def main():
t = 0.0
A = 10.0 # Sine wave amplitude [-]
F = 1.3 # Sine wave frequency [Hz]
A2 = 1.2
F2 = 100
B = 5.0 # Sine wave offset
client = LognplotTcpClient()
client.connect()
dt = 0.0001 # 10 kHz
n_samples = 2000
while True:
samples = []
samples2 = []
t0 = t
# Generate samples:
for _ in range(n_samples):
omega = 2 * math.pi * F
omega2 = 2 * math.pi * F2
sample = A * math.sin(omega * t) + B + A2 * math.cos(omega2 * t)
sample2 = A * math.sin(omega * t) + B + A2 * math.cos(omega2 * t) + 9
samples.append(sample)
samples2.append(sample2)
# Increment time:
t += dt
print(f"Sending {len(samples)} samples")
client.send_samples("Trace1", t0, dt, samples)
client.send_samples("Trace2", t0, dt, samples2)
time.sleep(n_samples * dt)
def main():
t = 0.0
A = 10.0 # Sine wave amplitude [-]
F = 1.3 # Sine wave frequency [Hz]
A2 = 1.2
F2 = 100
B = 5.0 # Sine wave offset
sigma_delta_step = 0.3
sigma_delta_value = 0
client = LognplotTcpClient()
client.connect()
dt = 0.0001 # 10 kHz
n_samples = 2000
while True:
samples = []
samples2 = []
samples3 = []
samples4 = []
t0 = t
# Generate samples:
for _ in range(n_samples):
omega = 2 * math.pi * F
omega2 = 2 * math.pi * F2
sample = A * math.sin(omega * t) + B + A2 * math.cos(omega2 * t)
sample2 = A * math.sin(omega * t) + B + A2 * math.cos(
omega2 * t) + 9
# Track sample with binary output:
if sigma_delta_value < sample:
sample3 = 1.0
sigma_delta_value += sigma_delta_step
else:
sample3 = 0.0
sigma_delta_value -= sigma_delta_step
samples.append(sample)
samples2.append(sample2)
samples3.append(sample3)
samples4.append(float(random.randint(0, 1)))
# Increment time:
t += dt
gen = random_bits()
samples5 = [float(next(gen)) for _ in range(n_samples)]
print(f"Sending {len(samples)} samples")
client.send_samples("Trace1", t0, dt, samples)
client.send_samples("Trace2", t0, dt, samples2)
client.send_samples("SIGMA-DELTA", t0, dt, samples3)
client.send_samples("RANDOM", t0, dt, samples4)
client.send_samples("TEXT_BITS", t0, dt, samples5)
client.send_text("Log", t0, f"Log at {t0:.3}")
client.send_text("Log2", t0, f"Another log at {t0:.3}")
client.send_text("Other TXT", t0, f"Yet {t0:.3} blah")
time.sleep(n_samples * dt)
"""
import argparse
import struct
import sys
from lognplot.client import LognplotTcpClient
# Assume 44100 Hz and
fs = 44100
ts = 1 / fs
fmt = "S16_LE"
fmt = "<h" # 16 bit signed little endian
t = 0.0
buf_size = 2048 # Number of samples to read at once.
sample_size = struct.calcsize(fmt)
lpc = LognplotTcpClient()
lpc.connect()
while True:
data = sys.stdin.buffer.read(buf_size * sample_size)
print(len(data))
samples = []
for i in range(buf_size):
(v, ) = struct.unpack(
fmt, data[i * sample_size:i * sample_size + sample_size])
samples.append(float(v))
lpc.send_samples("AUDIO", t, ts, samples)
t += buf_size * ts