git.rot13.org Git - goodfet/blob - client/GoodFETCC.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;
   9 import binascii;
  10
  11 from GoodFET import GoodFET;
  12 from intelhex import IntelHex;
  13
  14 import xml.dom.minidom, time;
  15
  16 class GoodFETCC(GoodFET):
  17     """A GoodFET variant for use with Chipcon 8051 Zigbee SoC."""
  18     APP=0x30;
  19
  20
  21
  22
  23     smartrfpath="/opt/smartrf7";
  24     def loadsymbols(self):
  25         try: self.SRF_loadsymbols();
  26         except:
  27             if self.verbose>0: print "SmartRF not found at %s." % self.smartrfpath;
  28     def SRF_chipdom(self,chip="cc1110", doc="register_definition.xml"):
  29         fn="%s/config/xml/%s/%s" % (self.smartrfpath,chip,doc);
  30         #print "Opening %s" % fn;
  31         return xml.dom.minidom.parse(fn)
  32
  33     def CMDrs(self,args=[]):
  34         """Chip command to grab the radio state."""
  35         try:
  36             self.SRF_radiostate();
  37         except:
  38             print "Error printing radio state.";
  39             print "SmartRF not found at %s." % self.smartrfpath;
  40     def SRF_bitfieldstr(self,bf):
  41         name="unused";
  42         start=0;
  43         stop=0;
  44         access="";
  45         reset="0x00";
  46         description="";
  47         for e in bf.childNodes:
  48             if e.localName=="Name" and e.childNodes: name= e.childNodes[0].nodeValue;
  49             elif e.localName=="Start": start=e.childNodes[0].nodeValue;
  50             elif e.localName=="Stop": stop=e.childNodes[0].nodeValue;
  51         return "   [%s:%s] %30s " % (start,stop,name);
  52     def SRF_radiostate(self):
  53         ident=self.CCident();
  54         chip=self.CCversions.get(ident&0xFF00);
  55         dom=self.SRF_chipdom(chip,"register_definition.xml");
  56         for e in dom.getElementsByTagName("registerdefinition"):
  57             for f in e.childNodes:
  58                 if f.localName=="DeviceName":
  59                     print "// %s RadioState" % (f.childNodes[0].nodeValue);
  60                 elif f.localName=="Register":
  61                     name="unknownreg";
  62                     address="0xdead";
  63                     description="";
  64                     bitfields="";
  65                     for g in f.childNodes:
  66                         if g.localName=="Name":
  67                             name=g.childNodes[0].nodeValue;
  68                         elif g.localName=="Address":
  69                             address=g.childNodes[0].nodeValue;
  70                         elif g.localName=="Description":
  71                             if g.childNodes:
  72                                 description=g.childNodes[0].nodeValue;
  73                         elif g.localName=="Bitfield":
  74                             bitfields+="%17s/* %-50s */\n" % ("",self.SRF_bitfieldstr(g));
  75                     #print "SFRX(%10s, %s); /* %50s */" % (name,address, description);
  76                     print "%-10s=0x%02x; /* %-50s */" % (
  77                         name,self.CCpeekdatabyte(eval(address)), description);
  78                     if bitfields!="": print bitfields.rstrip();
  79     def RF_setfreq(self,frequency):
  80         """Set the frequency in Hz."""
  81         #FIXME CC1110 specific
  82
  83         hz=frequency;
  84         freq=int(hz/396.728515625);
  85
  86         freq0=freq&0xFF;
  87         freq1=(freq&0xFF00)>>8;
  88         freq2=(freq&0xFF0000)>>16;
  89
  90         self.pokebysym("FREQ2",freq2);
  91         self.pokebysym("FREQ1",freq1);
  92         self.pokebysym("FREQ0",freq0);
  93
  94
  95     def RF_getfreq(self):
  96         """Get the frequency in Hz."""
  97         #FIXME CC1110 specific
  98
  99         #return (2400+self.peek(0x05))*10**6
 100         #self.poke(0x05,chan);
 101
 102         #freq2=self.CCpeekdatabyte(0xdf09);
 103         #freq1=self.CCpeekdatabyte(0xdf0a);
 104         #freq0=self.CCpeekdatabyte(0xdf0b);
 105         freq=0;
 106         try:
 107             freq2=self.peekbysym("FREQ2");
 108             freq1=self.peekbysym("FREQ1");
 109             freq0=self.peekbysym("FREQ0");
 110             freq=(freq2<<16)+(freq1<<8)+freq0;
 111         except:
 112             freq=0;
 113
 114         hz=freq*396.728515625;
 115
 116         return hz;
 117
 118
 119     def CC1110_crystal(self):
 120         """Start the main crystal of the CC1110 oscillating, needed for radio use."""
 121
 122         #//C code for the same.
 123         #SLEEP &= ~SLEEP_OSC_PD;
 124         #while( !(SLEEP & SLEEP_XOSC_S) );
 125         #CLKCON = (CLKCON & ~(CLKCON_CLKSPD | CLKCON_OSC)) | CLKSPD_DIV_1;
 126         #while (CLKCON & CLKCON_OSC);
 127         #SLEEP |= SLEEP_OSC_PD;
 128
 129         #registers and constants.
 130         #FIXME cc1110 specific
 131         SLEEP=0xDFBE;
 132         SLEEP_OSC_PD=0x04;
 133         CLKCON=0xDFC6;
 134         SLEEP_XOSC_S=0x40;
 135         CLKCON_CLKSPD=0x07
 136         CLKCON_OSC=0x40;
 137         CLKSPD_DIV_1=0x00;
 138
 139         sleep=self.peekbyte(SLEEP);
 140         sleep&=~SLEEP_XOSC_S;
 141         self.pokebyte(SLEEP,sleep);
 142         while(0==(self.peekbyte(SLEEP)&SLEEP_XOSC_S)):
 143             time.sleep(0.1);
 144         clkcon=self.peekbyte(CLKCON);
 145         clkcon=(clkcon & ~(CLKCON_CLKSPD | CLKCON_OSC)) | CLKSPD_DIV_1
 146         self.pokebyte(CLKCON,clkcon);
 147         clkcon=0;
 148         while(clkcon&CLKCON_OSC):
 149             clkcon=self.peekbyte(CLKCON);
 150         sleep=self.peekbyte(SLEEP);
 151         sleep|=SLEEP_OSC_PD;
 152         self.pokebyte(SLEEP,sleep);
 153
 154         return;
 155     def RF_idle(self):
 156         RFST=0xDFE1
 157         self.pokebyte(RFST,0x04); #Return to idle state.
 158
 159     def RF_carrier(self):
 160         """Hold a carrier wave on the present frequency."""
 161
 162         self.CC1110_crystal(); #FIXME, '1110 specific.
 163         self.RF_idle();
 164
 165         #self.resume();
 166         #time.sleep(1);
 167         #self.halt();
 168
 169         RFST=0xDFE1;
 170
 171
 172         #0a00
 173         #self.pokebysym("FSCTRL1"  , 0x12)   # Frequency synthesizer control.
 174         #self.pokebysym("FSCTRL0"  , 0x00)   # Frequency synthesizer control.
 175         self.pokebysym("FSCTRL1"  , 0x0a)   # Frequency synthesizer control.
 176         self.pokebysym("FSCTRL0"  , 0x00)   # Frequency synthesizer control.
 177
 178         #Don't change these while the radio is active.
 179         self.pokebysym("FSCAL3"   , 0xA9)   # Frequency synthesizer calibration.
 180         self.pokebysym("FSCAL2"   , 0x0A)   # Frequency synthesizer calibration.
 181         self.pokebysym("FSCAL1"   , 0x00)   # Frequency synthesizer calibration.
 182         self.pokebysym("FSCAL0"   , 0x11)   # Frequency synthesizer calibration.
 183
 184         #Ossmann's settings, not yet sure how they differ.
 185         #self.pokebysym("FSCAL3"   , 0xEA)   # Frequency synthesizer calibration.
 186         #self.pokebysym("FSCAL2"   , 0x2A)   # Frequency synthesizer calibration.
 187         #self.pokebysym("FSCAL1"   , 0x00)   # Frequency synthesizer calibration.
 188         #self.pokebysym("FSCAL0"   , 0x1F)   # Frequency synthesizer calibration.
 189
 190
 191         #self.pokebysym("FREQ2"    , 0x10)   # Frequency control word, high byte.
 192         #self.pokebysym("FREQ1"    , 0xEC)   # Frequency control word, middle byte.
 193         #self.pokebysym("FREQ0"    , 0x4E)   # Frequency control word, low byte.
 194         self.pokebysym("MDMCFG4"  , 0x86)   # Modem configuration.
 195         self.pokebysym("MDMCFG3"  , 0x83)   # Modem configuration.
 196         self.pokebysym("MDMCFG2"  , 0x30)   # Modem configuration.
 197         self.pokebysym("MDMCFG1"  , 0x22)   # Modem configuration.
 198         self.pokebysym("MDMCFG0"  , 0xF8)   # Modem configuration.
 199         self.pokebysym("CHANNR"   , 0x00)   # Channel number.
 200         self.pokebysym("DEVIATN"  , 0x00)   # Modem deviation setting (when FSK modulation is enabled).
 201         self.pokebysym("FREND1"   , 0x56)   # Front end RX configuration.
 202
 203         self.pokebysym("FREND0"   , 0x10)   # Front end RX configuration.
 204         self.pokebysym("MCSM0"    , 0x14)   # Main Radio Control State Machine configuration.
 205         self.pokebysym("FOCCFG"   , 0x16)   # Frequency Offset Compensation Configuration.
 206         self.pokebysym("BSCFG"    , 0x6C)   # Bit synchronization Configuration.
 207
 208         self.pokebysym("AGCCTRL2" , 0x03)   # AGC control.
 209         self.pokebysym("AGCCTRL1" , 0x40)   # AGC control.
 210         self.pokebysym("AGCCTRL0" , 0x91)   # AGC control.
 211
 212
 213
 214
 215
 216
 217         self.pokebysym("TEST2"    , 0x88)   # Various test settings.
 218         self.pokebysym("TEST1"    , 0x31)   # Various test settings.
 219         self.pokebysym("TEST0"    , 0x09)   # Various test settings.
 220         self.pokebysym("PA_TABLE0", 0xC0)   # PA output power setting.
 221         self.pokebysym("PKTCTRL1" , 0x04)   # Packet automation control.
 222         self.pokebysym("PKTCTRL0" , 0x22)   # Packet automation control.
 223         self.pokebysym("ADDR"     , 0x00)   # Device address.
 224         self.pokebysym("PKTLEN"   , 0xFF)   # Packet length.
 225
 226         self.pokebysym("SYNC1",0xAA);
 227         self.pokebysym("SYNC0",0xAA);
 228
 229
 230
 231         #while ((MARCSTATE & MARCSTATE_MARC_STATE) != MARC_STATE_TX);
 232         state=0;
 233
 234         while((state!=0x13)):
 235             self.pokebyte(RFST,0x03); #RFST=RFST_STX
 236             time.sleep(0.1);
 237             state=self.peekbysym("MARCSTATE")&0x1F;
 238             print "state=%02x" % state;
 239         print "Holding a carrier on %f MHz." % (self.RF_getfreq()/10**6);
 240
 241         #Not needed, radio works when CPU is halted.
 242         #self.resume();
 243
 244         return;
 245
 246
 247     def RF_getrssi(self):
 248         """Returns the received signal strenght, with a weird offset."""
 249         try:
 250             rssireg=self.symbols.get("RSSI");
 251             return self.CCpeekdatabyte(rssireg);
 252         except:
 253             if self.verbose>0: print "RSSI reg doesn't exist.";
 254         try:
 255             #RSSI doesn't exist on 2.4GHz devices.  Maybe RSSIL and RSSIH?
 256             rssilreg=self.symbols.get("RSSIL");
 257             rssil=self.CCpeekdatabyte(rssilreg);
 258             rssihreg=self.symbols.get("RSSIL");
 259             rssih=self.CCpeekdatabyte(rssihreg);
 260             return (rssih<<8)|rssil;
 261         except:
 262             if self.verbose>0: print "RSSIL/RSSIH regs don't exist.";
 263
 264         return 0;
 265
 266
 267     def SRF_loadsymbols(self):
 268         ident=self.CCident();
 269         chip=self.CCversions.get(ident&0xFF00);
 270         dom=self.SRF_chipdom(chip,"register_definition.xml");
 271         for e in dom.getElementsByTagName("registerdefinition"):
 272             for f in e.childNodes:
 273                 if f.localName=="Register":
 274                     name="unknownreg";
 275                     address="0xdead";
 276                     description="";
 277                     bitfields="";
 278                     for g in f.childNodes:
 279                         if g.localName=="Name":
 280                             name=g.childNodes[0].nodeValue;
 281                         elif g.localName=="Address":
 282                             address=g.childNodes[0].nodeValue;
 283                         elif g.localName=="Description":
 284                             if g.childNodes:
 285                                 description=g.childNodes[0].nodeValue;
 286                         elif g.localName=="Bitfield":
 287                             bitfields+="%17s/* %-50s */\n" % ("",self.SRF_bitfieldstr(g));
 288                     #print "SFRX(%10s, %s); /* %50s */" % (name,address, description);
 289                     self.symbols.define(eval(address),name,description,"data");
 290     def halt(self):
 291         """Halt the CPU."""
 292         self.CChaltcpu();
 293     def CChaltcpu(self):
 294         """Halt the CPU."""
 295         self.writecmd(self.APP,0x86,0,self.data);
 296     def resume(self):
 297         self.CCreleasecpu();
 298     def CCreleasecpu(self):
 299         """Resume the CPU."""
 300         self.writecmd(self.APP,0x87,0,self.data);
 301     def test(self):
 302         self.CCreleasecpu();
 303         self.CChaltcpu();
 304         #print "Status: %s" % self.CCstatusstr();
 305
 306         #Grab ident three times, should be equal.
 307         ident1=self.CCident();
 308         ident2=self.CCident();
 309         ident3=self.CCident();
 310         if(ident1!=ident2 or ident2!=ident3):
 311             print "Error, repeated ident attempts unequal."
 312             print "%04x, %04x, %04x" % (ident1, ident2, ident3);
 313
 314         #Single step, printing PC.
 315         print "Tracing execution at startup."
 316         for i in range(1,15):
 317             pc=self.CCgetPC();
 318             byte=self.CCpeekcodebyte(i);
 319             #print "PC=%04x, %02x" % (pc, byte);
 320             self.CCstep_instr();
 321
 322         print "Verifying that debugging a NOP doesn't affect the PC."
 323         for i in range(1,15):
 324             pc=self.CCgetPC();
 325             self.CCdebuginstr([0x00]);
 326             if(pc!=self.CCgetPC()):
 327                 print "ERROR: PC changed during CCdebuginstr([NOP])!";
 328
 329         print "Checking pokes to XRAM."
 330         for i in range(0xf000,0xf020):
 331             self.CCpokedatabyte(i,0xde);
 332             if(self.CCpeekdatabyte(i)!=0xde):
 333                 print "Error in XDATA at 0x%04x" % i;
 334
 335         #print "Status: %s." % self.CCstatusstr();
 336         #Exit debugger
 337         self.stop();
 338         print "Done.";
 339
 340     def setup(self):
 341         """Move the FET into the CC2430/CC2530 application."""
 342         #print "Initializing Chipcon.";
 343         self.writecmd(self.APP,0x10,0,self.data);
 344     def CCrd_config(self):
 345         """Read the config register of a Chipcon."""
 346         self.writecmd(self.APP,0x82,0,self.data);
 347         return ord(self.data[0]);
 348     def CCwr_config(self,config):
 349         """Write the config register of a Chipcon."""
 350         self.writecmd(self.APP,0x81,1,[config&0xFF]);
 351     def CClockchip(self):
 352         """Set the flash lock bit in info mem."""
 353         self.writecmd(self.APP, 0x9A, 0, None);
 354     def lock(self):
 355         """Set the flash lock bit in info mem."""
 356         self.CClockchip();
 357
 358
 359     CCversions={0x0100:"cc1110",
 360                 0x1100:"cc1111",
 361                 0x8500:"cc2430",
 362                 0x8900:"cc2431",
 363                 0x8100:"cc2510",
 364                 0x9100:"cc2511",
 365                 0xA500:"cc2530", #page 52 of SWRU191
 366                 0xB500:"cc2531",
 367                 0xFF00:"CCmissing"};
 368     CCpagesizes={0x01: 1024, #"CC1110",
 369                  0x11: 1024, #"CC1111",
 370                  0x85: 2048, #"CC2430",
 371                  0x89: 2048, #"CC2431",
 372                  0x81: 1024, #"CC2510",
 373                  0x91: 1024, #"CC2511",
 374                  0xA5: 2048, #"CC2530", #page 52 of SWRU191
 375                  0xB5: 2048, #"CC2531",
 376                  0xFF: 0    } #"CCmissing"};
 377     def infostring(self):
 378         return self.CCidentstr();
 379     def CCidentstr(self):
 380         ident=self.CCident();
 381         chip=self.CCversions.get(ident&0xFF00);
 382         pagesize=self.CCpagesizes.get(ident>0xFF);
 383         try:
 384             return "%s/r%0.4x/ps0x%0.4x" % (chip, ident, pagesize);
 385         except:
 386             return "%04x" % ident;
 387     def CCident(self):
 388         """Get a chipcon's ID."""
 389         self.writecmd(self.APP,0x8B,0,None);
 390         chip=ord(self.data[0]);
 391         rev=ord(self.data[1]);
 392         return (chip<<8)+rev;
 393     def CCpagesize(self):
 394         """Get a chipcon's ID."""
 395         self.writecmd(self.APP,0x8B,0,None);
 396         chip=ord(self.data[0]);
 397         size=self.CCpagesizes.get(chip);
 398         if(size<10):
 399             print "ERROR: Pagesize undefined.";
 400             print "chip=%0.4x" %chip;
 401             sys.exit(1);
 402             #return 2048;
 403         return size;
 404     def getpc(self):
 405         return self.CCgetPC();
 406     def CCgetPC(self):
 407         """Get a chipcon's PC."""
 408         self.writecmd(self.APP,0x83,0,None);
 409         hi=ord(self.data[0]);
 410         lo=ord(self.data[1]);
 411         return (hi<<8)+lo;
 412     def CCcmd(self,phrase):
 413         self.writecmd(self.APP,0x00,len(phrase),phrase);
 414         val=ord(self.data[0]);
 415         print "Got %02x" % val;
 416         return val;
 417     def CCdebuginstr(self,instr):
 418         self.writecmd(self.APP,0x88,len(instr),instr);
 419         return ord(self.data[0]);
 420     def peekblock(self,adr,length,memory="vn"):
 421         """Return a block of data."""
 422         data=[adr&0xff, (adr&0xff00)>>8,
 423               length&0xFF,(length&0xFF00)>>8];
 424         self.writecmd(self.APP,0x91,4,data);
 425         return [ord(x) for x in self.data]
 426     def peek8(self,address, memory="code"):
 427         if(memory=="code" or memory=="flash" or memory=="vn"):
 428             return self.CCpeekcodebyte(address);
 429         elif(memory=="data" or memory=="xdata" or memory=="ram"):
 430             return self.CCpeekdatabyte(address);
 431         elif(memory=="idata" or memory=="iram"):
 432             return self.CCpeekirambyte(address);
 433         print "%s is an unknown memory." % memory;
 434         return 0xdead;
 435     def CCpeekcodebyte(self,adr):
 436         """Read the contents of code memory at an address."""
 437         self.data=[adr&0xff, (adr&0xff00)>>8];
 438         self.writecmd(self.APP,0x90,2,self.data);
 439         return ord(self.data[0]);
 440     def CCpeekdatabyte(self,adr):
 441         """Read the contents of data memory at an address."""
 442         self.data=[adr&0xff, (adr&0xff00)>>8];
 443         self.writecmd(self.APP,0x91, 2, self.data);
 444         return ord(self.data[0]);
 445     def CCpeekirambyte(self,adr):
 446         """Read the contents of IRAM at an address."""
 447         self.data=[adr&0xff];
 448         self.writecmd(self.APP,0x02, 1, self.data);
 449         return ord(self.data[0]);
 450     def CCpeekiramword(self,adr):
 451         """Read the little-endian contents of IRAM at an address."""
 452         return self.CCpeekirambyte(adr)+(
 453             self.CCpeekirambyte(adr+1)<<8);
 454     def CCpokeiramword(self,adr,val):
 455         self.CCpokeirambyte(adr,val&0xff);
 456         self.CCpokeirambyte(adr+1,(val>>8)&0xff);
 457     def CCpokeirambyte(self,adr,val):
 458         """Write the contents of IRAM at an address."""
 459         self.data=[adr&0xff, val&0xff];
 460         self.writecmd(self.APP,0x02, 2, self.data);
 461         return ord(self.data[0]);
 462     def pokebyte(self,adr,val,mem="data"):
 463         if mem!="data":
 464             print "FIXME: poking of non data bytes not yet supported.";
 465         self.CCpokedatabyte(adr,val);
 466     def CCpokedatabyte(self,adr,val):
 467         """Write a byte to data memory."""
 468         self.data=[adr&0xff, (adr&0xff00)>>8, val];
 469         self.writecmd(self.APP, 0x92, 3, self.data);
 470         return ord(self.data[0]);
 471     def CCchiperase(self):
 472         """Erase all of the target's memory."""
 473         self.writecmd(self.APP,0x80,0,None);
 474     def erase(self):
 475         """Erase all of the target's memory."""
 476         self.CCchiperase();
 477         self.start();
 478
 479     def CCstatus(self):
 480         """Check the status."""
 481         self.writecmd(self.APP,0x84,0,None);
 482         return ord(self.data[0])
 483     #Same as CC2530
 484     CCstatusbits={0x80 : "erase_busy",
 485                   0x40 : "pcon_idle",
 486                   0x20 : "cpu_halted",
 487                   0x10 : "pm0",
 488                   0x08 : "halt_status",
 489                   0x04 : "locked",
 490                   0x02 : "oscstable",
 491                   0x01 : "overflow"
 492                   };
 493     CCconfigbits={0x20 : "soft_power_mode",   #new for CC2530
 494                   0x08 : "timers_off",
 495                   0x04 : "dma_pause",
 496                   0x02 : "timer_suspend",
 497                   0x01 : "sel_flash_info_page" #stricken from CC2530
 498                   };
 499
 500     def status(self):
 501         """Check the status as a string."""
 502         status=self.CCstatus();
 503         str="";
 504         i=1;
 505         while i<0x100:
 506             if(status&i):
 507                 str="%s %s" %(self.CCstatusbits[i],str);
 508             i*=2;
 509         return str;
 510     def start(self):
 511         """Start debugging."""
 512         self.setup();
 513         self.writecmd(self.APP,0x20,0,self.data);
 514         ident=self.CCidentstr();
 515         #print "Target identifies as %s." % ident;
 516         #print "Status: %s." % self.status();
 517         self.CCreleasecpu();
 518         self.CChaltcpu();
 519         #Get SmartRF Studio regs if they exist.
 520         self.loadsymbols();
 521
 522     def stop(self):
 523         """Stop debugging."""
 524         self.writecmd(self.APP,0x21,0,self.data);
 525     def CCstep_instr(self):
 526         """Step one instruction."""
 527         self.writecmd(self.APP,0x89,0,self.data);
 528     def CCeraseflashbuffer(self):
 529         """Erase the 2kB flash buffer"""
 530         self.writecmd(self.APP,0x99);
 531     def CCflashpage(self,adr):
 532         """Flash 2kB a page of flash from 0xF000 in XDATA"""
 533         data=[adr&0xFF,
 534               (adr>>8)&0xFF,
 535               (adr>>16)&0xFF,
 536               (adr>>24)&0xFF];
 537         print "Flashing buffer to 0x%06x" % adr;
 538         self.writecmd(self.APP,0x95,4,data);
 539
 540     def setsecret(self,value):
 541         """Set a secret word for later retreival.  Used by glitcher."""
 542         page = 0x0000;
 543         pagelen = self.CCpagesize(); #Varies by chip.
 544         print "page=%04x, pagelen=%04x" % (page,pagelen);
 545
 546         self.CCeraseflashbuffer();
 547         print "Setting secret to %x" % value;
 548         self.CCpokedatabyte(0xF000,value);
 549         self.CCpokedatabyte(0xF800,value);
 550         print "Setting secret to %x==%x" % (value,
 551                                             self.CCpeekdatabyte(0xf000));
 552         self.CCflashpage(0);
 553         print "code[0]=%x" % self.CCpeekcodebyte(0);
 554     def getsecret(self):
 555         """Get a secret word.  Used by glitcher."""
 556         secret=self.CCpeekcodebyte(0);
 557         #print "Got secret %02x" % secret;
 558         return secret;
 559
 560     def dump(self,file,start=0,stop=0xffff):
 561         """Dump an intel hex file from code memory."""
 562         print "Dumping code from %04x to %04x as %s." % (start,stop,file);
 563         h = IntelHex(None);
 564         i=start;
 565         while i<=stop:
 566             h[i]=self.CCpeekcodebyte(i);
 567             if(i%0x100==0):
 568                 print "Dumped %04x."%i;
 569                 h.write_hex_file(file); #buffer to disk.
 570             i+=1;
 571         h.write_hex_file(file);
 572
 573     def flash(self,file):
 574         """Flash an intel hex file to code memory."""
 575         print "Flashing %s" % file;
 576
 577         h = IntelHex(file);
 578         page = 0x0000;
 579         pagelen = self.CCpagesize(); #Varies by chip.
 580
 581         #print "page=%04x, pagelen=%04x" % (page,pagelen);
 582
 583         bcount = 0;
 584
 585         #Wipe the RAM buffer for the next flash page.
 586         self.CCeraseflashbuffer();
 587         for i in h._buf.keys():
 588             while(i>=page+pagelen):
 589                 if bcount>0:
 590                     self.CCflashpage(page);
 591                     #client.CCeraseflashbuffer();
 592                     bcount=0;
 593                     print "Flashed page at %06x" % page
 594                 page+=pagelen;
 595
 596             #Place byte into buffer.
 597             self.CCpokedatabyte(0xF000+i-page,
 598                                 h[i]);
 599             bcount+=1;
 600             if(i%0x100==0):
 601                 print "Buffering %04x toward %06x" % (i,page);
 602         #last page
 603         self.CCflashpage(page);
 604         print "Flashed final page at %06x" % page;
 605