git.rot13.org Git - goodfet/blob - client/goodfet

   1 #!/usr/bin/env python
   2 # GoodFET Client Application
   3 #
   4 # (C) 2009 Travis Goodspeed <travis at radiantmachines.com>
   5 #
   6 # This code is ugly as sin, for bootstrapping the firmware only.
   7 # Rewrite cleanly as soon as is convenient.
   8
   9 import sys, time, string, cStringIO, struct
  10 sys.path.append("/usr/lib/tinyos")
  11 import serial
  12
  13
  14 class Client:
  15     def __init__(self, *args, **kargs):
  16         print "inited\n";
  17     def timeout(self):
  18         print "timout\n";
  19     def serInit(self, port):
  20         """Open the serial port"""
  21         self.serialport = serial.Serial(
  22             port,
  23             9600,
  24             parity = serial.PARITY_NONE
  25             )
  26         #Drop DTR, which is !RST, low to begin the app.
  27         self.serialport.setDTR(0);
  28         self.serialport.flushInput()
  29         self.serialport.flushOutput()
  30
  31         #Read and handle the initial command.
  32         client.readcmd();
  33         client.handlecmd();
  34
  35         time.sleep(1);
  36     def writecmd(self, app, verb, count, data):
  37         self.serialport.write(chr(app));
  38         self.serialport.write(chr(verb));
  39         self.serialport.write(chr(count));
  40         print "count=%02x, len(data)=%04x" % (count,len(data));
  41         for d in data:
  42             self.serialport.write(chr(d));
  43     def readcmd(self):
  44         self.app=ord(self.serialport.read(1));
  45         self.verb=ord(self.serialport.read(1));
  46         self.count=ord(self.serialport.read(1));
  47         if self.count>0:
  48             self.data=self.serialport.read(self.count);
  49         print "%02x %02x %02x" % (self.app, self.verb, self.count);
  50     def handlemonitor(self):
  51         if self.verb==0x7E:
  52             print "Monitor: NOK";
  53         if self.verb==0x7F:
  54             print "Monitor: OK";
  55     def handlecmd(self):
  56         if self.app==0:
  57             #print "Monitor command."
  58             self.handlemonitor();
  59         else:
  60             print "Unknown application %02x." % self.app
  61
  62     def peekbyte(self,address):
  63         """Read a byte of memory from the monitor."""
  64         self.data=[address&0xff,address>>8];
  65         self.writecmd(0,0x02,2,self.data);
  66         self.readcmd();
  67         return ord(self.data[0]);
  68     def peekword(self,address):
  69         """Read a word of memory from the monitor."""
  70         return self.peekbyte(address)+(self.peekbyte(address+1)<<8);
  71     def pokebyte(self,address,value):
  72         """Set a byte of memory by the monitor."""
  73         self.data=[address&0xff,address>>8,value];
  74         self.writecmd(0,0x03,3,self.data);
  75         self.readcmd();
  76         print "POKE returned %02x" % ord(self.data[0]);
  77         return ord(self.data[0]);
  78
  79     def monitortest(self):
  80         """Self-test several functions through the monitor."""
  81         print "Performing self-test.";
  82
  83         if self.peekword(0x0c00)!=0x0c04:
  84             print "ERROR Fetched wrong value from 0x0c04.";
  85         self.pokebyte(0x0021,0); #Drop LED
  86         if self.peekbyte(0x0021)!=0:
  87             print "ERROR, P1OUT not cleared.";
  88
  89         print "Self-test complete.";
  90
  91 client=Client();
  92 client.serInit("/dev/ttyUSB0")
  93
  94
  95
  96 client.monitortest();
  97