2 # GoodFET SPI Flash Client
4 # (C) 2012 Travis Goodspeed <travis at radiantmachines.com>
6 # This code is being rewritten and refactored. You've been warned!
12 from GoodFETMCPCAN import GoodFETMCPCAN;
13 from intelhex import IntelHex;
16 print "Usage: %s verb [objects]\n" % sys.argv[0];
17 print "%s info" % sys.argv[0];
18 print "%s test" % sys.argv[0];
19 print "%s peek 0x$start [0x$stop]" % sys.argv[0];
20 #print "%s poke 0x$adr 0x$val" % sys.argv[0];
22 print "\n%s sniff" % sys.argv[0];
25 #Initialize FET and set baud rate
26 client=GoodFETMCPCAN();
33 #Might read as all ones if chip has a startup delay.
35 if(sys.argv[1]=="info"):
36 print "MCP2515 Info:\n\n";
38 print "Mode: %s" % client.MCPcanstatstr();
39 print "Read Status: %02x" % client.MCPreadstatus();
40 print "Rx Status: %02x" % client.MCPrxstatus();
41 print "Tx Errors: %3d" % client.peek8(0x1c);
42 print "Rx Errors: %3d" % client.peek8(0x1d);
44 packet0=client.readrxbuffer(0);
45 packet1=client.readrxbuffer(1);
46 for foo in [packet0, packet1]:
47 print client.packet2str(foo);
48 if(sys.argv[1]=="sniff"):
49 client.MCPreqstatListenOnly();
51 packet=client.rxpacket();
53 print client.packet2str(packet);
55 if(sys.argv[1]=="test"):
56 print "MCP2515 Self Test:";
58 #Switch to config mode and try to rewrite TEC.
59 client.MCPreqstatConfiguration();
60 client.poke8(0x00,0xde);
61 if client.peek8(0x00)!=0xde:
62 print "ERROR: Poke to TEC failed.";
64 print "SUCCESS: Register read/write.";
66 #Switch to Loopback mode and try to catch our own packet.
67 client.MCPreqstatLoopback();
68 client.txpacket([0xb1, 0x6b, 0x00, 0x65,
69 0xb1, 0x6b, 0x00, 0x65
71 print "Waiting on loopback packet.";
74 packet=client.rxpacket();
75 print "Success! Got %s" % client.packet2str(packet);
76 if(sys.argv[1]=="peek"):
79 start=int(sys.argv[2],16);
82 stop=int(sys.argv[3],16);
83 print "Peeking from %04x to %04x." % (start,stop);
85 print "%04x: %02x" % (start,client.peek8(start));