class GoodFET:
"""GoodFET Client Library"""
+
+ GLITCHAPP=0x71;
+
def __init__(self, *args, **kargs):
self.data=[0];
def timeout(self):
115200,
parity = serial.PARITY_NONE
)
+
+ #This might cause problems, but it makes failure graceful.
+ #self.serialport._timeout = 5;
+
+ #Explicitly set RTS and DTR to halt board.
+ self.serialport.setRTS(1);
+ self.serialport.setDTR(1);
#Drop DTR, which is !RST, low to begin the app.
self.serialport.setDTR(0);
self.serialport.flushInput()
self.serialport.write(chr(app));
self.serialport.write(chr(verb));
+ #if data!=None:
+ # count=len(data); #Initial count ignored.
- #print "TX %02x %02x" % (app,verb);
+ #print "TX %02x %02x %04x" % (app,verb,count);
#little endian 16-bit length
self.serialport.write(chr(count&0xFF));
#print "count=%02x, len(data)=%04x" % (count,len(data));
if count!=0:
- for i in range(0,count):
+ if(isinstance(data,list)):
+ for i in range(0,count):
#print "Converting %02x at %i" % (data[i],i)
- data[i]=chr(data[i]);
+ data[i]=chr(data[i]);
+ #print type(data);
outstr=''.join(data);
self.serialport.write(outstr);
if not self.besilent:
#Debugging string; print, but wait.
if self.app==0xFF and self.verb==0xFF:
- print "DEBUG %s" % self.serialport.read(self.count);
+ print "# DEBUG %s" % self.serialport.read(self.count);
else:
self.data=self.serialport.read(self.count);
return self.data;
+ #Glitching stuff.
+ def glitchApp(self,app):
+ """Glitch into a device by its application."""
+ self.data=[app&0xff];
+ self.writecmd(self.GLITCHAPP,0x80,1,self.data);
+ #return ord(self.data[0]);
+ def glitchVerb(self,app,verb,data):
+ """Glitch during a transaction."""
+ if data==None: data=[];
+ self.data=[app&0xff, verb&0xFF]+data;
+ self.writecmd(self.GLITCHAPP,0x81,len(self.data),self.data);
+ #return ord(self.data[0]);
+ def glitchstart(self):
+ """Glitch into the AVR application."""
+ self.glitchVerb(self.APP,0x20,None);
+ def glitchstarttime(self):
+ """Measure the timer of the START verb."""
+ return self.glitchTime(self.APP,0x20,None);
+ def glitchTime(self,app,verb,data):
+ """Time the execution of a verb."""
+ if data==None: data=[];
+ self.data=[app&0xff, verb&0xFF]+data;
+ self.writecmd(self.GLITCHAPP,0x82,len(self.data),self.data);
+ return ord(self.data[0])+(ord(self.data[1])<<8);
+ def glitchVoltages(self,low=0x0880, high=0x0fff):
+ """Set glitching voltages. (0x0fff is max.)"""
+ self.data=[low&0xff, (low>>8)&0xff,
+ high&0xff, (high>>8)&0xff];
+ self.writecmd(self.GLITCHAPP,0x90,4,self.data);
+ #return ord(self.data[0]);
+ def glitchRate(self,count=0x0800):
+ """Set glitching count period."""
+ self.data=[count&0xff, (count>>8)&0xff];
+ self.writecmd(self.GLITCHAPP,0x91,2,
+ self.data);
+ #return ord(self.data[0]);
+
#Monitor stuff
def silent(self,s=0):
def dir(self,byte):
"""Write a byte to P5DIR."""
self.writecmd(0,0xA0,1,[byte]);
+ def call(self,adr):
+ """Call to an address."""
+ self.writecmd(0,0x30,2,
+ [adr&0xFF,(adr>>8)&0xFF]);
+ def execute(self,code):
+ """Execute supplied code."""
+ self.writecmd(0,0x31,2,#len(code),
+ code);
def peekbyte(self,address):
"""Read a byte of memory from the monitor."""
self.data=[address&0xff,address>>8];