root / trunk / programmer / netprog.py @ 303
History | View | Annotate | Download (3.64 KB)
1 |
#!/usr/bin/python
|
---|---|
2 |
import sys |
3 |
import serial |
4 |
import sys |
5 |
sys.path.append('../common')
|
6 |
import common |
7 |
|
8 |
MAX_PROG_SIZE = 1024-32 |
9 |
|
10 |
DUMB_SERIAL = 0
|
11 |
|
12 |
MAX_DATA_LEN = common.MAX_PAYLOAD_LEN |
13 |
|
14 |
if len(sys.argv) < 4: |
15 |
print "usage: netprog.py /path/to/bus/device toolnum binaryfile" |
16 |
exit(1) |
17 |
|
18 |
#for testing, tool number 3 hardcoded
|
19 |
class dumbBus (serial.Serial): |
20 |
def __init__(self): |
21 |
self.step = 0 |
22 |
def flushInput(self): |
23 |
pass
|
24 |
def write(self, s): |
25 |
print '>', |
26 |
def read(self, n): |
27 |
if n == 5: |
28 |
if self.step == 0: |
29 |
#print ord('^'), 3,1,ord(common.TT_BOOT), (3 ^ 1 ^ ord(common.TT_BOOT))
|
30 |
print '<', |
31 |
self.step += 1 |
32 |
return '^' + chr(3) + chr(1) + common.TT_BOOT + chr(3 ^ 1 ^ ord(common.TT_BOOT)) |
33 |
else:
|
34 |
#print ord('^'), 3,1,ord(common.TT_ACK), (3 ^ 1 ^ ord(common.TT_ACK))
|
35 |
print '<', |
36 |
return '^' + chr(3) + chr(1) + common.TT_ACK + chr(3 ^ 1 ^ ord(common.TT_ACK)) |
37 |
else:
|
38 |
return 0 |
39 |
|
40 |
common.initBus(sys.argv[1], timeout=10) |
41 |
|
42 |
def sendCommand(t, cmd): |
43 |
common.sendMessage(t,cmd,"")
|
44 |
|
45 |
def sendProgram(t, size): |
46 |
if size > 65535: |
47 |
print "ERROR: program too big!!" |
48 |
|
49 |
def lsb(s): return s & 0xFF |
50 |
def msb(s): return (s>>8) & 0xFF |
51 |
|
52 |
print "sending P" |
53 |
common.sendMessage(t,common.TT_PROGRAM_MODE,chr(lsb(size))+chr(msb(size))) |
54 |
|
55 |
dCount = 0
|
56 |
|
57 |
def sendData(t, data): |
58 |
#PROGD messages must be 32 bytes, so expand if neccesary
|
59 |
n = len(data)
|
60 |
while n < MAX_DATA_LEN:
|
61 |
data = data + chr(0) |
62 |
n = n + 1
|
63 |
|
64 |
common.sendMessage(t,common.TT_PROGD,data) |
65 |
print '.', |
66 |
sys.stdout.flush() |
67 |
|
68 |
toolID = int(sys.argv[2]) |
69 |
|
70 |
print "sending file: ", sys.argv[3], " to tool ", toolID |
71 |
|
72 |
fin = open(sys.argv[3], "r") |
73 |
fin.seek(0,2) |
74 |
flen = fin.tell() |
75 |
fin.seek(0,0) |
76 |
|
77 |
if flen > MAX_PROG_SIZE:
|
78 |
print "Program too Large!" |
79 |
print "prog size:",flen |
80 |
print "max size:",MAX_PROG_SIZE |
81 |
exit(-1) |
82 |
|
83 |
print "prog size:",flen |
84 |
|
85 |
print "sending RESET" |
86 |
sendCommand(toolID, common.TT_RESET) |
87 |
|
88 |
print "waiting for boot packet..." |
89 |
|
90 |
m = common.readMessage() |
91 |
|
92 |
if m == None: |
93 |
print "Didn't get a packet (timeout?), bailing out" |
94 |
exit(-4) |
95 |
|
96 |
[src,dest,cmd,data] = m |
97 |
if cmd != common.TT_BOOT:
|
98 |
print "Didn't get a boot packet, bailing out" |
99 |
print "got", cmd |
100 |
exit(-4) |
101 |
else:
|
102 |
print "got boot packet from " + str(ord(src)) |
103 |
|
104 |
r = 0
|
105 |
while r != common.TT_ACK:
|
106 |
sendProgram(toolID, flen) |
107 |
m = common.readMessage() |
108 |
if m == None: |
109 |
print "ERROR: probably a timeout" |
110 |
exit(-1) |
111 |
[src, dest, r, data] = m |
112 |
if r == common.TT_NACK:
|
113 |
print "WARNING: got NACK, trying again" |
114 |
elif r == common.TT_BOOT:
|
115 |
print "ERROR: got stray boot packet" |
116 |
#TODO: restart the whole state machine after the boot packet
|
117 |
exit(-2) |
118 |
elif r != common.TT_ACK:
|
119 |
print "ERROR: got another packet:",r |
120 |
exit(-1) |
121 |
|
122 |
print 'sending data', |
123 |
sys.stdout.flush() |
124 |
while True: |
125 |
data = fin.read(MAX_DATA_LEN) |
126 |
#print data
|
127 |
#print '-------------------'
|
128 |
if len(data) == 0: |
129 |
break
|
130 |
|
131 |
r = 0
|
132 |
while r != common.TT_ACK:
|
133 |
sendData(toolID, data) |
134 |
m = common.readMessage() |
135 |
if m == None: |
136 |
print "ERROR: probably a timeout" |
137 |
exit(-1) |
138 |
[src, dest, r, data] = m |
139 |
|
140 |
if r == common.TT_NACK:
|
141 |
print "WARNING: got NACK, trying again" |
142 |
elif r == common.TT_BOOT:
|
143 |
print "ERROR: got stray boot packet from "+str(ord(src)) |
144 |
#TODO: restart the whole state machine after the boot packet
|
145 |
exit(-2) |
146 |
elif r != common.TT_ACK:
|
147 |
print "ERROR: got another packet:",r |
148 |
exit(-1) |