#########################################################################################
##
## SAMPLE AND HOLD BLOCK
## (blocks/mixed/samplehold.py)
##
## Milan Rother 2024
##
#########################################################################################
# IMPORTS ===============================================================================
from .._block import Block
from ...events.schedule import Schedule
# MIXED SIGNAL BLOCKS ===================================================================
[docs]
class SampleHold(Block):
"""Sample and hold stage that samples the inputs
periodically using scheduled events and produces
them at the output.
Parameters
----------
T : float
sampling period
tau : float
delay
Attributes
----------
events : list[Schedule]
internal scheduled event for periodic sampling
"""
def __init__(self, T=1, tau=0):
super().__init__()
self.T = T
self.tau = tau
def _sample(t):
self.outputs = self.inputs.copy()
#internal scheduled events
self.events = [
Schedule(
t_start=tau,
t_period=T,
func_act=_sample
),
]
def __len__(self):
return 0