import sys, time, string, cStringIO, struct, glob, serial, os;
import sqlite3;
+fmt = ("B", "<H", None, "<L")
+
def getClient(name="GoodFET"):
import GoodFET, GoodFETCC, GoodFETAVR, GoodFETSPI, GoodFETMSP430;
if(name=="GoodFET" or name=="monitor"): return GoodFET.GoodFET();
class GoodFET:
"""GoodFET Client Library"""
+
+ besilent=0;
+ app=0;
+ verb=0;
+ count=0;
+ data="";
+ verbose=False
GLITCHAPP=0x71;
+ MONITORAPP=0x00;
symbols=SymbolTable();
def __init__(self, *args, **kargs):
return self.symbols.get(name);
def timeout(self):
print "timeout\n";
- def serInit(self, port=None):
+ def serInit(self, port=None, timeout=2):
"""Open the serial port"""
+ # Make timeout None to wait forever, 0 for non-blocking mode.
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];
+ else:
+ port = os.environ.get("GOODFET");
if port is None:
glob_list = glob.glob("/dev/tty.usbserial*");
if len(glob_list) > 0:
if len(glob_list) > 0:
port = glob_list[0];
+
self.serialport = serial.Serial(
port,
#9600,
115200,
- parity = serial.PARITY_NONE
+ parity = serial.PARITY_NONE,
+ timeout=timeout
)
- #This might cause problems, but it makes failure graceful.
- #self.serialport._timeout = 5;
+ self.verb=0;
+ attempts=0;
+ connected=0;
+ while connected==0:
+ while self.verb!=0x7F or self.data!="http://goodfet.sf.net/":
+ #print "Resyncing.";
+ self.serialport.flushInput()
+ self.serialport.flushOutput()
+ #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.flushOutput()
+ #time.sleep(60);
+ attempts=attempts+1;
+ self.readcmd(); #Read the first command.
+ #Here we have a connection, but maybe not a good one.
+ connected=1;
+ olds=self.infostring();
+ clocking=self.monitorclocking();
+ for foo in range(1,30):
+ if not self.monitorecho():
+ if self.verbose: print "Comm error on %i try, resyncing out of %s." % (foo,
+ clocking);
+ connected=0;
+ break;
+ if self.verbose: print "Connected after %02i attempts." % attempts;
+ self.mon_connected();
- #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.flushOutput()
-
- #Read and handle the initial command.
- #time.sleep(1);
- self.readcmd(); #Read the first command.
- if(self.verb!=0x7F):
- 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]);
#little endian 16-bit length
self.serialport.write(chr(count&0xFF));
self.serialport.write(chr(count>>8));
+
+ if self.verbose:
+ print "Tx: ( 0x%02x, 0x%02x, 0x%04x )" % ( app, verb, count )
#print "count=%02x, len(data)=%04x" % (count,len(data));
outstr=''.join(data);
self.serialport.write(outstr);
if not self.besilent:
- self.readcmd();
-
- besilent=0;
- app=0;
- verb=0;
- count=0;
- data="";
+ return self.readcmd()
+ else:
+ return []
def readcmd(self):
"""Read a reply from the GoodFET."""
- 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)
- );
+ while 1:#self.serialport.inWaiting(): # Loop while input data is available
+ try:
+ #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)
+ );
+
+ if self.verbose:
+ print "Rx: ( 0x%02x, 0x%02x, 0x%04x )" % ( self.app, self.verb, self.count )
- #Debugging string; print, but wait.
- if self.app==0xFF and self.verb==0xFF:
- print "# DEBUG %s" % self.serialport.read(self.count);
- sys.stdout.flush();
- else:
- self.data=self.serialport.read(self.count);
+ #Debugging string; print, but wait.
+ if self.app==0xFF:
+ if self.verb==0xFF:
+ print "# DEBUG %s" % self.serialport.read(self.count)
+ elif self.verb==0xFE:
+ print "# DEBUG 0x%x" % struct.unpack(fmt[self.count-1], self.serialport.read(self.count))[0]
+ sys.stdout.flush();
+ else:
+ self.data=self.serialport.read(self.count);
+ return self.data;
+ except TypeError:
+ if self.connected:
+ print "Error: waiting for serial read timed out (most likely).";
+ print "This shouldn't happen after syncing. Exiting for safety.";
+ sys.exit(-1)
return self.data;
#Glitching stuff.
def glitchApp(self,app):
self.besilent=s;
print "besilent is %i" % self.besilent;
self.writecmd(0,0xB0,1,[s]);
-
+ connected=0;
+ def mon_connected(self):
+ """Announce to the monitor that the connection is good."""
+ self.connected=1;
+ self.writecmd(0,0xB1,0,[]);
def out(self,byte):
"""Write a byte to P5OUT."""
self.writecmd(0,0xA1,1,[byte]);
def monitortest(self):
"""Self-test several functions through the monitor."""
print "Performing monitor self-test.";
-
- 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:
- print "ERROR, P1OUT not cleared.";
- self.pokebyte(0x0021,1); #Light LED
-
+ self.monitorclocking();
+ for f in range(0,3000):
+ a=self.peekword(0x0c00);
+ b=self.peekword(0x0c02);
+ if a!=0x0c04 and a!=0x0c06:
+ print "ERROR Fetched %04x, %04x" % (a,b);
+ self.pokebyte(0x0021,0); #Drop LED
+ if self.peekbyte(0x0021)!=0:
+ print "ERROR, P1OUT not cleared.";
+ self.pokebyte(0x0021,1); #Light LED
+ if not self.monitorecho():
+ print "Echo test failed.";
print "Self-test complete.";
-
-
+ self.monitorclocking();
+ def monitorecho(self):
+ data="The quick brown fox jumped over the lazy dog.";
+ self.writecmd(self.MONITORAPP,0x81,len(data),data);
+ if self.data!=data:
+ if self.verbose: print "Comm error recognized by monitorecho().";
+ return 0;
+ return 1;
+ def monitorclocking(self):
+ DCOCTL=self.peekbyte(0x0056);
+ BCSCTL1=self.peekbyte(0x0057);
+ return "0x%02x, 0x%02x" % (DCOCTL, BCSCTL1);
+
# The following functions ought to be implemented in
# every client.
projects / goodfet / blobdiff