Mercurial > avr_jtag

annotate py_avrjtag/jtagdev.py @ 8:074e860d7d31

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jtagdev is a desktop client to communicate with jtag device through Arduino.
author Thinker K.F. Li <thinker@branda.to>
date Sun, 22 Feb 2009 22:30:20 +0800
parents
children cc106f278d7d
rev   line source
8
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
1 import tms_ptns
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
2 import cmd_proto
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
3
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
4 class jtagdev(object):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
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diff changeset
5 ST_REST = 0
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
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diff changeset
6 ST_IDLE = 1
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
7 ST_SHIFT_DR = 2
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
8 ST_SHIFT_IR = 3
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
9
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
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diff changeset
10 def __init__(self, fo):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
11 self.fo = fo
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
12 self.state = self.IDLE
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
13 self.seq = 0
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
14 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
15
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
16 def _send_cmd(self, code, data):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
17 cmd = cmd_proto.cmd(self.seq, code, data)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
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diff changeset
18 frame = cmd.to_frame()
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
19
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
20 self.fo.write(frame)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
21 self.fo.flush()
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
22 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
23
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
24 def _send_nbits_data_cmd(self, code, nbits, data):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
25 nbits_data = cmd_proto.prepend_nbits(nbits, data)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
26 self._send_cmd(code, nbits_data)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
27 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
28
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
29 def _send_tms(self, ptn, nbits):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
30 self._send_nbits_data_cmd(cmd_proto.CPCMD_SHIFT_TMS,
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
31 nbits, ptn)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
32 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
33
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
34 def wait_reply(self, tmo=None):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
35 import select
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
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diff changeset
36
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
37 if tmo is None:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
38 select.select((self.fo,), (), ())
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
39 else:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
40 select.select((self.fo,), (), (), tmo)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
41 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
42 frame = self.fo.read()
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
43 cmd = cmd_proto.cmd()
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
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diff changeset
44 cmd.from_frame(frame)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
45 return cmd
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
46
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
47 def idle(self):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
48 self.seq = (self.seq + 1) % 256
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
49
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
50 ptn, nbits = tms_ptns.TMS_IDLE_SEQ
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
51 self.send_tms(ptn, nbits)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
52
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
53 self.state = self.ST_IDLE
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
54 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
55
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
56 def go_shift_IR(self):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
57 if self.state == self.ST_SHIFT_IR:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
58 return
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
59
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
60 if self.state == self.ST_IDLE:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
61 ptn, ptn_nbits = tms_ptns.TMS_CAP_IR
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
62 self.send_tms(ptn, nbits)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
63 elif self.state == self.ST_SHIFT_DR:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
64 ptn, ptn_nbits = tms_ptns.TMS_SHIFT_DR_2_CAP_IR
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
65 self.send_tms(ptn, nbits)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
66 else:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
67 raise RuntimeError, 'Transite to shift IR state from invalid state'
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
68 self.state = self.ST_SHIFT_IR
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
69 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
70
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
71 def go_shift_DR(self):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
72 if self.state == self.ST_SHIFT_DR:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
73 return
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
74
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
75 if self.state == self.ST_IDLE:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
76 ptn, ptn_nbits = tms_ptns.TMS_CAP_DR
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
77 self.send_tms(ptn, nbits)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
78 elif self.state == self.ST_SHIFT_IR:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
79 ptn, ptn_nbits = tms_ptns.TMS_SHIFT_IR_2_CAP_DR
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
80 self.send_tms(ptn, nbits)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
81 else:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
82 raise RuntimeError, 'Transite to shift DR state from invalid state'
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
83 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
84 self.state = self.ST_SHIFT_DR
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
85 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
86
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
87 def shift_IR(self, data, nbits):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
88 self.seq = (self.seq + 1) % 256
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
89
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
90 if self.state != self.ST_SHIFT_IR:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
91 raise RuntimeError, 'Invalid state'
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
92
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
93 self._send_nbits_data_cmd(cmd_proto.CPCMD_SHIFT_TDI,
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
94 nbits, data)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
95 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
96
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
97 def shift_DR(self, data, nbits):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
98 self.seq = (self.seq + 1) % 256
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
99
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
100 if self.state != self.ST_SHIFT_DR:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
101 raise RuntimeError, 'Invalid state'
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
102
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
103 self._send_nbits_data_cmd(cmd_proto.CPCMD_SHIFT_TDI,
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
104 nbits, data)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
105 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
106
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
107 def shift_DR_n_out(self, data, nbits):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
108 self.seq = (self.seq + 1) % 256
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
109
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
110 if self.state != self.ST_SHIFT_DR:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
111 raise RuntimeError, 'Invalid state'
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
112
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
113 self._send_nbits_data_cmd(cmd_proto.CPCMD_SHIFT_TDI_TDO,
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
114 nbits, data)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
115 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
116
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
117 def reset(self):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
118 self._send_cmd(cmd_proto.CPCMD_TRST, '')
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
119 self.state = self.ST_RESET
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
120 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
121 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
122
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
123 def _extract_nbits_data(nbits_data):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
124 nbits = ord(nbits_data[0]) | (ord(nbits_data[1] << 8))
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
125 return nbits, nbits_data[2:]
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
126
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
127 def _get_bit(data, bit_idx):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
128 byte_off = bit_idx / 8
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
129 bit_off = bit_idx % 8
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
130 return (ord(data[byte_off]) >> bit_off) & 0x1
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
131
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
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132 def identify_components(dev):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
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133 dev.go_shift_IR()
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
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134 reply = dev.wait_reply()
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
135 if reply.code != cmd_proto.CPCMD_ACK:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
136 raise RutimeError, 'invliad reply code 0x%02x' % (reply.code)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
137
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
138 dev.go_shift_DR()
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
139 dev.shift_DR('\xff' * 253, 253 * 8)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
140 reply = dev.wait_reply()
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
141 if reply.code != cmd_proto.CPCMD_DATA:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
142 raise RutimeError, 'invliad reply code 0x%02x' % (reply.code)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
143
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
144 nbits, data = _extract_nbits_data(reply.data)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
145
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
146 components = []
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
147 i = 0
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
148 while i < nbits:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
149 bit = _get_bit(data, i)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
150 if bit == 0:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
151 components.append(0)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
152 i = i + 1
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
153 else:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
154 comp_id = 0
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
155 for j in range(32):
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
156 bit = _get_bit(data, i + j)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
157 comp_id = comp_id | (bit << j)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
158 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
159 if comp_id == 0xffffffff:
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
160 break
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
161 components.append(comp_id)
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
162 i = i + 32
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
163 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
164 pass
074e860d7d31 jtagdev is a desktop client to communicate with jtag device through Arduino.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
165 return components