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
  15 class GoodFETCC(GoodFET):
  16     """A GoodFET variant for use with Chipcon 8051 Zigbeema SoC."""
  17     def CChaltcpu(self):
  18         """Halt the CPU."""
  19         self.writecmd(0x30,0x86,0,self.data);
  20     def CCreleasecpu(self):
  21         """Resume the CPU."""
  22         self.writecmd(0x30,0x87,0,self.data);
  23     def CCtest(self):
  24         self.CCreleasecpu();
  25         self.CChaltcpu();
  26         #print "Status: %s" % self.CCstatusstr();
  27
  28         #Grab ident three times, should be equal.
  29         ident1=self.CCident();
  30         ident2=self.CCident();
  31         ident3=self.CCident();
  32         if(ident1!=ident2 or ident2!=ident3):
  33             print "Error, repeated ident attempts unequal."
  34             print "%04x, %04x, %04x" % (ident1, ident2, ident3);
  35
  36         #Single step, printing PC.
  37         print "Tracing execution at startup."
  38         for i in range(1,15):
  39             pc=self.CCgetPC();
  40             byte=self.CCpeekcodebyte(i);
  41             #print "PC=%04x, %02x" % (pc, byte);
  42             self.CCstep_instr();
  43
  44         print "Verifying that debugging a NOP doesn't affect the PC."
  45         for i in range(1,15):
  46             pc=self.CCgetPC();
  47             self.CCdebuginstr([0x00]);
  48             if(pc!=self.CCgetPC()):
  49                 print "ERROR: PC changed during CCdebuginstr([NOP])!";
  50
  51
  52         #print "Status: %s." % self.CCstatusstr();
  53         #Exit debugger
  54         self.CCstop();
  55         print "Done.";
  56
  57     def CCsetup(self):
  58         """Move the FET into the CC2430/CC2530 application."""
  59         #print "Initializing Chipcon.";
  60         self.writecmd(0x30,0x10,0,self.data);
  61     def CCrd_config(self):
  62         """Read the config register of a Chipcon."""
  63         self.writecmd(0x30,0x82,0,self.data);
  64         return ord(self.data[0]);
  65     def CCwr_config(self,config):
  66         """Write the config register of a Chipcon."""
  67         self.writecmd(0x30,0x81,1,[config&0xFF]);
  68
  69     CCversions={0x0100:"CC1110",
  70                 0x8500:"CC2430",
  71                 0x8900:"CC2431",
  72                 0x8100:"CC2510",
  73                 0x9100:"CC2511",
  74                 0xFF00:"CCmissing"};
  75     def CCidentstr(self):
  76         ident=self.CCident();
  77         chip=self.CCversions.get(ident&0xFF00);
  78         return "%s/r%02x" % (chip, ident&0xFF);
  79     def CCident(self):
  80         """Get a chipcon's ID."""
  81         self.writecmd(0x30,0x8B,0,None);
  82         chip=ord(self.data[0]);
  83         rev=ord(self.data[1]);
  84         return (chip<<8)+rev;
  85     def CCgetPC(self):
  86         """Get a chipcon's PC."""
  87         self.writecmd(0x30,0x83,0,None);
  88         hi=ord(self.data[0]);
  89         lo=ord(self.data[1]);
  90         return (hi<<8)+lo;
  91     def CCdebuginstr(self,instr):
  92         self.writecmd(0x30,0x88,len(instr),instr);
  93         return ord(self.data[0]);
  94     def CCpeekcodebyte(self,adr):
  95         """Read the contents of code memory at an address."""
  96         self.data=[adr&0xff, (adr&0xff00)>>8];
  97         self.writecmd(0x30,0x90,2,self.data);
  98         return ord(self.data[0]);
  99     def CCpeekdatabyte(self,adr):
 100         """Read the contents of data memory at an address."""
 101         self.data=[adr&0xff, (adr&0xff00)>>8];
 102         self.writecmd(0x30,0x91, 2, self.data);
 103         return ord(self.data[0]);
 104     def CCpokedatabyte(self,adr,val):
 105         """Write a byte to data memory."""
 106         self.data=[adr&0xff, (adr&0xff00)>>8, val];
 107         self.writecmd(0x30, 0x92, 3, self.data);
 108         return ord(self.data[0]);
 109     def CCchiperase(self):
 110         """Erase all of the target's memory."""
 111         self.writecmd(0x30,0x80,0,None);
 112     def CCstatus(self):
 113         """Check the status."""
 114         self.writecmd(0x30,0x84,0,None);
 115         return ord(self.data[0])
 116     CCstatusbits={0x80 : "erased",
 117                   0x40 : "pcon_idle",
 118                   0x20 : "halted",
 119                   0x10 : "pm0",
 120                   0x08 : "halted",
 121                   0x04 : "locked",
 122                   0x02 : "oscstable",
 123                   0x01 : "overflow"};
 124     def CCstatusstr(self):
 125         """Check the status as a string."""
 126         status=self.CCstatus();
 127         str="";
 128         i=1;
 129         while i<0x100:
 130             if(status&i):
 131                 str="%s %s" %(self.CCstatusbits[i],str);
 132             i*=2;
 133         return str;
 134     def CCstart(self):
 135         """Start debugging."""
 136         self.writecmd(0x30,0x20,0,self.data);
 137         ident=self.CCidentstr();
 138         print "Target identifies as %s." % ident;
 139         #print "Status: %s." % self.CCstatusstr();
 140         self.CCreleasecpu();
 141         self.CChaltcpu();
 142         #print "Status: %s." % self.CCstatusstr();
 143
 144     def CCstop(self):
 145         """Stop debugging."""
 146         self.writecmd(0x30,0x21,0,self.data);
 147     def CCstep_instr(self):
 148         """Step one instruction."""
 149         self.writecmd(0x30,0x89,0,self.data);
 150