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         if 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                 #TODO switch to wildcards.
  62                 if name=='FireFly-A6BD':
  63                     btaddr=addr;
  64                 if name=='RN42-A94A':
  65                     btaddr=addr;
  66
  67             print "Please set $GOODFET to the address of your device.";
  68             sys.exit();
  69         print "Identified GoodFET at %s" % btaddr;
  70
  71         # Manually use the portnumber.
  72         port=1;
  73
  74         print "Connecting to %s on port %i." % (btaddr, port);
  75         sock=bluetooth.BluetoothSocket(bluetooth.RFCOMM);
  76         self.sock=sock;
  77         sock.connect((btaddr,port));
  78         sock.settimeout(10);  #IMPORTANT Must be patient.
  79
  80         ##This is what we'd do for a normal reset.
  81         #str="";
  82         #while not str.endswith("goodfet.sf.net/"):
  83         #    str=self.read(64);
  84         #    print str;
  85
  86         # Instead, just return and hope for the best.
  87         return;
  88
  89     def write(self,msg):
  90         """Send traffic."""
  91         import time;
  92         self.sock.send(msg);
  93         #time.sleep(0.1);
  94         return;
  95     def read(self,length):
  96         """Read traffic."""
  97         data="";
  98         while len(data)<length:
  99             data=data+self.sock.recv(length-len(data));
 100         return data;
 101 class GoodFET:
 102     """GoodFET Client Library"""
 103
 104     besilent=0;
 105     app=0;
 106     verb=0;
 107     count=0;
 108     data="";
 109     verbose=False
 110
 111     GLITCHAPP=0x71;
 112     MONITORAPP=0x00;
 113     symbols=SymbolTable();
 114
 115     def __init__(self, *args, **kargs):
 116         self.data=[0];
 117     def getConsole(self):
 118         from GoodFETConsole import GoodFETConsole;
 119         return GoodFETConsole(self);
 120     def name2adr(self,name):
 121         return self.symbols.get(name);
 122     def timeout(self):
 123         print "timeout\n";
 124     def serInit(self, port=None, timeout=2, attemptlimit=None):
 125         """Open a serial port of some kind."""
 126         import re;
 127
 128         if port==None:
 129             port=os.environ.get("GOODFET");
 130         if port=="bluetooth" or (port is not None and re.match("..:..:..:..:..:..",port)):
 131             self.btInit(port,timeout,attemptlimit);
 132         else:
 133             self.pyserInit(port,timeout,attemptlimit);
 134     def btInit(self, port, timeout, attemptlimit):
 135         """Open a bluetooth port.""";
 136         #self.verbose=True;  #For debugging BT.
 137         self.serialport=GoodFETbtser(port);
 138
 139     def pyserInit(self, port, timeout, attemptlimit):
 140         """Open the serial port"""
 141         # Make timeout None to wait forever, 0 for non-blocking mode.
 142         import serial;
 143
 144         if os.name=='nt' and sys.version.find('64 bit')!=-1:
 145             print "WARNING: PySerial requires a 32-bit Python build in Windows.";
 146
 147         if port is None and os.environ.get("GOODFET")!=None:
 148             glob_list = glob.glob(os.environ.get("GOODFET"));
 149             if len(glob_list) > 0:
 150                 port = glob_list[0];
 151             else:
 152                 port = os.environ.get("GOODFET");
 153         if port is None:
 154             glob_list = glob.glob("/dev/tty.usbserial*");
 155             if len(glob_list) > 0:
 156                 port = glob_list[0];
 157         if port is None:
 158             glob_list = glob.glob("/dev/ttyUSB*");
 159             if len(glob_list) > 0:
 160                 port = glob_list[0];
 161         if port is None:
 162             glob_list = glob.glob("/dev/ttyU0");
 163             if len(glob_list) > 0:
 164                 port = glob_list[0];
 165         if port is None and os.name=='nt':
 166             from scanwin32 import winScan;
 167             scan=winScan();
 168             for order,comport,desc,hwid in sorted(scan.comports()):
 169                 try:
 170                     if hwid.index('FTDI')==0:
 171                         port=comport;
 172                         #print "Using FTDI port %s" % port
 173                 except:
 174                     #Do nothing.
 175                     a=1;
 176
 177         baud=115200;
 178         if(os.environ.get("platform")=='arduino' or os.environ.get("board")=='arduino'):
 179             baud=19200; #Slower, for now.
 180         self.serialport = serial.Serial(
 181             port,
 182             #9600,
 183             baud,
 184             parity = serial.PARITY_NONE,
 185             timeout=timeout
 186             )
 187
 188         self.verb=0;
 189         attempts=0;
 190         connected=0;
 191         while connected==0:
 192             while self.verb!=0x7F or self.data!="http://goodfet.sf.net/":
 193             #while self.data!="http://goodfet.sf.net/":
 194                 #print "'%s'!=\n'%s'" % (self.data,"http://goodfet.sf.net/");
 195                 if attemptlimit is not None and attempts >= attemptlimit:
 196                     return
 197                 elif attempts>2:
 198                     print "Resyncing.";
 199                 self.serialport.flushInput()
 200                 self.serialport.flushOutput()
 201
 202                 #TelosB reset, prefer software to I2C SPST Switch.
 203                 if (os.environ.get("platform")=='telosb' or  os.environ.get("board")=='telosb'):
 204                     #print "TelosB Reset";
 205                     self.telosBReset();
 206                 elif (os.environ.get("board")=='zolertiaz1' or  os.environ.get("board")=='z1'):
 207                     self.bslResetZ1();
 208                 else:
 209                     #Explicitly set RTS and DTR to halt board.
 210                     self.serialport.setRTS(1);
 211                     self.serialport.setDTR(1);
 212                     #Drop DTR, which is !RST, low to begin the app.
 213                     self.serialport.setDTR(0);
 214
 215                 #self.serialport.write(chr(0x80));
 216                 #self.serialport.write(chr(0x80));
 217                 #self.serialport.write(chr(0x80));
 218                 #self.serialport.write(chr(0x80));
 219
 220
 221                 #self.serialport.flushInput()
 222                 #self.serialport.flushOutput()
 223                 #time.sleep(60);
 224                 attempts=attempts+1;
 225                 self.readcmd(); #Read the first command.
 226                 #print "Got %02x,%02x:'%s'" % (self.app,self.verb,self.data);
 227             #Here we have a connection, but maybe not a good one.
 228             #print "We have a connection."
 229             connected=1;
 230             olds=self.infostring();
 231             clocking=self.monitorclocking();
 232             for foo in range(1,30):
 233                 if not self.monitorecho():
 234                     if self.verbose:
 235                         print "Comm error on %i try, resyncing out of %s." % (foo,
 236                                                                               clocking);
 237                         connected=0;
 238                         break;
 239         if self.verbose: print "Connected after %02i attempts." % attempts;
 240         self.mon_connected();
 241         self.serialport.setTimeout(12);
 242     def serClose(self):
 243         self.serialport.close();
 244     def telosSetSCL(self, level):
 245         self.serialport.setRTS(not level)
 246     def telosSetSDA(self, level):
 247         self.serialport.setDTR(not level)
 248
 249     def telosI2CStart(self):
 250         self.telosSetSDA(1)
 251         self.telosSetSCL(1)
 252         self.telosSetSDA(0)
 253
 254     def telosI2CStop(self):
 255         self.telosSetSDA(0)
 256         self.telosSetSCL(1)
 257         self.telosSetSDA(1)
 258
 259     def telosI2CWriteBit(self, bit):
 260         self.telosSetSCL(0)
 261         self.telosSetSDA(bit)
 262         time.sleep(2e-6)
 263         self.telosSetSCL(1)
 264         time.sleep(1e-6)
 265         self.telosSetSCL(0)
 266
 267     def telosI2CWriteByte(self, byte):
 268         self.telosI2CWriteBit( byte & 0x80 );
 269         self.telosI2CWriteBit( byte & 0x40 );
 270         self.telosI2CWriteBit( byte & 0x20 );
 271         self.telosI2CWriteBit( byte & 0x10 );
 272         self.telosI2CWriteBit( byte & 0x08 );
 273         self.telosI2CWriteBit( byte & 0x04 );
 274         self.telosI2CWriteBit( byte & 0x02 );
 275         self.telosI2CWriteBit( byte & 0x01 );
 276         self.telosI2CWriteBit( 0 );  # "acknowledge"
 277
 278     def telosI2CWriteCmd(self, addr, cmdbyte):
 279         self.telosI2CStart()
 280         self.telosI2CWriteByte( 0x90 | (addr << 1) )
 281         self.telosI2CWriteByte( cmdbyte )
 282         self.telosI2CStop()
 283     def bslResetZ1(self, invokeBSL=0):
 284         '''
 285         Applies BSL entry sequence on RST/NMI and TEST/VPP pins
 286         Parameters:
 287             invokeBSL = 1: complete sequence
 288             invokeBSL = 0: only RST/NMI pin accessed
 289
 290         By now only BSL mode is accessed
 291         '''
 292
 293         #if DEBUG > 1: sys.stderr.write("* bslReset(invokeBSL=%s)\n" % invokeBSL)
 294         if invokeBSL:
 295             #sys.stderr.write("in Z1 bsl reset...\n")
 296             time.sleep(0.1)
 297             self.writepicROM(0xFF, 0xFF)
 298             time.sleep(0.1)
 299             #sys.stderr.write("z1 bsl reset done...\n")
 300         else:
 301             #sys.stderr.write("in Z1 reset...\n")
 302             time.sleep(0.1)
 303             self.writepicROM(0xFF, 0xFE)
 304             time.sleep(0.1)
 305             #sys.stderr.write("z1 reset done...\n")
 306     def writepicROM(self, address, data):
 307         ''' Writes data to @address'''
 308         for i in range(7,-1,-1):
 309             self.picROMclock((address >> i) & 0x01)
 310         self.picROMclock(0)
 311         recbuf = 0
 312         for i in range(7,-1,-1):
 313             s = ((data >> i) & 0x01)
 314             #print s
 315             if i < 1:
 316                 r = not self.picROMclock(s, True)
 317             else:
 318                 r = not self.picROMclock(s)
 319             recbuf = (recbuf << 1) + r
 320
 321         self.picROMclock(0, True)
 322         #k = 1
 323         #while not self.serial.getCTS():
 324         #    pass
 325         #time.sleep(0.1)
 326         return recbuf
 327     def readpicROM(self, address):
 328         ''' reads a byte from @address'''
 329         for i in range(7,-1,-1):
 330             self.picROMclock((address >> i) & 0x01)
 331         self.picROMclock(1)
 332         recbuf = 0
 333         r = 0
 334         for i in range(7,-1,-1):
 335             r = self.picROMclock(0)
 336             recbuf = (recbuf << 1) + r
 337         self.picROMclock(r)
 338         #time.sleep(0.1)
 339         return recbuf
 340
 341     def picROMclock(self, masterout, slow = False):
 342         #print "setting masterout to "+str(masterout)
 343         self.serialport.setRTS(masterout)
 344         self.serialport.setDTR(1)
 345         #time.sleep(0.02)
 346         self.serialport.setDTR(0)
 347         if slow:
 348             time.sleep(0.02)
 349         return self.serialport.getCTS()
 350
 351     def picROMfastclock(self, masterout):
 352         #print "setting masterout to "+str(masterout)
 353         self.serialport.setRTS(masterout)
 354         self.serialport.setDTR(1)
 355         self.serialport.setDTR(0)
 356         time.sleep(0.02)
 357         return self.serialport.getCTS()
 358
 359     def telosBReset(self,invokeBSL=0):
 360         # "BSL entry sequence at dedicated JTAG pins"
 361         # rst !s0: 0 0 0 0 1 1
 362         # tck !s1: 1 0 1 0 0 1
 363         #   s0|s1: 1 3 1 3 2 0
 364
 365         # "BSL entry sequence at shared JTAG pins"
 366         # rst !s0: 0 0 0 0 1 1
 367         # tck !s1: 0 1 0 1 1 0
 368         #   s0|s1: 3 1 3 1 0 2
 369
 370         if invokeBSL:
 371             self.telosI2CWriteCmd(0,1)
 372             self.telosI2CWriteCmd(0,3)
 373             self.telosI2CWriteCmd(0,1)
 374             self.telosI2CWriteCmd(0,3)
 375             self.telosI2CWriteCmd(0,2)
 376             self.telosI2CWriteCmd(0,0)
 377         else:
 378             self.telosI2CWriteCmd(0,3)
 379             self.telosI2CWriteCmd(0,2)
 380
 381         # This line was not defined inside the else: block, not sure where it
 382         # should be however
 383         self.telosI2CWriteCmd(0,0)
 384         time.sleep(0.250)       #give MSP430's oscillator time to stabilize
 385         self.serialport.flushInput()  #clear buffers
 386
 387
 388     def getbuffer(self,size=0x1c00):
 389         writecmd(0,0xC2,[size&0xFF,(size>>16)&0xFF]);
 390         print "Got %02x%02x buffer size." % (self.data[1],self.data[0]);
 391     def writecmd(self, app, verb, count=0, data=[]):
 392         """Write a command and some data to the GoodFET."""
 393         self.serialport.write(chr(app));
 394         self.serialport.write(chr(verb));
 395
 396         #if data!=None:
 397         #    count=len(data); #Initial count ignored.
 398
 399         #print "TX %02x %02x %04x" % (app,verb,count);
 400
 401         #little endian 16-bit length
 402         self.serialport.write(chr(count&0xFF));
 403         self.serialport.write(chr(count>>8));
 404
 405         if self.verbose:
 406             print "Tx: ( 0x%02x, 0x%02x, 0x%04x )" % ( app, verb, count )
 407
 408         #print "count=%02x, len(data)=%04x" % (count,len(data));
 409
 410         if count!=0:
 411             if(isinstance(data,list)):
 412                 for i in range(0,count):
 413                 #print "Converting %02x at %i" % (data[i],i)
 414                     data[i]=chr(data[i]);
 415             #print type(data);
 416             outstr=''.join(data);
 417             self.serialport.write(outstr);
 418         if not self.besilent:
 419             return self.readcmd()
 420         else:
 421             return []
 422
 423     def readcmd(self):
 424         """Read a reply from the GoodFET."""
 425         while 1:#self.serialport.inWaiting(): # Loop while input data is available
 426             try:
 427                 #print "Reading...";
 428                 self.app=ord(self.serialport.read(1));
 429                 #print "APP=%02x" % self.app;
 430                 self.verb=ord(self.serialport.read(1));
 431
 432                 #Fixes an obscure bug in the TelosB.
 433                 if self.app==0x00:
 434                     while self.verb==0x00:
 435                         self.verb=ord(self.serialport.read(1));
 436
 437                 #print "VERB=%02x" % self.verb;
 438                 self.count=(
 439                     ord(self.serialport.read(1))
 440                     +(ord(self.serialport.read(1))<<8)
 441                     );
 442
 443                 if self.verbose:
 444                     print "Rx: ( 0x%02x, 0x%02x, 0x%04x )" % ( self.app, self.verb, self.count )
 445
 446                 #Debugging string; print, but wait.
 447                 if self.app==0xFF:
 448                     if self.verb==0xFF:
 449                         print "# DEBUG %s" % self.serialport.read(self.count)
 450                     elif self.verb==0xFE:
 451                         print "# DEBUG 0x%x" % struct.unpack(fmt[self.count-1], self.serialport.read(self.count))[0]
 452                     elif self.verb==0xFD:
 453                         #Do nothing, just wait so there's no timeout.
 454                         print "# NOP.";
 455
 456                     sys.stdout.flush();
 457                 else:
 458                     self.data=self.serialport.read(self.count);
 459                     return self.data;
 460             except TypeError:
 461                 if self.connected:
 462                     print "Warning: waiting for serial read timed out (most likely).";
 463                     #print "This shouldn't happen after syncing.  Exiting for safety.";
 464                     #sys.exit(-1)
 465                 return self.data;
 466     #Glitching stuff.
 467     def glitchApp(self,app):
 468         """Glitch into a device by its application."""
 469         self.data=[app&0xff];
 470         self.writecmd(self.GLITCHAPP,0x80,1,self.data);
 471         #return ord(self.data[0]);
 472     def glitchVerb(self,app,verb,data):
 473         """Glitch during a transaction."""
 474         if data==None: data=[];
 475         self.data=[app&0xff, verb&0xFF]+data;
 476         self.writecmd(self.GLITCHAPP,0x81,len(self.data),self.data);
 477         #return ord(self.data[0]);
 478     def glitchstart(self):
 479         """Glitch into the AVR application."""
 480         self.glitchVerb(self.APP,0x20,None);
 481     def glitchstarttime(self):
 482         """Measure the timer of the START verb."""
 483         return self.glitchTime(self.APP,0x20,None);
 484     def glitchTime(self,app,verb,data):
 485         """Time the execution of a verb."""
 486         if data==None: data=[];
 487         self.data=[app&0xff, verb&0xFF]+data;
 488         print "Timing app %02x verb %02x." % (app,verb);
 489         self.writecmd(self.GLITCHAPP,0x82,len(self.data),self.data);
 490         time=ord(self.data[0])+(ord(self.data[1])<<8);
 491         print "Timed to be %i." % time;
 492         return time;
 493     def glitchVoltages(self,low=0x0880, high=0x0fff):
 494         """Set glitching voltages. (0x0fff is max.)"""
 495         self.data=[low&0xff, (low>>8)&0xff,
 496                    high&0xff, (high>>8)&0xff];
 497         self.writecmd(self.GLITCHAPP,0x90,4,self.data);
 498         #return ord(self.data[0]);
 499     def glitchRate(self,count=0x0800):
 500         """Set glitching count period."""
 501         self.data=[count&0xff, (count>>8)&0xff];
 502         self.writecmd(self.GLITCHAPP,0x91,2,
 503                       self.data);
 504         #return ord(self.data[0]);
 505
 506
 507     #Monitor stuff
 508     def silent(self,s=0):
 509         """Transmissions halted when 1."""
 510         self.besilent=s;
 511         print "besilent is %i" % self.besilent;
 512         self.writecmd(0,0xB0,1,[s]);
 513     connected=0;
 514     def mon_connected(self):
 515         """Announce to the monitor that the connection is good."""
 516         self.connected=1;
 517         self.writecmd(0,0xB1,0,[]);
 518     def out(self,byte):
 519         """Write a byte to P5OUT."""
 520         self.writecmd(0,0xA1,1,[byte]);
 521     def dir(self,byte):
 522         """Write a byte to P5DIR."""
 523         self.writecmd(0,0xA0,1,[byte]);
 524     def call(self,adr):
 525         """Call to an address."""
 526         self.writecmd(0,0x30,2,
 527                       [adr&0xFF,(adr>>8)&0xFF]);
 528     def execute(self,code):
 529         """Execute supplied code."""
 530         self.writecmd(0,0x31,2,#len(code),
 531                       code);
 532     def MONpeek8(self,address):
 533         """Read a byte of memory from the monitor."""
 534         self.data=[address&0xff,address>>8];
 535         self.writecmd(0,0x02,2,self.data);
 536         #self.readcmd();
 537         return ord(self.data[0]);
 538     def MONpeek16(self,address):
 539         """Read a word of memory from the monitor."""
 540         return self.MONpeek8(address)+(self.MONpeek8(address+1)<<8);
 541     def peek(self,address):
 542         """Read a word of memory from the monitor."""
 543         return self.MONpeek8(address)+(self.MONpeek8(address+1)<<8);
 544     def eeprompeek(self,address):
 545         """Read a word of memory from the monitor."""
 546         print "EEPROM peeking not supported for the monitor.";
 547         #return self.MONpeek8(address)+(self.MONpeek8(address+1)<<8);
 548     def peekbysym(self,name):
 549         """Read a value by its symbol name."""
 550         #TODO include memory in symbol.
 551         reg=self.symbols.get(name);
 552         return self.peek8(reg,"data");
 553     def pokebysym(self,name,val):
 554         """Write a value by its symbol name."""
 555         #TODO include memory in symbol.
 556         reg=self.symbols.get(name);
 557         return self.pokebyte(reg,val);
 558     def pokebyte(self,address,value,memory="vn"):
 559         """Set a byte of memory by the monitor."""
 560         self.data=[address&0xff,address>>8,value];
 561         self.writecmd(0,0x03,3,self.data);
 562         return ord(self.data[0]);
 563     def poke16(self,address,value):
 564         """Set a word of memory by the monitor."""
 565         self.pokebyte(address,value&0xFF);
 566         self.pokebyte(address,(value>>8)&0xFF);
 567         return value;
 568     def setsecret(self,value):
 569         """Set a secret word for later retreival.  Used by glitcher."""
 570         #self.eeprompoke(0,value);
 571         #self.eeprompoke(1,value);
 572         print "Secret setting is not yet suppored for this target.";
 573         print "Aborting.";
 574
 575     def getsecret(self):
 576         """Get a secret word.  Used by glitcher."""
 577         #self.eeprompeek(0);
 578         print "Secret getting is not yet suppored for this target.";
 579         print "Aborting.";
 580         sys.exit();
 581
 582     def dumpmem(self,begin,end):
 583         i=begin;
 584         while i<end:
 585             print "%04x %04x" % (i, self.MONpeek16(i));
 586             i+=2;
 587     def monitor_ram_pattern(self):
 588         """Overwrite all of RAM with 0xBEEF."""
 589         self.writecmd(0,0x90,0,self.data);
 590         return;
 591     def monitor_ram_depth(self):
 592         """Determine how many bytes of RAM are unused by looking for 0xBEEF.."""
 593         self.writecmd(0,0x91,0,self.data);
 594         return ord(self.data[0])+(ord(self.data[1])<<8);
 595
 596     #Baud rates.
 597     baudrates=[115200,
 598                9600,
 599                19200,
 600                38400,
 601                57600,
 602                115200];
 603     def setBaud(self,baud):
 604         """Change the baud rate.  TODO fix this."""
 605         rates=self.baudrates;
 606         self.data=[baud];
 607         print "Changing FET baud."
 608         self.serialport.write(chr(0x00));
 609         self.serialport.write(chr(0x80));
 610         self.serialport.write(chr(1));
 611         self.serialport.write(chr(baud));
 612
 613         print "Changed host baud."
 614         self.serialport.setBaudrate(rates[baud]);
 615         time.sleep(1);
 616         self.serialport.flushInput()
 617         self.serialport.flushOutput()
 618
 619         print "Baud is now %i." % rates[baud];
 620         return;
 621     def readbyte(self):
 622         return ord(self.serialport.read(1));
 623     def findbaud(self):
 624         for r in self.baudrates:
 625             print "\nTrying %i" % r;
 626             self.serialport.setBaudrate(r);
 627             #time.sleep(1);
 628             self.serialport.flushInput()
 629             self.serialport.flushOutput()
 630
 631             for i in range(1,10):
 632                 self.readbyte();
 633
 634             print "Read %02x %02x %02x %02x" % (
 635                 self.readbyte(),self.readbyte(),self.readbyte(),self.readbyte());
 636     def monitortest(self):
 637         """Self-test several functions through the monitor."""
 638         print "Performing monitor self-test.";
 639         self.monitorclocking();
 640         for f in range(0,3000):
 641             a=self.MONpeek16(0x0c00);
 642             b=self.MONpeek16(0x0c02);
 643             if a!=0x0c04 and a!=0x0c06:
 644                 print "ERROR Fetched %04x, %04x" % (a,b);
 645             self.pokebyte(0x0021,0); #Drop LED
 646             if self.MONpeek8(0x0021)!=0:
 647                 print "ERROR, P1OUT not cleared.";
 648             self.pokebyte(0x0021,1); #Light LED
 649             if not self.monitorecho():
 650                 print "Echo test failed.";
 651         print "Self-test complete.";
 652         self.monitorclocking();
 653     def monitorecho(self):
 654         data="The quick brown fox jumped over the lazy dog.";
 655         self.writecmd(self.MONITORAPP,0x81,len(data),data);
 656         if self.data!=data:
 657             print "Comm error recognized by monitorecho(), got:\n%s" % self.data;
 658             return 0;
 659         return 1;
 660
 661     def monitor_info(self):
 662         print "GoodFET with %s MCU" % self.infostring();
 663         print "Clocked at %s" % self.monitorclocking();
 664         return 1;
 665
 666     def monitor_list_apps(self, full=False):
 667         self.monitor_info()
 668         old_value = self.besilent
 669         self.besilent = True    # turn off automatic call to readcmd
 670         self.writecmd(self.MONITORAPP, 0x82, 1, [int(full)]);
 671         self.besilent = old_value
 672
 673         # read the build date string
 674         self.readcmd()
 675         print "Build Date: %s" % self.data
 676         print "Firmware apps:"
 677         while True:
 678             self.readcmd()
 679             if self.count == 0:
 680                 break
 681             print self.data
 682         return 1;
 683
 684     def monitorclocking(self):
 685         """Return the 16-bit clocking value."""
 686         return "0x%04x" % self.monitorgetclock();
 687
 688     def monitorsetclock(self,clock):
 689         """Set the clocking value."""
 690         self.MONpoke16(0x56, clock);
 691     def monitorgetclock(self):
 692         """Get the clocking value."""
 693         if(os.environ.get("platform")=='arduino' or os.environ.get("board")=='arduino'):
 694             return 0xDEAD;
 695         #Check for MSP430 before peeking this.
 696         return self.MONpeek16(0x56);
 697     # The following functions ought to be implemented in
 698     # every client.
 699
 700     def infostring(self):
 701         if(os.environ.get("platform")=='arduino' or os.environ.get("board")=='arduino'):
 702             return "Arduino";
 703         else:
 704             a=self.MONpeek8(0xff0);
 705             b=self.MONpeek8(0xff1);
 706             return "%02x%02x" % (a,b);
 707     def lock(self):
 708         print "Locking Unsupported.";
 709     def erase(self):
 710         print "Erasure Unsupported.";
 711     def setup(self):
 712         return;
 713     def start(self):
 714         return;
 715     def test(self):
 716         print "Unimplemented.";
 717         return;
 718     def status(self):
 719         print "Unimplemented.";
 720         return;
 721     def halt(self):
 722         print "Unimplemented.";
 723         return;
 724     def resume(self):
 725         print "Unimplemented.";
 726         return;
 727     def getpc(self):
 728         print "Unimplemented.";
 729         return 0xdead;
 730     def flash(self,file):
 731         """Flash an intel hex file to code memory."""
 732         print "Flash not implemented.";
 733     def dump(self,file,start=0,stop=0xffff):
 734         """Dump an intel hex file from code memory."""
 735         print "Dump not implemented.";
 736     def peek32(self,address, memory="vn"):
 737         """Peek 32 bits."""
 738         return (self.peek16(address,memory)+
 739                 (self.peek16(address+2,memory)<<16));
 740     def peek16(self,address, memory="vn"):
 741         """Peek 16 bits of memory."""
 742         return (self.peek8(address,memory)+
 743                 (self.peek8(address+1,memory)<<8));
 744     def peek8(self,address, memory="vn"):
 745         """Peek a byte of memory."""
 746         return self.MONpeek8(address); #monitor
 747     def peekblock(self,address,length,memory="vn"):
 748         """Return a block of data."""
 749         data=range(0,length);
 750         for foo in range(0,length):
 751             data[foo]=self.peek8(address+foo,memory);
 752         return data;
 753     def pokeblock(self,address,bytes,memory="vn"):
 754         """Poke a block of a data into memory at an address."""
 755         for foo in bytes:
 756             self.pokebyte(address,foo,memory);
 757             address=address+1;
 758         return;
 759     def loadsymbols(self):
 760         """Load symbols from a file."""
 761         return;