def generate_channelizer_executable(name, n_chans, width, filter_length, defines):
"""
Generate an icarus verilog channelizer executable.
Args:
name: A name to identify the executable by.
n_chans: Number of channels to split into.
width: The width of a complex number
(actually required so we can get the twiddle factor widths for fft).
filter_length: The length of each filter in the filterbank.
defines: Macro definitions for the verilog files.
"""
builddir = get_builddir()
inputfiles = generate_channelizer_files(n_chans, width, filter_length)
dut_channelizer_fn = copyfile('channelizer', 'dut_channelizer.v')
executable = "channelizer_{name}".format(name=name)
executable = os.path.join(config.builddir, 'channelizer', executable)
inputfilestr = ' '.join(inputfiles + [dut_channelizer_fn])
defines.update({
'N': n_chans,
'LOG_N': int(math.ceil(math.log(n_chans)/math.log(2))),
'FLTLEN': filter_length,
'LOG_FLTLEN': int(math.ceil(math.log(filter_length)/math.log(2))),
})
definestr = make_define_string(defines)
cmd = ("iverilog -o {executable} {definestr} {inputfiles}"
).format(executable=executable,
definestr=definestr,
inputfiles=inputfilestr)
logger.debug(cmd)
os.system(cmd)
return executable
def generate_dit_executable(name, fft_length, defines):
log_fft_length = math.log(fft_length) / math.log(2)
if log_fft_length != int(log_fft_length):
raise ValueError("fft_length must be a power of two")
log_fft_length = int(log_fft_length)
get_builddir()
defines['N'] = fft_length
defines['LOG_N'] = log_fft_length
dut_dit_fn = copyfile('fft', 'dut_dit.v')
inputfiles = generate_dit_files(fft_length, defines['WIDTH'] / 2)
executable = "dit_{name}".format(name=name)
executable = os.path.join(config.builddir, 'fft', executable)
inputfilestr = ' '.join(inputfiles + [dut_dit_fn])
definestr = make_define_string(defines)
cmd = ("iverilog -o {executable} {definestr} {inputfiles}").format(
executable=executable, definestr=definestr, inputfiles=inputfilestr)
logger.debug(cmd)
os.system(cmd)
return executable
def generate_dit_executable(name, fft_length, defines):
log_fft_length = math.log(fft_length)/math.log(2)
if log_fft_length != int(log_fft_length):
raise ValueError("fft_length must be a power of two")
log_fft_length = int(log_fft_length)
get_builddir()
defines['N'] = fft_length
defines['LOG_N'] = log_fft_length
dut_dit_fn = copyfile('fft', 'dut_dit.v')
inputfiles = generate_dit_files(fft_length, defines['WIDTH']/2)
executable = "dit_{name}".format(name=name)
executable = os.path.join(config.builddir, 'fft', executable)
inputfilestr = ' '.join(inputfiles + [dut_dit_fn])
definestr = make_define_string(defines)
cmd = ("iverilog -o {executable} {definestr} {inputfiles}"
).format(executable=executable,
definestr=definestr,
inputfiles=inputfilestr)
logger.debug(cmd)
os.system(cmd)
return executable
