Interactive debugger, or parts of one.

[goodfet] / client / GoodFET.py

diff --git a/client/GoodFET.py b/client/GoodFET.py
index 9fcbbab..d2beb5c 100755 (executable)
--- a/client/GoodFET.py
+++ b/client/GoodFET.py
@@ -10,6 +10,9 @@ import sys, time, string, cStringIO, struct, glob, serial, os;
 
 class GoodFET:
     """GoodFET Client Library"""
+    
+    GLITCHAPP=0x71;
+    
     def __init__(self, *args, **kargs):
         self.data=[0];
     def timeout(self):
@@ -36,6 +39,13 @@ class GoodFET:
             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()
@@ -55,8 +65,10 @@ class GoodFET:
         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));
@@ -65,9 +77,11 @@ class GoodFET:
         #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:
@@ -94,10 +108,48 @@ class GoodFET:
             
             #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);
+                sys.stdout.flush();
             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):
@@ -112,6 +164,14 @@ class GoodFET:
     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];
@@ -195,20 +255,29 @@ class GoodFET:
     
     
 
-    def I2Csetup(self):
-        """Move the FET into the I2C application."""
-        self.writecmd(0x02,0x10,0,self.data); #SPI/SETUP
-    def I2Cstart(self):
-        """Start an I2C transaction."""
-        self.writecmd(0x02,0x20,0,self.data); #SPI/SETUP
-    def I2Cstop(self):
-        """Stop an I2C transaction."""
-        self.writecmd(0x02,0x21,0,self.data); #SPI/SETUP
-    def I2Cread(self,len=1):
-        """Read len bytes by I2C."""
-        self.writecmd(0x02,0x00,1,[len]); #SPI/SETUP
-        return self.data;
-    def I2Cwrite(self,bytes):
-        """Write bytes by I2C."""
-        self.writecmd(0x02,0x01,len(bytes),bytes); #SPI/SETUP
-        return ord(self.data[0]);
+    def infostring(self):
+        a=self.peekbyte(0xff0);
+        b=self.peekbyte(0xff1);
+        return "%02x%02x" % (a,b);
+    def lock(self):
+        print "Locking Unsupported.";
+    def erase(self):
+        print "Erasure Unsupported.";
+    def setup(self):
+        return;
+    def start(self):
+        return;
+    def test(self):
+        return;
+    def status(self):
+        return;
+    
+    
+    def peek32(self,address, memory="vn"):
+        return (self.peek16(address,memory)+
+                (self.peek16(address+2,memory)<<16));
+    def peek16(self,address, memory="vn"):
+        return (self.peek8(address,memory)+
+                (self.peek8(address+1,memory)<<8));
+    def peek8(self,address, memory="vn"):
+        return 0xde;