git.rot13.org Git - goodfet/blob - client/GoodFETMSP430.py

   1 #!/usr/bin/env python
   2 # GoodFET Client Library
   3 #
   4 # (C) 2009 Travis Goodspeed <travis at radiantmachines.com>
   5 #
   6 # Presently being rewritten.
   7
   8 import sys, time, string, cStringIO, struct, glob, serial, os;
   9
  10 from GoodFET import GoodFET;
  11
  12 class GoodFETMSP430(GoodFET):
  13     MSP430APP=0x11;  #Changed by inheritors.
  14     def MSP430setup(self):
  15         """Move the FET into the MSP430 JTAG application."""
  16         print "Initializing MSP430.";
  17         self.writecmd(0x11,0x10,0,self.data);
  18     def MSP430stop(self):
  19         """Stop debugging."""
  20         self.writecmd(self.MSP430APP,0x21,0,self.data);
  21
  22     def MSP430peek(self,adr):
  23         """Read the contents of memory at an address."""
  24         self.data=[adr&0xff, (adr&0xff00)>>8];
  25         self.writecmd(self.MSP430APP,0x02,2,self.data);
  26         return ord(self.data[0])+(ord(self.data[1])<<8);
  27     def MSP430poke(self,adr,val):
  28         """Read the contents of memory at an address."""
  29         self.data=[adr&0xff, (adr&0xff00)>>8, val&0xff, (val&0xff00)>>8];
  30         self.writecmd(self.MSP430APP,0x03,4,self.data);
  31         return;# ord(self.data[0])+(ord(self.data[1])<<8);
  32     def MSP430start(self):
  33         """Start debugging."""
  34         self.writecmd(self.MSP430APP,0x20,0,self.data);
  35         ident=self.MSP430ident();
  36         print "Target identifies as %04x." % ident;
  37
  38     def MSP430haltcpu(self):
  39         """Halt the CPU."""
  40         self.writecmd(self.MSP430APP,0xA0,0,self.data);
  41     def MSP430releasecpu(self):
  42         """Resume the CPU."""
  43         self.writecmd(self.MSP430APP,0xA1,0,self.data);
  44     def MSP430shiftir8(self,ins):
  45         """Shift the 8-bit Instruction Register."""
  46         data=[ins];
  47         self.writecmd(self.MSP430APP,0x80,1,data);
  48         return ord(self.data[0]);
  49     def MSP430shiftdr16(self,dat):
  50         """Shift the 16-bit Data Register."""
  51         data=[dat&0xFF,(dat&0xFF00)>>8];
  52         self.writecmd(self.MSP430APP,0x81,2,data);
  53         return ord(self.data[0])#+(ord(self.data[1])<<8);
  54     def MSP430setinstrfetch(self):
  55         """Set the instruction fetch mode."""
  56         self.writecmd(self.MSP430APP,0xC1,0,self.data);
  57         return self.data[0];
  58     def MSP430ident(self):
  59         """Grab self-identification word from 0x0FF0 as big endian."""
  60         i=self.MSP430peek(0x0ff0);
  61         return ((i&0xFF00)>>8)+((i&0xFF)<<8)
  62     def MSP430test(self):
  63         """Test MSP430 JTAG.  Requires that a chip be attached."""
  64         if self.MSP430ident()==0xffff:
  65             print "Is anything connected?";
  66         print "Testing RAM.";
  67         temp=self.MSP430peek(0x0200);
  68         self.MSP430poke(0x0200,0xdead);
  69         if(self.MSP430peek(0x0200)!=0xdead):
  70             print "Poke of 0x0200 did not set to 0xDEAD properly.";
  71             return;
  72         self.MSP430poke(0x0200,temp); #restore old value.
  73     def MSP430flashtest(self):
  74         self.MSP430masserase();
  75         i=0x2500;
  76         while(i<0xFFFF):
  77             if(self.MSP430peek(i)!=0xFFFF):
  78                 print "ERROR: Unerased flash at %04x."%i;
  79             self.MSP430writeflash(i,0xDEAD);
  80             i+=2;
  81     def MSP430masserase(self):
  82         """Erase MSP430 flash memory."""
  83         self.writecmd(self.MSP430APP,0xE3,0,None);
  84     def MSP430writeflash(self,adr,val):
  85         """Write a word of flash memory."""
  86         if(self.MSP430peek(adr)!=0xFFFF):
  87             print "FLASH ERROR: %04x not clear." % adr;
  88         data=[adr&0xFF,(adr&0xFF00)>>8,val&0xFF,(val&0xFF00)>>8];
  89         self.writecmd(self.MSP430APP,0xE1,4,data);
  90         rval=ord(self.data[0])+(ord(self.data[1])<<8);
  91         if(val!=rval):
  92             print "FLASH WRITE ERROR AT %04x.  Found %04x, wrote %04x." % (adr,rval,val);
  93
  94     def MSP430dumpbsl(self):
  95         self.MSP430dumpmem(0xC00,0xfff);
  96     def MSP430dumpallmem(self):
  97         self.MSP430dumpmem(0x200,0xffff);
  98     def MSP430dumpmem(self,begin,end):
  99         i=begin;
 100         while i<end:
 101             print "%04x %04x" % (i, self.MSP430peek(i));
 102             i+=2;