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#!/usr/bin/env python
#
# Copyright 2010-2011 Ettus Research LLC
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import optparse
import math
import socket
import struct
import time
import sys
########################################################################
# constants
########################################################################
B250_FPGA_IMAGE_SIZE_BYTES = 15877916
B250_FPGA_PROG_UDP_PORT = 49157
B250_FPGA_PROG_FLAGS_ACK = 1
B250_FPGA_PROG_FLAGS_ERROR = 2
B250_FPGA_PROG_FLAGS_INIT = 4
B250_FPGA_PROG_FLAGS_CLEANUP = 8
B250_FPGA_PROG_FLAGS_ERASE = 16
B250_FPGA_PROG_FLAGS_VERIFY = 32
B250_FPGA_PROG_CONFIGURE = 64
B250_FPGA_PROG_CONFIG_STATUS = 128
B250_FLASH_SECTOR_SIZE = 131072
B250_PACKET_SIZE = 256
B250_FPGA_SECTOR_START = 16
B250_MAX_RESPONSE_BYTES = 128
UDP_TIMEOUT = 3
FPGA_LOAD_TIMEOUT = 15
########################################################################
# helper functions
########################################################################
def get_options():
parser = optparse.OptionParser()
parser.add_option("--addr", type="string", help="USRP-B250 device address", default='')
parser.add_option("--download", type="string", help="Path to the FPGA image to download.", default=None)
parser.add_option("--posc", type="string", help="Path to the POSC image to download.", default=None)
parser.add_option("--program", action="store_true", help="Program the FPGA from flash.", default=False)
parser.add_option("--verify", action="store_true", help="Verify data downloaded to flash.", default=False)
(options, args) = parser.parse_args()
return options
def draw_progress_bar(percent, bar_len = 28):
sys.stdout.write("\r")
progress = ""
for i in range(bar_len):
if i < int((bar_len * percent) / 100):
progress += "="
else:
progress += "-"
sys.stdout.write("[%s] %d%%" % (progress, percent))
sys.stdout.flush()
def unpack_x300_fpga_flags_fmt(s):
return struct.unpack('!L', s)[0] #(flags)
def pack_x300_fpga_prog_fmt(flags, sector, offset, size, data):
return struct.pack("!LLLL%dH" % (len(data),), flags, sector, offset, size, *data)
def bit_reverse(byte):
b = ord(byte)
b = (b & 0xF0) >> 4 | (b & 0x0F) << 4
b = (b & 0xCC) >> 2 | (b & 0x33) << 2
b = (b & 0xAA) >> 1 | (b & 0x55) << 1
return chr(b)
def chunkify(stuff, n):
return [stuff[i:i+n] for i in range(0, len(stuff), n)]
########################################################################
# Burner class, holds a socket and send/recv routines
########################################################################
class ctrl_socket(object):
def __init__(self, addr):
self._sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self._sock.settimeout(UDP_TIMEOUT)
self._sock.connect((addr, B250_FPGA_PROG_UDP_PORT))
self.set_callbacks(lambda *a: None, lambda *a: None)
def set_callbacks(self, progress_cb, status_cb):
self._progress_cb = progress_cb
self._status_cb = status_cb
def send_without_ack(self, pkt):
self._sock.send(pkt)
def send_with_ack(self, out_pkt, message):
self.send_without_ack(out_pkt)
in_pkt = self._sock.recv(B250_MAX_RESPONSE_BYTES)
flags = unpack_x300_fpga_flags_fmt(in_pkt)
if flags & B250_FPGA_PROG_FLAGS_ERROR == B250_FPGA_PROG_FLAGS_ERROR:
raise Exception(message)
def download_fpga(self, image, verify):
print("Reading FPGA image file...")
fpga_file = open(image, 'rb')
print("Processing FPGA image...")
fpga_image = ''.join([ bit_reverse(b) for b in fpga_file.read() ])
print("Writing FPGA image to flash...")
out_pkt = pack_x300_fpga_prog_fmt(B250_FPGA_PROG_FLAGS_ACK|B250_FPGA_PROG_FLAGS_INIT,
0, 0, 0, [0]*(B250_PACKET_SIZE/2))
self.send_with_ack(out_pkt, "Flash initialization failed!!!")
sector_chunks = chunkify(fpga_image, B250_FLASH_SECTOR_SIZE)
for sector_idx in range(len(sector_chunks)):
packet_chunks = chunkify(sector_chunks[sector_idx], B250_PACKET_SIZE)
offset = 0
for packet_data in packet_chunks:
data = struct.unpack("%dH" % (len(packet_data) / 2), packet_data)
flags = B250_FPGA_PROG_FLAGS_ACK
if offset == 0: flags |= B250_FPGA_PROG_FLAGS_ERASE
if verify: flags |= B250_FPGA_PROG_FLAGS_VERIFY
out_pkt = pack_x300_fpga_prog_fmt(flags, B250_FPGA_SECTOR_START+sector_idx, offset, len(data), data)
self.send_with_ack(out_pkt, "Transfer failed or data verification failed!!!")
offset += len(data)
draw_progress_bar(((sector_idx+1)*100)/len(sector_chunks))
print(' ')
out_pkt = pack_x300_fpga_prog_fmt(B250_FPGA_PROG_FLAGS_ACK|B250_FPGA_PROG_FLAGS_CLEANUP,
0, 0, 0, [0]*(B250_PACKET_SIZE/2))
self.send_with_ack(out_pkt, "Flash cleanup failed!!!")
def program(self):
print("Programming FPGA from flash...")
out_pkt = pack_x300_fpga_prog_fmt(B250_FPGA_PROG_CONFIGURE, 0, 0, 0, [0]*(B250_PACKET_SIZE/2))
self.send_without_ack(out_pkt)
print("Waiting for FPGA to load...")
self._sock.settimeout(1)
out_pkt = pack_x300_fpga_prog_fmt(B250_FPGA_PROG_FLAGS_ACK|B250_FPGA_PROG_CONFIG_STATUS, 0, 0, 0, [0]*(B250_PACKET_SIZE/2))
for i in range(FPGA_LOAD_TIMEOUT):
try:
self.send_without_ack(out_pkt)
in_pkt = self._sock.recv(B250_MAX_RESPONSE_BYTES)
flags = unpack_x300_fpga_flags_fmt(in_pkt)
if not(flags & B250_FPGA_PROG_FLAGS_ERROR == B250_FPGA_PROG_FLAGS_ERROR):
break
except socket.error:
pass
########################################################################
# main
########################################################################
if __name__=='__main__':
options = get_options()
if not options.addr:
raise Exception('No address specified')
status = ctrl_socket(addr=options.addr)
start_time = time.time()
if options.download is not None:
status.download_fpga(options.download, options.verify)
if options.program:
status.program()
print("(Elapsed time: %.1fs)" % (time.time() - start_time))
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