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

   1 #!/usr/bin/env python
   2 # GoodFET SPI and SPIFlash Client Library
   3 #
   4 # (C) 2009 Travis Goodspeed <travis at radiantmachines.com>
   5 #
   6 # This code is being rewritten and refactored.  You've been warned!
   7
   8 import sys, time, string, cStringIO, struct, glob, serial, os;
   9
  10 from GoodFET import GoodFET;
  11
  12 class GoodFETAVR(GoodFET):
  13     AVRAPP=0x32;
  14     APP=AVRAPP;
  15     AVRVendors={0x1E: "Atmel",
  16                 0x00: "Locked",
  17                 };
  18
  19     #List imported from http://avr.fenceline.de/device_data.html
  20     AVRDevices={
  21         0x9003: "ATtiny10",
  22         0x9004: "ATtiny11",
  23         0x9005: "ATtiny12",
  24         0x9007: "ATtiny13",
  25         0x9006: "ATtiny15",
  26         0x9106: "ATtiny22",
  27         0x910A: "ATtiny2313",
  28         0x9108: "ATtiny25",
  29         0x9109: "ATtiny26",
  30         0x9107: "ATtiny28",
  31         0x9206: "ATtiny45",
  32         0x930B: "ATtiny85",
  33         0x9304: "AT90C8534",
  34         0x9001: "AT90S1200",
  35         0x9101: "AT90S2313",
  36         0x9102: "AT90S2323",
  37         0x9105: "AT90S2333",
  38         0x9103: "AT90S2343",
  39         0x9201: "AT90S4414",
  40         0x9203: "AT90S4433",
  41         0x9202: "AT90S4434",
  42         0x9301: "AT90S8515",
  43         0x9303: "AT90S8535",
  44         0x9381: "AT90PWM2",
  45         0x9381: "AT90PWM3",
  46         0x9781: "AT90CAN128",
  47         0x9205: "ATmega48",
  48         0x9306: "ATmega8515",
  49         0x9308: "ATmega8535",
  50         0x9307: "ATmega8",
  51         0x930A: "ATmega88",
  52         0x9403: "ATmega16",
  53         0x9401: "ATmega161",
  54         0x9404: "ATmega162",
  55         0x9402: "ATmega163",
  56         0x9407: "ATmega165",
  57         0x9406: "ATmega168",
  58         0x9405: "ATmega169",
  59         0x9502: "ATmega32",
  60         0x9501: "ATmega323",
  61         0x9503: "ATmega325",
  62         0x9504: "ATmega3250",
  63         0x9503: "ATmega329",
  64         0x9504: "ATmega3290",
  65         0x9507: "ATmega406",
  66         0x9602: "ATmega64",
  67         0x9607: "ATmega640",
  68         0x9603: "ATmega645",
  69         0x9604: "ATmega6450",
  70         0x9603: "ATmega649",
  71         0x9604: "ATmega6490",
  72         0x0101: "ATmega103",
  73         0x9701: "ATmega103",
  74         0x9702: "ATmega128",
  75         0x9703: "ATmega1280",
  76         0x9704: "ATmega1281",
  77         0x9801: "ATmega2560",
  78         0x9802: "ATmega2561",
  79         0x9002: "ATtiny19",
  80         0x9302: "ATmega85",
  81         0x9305: "ATmega83",
  82         0x9601: "ATmega603",
  83         };
  84
  85     def setup(self):
  86         """Move the FET into the AVR application."""
  87         self.writecmd(self.AVRAPP,0x10,0,self.data); #SPI/SETUP
  88
  89     def trans(self,data):
  90         """Exchange data by AVR.
  91         Input should probably be 4 bytes."""
  92         self.data=data;
  93         self.writecmd(self.AVRAPP,0x00,len(data),data);
  94         return self.data;
  95
  96     def start(self):
  97         """Start the connection."""
  98         self.writecmd(self.AVRAPP,0x20,0,None);
  99     def forcestart(self):
 100         """Forcibly start a connection."""
 101
 102         for i in range(0x880,0xfff):
 103             #self.glitchVoltages(0x880, i);
 104             self.start();
 105             bits=self.lockbits();
 106             print "At %04x, Lockbits: %02x" % (i,bits);
 107             if(bits==0xFF): return;
 108     def erase(self):
 109         """Erase the target chip."""
 110         self.writecmd(self.AVRAPP,0xF0,0,None);
 111     def lockbits(self):
 112         """Read the target's lockbits."""
 113         self.writecmd(self.AVRAPP,0x82,0,None);
 114         return ord(self.data[0]);
 115     def setlockbits(self,bits=0x00):
 116         """Read the target's lockbits."""
 117         self.writecmd(self.AVRAPP,0x92,1,[bits]);
 118         return self.lockbits();
 119     def lock(self):
 120         self.setlockbits(0xFC);
 121     def eeprompeek(self, adr):
 122         """Read a byte of the target's EEPROM."""
 123         self.writecmd(self.AVRAPP,0x81 ,2,
 124                       [ (adr&0xFF), (adr>>8)]
 125                       );#little-endian address
 126         return ord(self.data[0]);
 127     def flashpeek(self, adr):
 128         """Read a byte of the target's Flash memory."""
 129         self.writecmd(self.AVRAPP,0x02 ,2,
 130                       [ (adr&0xFF), (adr>>8)]
 131                       );#little-endian address
 132         return ord(self.data[0]);
 133     def flashpeekblock(self, adr):
 134         """Read a byte of the target's Flash memory."""
 135         self.writecmd(self.AVRAPP,0x02 ,4,
 136                       [ (adr&0xFF), (adr>>8) &0xFF, 0x80, 0x00]
 137                       );
 138         return self.data;
 139
 140     def eeprompoke(self, adr, val):
 141         """Write a byte of the target's EEPROM."""
 142         self.writecmd(self.AVRAPP,0x91 ,3,
 143                       [ (adr&0xFF), (adr>>8), val]
 144                       );#little-endian address
 145         return ord(self.data[0]);
 146
 147     def identstr(self):
 148         """Return an identifying string."""
 149         self.writecmd(self.AVRAPP,0x83,0, None);
 150         vendor=self.AVRVendors.get(ord(self.data[0]));
 151         deviceid=(ord(self.data[1])<<8)+ord(self.data[2]);
 152         device=self.AVRDevices.get(deviceid);
 153
 154         #Return hex if device is unknown.
 155         #They are similar enough that it needn't be known.
 156         if device==None:
 157             device=("0x%04x" % deviceid);
 158
 159         return "%s %s" % (vendor,device);