====== OPIone - Světla ======
===== WiringPi - ovládání GPIO =====
[[http://www.orangepi.org/Docs/WiringPi.html|dokumentace]] wiring pi
<code bash>git clone https://github.com/zhaolei/WiringOP.git -b h3
cd WiringOP
chmod +x ./build
sudo ./build </code>

po instalaci precteme a zobrazime gpio piny

<code bash>gpio readall</code>

inicializace na zapnuti pinu 23 pro vystup

<code bash>gpio mode 23 out</code>

zapnuti / vypnuti pinu 23

<code bash>gpio write 23 0 && gpio write 23 1</code>
==== osvedcene "standartni nastaveni" ====
<code bash>gpio readall</code>
  * vyhodi tabulku s cislovanim pinu 
  * tabulka nize je jako priklad pro zapojeni 8-port rele

^ na rele  ^ na opi  ^ barva vodice (kvuli homogenite)       ^
| GND      | 0v      | cerny                                 |
| IN1      | wPI 11  | bily                                  |
| IN2      | wPI 24  | sedy                                  |
| IN3      | wPI 23  | ruzovy                                |
| IN4      | wPI 22  | modry                                 |
| IN5      | wPI 21  | zeleny                                |
| IN6      | wPI  1  | zluty                                 |
| IN7      | wPI  4  | oranzovy                              |
| IN8      | wPI  5  | hnedy                                 |
| VCC      | 5v      | cerveny                               |

  * ostatni zapojeni

^pripojena periferie ^jaky wPI pin pouzit ^barva vodice (kvuli homogenite)                              ^
|data pro 433Mhz transmitter | wPI 0 | -                                                                |
|1wire, napriklad na dallas senzor teploty | wPI 25 | -                                                                |

<WRAP center round important 80%>
8-port moduly z ciny je lepsi inicializovat po startu, oproti logice rpi maji otoceny statusy, co je low a co high, proto skript nize spoustim po startu. da mmi to i vizualni kontrolu, ze vsechny svetla nabehnou.
</WRAP>
<file bash relaystart.sh>
#! /bin/sh
# /etc/init.d/relaystart
#
gpio mode 25 out && gpio write 25 0
sleep 1
gpio write 25 1
gpio mode 24 out && gpio write 24 0
sleep 1
gpio write 24 1
gpio mode 23 out && gpio write 23 0
sleep 1
gpio write 23 1
gpio mode 22 out && gpio write 22 0
sleep 1
gpio write 22 1
gpio mode 21 out && gpio write 21 0
sleep 1
gpio write 21 1
gpio mode 1 out && gpio write 1 0
sleep 1
gpio write 1 1
gpio mode 4 out && gpio write 4 0
sleep 1
gpio write 4 1
gpio mode 5 out && gpio write 5 0
sleep 1
gpio write 5 1
</file>
Pokud nam vse funguje pres commandlajnu, muzeme pokracovat:
===== MQTT - mosquitto =====
==== instalace ====

Importujeme [[https://mosquitto.org/|repo eclipse]]:
<code bash>
wget http://repo.mosquitto.org/debian/mosquitto-repo.gpg.key
apt-key add mosquitto-repo.gpg.key</code>
Pridame pro apt, podle verze armbianu:
<code bash>cd /etc/apt/sources.list.d/</code>
<code bash>
wget http://repo.mosquitto.org/debian/mosquitto-wheezy.list
wget http://repo.mosquitto.org/debian/mosquitto-jessie.list
wget http://repo.mosquitto.org/debian/mosquitto-sarge.list
</code>
<code bash>
apt-get update
apt-cache search mosquitto
apt-get install mosquitto
</code>
==== testování ====
subscribe na vsechny topicy (vetsinou jen pro ucely testu)
<code bash>mosquitto_sub -v -h broker_ip -p 1883 -t '#'</code>
a z jine masiny, kde mame nainstalovano pustime 
<code bash>mosquitto_pub -t 'test/topic' -m 'hellopico'</code>

===== mosquitto >> command - mqtt-launcher =====
kdyz nam to funguje, spojime obe casti v celek, za pouziti [[https://github.com/jpmens/mqtt-launcher|mqtt-launcher]]
potrebujeme pip
<code bash>apt-get install python-pip
pip install paho-mqtt</code>
launcher.conf.example prejmenujeme na launcher.conf:

<file>logfile = 'logfile'
mqtt_broker = 'ip-brokera'      # default: 'localhost'
mqtt_port = 1883                # default: 1883
mqtt_clientid = 'mqtt-launcher-1'
mqtt_username = 
mqtt_password = 
topiclist = {
   # topic                     payload value       program & arguments
   "sys/file"          :   {
                               'create'        :   [ '/usr/bin/touch', '/tmp/file.one' ],
                               'false'         :   [ '/bin/rm', '-f', '/tmp/file.one'    ],
                               'info'          :   [ '/bin/ls', '-l', '/tmp/file.one' ],
                           },
   "prog/pwd"          :   {
                               None            :   [ 'pwd' ],
                           },
   "dev/1"             :   {
                               None            :   [ 'ls', '-l', '/' ],
                           },
   "dev/2"             :   {
                               None            :   [ "/bin/echo", "111", "*", "@!@", "222", "@!@", "333" ],
                           },
}</file>

editujeme mqtt-launcher.py, protoze musime pridat "self", aby vysledny radek vypadal 
<code>def on_connect(self, mosq, userdata, result_code):</code>