1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
"""
# TOP2049 Open Source programming suite
#
# ZIF socket layout generator
#
# Copyright (c) 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 toprammer_main import *
class LayoutGenerator:
"Layout generator baseclass."
class MapError(Exception): pass
def __init__(self):
pass
def setProgrammerType(self, programmer="TOP2049"):
supportedDevices = {
# Map deviceName : layoutModules, ZIF-pin-count
"TOP2049" : (top2049.vccx_layouts, top2049.vpp_layouts,
top2049.gnd_layouts, 48)
}
try:
(vccx_layouts, vpp_layouts, gnd_layouts, zifPins) = \
supportedDevices[programmer]
except (KeyError), e:
raise TOPException("Programmer " + programmer + " not supported")
self.vccxLayout = vccx_layouts.VCCXLayout()
self.vppLayout = vpp_layouts.VPPLayout()
self.gndLayout = gnd_layouts.GNDLayout()
self.zifPins = zifPins
def setPins(self, vccxPin, vppPin, gndPin):
"Load the supply pin locations"
self.vccxPin = vccxPin
self.vppPin = vppPin
self.gndPin = gndPin
self.verifyPins()
def verifyPins(self):
pass
def maxOffset(self, upsideDown):
"Returns the max possible chip offset (in the ZIF socket)"
raise TOPException("Reimplement me")
def mapToZIF(self, offset, upsideDown):
"Tries to map the chip into the ZIF socket"
raise TOPException("Reimplement me")
def zifLayoutAsciiArt(self):
"Returns nice ascii ART of the mapped ZIF socket"
raise TOPException("Reimplement me")
def zifPinAssignments(self):
"Returns a string describing the pin assignments"
raise TOPException("Reimplement me")
def recalculate(self):
"Redo the mapping calculation"
for upsideDown in (False, True):
offset = self.maxOffset(upsideDown)
while offset >= 0:
try:
self.mapToZIF(offset, upsideDown)
except (LayoutGenerator.MapError), e:
offset -= 1
continue
return
raise TOPException("Did not find a possible valid layout for the setup")
class LayoutGeneratorDIP(LayoutGenerator):
"Layout generator for DIP packages."
def __init__(self, nrPins):
LayoutGenerator.__init__(self)
self.nrPins = nrPins
def verifyPins(self):
LayoutGenerator.verifyPins(self)
if self.nrPins < 2 or self.nrPins > self.zifPins or self.nrPins % 2 != 0:
raise TOPException("Invalid DIP package")
if self.vccxPin < 1 or self.vccxPin > self.nrPins:
raise TOPException("Invalid VCCX pin number for the selected package")
if self.vppPin < 1 or self.vppPin > self.nrPins:
raise TOPException("Invalid VPP pin number for the selected package")
if self.gndPin < 1 or self.gndPin > self.nrPins:
raise TOPException("Invalid GND pin number for the selected package")
def maxOffset(self, upsideDown):
return self.zifPins // 2 - self.nrPins // 2
def mapToZIF(self, offset, upsideDown):
if offset < 0 or offset > self.maxOffset(upsideDown):
raise self.MapError()
#print "Probing offset " + str(offset) + " upside-down=" + str(upsideDown)
zifVccx = self.__pin2zif(self.vccxPin, offset, upsideDown)
zifVpp = self.__pin2zif(self.vppPin, offset, upsideDown)
zifGnd = self.__pin2zif(self.gndPin, offset, upsideDown)
for (id, vccxBitmask) in self.vccxLayout.supportedLayouts():
if (1 << (zifVccx - 1)) == vccxBitmask:
break
else:
raise self.MapError()
for (id, vppBitmask) in self.vppLayout.supportedLayouts():
if (1 << (zifVpp - 1)) & vppBitmask:
break
else:
raise self.MapError()
for (id, gndBitmask) in self.gndLayout.supportedLayouts():
if (1 << (zifGnd - 1)) == gndBitmask:
break
else:
raise self.MapError()
# Store the values
self.result_upsideDown = upsideDown
self.result_offset = offset
self.result_vccxBitmask = vccxBitmask
self.result_vppBitmask = vppBitmask
self.result_gndBitmask = gndBitmask
def __pin2zif(self, dipPin, offset, upsideDown):
if upsideDown:
if dipPin > self.nrPins // 2:
# Right side of DIP
dipPin -= self.nrPins // 2
return dipPin + offset
else:
# Left side of DIP
return self.zifPins - self.nrPins // 2 + dipPin - offset
else:
if dipPin > self.nrPins // 2:
# Right side of DIP
dipPin -= self.nrPins // 2
return self.zifPins - self.nrPins // 2 + dipPin - offset
else:
# Left side of DIP
return dipPin + offset
def zifLayoutAsciiArt(self):
ret = "T ZIF socket\n"
ret += "^--o==============o\n"
for zp in range(1, self.zifPins // 2 + 1):
if zp < self.result_offset + 1 or \
zp > self.result_offset + self.nrPins // 2:
ret += "%2d |----- || -----| %2d\n" %\
(zp, self.zifPins + 1 - zp)
else:
if zp == self.result_offset + 1 and \
not self.result_upsideDown:
ret += "%2d |-- 1##..##o --| %2d\n" %\
(zp, self.zifPins + 1 - zp)
elif zp == self.result_offset + self.nrPins // 2 and \
self.result_upsideDown:
ret += "%2d |-- o##''##1 --| %2d\n" %\
(zp, self.zifPins + 1 - zp)
else:
ret += "%2d |-- o######o --| %2d\n" %\
(zp, self.zifPins + 1 - zp)
ret += " o==============o\n"
return ret
def zifPinAssignments(self):
ret = "VCCX ZIF pins: " + self.__bitmask2zifList(self.result_vccxBitmask) + "\n"
ret += "VPP ZIF pins: " + self.__bitmask2zifList(self.result_vppBitmask) + "\n"
ret += "GND ZIF pins: " + self.__bitmask2zifList(self.result_gndBitmask) + "\n"
return ret
def __bitmask2zifList(self, bitmask):
ret = ""
for bit in range(0, self.zifPins):
if bitmask & (1 << bit):
if ret:
ret += ","
ret += str(bit + 1)
return ret
|
