X-Git-Url: http://git.rot13.org/?p=goodfet;a=blobdiff_plain;f=client%2FGoodFET.py;h=da652c3a447c797aaa32f91b20b327c2c328dcf5;hp=a4d07c23d58c8c7deb3c1ff4ecd984d22fcd25d5;hb=43d125b5bca16f0941450bee6ba7bd94ab41dc72;hpb=3e900862cd87255c698e516c37078163ce343e77

diff --git a/client/GoodFET.py b/client/GoodFET.py
index a4d07c2..da652c3 100755
--- a/client/GoodFET.py
+++ b/client/GoodFET.py
@@ -3,57 +3,121 @@
 # 
 # (C) 2009 Travis Goodspeed <travis at radiantmachines.com>
 #
-# This code is ugly as sin, for bootstrapping the firmware only.
-# Rewrite cleanly as soon as is convenient.
+# This code is being rewritten and refactored.  You've been warned!
 
-import sys, time, string, cStringIO, struct
-sys.path.append("/usr/lib/tinyos")
-import serial
+import sys, time, string, cStringIO, struct, glob, serial, os;
 
 
 class GoodFET:
+    """GoodFET Client Library"""
     def __init__(self, *args, **kargs):
         self.data=[0];
     def timeout(self):
-        print "timout\n";
-    def serInit(self, port):
+        print "timeout\n";
+    def serInit(self, port=None):
         """Open the serial port"""
+        
+        if port is None and os.environ.get("GOODFET")!=None:
+            glob_list = glob.glob(os.environ.get("GOODFET"));
+            if len(glob_list) > 0:
+                port = glob_list[0];
+        if port is None:
+            glob_list = glob.glob("/dev/tty.usbserial*");
+            if len(glob_list) > 0:
+                port = glob_list[0];
+        if port is None:
+            glob_list = glob.glob("/dev/ttyUSB*");
+            if len(glob_list) > 0:
+                port = glob_list[0];
+        
         self.serialport = serial.Serial(
             port,
-            9600,
+            #9600,
+            115200,
             parity = serial.PARITY_NONE
             )
+        
+        #Explicitly set RTS
+        self.serialport.setRTS(1);
         #Drop DTR, which is !RST, low to begin the app.
         self.serialport.setDTR(0);
         self.serialport.flushInput()
         self.serialport.flushOutput()
         
         #Read and handle the initial command.
-        time.sleep(1);
+        #time.sleep(1);
         self.readcmd(); #Read the first command.
         if(self.verb!=0x7F):
-            print "Verb is wrong.  Incorrect firmware?";
-        
-    def writecmd(self, app, verb, count, data):
+            print "Verb %02x is wrong.  Incorrect firmware?" % self.verb;
+        #print "Connected."
+    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));
+        
+        #if data!=None:
+        #    count=len(data); #Initial count ignored.
+        
+        #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));
-        self.readcmd();  #Uncomment this later, to ensure a response.
+            for i in range(0,count):
+                #print "Converting %02x at %i" % (data[i],i)
+                data[i]=chr(data[i]);
+            outstr=''.join(data);
+            #outstr=data;
+            self.serialport.write(outstr);
+        if not self.besilent:
+            self.readcmd();
+        
+    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));
-        if self.count>0:
-            self.data=self.serialport.read(self.count);
-        #print "READ %02x %02x %02x " % (self.app, self.verb, self.count);
-        
+        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]);
+    def dir(self,byte):
+        """Write a byte to P5DIR."""
+        self.writecmd(0,0xA0,1,[byte]);
     def peekbyte(self,address):
         """Read a byte of memory from the monitor."""
         self.data=[address&0xff,address>>8];
@@ -68,23 +132,65 @@ class GoodFET:
         self.data=[address&0xff,address>>8,value];
         self.writecmd(0,0x03,3,self.data);
         return ord(self.data[0]);
+    def dumpmem(self,begin,end):
+        i=begin;
+        while i<end:
+            print "%04x %04x" % (i, self.peekword(i));
+            i+=2;
+    def monitor_ram_pattern(self):
+        """Overwrite all of RAM with 0xBEEF."""
+        self.writecmd(0,0x90,0,self.data);
+        return;
+    def monitor_ram_depth(self):
+        """Determine how many bytes of RAM are unused by looking for 0xBEEF.."""
+        self.writecmd(0,0x91,0,self.data);
+        return ord(self.data[0])+(ord(self.data[1])<<8);
+    
+    #Baud rates.
+    baudrates=[115200, 
+               9600,
+               19200,
+               38400,
+               57600,
+               115200];
     def setBaud(self,baud):
-        rates=[9600, 9600, 19200, 38400];
+        """Change the baud rate.  TODO fix this."""
+        rates=self.baudrates;
         self.data=[baud];
-        print "Changing baud."
+        print "Changing FET baud."
         self.serialport.write(chr(0x00));
         self.serialport.write(chr(0x80));
         self.serialport.write(chr(1));
         self.serialport.write(chr(baud));
         
-        print "Changed baud."
+        print "Changed host baud."
         self.serialport.setBaudrate(rates[baud]);
+        time.sleep(1);
+        self.serialport.flushInput()
+        self.serialport.flushOutput()
+        
+        print "Baud is now %i." % rates[baud];
         return;
+    def readbyte(self):
+        return ord(self.serialport.read(1));
+    def findbaud(self):
+        for r in self.baudrates:
+            print "\nTrying %i" % r;
+            self.serialport.setBaudrate(r);
+            #time.sleep(1);
+            self.serialport.flushInput()
+            self.serialport.flushOutput()
+            
+            for i in range(1,10):
+                self.readbyte();
+            
+            print "Read %02x %02x %02x %02x" % (
+                self.readbyte(),self.readbyte(),self.readbyte(),self.readbyte());
     def monitortest(self):
         """Self-test several functions through the monitor."""
         print "Performing monitor self-test.";
         
-        if self.peekword(0x0c00)!=0x0c04:
+        if self.peekword(0x0c00)!=0x0c04 and self.peekword(0x0c00)!=0x0c06:
             print "ERROR Fetched wrong value from 0x0c04.";
         self.pokebyte(0x0021,0); #Drop LED
         if self.peekbyte(0x0021)!=0:
@@ -93,105 +199,22 @@ class GoodFET:
         
         print "Self-test complete.";
     
-    def spisetup(self):
-        """Moved the FET into the SPI application."""
-        self.writecmd(1,0x10,0,self.data); #SPI/SETUP
-        #self.readcmd();
-    def spitrans8(self,byte):
-        """Read and write 8 bits by SPI."""
-        self.data=[byte];
-        self.writecmd(1,0,1,self.data);    #SPI exchange
-        #self.readcmd();
-        
-        if self.app!=1 or self.verb!=0:
-            print "Error in SPI transaction; app=%02x, verb=%02x" % (self.app, self.verb);
-        return ord(self.data[0]);
-    def MSP430setup(self):
-        """Move the FET into the MSP430 JTAG application."""
-        print "Initializing MSP430.";
-        self.writecmd(0x11,0x10,0,self.data);
-    def MSP430peek(self,adr):
-        """Read the contents of memory at an address."""
-        self.data=[adr&0xff, (adr&0xff00)>>8];
-        self.writecmd(0x11,0x02,2,self.data);
-        return ord(self.data[0])+(ord(self.data[1])<<8);
-    def MSP430poke(self,adr,val):
-        """Read the contents of memory at an address."""
-        self.data=[adr&0xff, (adr&0xff00)>>8, val&0xff, (val&0xff00)>>8];
-        self.writecmd(0x11,0x03,4,self.data);
-        return;# ord(self.data[0])+(ord(self.data[1])<<8);
     
-    def MSP430start(self):
-        """Start debugging."""
-        self.writecmd(0x11,0x20,0,self.data);
-        ident=self.MSP430ident();
-        print "Target identifies as %04x." % ident;
-        
-    def MSP430stop(self):
-        """Stop debugging."""
-        self.writecmd(0x11,0x21,0,self.data);
-    def MSP430haltcpu(self):
-        """Halt the CPU."""
-        self.writecmd(0x11,0xA0,0,self.data);
-    def MSP430releasecpu(self):
-        """Resume the CPU."""
-        self.writecmd(0x11,0xA1,0,self.data);
 
-    def MSP430shiftir8(self,ins):
-        """Shift the 8-bit Instruction Register."""
-        data=[ins];
-        self.writecmd(0x11,0x80,1,data);
+    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 MSP430shiftdr16(self,dat):
-        """Shift the 16-bit Data Register."""
-        data=[dat&0xFF,(dat&0xFF00)>>8];
-        self.writecmd(0x11,0x81,2,data);
-        return ord(self.data[0])#+(ord(self.data[1])<<8);
-    def MSP430setinstrfetch(self):
-        """Set the instruction fetch mode."""
-        self.writecmd(0x11,0xC1,0,self.data);
-        return self.data[0];
-    def MSP430ident(self):
-        """Grab self-identification word from 0x0FF0 as big endian."""
-        i=self.MSP430peek(0x0ff0);
-        return ((i&0xFF00)>>8)+((i&0xFF)<<8)
-    def MSP430test(self):
-        """Test MSP430 JTAG.  Requires that a chip be attached."""
-        if self.MSP430ident()==0xffff:
-            print "Is anything connected?";
-        print "Testing RAM.";
-        temp=self.MSP430peek(0x0200);
-        self.MSP430poke(0x0200,0xdead);
-        if(self.MSP430peek(0x0200)!=0xdead):
-            print "Poke of 0x0200 did not set to 0xDEAD properly.";
-            return;
-        self.MSP430poke(0x0200,temp); #restore old value.
-    def MSP430flashtest(self):
-        self.MSP430masserase();
-        i=0x2500;
-        while(i<0x2600):
-            if(self.MSP430peek(i)!=0xFFFF):
-                print "ERROR: Unerased flash at %04x."%i;
-            self.MSP430writeflash(i,0x0000);
-            i+=2;
-    def MSP430masserase(self):
-        """Erase MSP430 flash memory."""
-        self.writecmd(0x11,0xE3,0,None);
-    def MSP430writeflash(self,adr,val):
-        """Write a word of flash memory."""
-        data=[adr&0xFF,(adr&0xFF00)>>8,val&0xFF,(val&0xFF00)>>8];
-        self.writecmd(0x11,0xE1,4,data);
-        rval=ord(self.data[0])+(ord(self.data[1])<<8);
-        if(val!=rval):
-            print "FLASH WRITE ERROR AT %04x.  Found %04x, wrote %04x." % (adr,rval,val);
-            sys.exit(1);
-    def MSP430dumpbsl(self):
-        self.MSP430dumpmem(0xC00,0xfff);
-    def MSP430dumpallmem(self):
-        self.MSP430dumpmem(0x200,0xffff);
-    def MSP430dumpmem(self,begin,end):
-        i=begin;
-        while i<end:
-            print "%04x %04x" % (i, self.MSP430peek(i));
-            i+=2;
-