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