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#!/usr/bin/env python
"""
# TOP2049 Open Source programming suite
#
# Copyright (c) 2009-2010 Michael Buesch <mb@bu3sch.de>
#
# 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 2 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
from bitfile import *
import sys
import getopt
import time
try:
import usb
except (ImportError), e:
print "Python USB support module not found. Please install python-usb."
sys.exit(1)
def dumpMem(mem):
def toAscii(char):
if char >= 32 and char <= 126:
return chr(char)
return "."
ascii = ""
for i in range(0, len(mem)):
if i % 16 == 0 and i != 0:
sys.stdout.write(" " + ascii + "\n")
ascii = ""
if i % 16 == 0:
sys.stdout.write("0x%04X: " % i)
c = ord(mem[i])
sys.stdout.write("%02X" % c)
if (i % 2 != 0):
sys.stdout.write(" ")
ascii += toAscii(c)
sys.stdout.write(" " + ascii + "\n\n")
class TOPException(Exception): pass
class TOP:
# Configurable voltage lines.
VOLTAGE_VPP = 0x12
VOLTAGE_VCCX = 0x13
def __init__(self, bitfileName, busDev=None):
"""bitfileName is the path to the .bit file.
busDev is a tuple (BUSID, DEVID) or None."""
self.bitfile = Bitfile()
self.bitfile.parseFile(bitfileName)
# Find the device
for bus in usb.busses():
if busDev and bus.dirname != "%03d" % busDev[0]:
continue
for dev in bus.devices:
if busDev and dev.filename != "%03d" % busDev[1]:
continue
if self.__isTOP(dev):
break
if busDev:
raise TOPException(
"Device %03d.%03d is not a TOP device" %\
(busDev[0], busDev[1]))
else:
continue
break
else:
raise TOPException("TOP programmer device not found!")
self.usbbus = bus
self.usbdev = dev
self.bulkOut = None
self.bulkIn = None
# Set up the USB interface
try:
self.usbh = self.usbdev.open()
config = self.usbdev.configurations[0]
interface = config.interfaces[0][0]
# Find the endpoints
for ep in interface.endpoints:
if not self.bulkIn and \
ep.type == usb.ENDPOINT_TYPE_BULK and \
(ep.address & usb.ENDPOINT_IN) != 0:
self.bulkIn = ep
if not self.bulkOut and \
ep.type == usb.ENDPOINT_TYPE_BULK and \
(ep.address & usb.ENDPOINT_IN) == 0:
self.bulkOut = ep
if not self.bulkIn or not self.bulkOut:
raise TOPException("Did not find all USB EPs")
self.usbh.setConfiguration(config)
self.usbh.claimInterface(interface)
self.usbh.setAltInterface(interface)
self.usbh.clearHalt(self.bulkOut.address)
self.usbh.clearHalt(self.bulkIn.address)
except (usb.USBError), e:
raise TOPException("USB error: " + str(e))
self.__initialize()
@staticmethod
def __isTOP(usbdev):
ids = ( (0x2471, 0x0853), )
return (usbdev.idVendor, usbdev.idProduct) in ids
def __initialize(self):
"Initialize the hardware"
ver = self.cmdRequestVersion()
print "Detected a", ver
self.__send("\x0D")
stat = self.cmdReadStatusReg()
# What to do with the status?
self.__send("\x0A\x1B\xFF")
self.cmdSetVoltage(TOP.VOLTAGE_VPP, 0)
self.cmdFlush()
self.cmdSetVoltage(TOP.VOLTAGE_VPP, 0)
self.cmdFlush()
self.cmdSetVoltage(TOP.VOLTAGE_VPP, 0)
self.cmdFlush()
self.cmdSetVoltage(TOP.VOLTAGE_VPP, 12)
self.cmdFlush()
self.__send("\x0E\x20\x00\x00")
self.cmdFlush()
self.cmdSetVoltage(TOP.VOLTAGE_VCCX, 0)
self.cmdFlush()
self.__send("\x0A\x1D\x86")
self.cmdSetGNDPin(0)
self.cmdLoadVPPLayout(0)
self.cmdLoadVCCXLayout(0)
self.cmdFlush()
self.cmdSetVoltage(TOP.VOLTAGE_VPP, 0)
self.cmdFlush()
self.cmdSetVoltage(TOP.VOLTAGE_VPP, 12)
self.cmdFlush()
self.__send("\x0E\x20\x00\x00")
self.cmdFlush()
self.__send("\x0E\x25\x00\x00")
stat = self.cmdReadStatusReg()
# What to do with the status?
self.__bitfileUpload()
self.__initVoltageLayouts()
def __bitfileUpload(self):
self.__send("\x0A\x1B\x00")
self.__send("\x0E\x21\x00\x00")
stat = self.cmdReadStatusReg()
# What to do with the status?
data = self.bitfile.getPayload()
for i in range(0, len(data), 60):
self.cmdFPGAUploadData(data[i : i + 60])
def __initVoltageLayouts(self):
# FIXME: This depends on the selected chip
self.cmdSetGNDPin(18)
self.cmdSetVoltage(TOP.VOLTAGE_VCCX, 5)
self.cmdFlush()
self.cmdSetVoltage(TOP.VOLTAGE_VPP, 0)
self.cmdFlush()
self.cmdSetVoltage(TOP.VOLTAGE_VPP, 12)
def cmdFlush(self, count=1):
"""Send 'count' flush requests."""
assert(count >= 1)
self.__send(chr(0x1B) * count)
def cmdReadStatusReg(self):
"""Read the status register. Returns 64 bytes."""
self.__send(chr(0x07))
return self.__receive(64)
def cmdRequestVersion(self):
"""Returns the device ID and versioning string."""
self.__send("\x0E\x11\x00\x00")
data = self.cmdReadStatusReg()
return data[0:16].strip()
def cmdFPGAUploadData(self, data):
"""Upload data into the FPGA."""
assert(len(data) <= 60)
cmd = "\x0E\x22\x00\x00" + data
cmd += "\x00" * (64 - len(cmd)) # padding
self.__send(cmd)
def cmdSetGNDPin(self, zifPin):
"""Assign GND to a ZIF socket pin. 0=none"""
valid = (0, 5, 14, 15, 16, 17, 18, 19, 20, 24, 26, 27,
28, 29, 33, 34, 35)
assert(zifPin in valid)
if zifPin != 0:
zifPin -= 4
cmd = chr(0x0E) + chr(0x16) + chr(zifPin) + chr(0)
self.__send(cmd)
def cmdLoadVPPLayout(self, layout):
"""Load the VPP configuration into the shift registers."""
cmd = chr(0x0E) + chr(0x14) + chr(layout) + chr(0)
self.__send(cmd)
def cmdLoadVCCXLayout(self, layout):
"""Load the VCCX configuration into the shift registers."""
cmd = chr(0x0E) + chr(0x15) + chr(layout) + chr(0)
self.__send(cmd)
def cmdSetVoltage(self, line, voltage):
"""Set the voltage of a line. line is a VOLTAGE_xxx idenitifier.
voltage is a floating point number."""
centivolt = int(voltage * 10)
cmd = chr(0x0E) + chr(line) + chr(centivolt) + chr(0)
self.__send(cmd)
def __send(self, command):
try:
ep = self.bulkOut.address
self.usbh.bulkWrite(ep, command)
except (usb.USBError), e:
raise TOPException("USB bulk write error: " + str(e))
def __receive(self, size):
try:
ep = self.bulkIn.address
data = ""
for c in self.usbh.bulkRead(ep, size):
data += chr(c)
dumpMem(data)#XXX
except (usb.USBError), e:
raise TOPException("USB bulk read error: " + str(e))
return data
def usage():
print "TOP2049 Open Source programming suite"
print ""
print "Usage: %s [OPTIONS]" % sys.argv[0]
print ""
print " -b|--bitfile Path to the *.bit file (mandatory)"
print ""
print " -d|--device BUS.DEV Use the programmer at BUS.DEV"
print " First found programmer is used, if not given."
def main(argv):
opt_bitfile = None
opt_device = None
try:
(opts, args) = getopt.getopt(sys.argv[1:],
"hb:d:",
[ "help", "bitfile=", "device=", ])
except getopt.GetoptError:
usage()
return 1
for (o, v) in opts:
if o in ("-h", "--help"):
usage()
return 0
if o in ("-b", "--bitfile"):
opt_bitfile = v
if o in ("-d", "--device"):
try:
v = v.split(".")
opt_device = (int(v[0]), int(v[1]))
except (IndexError, ValueError), e:
print "-d|--device invalid BUS.DEV id."
return 1
if not opt_bitfile:
print "-b|--bitfile is mandatory!"
return 1
try:
top = TOP(opt_bitfile, opt_device)
except (TOPException, BitfileException), e:
print e
return 1
return 0
if __name__ == "__main__":
sys.exit(main(sys.argv))
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