Hello everyone,
I have been attempting to make my own block that sends out a boolean
message if certain time related conditions are met.
I am unable to figure out why my block does not work. This seems to be the
line of interest:
*self.message_port_pub(pmt.intern('msg_out'), pmt.PMT_T)*
This line should cause the block to output a PMT true through port msg_out
right?
My full block is attached bellow. Any help would be greatly appreciated.
Thank you all for your time,
Ali
======================
import numpy as np
from gnuradio import gr
import pmt
import datetime
class msg_block(gr.basic_block): # other base classes are basic_block,
decim_block, interp_block
"""This block checks time and sends true or false if capture period is
desired"""
def __init__(self, minutes=15, seconds=10): # only default arguments
here
"""arguments to this function show up as parameters in GRC"""
gr.basic_block.__init__(
self,
name='Time Enable', # will show up in GRC
in_sig=None,
out_sig=None
)
self.message_port_register_out(pmt.intern('msg_out'))
now = datetime.datetime.now()
#P_true = pmt.PMT_T
#P_false = pmt.PMT_F
if ((now.minute % minutes) == 0): #check if minute is ok
if (now.second < seconds): #check if capture period is ok
self.message_port_pub(pmt.intern('msg_out'), pmt.PMT_T)
else:
self.message_port_pub(pmt.intern('msg_out'), pmt.PMT_F)
else:
self.message_port_pub(pmt.intern('msg_out'), pmt.PMT_F)
def work(self, input_items, output_items):
pass
=====================================
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