3 OpenOCD RPC example, covered by GNU GPLv3 or later
4 Copyright (C) 2014 Andreas Ortmann (ortmann@finf.uni-hannover.de)
12 target halted due to debug-request, current mode: Thread
13 xPSR: 0x01000000 pc: 0x00000188 msp: 0x10000fd8
15 variable @ 0x10000000: 0x01c9c380
17 variable @ 0x10000000: 0xdeadc0de
19 memory (before): ['0xdeadc0de', '0x00000011', '0xaaaaaaaa', '0x00000023',
20 '0x00000042', '0x0000ffff']
22 memory (after): ['0x00000001', '0x00000000', '0xaaaaaaaa', '0x00000023',
23 '0x00000042', '0x0000ffff']
30 return map(strToHex
, data
) if isinstance(data
, list) else int(data
, 16)
33 return "<None>" if data
is None else ("0x%08x" % data
)
35 def compareData(a
, b
):
36 for i
, j
, num
in zip(a
, b
, itertools
.count(0)):
38 print("difference at %d: %s != %s" % (num
, hexify(i
), hexify(j
)))
42 COMMAND_TOKEN
= '\x1a'
43 def __init__(self
, verbose
=False):
44 self
.verbose
= verbose
45 self
.tclRpcIp
= "127.0.0.1"
46 self
.tclRpcPort
= 6666
47 self
.bufferSize
= 4096
49 self
.sock
= socket
.socket(socket
.AF_INET
, socket
.SOCK_STREAM
)
55 def __exit__(self
, type, value
, traceback
):
59 self
.sock
.connect((self
.tclRpcIp
, self
.tclRpcPort
))
68 """Send a command string to TCL RPC. Return the result that was read."""
69 data
= (cmd
+ OpenOcd
.COMMAND_TOKEN
).encode("utf-8")
77 """Read from the stream until the token (\x1a) was received."""
80 chunk
= self
.sock
.recv(self
.bufferSize
)
82 if bytes(OpenOcd
.COMMAND_TOKEN
, encoding
="utf-8") in chunk
:
88 data
= data
.decode("utf-8").strip()
89 data
= data
[:-1] # strip trailing \x1a
93 def readVariable(self
, address
):
94 raw
= self
.send("mdw 0x%x" % address
).split(": ")
95 return None if (len(raw
) < 2) else strToHex(raw
[1])
97 def readMemory(self
, wordLen
, address
, n
):
98 output
= self
.send("read_memory 0x%x %d %d" % (address
, wordLen
, n
))
99 return [*map(lambda x
: int(x
, 16), output
.split(" "))]
101 def writeVariable(self
, address
, value
):
102 assert value
is not None
103 self
.send("mww 0x%x 0x%x" % (address
, value
))
105 def writeMemory(self
, wordLen
, address
, data
):
106 data
= "{" + ' '.join(['0x%x' % x
for x
in data
]) + "}"
107 self
.send("write_memory 0x%x %d %s" % (address
, wordLen
, data
))
109 if __name__
== "__main__":
112 print(*args
, end
="\n\n")
114 with
OpenOcd() as ocd
:
117 show(ocd
.send("capture { echo \"echo says hi!\" }")[:-1])
118 show(ocd
.send("capture \"halt\"")[:-1])
120 # Read the first few words at the RAM region (put starting address of RAM
121 # region into 'addr')
124 value
= ocd
.readVariable(addr
)
125 show("variable @ %s: %s" % (hexify(addr
), hexify(value
)))
127 ocd
.writeVariable(addr
, 0xdeadc0de)
128 show("variable @ %s: %s" % (hexify(addr
), hexify(ocd
.readVariable(addr
))))
130 data
= [1, 0, 0xaaaaaaaa, 0x23, 0x42, 0xffff]
134 read
= ocd
.readMemory(wordlen
, addr
, n
)
135 show("memory (before):", list(map(hexify
, read
)))
137 ocd
.writeMemory(wordlen
, addr
, n
, data
)
139 read
= ocd
.readMemory(wordlen
, addr
, n
)
140 show("memory (after):", list(map(hexify
, read
)))
142 compareData(read
, data
)