Add RP data collection/plotting scripts

* rp_get_sayma_data.py: to be installed on Creotech remote.
* plot_sayma_data.py: to be installed on local.
master
Harry Ho 2 years ago
parent bf492e2f50
commit 7909267b88
  1. 37
      plot_sayma_data.py
  2. 63
      rp_get_sayma_data.py

@ -0,0 +1,37 @@
import numpy as np
import matplotlib.pyplot as plot
from scipy import signal, constants
def rp_raw_to_numpy(rp_raw):
# Convert raw buffer strings to numpy arrays
buff_string = rp_raw.split(',')
return np.array(list(map(float, buff_string)))
def main():
y1_raw = None
y2_raw = None
with open('rp_y1_raw.bin', 'rb') as f:
y1_raw = f.read().decode('utf-8')
with open('rp_y2_raw.bin', 'rb') as f:
y2_raw = f.read().decode('utf-8')
if None in [y1_raw, y2_raw]:
raise IOError("Raw RP string files cannot be opened.")
y1 = rp_raw_to_numpy(y1_raw)
y2 = rp_raw_to_numpy(y2_raw)
t = np.arange(y1.shape[0])/125e6
y = np.c_[y1, y2].T
z = signal.decimate(y*np.exp(1j*2*np.pi*9e6*t), q=10, ftype="fir", zero_phase=True)[:, 10:]
z = signal.decimate(z, q=10, ftype="fir", zero_phase=True)[:, 10:]
angle = np.angle(np.mean(z[0]*z[1].conj()))
print(angle)
plot.plot(y1)
plot.plot(y2)
plot.show()
if __name__ == "__main__":
main()

@ -0,0 +1,63 @@
import socket
class RPSCPI:
def connect(self, host):
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.connect((host, 5000))
self.sock_f = self.sock.makefile()
def close(self):
self.sock_f.close()
self.sock.close()
def sendmsg(self, msg):
self.sock.send(msg.encode() + b"\r\n")
def recvmsg(self):
return self.sock_f.readline().strip()
def trigger(self):
self.sendmsg("ACQ:START")
self.sendmsg("ACQ:TRIG NOW")
while True:
self.sendmsg("ACQ:TRIG:STAT?")
if self.recvmsg() == "TD":
break
def get_data(self, channel):
self.sendmsg("ACQ:SOUR{}:DATA?".format(channel))
return self.recvmsg()[1:-1]
def main():
rp = RPSCPI()
rp.connect("192.168.1.104")
try:
rp.trigger()
y1_raw = rp.get_data(1)
y2_raw = rp.get_data(2)
with open('rp_y1_raw.bin', 'wb') as f:
f.write(y1_raw.encode('utf-8'))
print("Succesfully written y1 raw string from RP.")
with open('rp_y2_raw.bin', 'wb') as f:
f.write(y2_raw.encode('utf-8'))
print("Succesfully written y2 raw string from RP.")
# DEBUGGING
y1 = [float(i) for i in y1_raw.split(',')]
y2 = [float(i) for i in y2_raw.split(',')]
with open('rp_y1_raw.txt', 'w') as f:
for i in y1:
f.write(str(i) + '\n')
print("[DEBUG] Succesfully written y1 human-readable data.")
with open('rp_y2_raw.txt', 'w') as f:
for i in y2:
f.write(str(i) + '\n')
print("[DEBUG] Succesfully written y2 human-readable data.")
finally:
rp.close()
if __name__ == "__main__":
main()
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