from nmigen import Elaboratable, Module, Signal, Array, unsigned, Const
from nmigen.build import Platform
from nmigen.cli import main_parser, main_runner
from src.ldpc_decoder import LDPC_Decoder
if __name__ == "__main__":
#Instantiate a command line argument parser
parser = main_parser()
args = parser.parse_args()
#Instantiate an nMigen Module
m = Module()
#Instantiate the Parity Check Matrix 'H' for generating ldpc Code Words
#https://en.wikipedia.org/wiki/Low-density_parity-check_code
parityCheckMatrix = [[0b111100], [0b001101], [0b100110]]
#Instantiate the LDPC_Decoder Module with the parity check matrix, input codeword size and output data size as parameters
m.submodules.LDPC_Decoder = LDPC_Decoder = LDPC_Decoder(
parityCheckMatrix, 6, 3)
main_runner(parser,
args,
m,
ports=[
LDPC_Decoder.data_input, LDPC_Decoder.data_output,
LDPC_Decoder.start, LDPC_Decoder.done, LDPC_Decoder.success
])
def setUp(self):
parityCheckMatrix = [[0b000011100], [0b110000010], [0b001100001],
[0b100001010], [0b001000101], [0b010110000]]
self.dut = LDPC_Decoder(parityCheckMatrix, 9, 4)
#Delay for 25 clock cycles
for i in range(25):
yield Delay(1e-6)
if __name__ == "__main__":
#Instantiate an nMigen Module
m = Module()
#Instantiate the Parity Check Matrix 'H'
#https://en.wikipedia.org/wiki/Low-density_parity-check_code
parityCheckMatrix = [[0b000011100], [0b110000010], [0b001100001],
[0b100001010], [0b001000101], [0b010110000]]
#Instantiate the LDPC_Decoder Module with the generator matrix, input codeword size and output data size as parameters
m.submodules.LDPC_Decoder = LDPC_Decoder = LDPC_Decoder(
parityCheckMatrix, 9, 4)
#Simulation
#[SIGNAL] - data_input - A top level signal which connects the 'data_input' signal on the LDPC Decoder
data_input = Signal(9)
#[SIGNAL] - start - A top level signal which connects the 'start' signal on the LDPC Decoder
start = Signal(1)
#Link the local data_input and start signals to the LDPC Input Ports
m.d.comb += LDPC_Decoder.data_input.eq(data_input)
m.d.comb += LDPC_Decoder.start.eq(start)
#Create a simulator instance with the local nMigen module which contains the LDPC Decoder
sim = Simulator(m)
if __name__ == "__main__":
#Instantiate an nMigen Module
m = Module()
#Instantiate the parity check Matrix 'H'
#https://en.wikipedia.org/wiki/Low-density_parity-check_code
parityCheckMatrix = [[0b111100],
[0b001101],
[0b100110] ]
#Instantiate the LDPC_Decoder Module with the generator matrix and output codeword size as parameters
m.submodules.LDPC_Decoder = LDPC_Decoder = LDPC_Decoder(parityCheckMatrix,6,3)
#Simulation
#[SIGNAL] - data_input - A top level signal which connects the 'data_input' signal on the LDPC Decoder
data_input = Signal(6)
#[SIGNAL] - start - A top level signal which connects the 'start' signal on the LDPC Decoder
start = Signal(1)
#Link the local data_input and start signals to the LDPC Decoder Input Ports
m.d.comb += LDPC_Decoder.data_input.eq(data_input)
m.d.comb += LDPC_Decoder.start.eq(start)
#Create a simulator instance with the local nMigen module which contains the LDPC Decoder
sim = Simulator(m)