import matplotlib.pyplot as plt

sample_rate = 100000  # Hz

on_time = 300e-6      # 300 microseconds
off_time = 300e-6

on_samples = int(on_time * sample_rate)
off_samples = int(off_time * sample_rate)

bool_array = (
    [True] * on_samples +
    [False] * off_samples
)

# repeat several cycles
bool_array = bool_array * 5


time = []
voltage = []

for sample, bit in enumerate(bool_array):
    time.append(sample / sample_rate)
    voltage.append(1.0 if bit else 0.0)


plt.figure(figsize=(10,4))
plt.step(time, voltage, where="post")
plt.xlabel("Time (seconds)")
plt.ylabel("Voltage")
plt.title("300us ON / 300us OFF Digital Wave")
plt.grid(True)
plt.ylim(-0.2, 1.2)
plt.show()