Raspberry Pi Interface to Cosmac Elf
elf2bin Utility
Copies the Elf (Membership Card) memory to a binary file on the Raspberry Pi.
The Raspberry Pi GPIO is used as interface to the Cosmac Elf SBC (e.g. Elf Membership Card parallel port).
pi@cosmac:~/elf/RaspiElf/chase $ bin2elf -e 7fff </dev/zero
0x8000 bytes written
pi@cosmac:~/elf/RaspiElf/chase $ bin2elf -w -r chase.bin
0x002d bytes written
pi@cosmac:~/elf/RaspiElf/chase $ elf load
01 1 0 0 1 1 0 0c
pi@cosmac:~/elf/RaspiElf/chase $ elf2bin -e 3f | hexdump -C
0x0040 bytes read
00000000 c0 00 03 e3 90 b3 f8 30 a3 f8 01 53 64 6c 23 fa |.......0...Sdl#.|
00000010 fe 3a 1a f0 f6 c7 f8 80 30 1f f0 fe c7 f8 01 53 |.:......0......S|
00000020 f8 14 b2 22 92 3a 23 c5 7a 38 7b 30 0c 00 00 00 |...".:#.z8{0....|
00000030 04 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000040
pi@cosmac:~/elf/RaspiElf/chase $ elf
02 1 1 0 1 1 1 ff
pi@cosmac:~/elf/RaspiElf/chase $ elf -n read
02 1 1 0 1 1 0 ff
pi@cosmac:~/elf/RaspiElf/chase $ elf run
pi@cosmac:~/elf/RaspiElf/chase $ elf put 0
40 1 1 0 0 0 0 00
pi@cosmac:~/elf/RaspiElf/chase $ elf put 80
10 1 1 0 0 0 0 80
pi@cosmac:~/elf/RaspiElf/chase $ elf -v
LED:40 Q:1 Rx:1 IN:0 WAIT:0 CLR:0 READ:0 SWITCH:80
pi@cosmac:~/elf/RaspiElf/chase $ elf -v
LED:02 Q:0 Rx:1 IN:0 WAIT:0 CLR:0 READ:0 SWITCH:80
bin2elf Utility
http://hex2bin.sourceforge.net/
hexdump
/dev/null
elf CLI Tool
- elf [-i] [-v] [-s ] [load|run|wait|reset|write|get|put] []
LED Q IN WAIT CLEAR WRITE SWITCH
-i increment
-v verbose
wiringPi
Pi Pin# |
Pi Function |
Elf Pin DSUB J2 |
POWER P4 |
Elf Function |
1 |
3.3 V |
(18) |
(3) |
(VIN, +) |
2 |
5 V |
(18) |
3 |
VIN, + |
3 |
BCM 2, SDA |
|
|
|
4 |
5 V |
|
|
|
5 |
BCM 3, SCL |
|
|
|
6 |
GND |
(19) |
1 |
GND, - |
7 |
BCM 4 |
1, in |
|
IN- (EF4) |
8 |
BCM 14, TXD |
(20) |
4, in |
RXD, RX (EF3) |
9 |
GND |
21 |
6 |
GND, /ON |
10 |
BCM 15, RXD |
(15) |
5, out, Cathode |
TXD, TX (Q) |
11 |
BCM 17 |
14, in |
|
WAIT- |
12 |
BCM 18 |
16, in |
|
CLR- |
13 |
BCM 27 |
17, in |
|
WE- |
14 |
GND |
|
|
|
15 |
BCM 22 |
2, in |
|
IN0 |
16 |
BCM 23 |
3, in |
|
IN1 |
17 |
3.3 V |
|
|
|
18 |
BCM 24 |
4, in |
|
IN2 |
19 |
BCM 10, MOSI |
5, in |
|
IN3 |
20 |
GND |
|
|
|
21 |
BCM 9, MISO |
6, in |
|
IN4 |
22 |
BCM 25 |
7, in |
|
IN5 |
23 |
BCM 11,SCLK |
8, in |
|
IN6 |
24 |
BCM 8, CE0 |
9, in |
|
IN7 |
25 |
GND |
|
|
|
26 |
BCM 7, CE1 |
25, out, Cathode |
|
O0 (*) |
27 |
BCM 0 |
|
|
|
28 |
BCM 1 |
|
|
|
29 |
BCM 5 |
24, out, Cathode |
|
O1 (*) |
30 |
GND |
|
|
|
31 |
BCM 6 |
23, out, Cathode |
|
O2 (*) |
32 |
BCM 12 |
22, out, Cathode |
|
O3 (*) |
33 |
BCM 13 |
13, out, Cathode |
|
O4 (*) |
34 |
GND |
|
|
|
35 |
BCM 19 |
12, out, Cathode |
|
O5 (*) |
36 |
BCM 16 |
10, out, Cathode |
|
O6 (*) |
37 |
BCM 26 |
11, out, Cathode |
|
O7 (*) |
38 |
BCM 20 |
|
|
|
39 |
GND |
|
|
|
40 |
BCM 21 |
|
|
|
Other Tools
hex2bin
Intel Hex or Motorola Hex file converter.
http://hex2bin.sourceforge.net/
> tar xvjf Hex2bin-2.5.tar.bz2
> make
> sudo make install
--
Peter Schmid - 2017-11-26
Comments
- gpio-numbers-pi2.png: