(r1) RaspiElfKeypad < Cosmac

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---+ Hardware

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---+ Software for the Raspberry Pi

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---+ How to get and build the RaspiElf Keypad Software

Get the source from the [[https://github.com/spyren/RaspiElf][GIT repository]] (if you have not installed GIT yet, then install it with
=sudo apt-get install git=), type only the bold text after the $ sign:
<pre>
pi@cosmac:~/elf $ <b>git clone https://github.com/spyren/RaspiElf</b>
Cloning into 'RaspiElf'...
remote: Counting objects: 68, done.
remote: Compressing objects: 100% (37/37), done.
remote: Total 68 (delta 32), reused 62 (delta 29), pack-reused 0
Unpacking objects: 100% (68/68), done.
Checking connectivity... done.
pi@cosmac:~/elf $
</pre>

Build (compile) from the sources:
<pre>
pi@cosmac:~/elf $ <b>cd RaspiElf</b>
pi@cosmac:~/elf/RaspiElf $ <b>cd tools/</b>
pi@cosmac:~/elf/RaspiElf/tools $ <b>make</b>
cc -g -c elf2bin.c
cc -g -c raspi_gpio.c
cc -g -o elf2bin -lwiringPi elf2bin.o raspi_gpio.o
cc -g -c bin2elf.c
cc -g -o bin2elf -lwiringPi bin2elf.o raspi_gpio.o
cc -g -c elf.c
cc -g -o elf -lwiringPi elf.o raspi_gpio.o
pi@cosmac:~/elf/RaspiElf/tools $ 
</pre>

Install the binaries into =/usr/local/bin=
<pre>
pi@cosmac:~/elf/RaspiElf/tools $ <b>sudo make install</b>
install -m 557 elf2bin bin2elf elf /usr/local/bin
</pre>
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---+ Sample session
Type only the bold text after the $ sign.

Initialise the Elf memory with 00H (32 Kib):
<pre>
pi@cosmac:~/elf/RaspiElf/chase $ <b>bin2elf -e 7fff &lt;/dev/zero</b>
0x8000 bytes written
</pre>

Upload and run the chase lighting program (details see ChaseLighting):
<pre>
pi@cosmac:~/elf/RaspiElf/chase $ <b>bin2elf -w -r chase.bin</b>
0x002d bytes written
</pre>

Stop the program an go into the load state:
<pre>
pi@cosmac:~/elf/RaspiElf/chase $ <b>elf load</b>
01 1 0 0 1 1 0 0c
</pre>

Hexdump the Elf memory until address 0x3f (hexdump is standard UNIX tool and is included in Raspbian and other GNU/Linux'):
<pre>
pi@cosmac:~/elf/RaspiElf/chase $ <b>elf2bin -e 3f | hexdump -C</b>
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
</pre>

Get the mode and the data (LEDs and swiches)
<pre>
pi@cosmac:~/elf/RaspiElf/chase $ <b>elf</b>
02 1 1 0 1 1 1 ff
pi@cosmac:~/elf/RaspiElf/chase $ <b>elf -v </b>
LED:01 Q:1 Rx:1 IN:0 WAIT:1 CLR:1 READ:0 SWITCH:0c
</pre>

Write enable (not READ)
<pre>
pi@cosmac:~/elf/RaspiElf/chase $ <b>elf -n read</b>
02 1 1 0 1 1 0 ff
</pre>

Run mode (starts the chase lighting again)
<pre>
pi@cosmac:~/elf/RaspiElf/chase $ <b>elf run</b>
</pre>

Put 0000'0000B to the switches (chase LEDs from right to left)
<pre>
pi@cosmac:~/elf/RaspiElf/chase $ <b>elf put 0</b>
40 1 1 0 0 0 0 00
</pre>

Put 1000'0000B to the switches (chase LEDs from left to right)
<pre>
pi@cosmac:~/elf/RaspiElf/chase $ <b>elf put 80</b>
10 1 1 0 0 0 0 80
</pre>

Get the mode and data while the program is running (LEDs and Q are changing)
<pre>
pi@cosmac:~/elf/RaspiElf/chase $ <b>elf -v</b>
LED:40 Q:1 Rx:1 IN:0 WAIT:0 CLR:0 READ:0 SWITCH:80
pi@cosmac:~/elf/RaspiElf/chase $ <b>elf -v</b>
LED:02 Q:0 Rx:1 IN:0 WAIT:0 CLR:0 READ:0 SWITCH:80
</pre>
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-- %USERSIG{PeterSchmid - 2018-05-03}%

---++!! Comments
Topic revision: r1 - 2018-05-03 - PeterSchmid