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 [kHz]" % sys.argv[0];
23 print "\nSupported rates: 83.3, 100, 125, 250, 500, 1000 kHz.";
26 #Initialize FET and set baud rate
27 client=GoodFETMCPCAN();
34 #Might read as all ones if chip has a startup delay.
36 if(sys.argv[1]=="info"):
37 print "MCP2515 Info:\n\n";
39 print "Mode: %s" % client.MCPcanstatstr();
40 print "Read Status: %02x" % client.MCPreadstatus();
41 print "Rx Status: %02x" % client.MCPrxstatus();
42 print "Tx Errors: %3d" % client.peek8(0x1c);
43 print "Rx Errors: %3d" % client.peek8(0x1d);
45 packet0=client.readrxbuffer(0);
46 packet1=client.readrxbuffer(1);
47 for foo in [packet0, packet1]:
48 print client.packet2str(foo);
49 if(sys.argv[1]=="sniff"):
51 rate=float(sys.argv[2]);
52 client.MCPsetrate(rate);
53 client.MCPreqstatListenOnly();
55 packet=client.rxpacket();
57 print client.packet2str(packet);
59 if(sys.argv[1]=="test"):
60 print "MCP2515 Self Test:";
62 #Switch to config mode and try to rewrite TEC.
63 client.MCPreqstatConfiguration();
64 client.poke8(0x00,0xde);
65 if client.peek8(0x00)!=0xde:
66 print "ERROR: Poke to TEC failed.";
68 print "SUCCESS: Register read/write.";
70 #Switch to Loopback mode and try to catch our own packet.
71 client.MCPreqstatLoopback();
72 client.txpacket([0xb1, 0x6b, 0x00, 0x65,
73 0xb1, 0x6b, 0x00, 0x65
75 print "Waiting on loopback packet.";
78 packet=client.rxpacket();
79 print "Success! Got %s" % client.packet2str(packet);
80 if(sys.argv[1]=="peek"):
83 start=int(sys.argv[2],16);
86 stop=int(sys.argv[3],16);
87 print "Peeking from %04x to %04x." % (start,stop);
89 print "%04x: %02x" % (start,client.peek8(start));