def generate_dit_files(fft_length, tf_width):
"""
Generate the fft files to perform an fft.
Args:
fft_length: Length of the FFT.
tf_width: Number of bits in each real number of each twiddle factor.
"""
get_builddir()
inputfiles = generate_math_files()
inputfiles.append(copyfile('fft', 'butterfly.v'))
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)
# Generate the dit.v file
dit_fn = 'dit_{0}'.format(fft_length)
inputfiles.append(
format_template('fft', 'dit.v.t', dit_fn, {'N': fft_length}))
# Generate twiddle factor file.
tf_fn = 'twiddlefactors_{0}'.format(fft_length)
vs = [
cmath.exp(-i * 2j * cmath.pi / fft_length)
for i in range(0, fft_length / 2)
]
tfs = cs_to_dicts(vs, tf_width * 2, clean1=True)
tf_dict = {
'N': fft_length,
'log_N': log_fft_length,
'tf_width': tf_width,
'tfs': tfs,
}
inputfiles.append(
format_template('fft', 'twiddlefactors.v.t', tf_fn, tf_dict))
return inputfiles
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_files(fft_length, tf_width):
"""
Generate the fft files to perform an fft.
Args:
fft_length: Length of the FFT.
tf_width: Number of bits in each real number of each twiddle factor.
"""
get_builddir()
inputfiles = generate_math_files()
inputfiles.append(copyfile('fft', 'butterfly.v'))
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)
# Generate the dit.v file
dit_fn = 'dit_{0}'.format(fft_length)
inputfiles.append(
format_template('fft', 'dit.v.t', dit_fn, {'N': fft_length}))
# Generate twiddle factor file.
tf_fn = 'twiddlefactors_{0}'.format(fft_length)
vs = [cmath.exp(-i*2j*cmath.pi/fft_length) for i in range(0, fft_length/2)]
tfs = cs_to_dicts(vs, tf_width*2, clean1=True)
tf_dict = {
'N': fft_length,
'log_N': log_fft_length,
'tf_width': tf_width,
'tfs': tfs,
}
inputfiles.append(
format_template('fft', 'twiddlefactors.v.t', tf_fn, tf_dict))
return inputfiles
def generate_sample_msg_splitter_B100_image(name, defines=config.default_defines):
message_builddir= os.path.join(config.builddir, 'message')
inputfiles = generate_sample_msg_splitter_files()
inputfiles.append(copyfile('message', 'qa_sample_msg_splitter.v'))
b100.make_make(name, message_builddir, inputfiles, defines)
for f in inputfiles:
b100.prefix_defines(f, defines)
b100.synthesise(name, message_builddir)
def generate_slicer_files():
"""
Generate the files for the message slicer.
"""
check_builddir()
inputfiles = ['message_slicer.v']
outputfiles = []
for f in inputfiles:
outputfiles.append(copyfile('message', f))
return outputfiles
def generate_qa_wrapper_files():
"""
Generate the files to make the 'nothing' block.
"""
uhd_builddir = os.path.join(config.builddir, 'uhd')
if not os.path.exists(uhd_builddir):
os.makedirs(uhd_builddir)
inputfiles = [copyfile('uhd', 'qa_wrapper.v')]
inputfiles += generate_sample_msg_splitter_files()
inputfiles += generate_stream_combiner_files()
return inputfiles
def generate_qa_wrapper_files():
"""
Generate the files to make the 'nothing' block.
"""
uhd_builddir= os.path.join(config.builddir, 'uhd')
if not os.path.exists(uhd_builddir):
os.makedirs(uhd_builddir)
inputfiles = [copyfile('uhd', 'qa_wrapper.v')]
inputfiles += generate_sample_msg_splitter_files()
inputfiles += generate_stream_combiner_files()
return inputfiles
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_stream_combiner_executable(
method, n_streams, width, input_buffer_length, max_packet_length):
"""
Generate an executable for the stream combiner DUT.
Use for MyHDL testing.
Args:
method: What are we generating for (icarus or xilinx).
n_streams: Number of message streams to combine.
width: Bit width of a data block.
input_buffer_length: Number of data blocks in each input buffer.
max_packet_length: Maximum number of data blocks in a packet.
"""
assert(method in ('icarus', 'xilinx'))
check_builddir()
# Check that buffer lengths are power of two
log_input_buffer_length = math.log(input_buffer_length)/math.log(2)
if log_input_buffer_length != int(log_input_buffer_length):
raise ValueError("input_buffer_length must be a power of 2")
dut_msc_fn = copyfile('message', 'dut_message_stream_combiner.v')
executable = "message_stream_combiner"
executable = os.path.join(config.builddir, 'message', executable)
inputfiles = generate_stream_combiner_files()
inputfilestr = ' '.join(inputfiles + [dut_msc_fn])
cmd = ("iverilog -o {executable} -DN_STREAMS={n_streams} -DLOG_N_STREAMS={log_n_streams} "
"-DWIDTH={width} -DINPUT_BUFFER_LENGTH={input_buffer_length} "
"-DLOG_INPUT_BUFFER_LENGTH={log_input_buffer_length} "
"-DMAX_PACKET_LENGTH={max_packet_length} "
"-DLOG_MAX_PACKET_LENGTH={log_max_packet_length} "
"{inputfiles} "
).format(executable=executable, n_streams=n_streams,
log_n_streams=logceil(n_streams),
width=width,
input_buffer_length=input_buffer_length,
log_input_buffer_length=int(log_input_buffer_length),
max_packet_length=max_packet_length,
log_max_packet_length=logceil(max_packet_length),
inputfiles=inputfilestr)
logger.debug(cmd)
os.system(cmd)
return executable
def generate_channelizer_files(n_chans, width, filter_length):
"""
Generate the channelizer module files.
Args:
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.
"""
builddir = get_builddir()
logn = math.log(n_chans)/math.log(2)
if int(logn) != logn:
raise ValueError("Number of channels must be a power of two.")
# Divide width by 2 since generate_dit_files takes real width not complex width.
inputfiles = generate_dit_files(n_chans, width/2)
inputfiles += generate_filterbank_files(filter_length)
inputfiles.append(copyfile('channelizer', 'channelizer.v'))
# Remove repeated dependencies
inputfiles = list(set(inputfiles))
return inputfiles
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_slicer_executable(method, n_slices, width, buffer_length):
"""
Generate the files for creating message streams.
Args:
method: What are we generating for (icarus or xilinx).
n_slices: How many times bigger the input is that width.
width: Bit width of a data block.
buffer_length: Number of data blocks in the buffer.
"""
assert(method in ('icarus', 'xilinx'))
check_builddir()
# Check that buffer lengths are power of two
log_buffer_length = math.log(buffer_length)/math.log(2)
if log_buffer_length != int(log_buffer_length):
raise ValueError("buffer_length must be a power of 2")
dut_ms_fn = copyfile('message', 'dut_message_slicer.v')
inputfiles = generate_slicer_files()
executable = "message_slicer"
executable = os.path.join(config.builddir, 'message', executable)
inputfiles = [os.path.join(config.builddir, 'message', f) for f in inputfiles]
inputfilestr = ' '.join(inputfiles + [dut_ms_fn])
cmd = ("iverilog -o {executable} -DN_SLICES={n_slices} "
"-DLOG_N_SLICES={log_n_slices} "
"-DWIDTH={width} -DBUFFER_LENGTH={buffer_length} "
"-DLOG_BUFFER_LENGTH={log_buffer_length} "
"{inputfiles} "
).format(executable=executable, n_slices=n_slices,
log_n_slices=int(math.ceil(math.log(n_slices)/math.log(2))),
width=width,
buffer_length=buffer_length,
log_buffer_length=int(log_buffer_length),
inputfiles=inputfilestr)
logger.debug(cmd)
os.system(cmd)
return executable
def generate_qa_wrapper_null_files():
uhd_builddir = os.path.join(config.builddir, 'uhd')
if not os.path.exists(uhd_builddir):
os.makedirs(uhd_builddir)
inputfiles = [copyfile('uhd', 'qa_wrapper_null.v')]
return inputfiles
def generate_qa_wrapper_null_files():
uhd_builddir= os.path.join(config.builddir, 'uhd')
if not os.path.exists(uhd_builddir):
os.makedirs(uhd_builddir)
inputfiles = [copyfile('uhd', 'qa_wrapper_null.v')]
return inputfiles
def generate_sample_msg_splitter_files():
check_builddir()
return [copyfile('message', 'sample_msg_splitter.v')]
