X-Git-Url: http://git.rot13.org/?p=goodfet;a=blobdiff_plain;f=client%2FGoodFET.py;h=ec65900b599aaab1e4a8add2b2245f51b867a912;hp=cf01c85cd341d9a13bb677208f4cba5a157c89c8;hb=15750ecb20e3f348c419f0666452534c8b6a0b8e;hpb=2b654b579b948558edecc63dd7ab3aa4543f050d

diff --git a/client/GoodFET.py b/client/GoodFET.py
index cf01c85..ec65900 100755
--- a/client/GoodFET.py
+++ b/client/GoodFET.py
@@ -47,27 +47,65 @@ class GoodFET:
         if(self.verb!=0x7F):
             print "Verb %02x is wrong.  Incorrect firmware?" % self.verb;
         #print "Connected."
-    def writecmd(self, app, verb, count=0, data=[], blocks=1):
+    def getbuffer(self,size=0x1c00):
+        writecmd(0,0xC2,[size&0xFF,(size>>16)&0xFF]);
+        print "Got %02x%02x buffer size." % (self.data[1],self.data[0]);
+    def writecmd(self, app, verb, count=0, data=[]):
         """Write a command and some data to the GoodFET."""
         self.serialport.write(chr(app));
         self.serialport.write(chr(verb));
-        self.serialport.write(chr(count));
+        
+        
+        #print "TX %02x %02x" % (app,verb);
+        
+        #little endian 16-bit length
+        self.serialport.write(chr(count&0xFF));
+        self.serialport.write(chr(count>>8));
+        
         #print "count=%02x, len(data)=%04x" % (count,len(data));
+        
         if count!=0:
-            for d in data:
-                self.serialport.write(chr(d));
+            for i in range(0,count):
+                #print "Converting %02x at %i" % (data[i],i)
+                data[i]=chr(data[i]);
+            outstr=''.join(data);
+            self.serialport.write(outstr);
+        if not self.besilent:
+            self.readcmd();
         
-        self.readcmd(blocks);  #Uncomment this later, to ensure a response.
-    def readcmd(self,blocks=1):
+    besilent=0;
+    app=0;
+    verb=0;
+    count=0;
+    data="";
+
+    def readcmd(self):
         """Read a reply from the GoodFET."""
-        self.app=ord(self.serialport.read(1));
-        self.verb=ord(self.serialport.read(1));
-        self.count=ord(self.serialport.read(1));
-        self.data=self.serialport.read(self.count*blocks);
-        #print "READ %02x %02x %02x " % (self.app, self.verb, self.count);
-        return self.data;
-        
+        while 1:
+            #print "Reading...";
+            self.app=ord(self.serialport.read(1));
+            #print "APP=%2x" % self.app;
+            self.verb=ord(self.serialport.read(1));
+            #print "VERB=%02x" % self.verb;
+            self.count=(
+                ord(self.serialport.read(1))
+                +(ord(self.serialport.read(1))<<8)
+                );
+            
+            #Debugging string; print, but wait.
+            if self.app==0xFF and self.verb==0xFF:
+                print "DEBUG %s" % self.serialport.read(self.count);
+            else:
+                self.data=self.serialport.read(self.count);
+                return self.data;
+    
     #Monitor stuff
+    def silent(self,s=0):
+        """Transmissions halted when 1."""
+        self.besilent=s;
+        print "besilent is %i" % self.besilent;
+        self.writecmd(0,0xB0,1,[s]);
+        
     def out(self,byte):
         """Write a byte to P5OUT."""
         self.writecmd(0,0xA1,1,[byte]);