' ') for x in signals]
self.signals = dict(zip(keys, values))
tx_bitrate = [x for x in text if 'tx bitrate' in x][0].replace('\t', ' ')
print("tx_bitrate {tx_bitrate}".format(tx_bitrate=tx_bitrate))
self.tx_bitrate = tx_bitrate.split(':')[-1].strip(' ')
self.tx_nss = [x.strip('\t') for x in text if 'tx bitrate' in x][0].split('NSS')[1].strip(' ')
print("tx_nss {tx_nss}".format(tx_nss=self.tx_nss))
self.tx_mhz = [x.strip('\t') for x in text if 'tx bitrate' in x][0].split('MHz')[0].rsplit(' ')[-1].strip(' ')
print("tx_mhz {tx_mhz}".format(tx_mhz=self.tx_mhz))
rx_bitrate = [x for x in text if 'rx bitrate' in x][0].replace('\t', ' ')
print("rx_bitrate {rx_bitrate}".format(rx_bitrate=rx_bitrate))
self.rx_bitrate = rx_bitrate.split(':')[-1].strip(' ')
try:
@@ -72,7 +81,7 @@ class ProbePort(LFCliBase):
self.tx_mcs = int(tx_mcs.split('MCS')[1].strip(' ').split(' ')[0])
print("self.tx_mcs {tx_mcs}".format(tx_mcs=self.tx_mcs))
self.tx_mbit = float(self.tx_bitrate.split(' ')[0])
self.calculated_data_rate_HT()
self.calculated_data_rate_tx_HT()
'''
# just HT for now
if 'VHT' in self.tx_bitrate:
@@ -167,7 +176,7 @@ class ProbePort(LFCliBase):
def getBeaconSignalAvg(self):
return ' '.join(self.signals['beacon signal avg']).replace(' ', '')
def calculated_data_rate_HT(self):
def calculated_data_rate_tx_HT(self):
# TODO compare with standard for 40 MHz if values change
N_sd = 0 # Number of Data Subcarriers based on modulation and bandwith
N_bpscs = 0# Number of coded bits per Subcarrier(Determined by the modulation, MCS)
@@ -178,7 +187,12 @@ class ProbePort(LFCliBase):
T_gi_long = .8 * 10**-6 # Guard index.
# Note the T_gi is not exactly know so need to calculate bothh with .4 and .8
# the nubmer of Data Subcarriers is based on modulation and bandwith
bw = 20
try:
bw = int(self.tx_mhz)
except BaseException:
print("port_probe.py: {} WARNING unable to parse tx MHz (BW) , check probe output will use ")
print("Mhz {Mhz}".format(Mhz=self.tx_mhz))
if bw == 20:
N_sd = 52
elif bw == 40:
@@ -190,8 +204,12 @@ class ProbePort(LFCliBase):
else:
print("bw needs to be know")
exit(1)
# NSS
N_ss = self.tx_nss
# MCS (Modulation Coding Scheme) determines the constands
# MCS 0 == Modulation BPSK R = 1/2 , N_bpscs = 1,
# Only for HT configuration
if self.tx_mcs == 0:
R = 1/2
N_bpscs = 1
@@ -224,12 +242,18 @@ class ProbePort(LFCliBase):
R = 5/6
N_bpscs = 6
print("mcs {mcs} N_sd {N_sd} N_bpscs {N_bpscs} R {R} N_ss {N_ss} T_dft {T_dft} T_gi_short {T_gi_short}".format(
mcs=self.tx_mcs,N_sd=N_sd,N_bpscs=N_bpscs,R=R,N_ss=N_ss,T_dft=T_dft,T_gi_short=T_gi_short))
data_rate_gi_short = (N_sd * N_bpscs * R * N_ss) / (T_dft + T_gi_short)
print("data_rate gi_short {data_rate}".format(data_rate=data_rate_gi_short))
data_rate_gi_long = (N_sd * N_bpscs * R * N_ss) / (T_dft + T_gi_long)
print("data_rate gi_long {data_rate}".format(data_rate=data_rate_gi_long))
return data_rate_gi_short, data_rate_gi_long
data_rate_gi_short_Mbps = ((N_sd * N_bpscs * R * float(N_ss)) / (T_dft + T_gi_short))/1000000
print("data_rate gi_short {data_rate} Mbit/s".format(data_rate=data_rate_gi_short_Mbps))
print("mcs {mcs} N_sd {N_sd} N_bpscs {N_bpscs} R {R} N_ss {N_ss} T_dft {T_dft} T_gi_long {T_gi_long}".format(
mcs=self.tx_mcs,N_sd=N_sd,N_bpscs=N_bpscs,R=R,N_ss=N_ss,T_dft=T_dft,T_gi_long=T_gi_long))
data_rate_gi_long_Mbps = ((N_sd * N_bpscs * R * float(N_ss)) / (T_dft + T_gi_long))/1000000
print("data_rate gi_long {data_rate} Mbps".format(data_rate=data_rate_gi_long_Mbps))
return data_rate_gi_short_Mbps, data_rate_gi_long_Mbps
'''
# This code reads from a spread sheet