git.rot13.org Git - goodfet/blob - client/GoodFET.py

   1 #!/usr/bin/env python
   2 # GoodFET Client Library
   3 #
   4 # (C) 2009 Travis Goodspeed <travis at radiantmachines.com>
   5 #
   6 # This code is being rewritten and refactored.  You've been warned!
   7
   8 import sys, time, string, cStringIO, struct, glob, os;
   9 import sqlite3;
  10
  11 fmt = ("B", "<H", None, "<L")
  12
  13 def getClient(name="GoodFET"):
  14     import GoodFET, GoodFETCC, GoodFETAVR, GoodFETSPI, GoodFETMSP430, GoodFETNRF, GoodFETCCSPI;
  15     if(name=="GoodFET" or name=="monitor"): return GoodFET.GoodFET();
  16     elif name=="cc" or name=="cc51": return GoodFETCC.GoodFETCC();
  17     elif name=="cc2420" or name=="ccspi": return GoodFETCCSPI.GoodFETCCSPI();
  18     elif name=="avr": return GoodFETAVR.GoodFETAVR();
  19     elif name=="spi": return GoodFETSPI.GoodFETSPI();
  20     elif name=="msp430": return GoodFETMSP430.GoodFETMSP430();
  21     elif name=="nrf": return GoodFETNRF.GoodFETNRF();
  22
  23     print "Unsupported target: %s" % name;
  24     sys.exit(0);
  25
  26 class SymbolTable:
  27     """GoodFET Symbol Table"""
  28     db=sqlite3.connect(":memory:");
  29
  30     def __init__(self, *args, **kargs):
  31         self.db.execute("create table if not exists symbols(adr,name,memory,size,comment);");
  32     def get(self,name):
  33         self.db.commit();
  34         c=self.db.cursor();
  35         try:
  36             c.execute("select adr,memory from symbols where name=?",(name,));
  37             for row in c:
  38                 #print "Found it.";
  39                 sys.stdout.flush();
  40                 return row[0];
  41             #print "No dice.";
  42         except:# sqlite3.OperationalError:
  43             #print "SQL error.";
  44             return eval(name);
  45         return eval(name);
  46     def define(self,adr,name,comment="",memory="vn",size=16):
  47         self.db.execute("insert into symbols(adr,name,memory,size,comment)"
  48                         "values(?,?,?,?,?);", (
  49                 adr,name,memory,size,comment));
  50         #print "Set %s=%s." % (name,adr);
  51 class GoodFETbtser:
  52     """py-bluez class for emulating py-serial."""
  53     def __init__(self,btaddr):
  54         import bluetooth;
  55         while btaddr==None or btaddr=="none" or btaddr=="bluetooth":
  56             print "performing inquiry..."
  57             nearby_devices = bluetooth.discover_devices(lookup_names = True)
  58             print "found %d devices" % len(nearby_devices)
  59             for addr, name in nearby_devices:
  60                 print "  %s - '%s'" % (addr, name)
  61                 if name=='FireFly-A6BD':
  62                     btaddr=addr;
  63         print "Identified GoodFET at %s" % btaddr;
  64
  65         # BlueFET doesn't run the Service Discovery Protocol.
  66         # Instead we manually use the portnumber.
  67         port=1;
  68
  69         print "Connecting to %s on port %i." % (btaddr, port);
  70         sock=bluetooth.BluetoothSocket(bluetooth.RFCOMM);
  71         self.sock=sock;
  72         sock.connect((btaddr,port));
  73         sock.settimeout(10);  #IMPORTANT Must be patient.
  74
  75         ##This is what we'd do for a normal reset.
  76         #str="";
  77         #while not str.endswith("goodfet.sf.net/"):
  78         #    str=self.read(64);
  79         #    print str;
  80
  81         # Instead, just return and hope for the best.
  82         return;
  83
  84     def write(self,msg):
  85         """Send traffic."""
  86         import time;
  87         time.sleep(0.1);
  88         return self.sock.send(msg);
  89     def read(self,length):
  90         """Read traffic."""
  91         data="";
  92         while len(data)<length:
  93             data=data+self.sock.recv(length-len(data));
  94         return data;
  95 class GoodFET:
  96     """GoodFET Client Library"""
  97
  98     besilent=0;
  99     app=0;
 100     verb=0;
 101     count=0;
 102     data="";
 103     verbose=False
 104
 105     GLITCHAPP=0x71;
 106     MONITORAPP=0x00;
 107     symbols=SymbolTable();
 108
 109     def __init__(self, *args, **kargs):
 110         self.data=[0];
 111     def getConsole(self):
 112         from GoodFETConsole import GoodFETConsole;
 113         return GoodFETConsole(self);
 114     def name2adr(self,name):
 115         return self.symbols.get(name);
 116     def timeout(self):
 117         print "timeout\n";
 118     def serInit(self, port=None, timeout=2, attemptlimit=None):
 119         """Open a serial port of some kind."""
 120         import re;
 121
 122         if port==None:
 123             port=os.environ.get("GOODFET");
 124         if port=="bluetooth" or (port is not None and re.match("..:..:..:..:..:..",port)):
 125             self.btInit(port,timeout,attemptlimit);
 126         else:
 127             self.pyserInit(port,timeout,attemptlimit);
 128     def btInit(self, port, timeout, attemptlimit):
 129         """Open a bluetooth port.""";
 130         #self.verbose=True;  #For debugging BT.
 131         self.serialport=GoodFETbtser(port);
 132
 133     def pyserInit(self, port, timeout, attemptlimit):
 134         """Open the serial port"""
 135         # Make timeout None to wait forever, 0 for non-blocking mode.
 136         import serial;
 137
 138         if os.name=='nt' and sys.version.find('64 bit')!=-1:
 139             print "WARNING: PySerial requires a 32-bit Python build in Windows.";
 140
 141         if port is None and os.environ.get("GOODFET")!=None:
 142             glob_list = glob.glob(os.environ.get("GOODFET"));
 143             if len(glob_list) > 0:
 144                 port = glob_list[0];
 145             else:
 146                 port = os.environ.get("GOODFET");
 147         if port is None:
 148             glob_list = glob.glob("/dev/tty.usbserial*");
 149             if len(glob_list) > 0:
 150                 port = glob_list[0];
 151         if port is None:
 152             glob_list = glob.glob("/dev/ttyUSB*");
 153             if len(glob_list) > 0:
 154                 port = glob_list[0];
 155         if port is None:
 156             glob_list = glob.glob("/dev/ttyU0");
 157             if len(glob_list) > 0:
 158                 port = glob_list[0];
 159         if port is None and os.name=='nt':
 160             from scanwin32 import winScan;
 161             scan=winScan();
 162             for order,comport,desc,hwid in sorted(scan.comports()):
 163                 try:
 164                     if hwid.index('FTDI')==0:
 165                         port=comport;
 166                         #print "Using FTDI port %s" % port
 167                 except:
 168                     #Do nothing.
 169                     a=1;
 170
 171         baud=115200;
 172         if(os.environ.get("platform")=='arduino'):
 173             baud=19200; #Slower, for now.
 174         self.serialport = serial.Serial(
 175             port,
 176             #9600,
 177             baud,
 178             parity = serial.PARITY_NONE,
 179             timeout=timeout
 180             )
 181
 182         self.verb=0;
 183         attempts=0;
 184         connected=0;
 185         while connected==0:
 186             while self.verb!=0x7F or self.data!="http://goodfet.sf.net/":
 187             #while self.data!="http://goodfet.sf.net/":
 188                 #print "'%s'!=\n'%s'" % (self.data,"http://goodfet.sf.net/");
 189                 if attemptlimit is not None and attempts >= attemptlimit:
 190                     return
 191                 elif attempts>2:
 192                     print "Resyncing.";
 193                 self.serialport.flushInput()
 194                 self.serialport.flushOutput()
 195
 196                 #TelosB reset, prefer software to I2C SPST Switch.
 197                 if(os.environ.get("platform")=='telosb'):
 198                     #print "TelosB Reset";
 199                     self.telosBReset();
 200                 else:
 201                     #Explicitly set RTS and DTR to halt board.
 202                     self.serialport.setRTS(1);
 203                     self.serialport.setDTR(1);
 204                     #Drop DTR, which is !RST, low to begin the app.
 205                     self.serialport.setDTR(0);
 206
 207                 #self.serialport.write(chr(0x80));
 208                 #self.serialport.write(chr(0x80));
 209                 #self.serialport.write(chr(0x80));
 210                 #self.serialport.write(chr(0x80));
 211
 212
 213                 #self.serialport.flushInput()
 214                 #self.serialport.flushOutput()
 215                 #time.sleep(60);
 216                 attempts=attempts+1;
 217                 self.readcmd(); #Read the first command.
 218                 #print "Got %02x,%02x:'%s'" % (self.app,self.verb,self.data);
 219             #Here we have a connection, but maybe not a good one.
 220             #print "We have a connection."
 221             connected=1;
 222             olds=self.infostring();
 223             clocking=self.monitorclocking();
 224             #if(os.environ.get("platform")!='arduino'):
 225             for foo in range(1,30):
 226                 if not self.monitorecho():
 227                     if self.verbose:
 228                         print "Comm error on %i try, resyncing out of %s." % (foo,
 229                                                                               clocking);
 230                         connected=0;
 231                         break;
 232         if self.verbose: print "Connected after %02i attempts." % attempts;
 233         self.mon_connected();
 234         self.serialport.setTimeout(12);
 235     def serClose(self):
 236         self.serialport.close();
 237     def telosSetSCL(self, level):
 238         self.serialport.setRTS(not level)
 239     def telosSetSDA(self, level):
 240         self.serialport.setDTR(not level)
 241
 242     def telosI2CStart(self):
 243         self.telosSetSDA(1)
 244         self.telosSetSCL(1)
 245         self.telosSetSDA(0)
 246
 247     def telosI2CStop(self):
 248         self.telosSetSDA(0)
 249         self.telosSetSCL(1)
 250         self.telosSetSDA(1)
 251
 252     def telosI2CWriteBit(self, bit):
 253         self.telosSetSCL(0)
 254         self.telosSetSDA(bit)
 255         time.sleep(2e-6)
 256         self.telosSetSCL(1)
 257         time.sleep(1e-6)
 258         self.telosSetSCL(0)
 259
 260     def telosI2CWriteByte(self, byte):
 261         self.telosI2CWriteBit( byte & 0x80 );
 262         self.telosI2CWriteBit( byte & 0x40 );
 263         self.telosI2CWriteBit( byte & 0x20 );
 264         self.telosI2CWriteBit( byte & 0x10 );
 265         self.telosI2CWriteBit( byte & 0x08 );
 266         self.telosI2CWriteBit( byte & 0x04 );
 267         self.telosI2CWriteBit( byte & 0x02 );
 268         self.telosI2CWriteBit( byte & 0x01 );
 269         self.telosI2CWriteBit( 0 );  # "acknowledge"
 270
 271     def telosI2CWriteCmd(self, addr, cmdbyte):
 272         self.telosI2CStart()
 273         self.telosI2CWriteByte( 0x90 | (addr << 1) )
 274         self.telosI2CWriteByte( cmdbyte )
 275         self.telosI2CStop()
 276
 277     def telosBReset(self,invokeBSL=0):
 278         # "BSL entry sequence at dedicated JTAG pins"
 279         # rst !s0: 0 0 0 0 1 1
 280         # tck !s1: 1 0 1 0 0 1
 281         #   s0|s1: 1 3 1 3 2 0
 282
 283         # "BSL entry sequence at shared JTAG pins"
 284         # rst !s0: 0 0 0 0 1 1
 285         # tck !s1: 0 1 0 1 1 0
 286         #   s0|s1: 3 1 3 1 0 2
 287
 288         if invokeBSL:
 289             self.telosI2CWriteCmd(0,1)
 290             self.telosI2CWriteCmd(0,3)
 291             self.telosI2CWriteCmd(0,1)
 292             self.telosI2CWriteCmd(0,3)
 293             self.telosI2CWriteCmd(0,2)
 294             self.telosI2CWriteCmd(0,0)
 295         else:
 296             self.telosI2CWriteCmd(0,3)
 297             self.telosI2CWriteCmd(0,2)
 298
 299         # This line was not defined inside the else: block, not sure where it
 300         # should be however
 301         self.telosI2CWriteCmd(0,0)
 302         time.sleep(0.250)       #give MSP430's oscillator time to stabilize
 303         self.serialport.flushInput()  #clear buffers
 304
 305
 306     def getbuffer(self,size=0x1c00):
 307         writecmd(0,0xC2,[size&0xFF,(size>>16)&0xFF]);
 308         print "Got %02x%02x buffer size." % (self.data[1],self.data[0]);
 309     def writecmd(self, app, verb, count=0, data=[]):
 310         """Write a command and some data to the GoodFET."""
 311         self.serialport.write(chr(app));
 312         self.serialport.write(chr(verb));
 313
 314         #if data!=None:
 315         #    count=len(data); #Initial count ignored.
 316
 317         #print "TX %02x %02x %04x" % (app,verb,count);
 318
 319         #little endian 16-bit length
 320         self.serialport.write(chr(count&0xFF));
 321         self.serialport.write(chr(count>>8));
 322
 323         if self.verbose:
 324             print "Tx: ( 0x%02x, 0x%02x, 0x%04x )" % ( app, verb, count )
 325
 326         #print "count=%02x, len(data)=%04x" % (count,len(data));
 327
 328         if count!=0:
 329             if(isinstance(data,list)):
 330                 for i in range(0,count):
 331                 #print "Converting %02x at %i" % (data[i],i)
 332                     data[i]=chr(data[i]);
 333             #print type(data);
 334             outstr=''.join(data);
 335             self.serialport.write(outstr);
 336         if not self.besilent:
 337             return self.readcmd()
 338         else:
 339             return []
 340
 341     def readcmd(self):
 342         """Read a reply from the GoodFET."""
 343         while 1:#self.serialport.inWaiting(): # Loop while input data is available
 344             try:
 345                 #print "Reading...";
 346                 self.app=ord(self.serialport.read(1));
 347                 #print "APP=%02x" % self.app;
 348                 self.verb=ord(self.serialport.read(1));
 349
 350                 #Fixes an obscure bug in the TelosB.
 351                 if self.app==0x00:
 352                     while self.verb==0x00:
 353                         self.verb=ord(self.serialport.read(1));
 354
 355                 #print "VERB=%02x" % self.verb;
 356                 self.count=(
 357                     ord(self.serialport.read(1))
 358                     +(ord(self.serialport.read(1))<<8)
 359                     );
 360
 361                 if self.verbose:
 362                     print "Rx: ( 0x%02x, 0x%02x, 0x%04x )" % ( self.app, self.verb, self.count )
 363
 364                 #Debugging string; print, but wait.
 365                 if self.app==0xFF:
 366                     if self.verb==0xFF:
 367                         print "# DEBUG %s" % self.serialport.read(self.count)
 368                     elif self.verb==0xFE:
 369                         print "# DEBUG 0x%x" % struct.unpack(fmt[self.count-1], self.serialport.read(self.count))[0]
 370                     elif self.verb==0xFD:
 371                         #Do nothing, just wait so there's no timeout.
 372                         print "# NOP.";
 373
 374                     sys.stdout.flush();
 375                 else:
 376                     self.data=self.serialport.read(self.count);
 377                     return self.data;
 378             except TypeError:
 379                 if self.connected:
 380                     print "Warning: waiting for serial read timed out (most likely).";
 381                     #print "This shouldn't happen after syncing.  Exiting for safety.";
 382                     #sys.exit(-1)
 383                 return self.data;
 384     #Glitching stuff.
 385     def glitchApp(self,app):
 386         """Glitch into a device by its application."""
 387         self.data=[app&0xff];
 388         self.writecmd(self.GLITCHAPP,0x80,1,self.data);
 389         #return ord(self.data[0]);
 390     def glitchVerb(self,app,verb,data):
 391         """Glitch during a transaction."""
 392         if data==None: data=[];
 393         self.data=[app&0xff, verb&0xFF]+data;
 394         self.writecmd(self.GLITCHAPP,0x81,len(self.data),self.data);
 395         #return ord(self.data[0]);
 396     def glitchstart(self):
 397         """Glitch into the AVR application."""
 398         self.glitchVerb(self.APP,0x20,None);
 399     def glitchstarttime(self):
 400         """Measure the timer of the START verb."""
 401         return self.glitchTime(self.APP,0x20,None);
 402     def glitchTime(self,app,verb,data):
 403         """Time the execution of a verb."""
 404         if data==None: data=[];
 405         self.data=[app&0xff, verb&0xFF]+data;
 406         print "Timing app %02x verb %02x." % (app,verb);
 407         self.writecmd(self.GLITCHAPP,0x82,len(self.data),self.data);
 408         time=ord(self.data[0])+(ord(self.data[1])<<8);
 409         print "Timed to be %i." % time;
 410         return time;
 411     def glitchVoltages(self,low=0x0880, high=0x0fff):
 412         """Set glitching voltages. (0x0fff is max.)"""
 413         self.data=[low&0xff, (low>>8)&0xff,
 414                    high&0xff, (high>>8)&0xff];
 415         self.writecmd(self.GLITCHAPP,0x90,4,self.data);
 416         #return ord(self.data[0]);
 417     def glitchRate(self,count=0x0800):
 418         """Set glitching count period."""
 419         self.data=[count&0xff, (count>>8)&0xff];
 420         self.writecmd(self.GLITCHAPP,0x91,2,
 421                       self.data);
 422         #return ord(self.data[0]);
 423
 424
 425     #Monitor stuff
 426     def silent(self,s=0):
 427         """Transmissions halted when 1."""
 428         self.besilent=s;
 429         print "besilent is %i" % self.besilent;
 430         self.writecmd(0,0xB0,1,[s]);
 431     connected=0;
 432     def mon_connected(self):
 433         """Announce to the monitor that the connection is good."""
 434         self.connected=1;
 435         self.writecmd(0,0xB1,0,[]);
 436     def out(self,byte):
 437         """Write a byte to P5OUT."""
 438         self.writecmd(0,0xA1,1,[byte]);
 439     def dir(self,byte):
 440         """Write a byte to P5DIR."""
 441         self.writecmd(0,0xA0,1,[byte]);
 442     def call(self,adr):
 443         """Call to an address."""
 444         self.writecmd(0,0x30,2,
 445                       [adr&0xFF,(adr>>8)&0xFF]);
 446     def execute(self,code):
 447         """Execute supplied code."""
 448         self.writecmd(0,0x31,2,#len(code),
 449                       code);
 450     def MONpeek8(self,address):
 451         """Read a byte of memory from the monitor."""
 452         self.data=[address&0xff,address>>8];
 453         self.writecmd(0,0x02,2,self.data);
 454         #self.readcmd();
 455         return ord(self.data[0]);
 456     def MONpeek16(self,address):
 457         """Read a word of memory from the monitor."""
 458         return self.MONpeek8(address)+(self.MONpeek8(address+1)<<8);
 459     def peek(self,address):
 460         """Read a word of memory from the monitor."""
 461         return self.MONpeek8(address)+(self.MONpeek8(address+1)<<8);
 462     def eeprompeek(self,address):
 463         """Read a word of memory from the monitor."""
 464         print "EEPROM peeking not supported for the monitor.";
 465         #return self.MONpeek8(address)+(self.MONpeek8(address+1)<<8);
 466     def peekbysym(self,name):
 467         """Read a value by its symbol name."""
 468         #TODO include memory in symbol.
 469         reg=self.symbols.get(name);
 470         return self.peek8(reg,"data");
 471     def pokebysym(self,name,val):
 472         """Write a value by its symbol name."""
 473         #TODO include memory in symbol.
 474         reg=self.symbols.get(name);
 475         return self.pokebyte(reg,val);
 476     def pokebyte(self,address,value,memory="vn"):
 477         """Set a byte of memory by the monitor."""
 478         self.data=[address&0xff,address>>8,value];
 479         self.writecmd(0,0x03,3,self.data);
 480         return ord(self.data[0]);
 481     def poke16(self,address,value):
 482         """Set a word of memory by the monitor."""
 483         self.pokebyte(address,value&0xFF);
 484         self.pokebyte(address,(value>>8)&0xFF);
 485         return value;
 486     def setsecret(self,value):
 487         """Set a secret word for later retreival.  Used by glitcher."""
 488         #self.eeprompoke(0,value);
 489         #self.eeprompoke(1,value);
 490         print "Secret setting is not yet suppored for this target.";
 491         print "Aborting.";
 492
 493     def getsecret(self):
 494         """Get a secret word.  Used by glitcher."""
 495         #self.eeprompeek(0);
 496         print "Secret getting is not yet suppored for this target.";
 497         print "Aborting.";
 498         sys.exit();
 499
 500     def dumpmem(self,begin,end):
 501         i=begin;
 502         while i<end:
 503             print "%04x %04x" % (i, self.MONpeek16(i));
 504             i+=2;
 505     def monitor_ram_pattern(self):
 506         """Overwrite all of RAM with 0xBEEF."""
 507         self.writecmd(0,0x90,0,self.data);
 508         return;
 509     def monitor_ram_depth(self):
 510         """Determine how many bytes of RAM are unused by looking for 0xBEEF.."""
 511         self.writecmd(0,0x91,0,self.data);
 512         return ord(self.data[0])+(ord(self.data[1])<<8);
 513
 514     #Baud rates.
 515     baudrates=[115200,
 516                9600,
 517                19200,
 518                38400,
 519                57600,
 520                115200];
 521     def setBaud(self,baud):
 522         """Change the baud rate.  TODO fix this."""
 523         rates=self.baudrates;
 524         self.data=[baud];
 525         print "Changing FET baud."
 526         self.serialport.write(chr(0x00));
 527         self.serialport.write(chr(0x80));
 528         self.serialport.write(chr(1));
 529         self.serialport.write(chr(baud));
 530
 531         print "Changed host baud."
 532         self.serialport.setBaudrate(rates[baud]);
 533         time.sleep(1);
 534         self.serialport.flushInput()
 535         self.serialport.flushOutput()
 536
 537         print "Baud is now %i." % rates[baud];
 538         return;
 539     def readbyte(self):
 540         return ord(self.serialport.read(1));
 541     def findbaud(self):
 542         for r in self.baudrates:
 543             print "\nTrying %i" % r;
 544             self.serialport.setBaudrate(r);
 545             #time.sleep(1);
 546             self.serialport.flushInput()
 547             self.serialport.flushOutput()
 548
 549             for i in range(1,10):
 550                 self.readbyte();
 551
 552             print "Read %02x %02x %02x %02x" % (
 553                 self.readbyte(),self.readbyte(),self.readbyte(),self.readbyte());
 554     def monitortest(self):
 555         """Self-test several functions through the monitor."""
 556         print "Performing monitor self-test.";
 557         self.monitorclocking();
 558         for f in range(0,3000):
 559             a=self.MONpeek16(0x0c00);
 560             b=self.MONpeek16(0x0c02);
 561             if a!=0x0c04 and a!=0x0c06:
 562                 print "ERROR Fetched %04x, %04x" % (a,b);
 563             self.pokebyte(0x0021,0); #Drop LED
 564             if self.MONpeek8(0x0021)!=0:
 565                 print "ERROR, P1OUT not cleared.";
 566             self.pokebyte(0x0021,1); #Light LED
 567             if not self.monitorecho():
 568                 print "Echo test failed.";
 569         print "Self-test complete.";
 570         self.monitorclocking();
 571     def monitorecho(self):
 572         data="The quick brown fox jumped over the lazy dog.";
 573         self.writecmd(self.MONITORAPP,0x81,len(data),data);
 574         if self.data!=data:
 575             print "Comm error recognized by monitorecho(), got:\n%s" % self.data;
 576             return 0;
 577         return 1;
 578
 579     def monitor_info(self):
 580         print "GoodFET with %s MCU" % self.infostring();
 581         print "Clocked at %s" % self.monitorclocking();
 582         return 1;
 583
 584     def monitor_list_apps(self, full=False):
 585         self.monitor_info()
 586         old_value = self.besilent
 587         self.besilent = True    # turn off automatic call to readcmd
 588         self.writecmd(self.MONITORAPP, 0x82, 1, [int(full)]);
 589         self.besilent = old_value
 590
 591         # read the build date string
 592         self.readcmd()
 593         print "Build Date: %s" % self.data
 594         print "Firmware apps:"
 595         while True:
 596             self.readcmd()
 597             if self.count == 0:
 598                 break
 599             print self.data
 600         return 1;
 601
 602     def monitorclocking(self):
 603         """Return the 16-bit clocking value."""
 604         return "0x%04x" % self.monitorgetclock();
 605
 606     def monitorsetclock(self,clock):
 607         """Set the clocking value."""
 608         self.MONpoke16(0x56, clock);
 609     def monitorgetclock(self):
 610         """Get the clocking value."""
 611         if(os.environ.get("platform")=='arduino'):
 612             return 0xDEAD;
 613         #Check for MSP430 before peeking this.
 614         return self.MONpeek16(0x56);
 615     # The following functions ought to be implemented in
 616     # every client.
 617
 618     def infostring(self):
 619         if(os.environ.get("platform")=='arduino'):
 620             return "Arduino";
 621         else:
 622             a=self.MONpeek8(0xff0);
 623             b=self.MONpeek8(0xff1);
 624             return "%02x%02x" % (a,b);
 625     def lock(self):
 626         print "Locking Unsupported.";
 627     def erase(self):
 628         print "Erasure Unsupported.";
 629     def setup(self):
 630         return;
 631     def start(self):
 632         return;
 633     def test(self):
 634         print "Unimplemented.";
 635         return;
 636     def status(self):
 637         print "Unimplemented.";
 638         return;
 639     def halt(self):
 640         print "Unimplemented.";
 641         return;
 642     def resume(self):
 643         print "Unimplemented.";
 644         return;
 645     def getpc(self):
 646         print "Unimplemented.";
 647         return 0xdead;
 648     def flash(self,file):
 649         """Flash an intel hex file to code memory."""
 650         print "Flash not implemented.";
 651     def dump(self,file,start=0,stop=0xffff):
 652         """Dump an intel hex file from code memory."""
 653         print "Dump not implemented.";
 654     def peek32(self,address, memory="vn"):
 655         """Peek 32 bits."""
 656         return (self.peek16(address,memory)+
 657                 (self.peek16(address+2,memory)<<16));
 658     def peek16(self,address, memory="vn"):
 659         """Peek 16 bits of memory."""
 660         return (self.peek8(address,memory)+
 661                 (self.peek8(address+1,memory)<<8));
 662     def peek8(self,address, memory="vn"):
 663         """Peek a byte of memory."""
 664         return self.MONpeek8(address); #monitor
 665     def peekblock(self,address,length,memory="vn"):
 666         """Return a block of data."""
 667         data=range(0,length);
 668         for foo in range(0,length):
 669             data[foo]=self.peek8(address+foo,memory);
 670         return data;
 671     def pokeblock(self,address,bytes,memory="vn"):
 672         """Poke a block of a data into memory at an address."""
 673         for foo in bytes:
 674             self.pokebyte(address,foo,memory);
 675             address=address+1;
 676         return;
 677     def loadsymbols(self):
 678         """Load symbols from a file."""
 679         return;