Author | SHA1 | Message | Date |
---|---|---|---|
Alex Volkmann | 74f02bec5b |
Kommentare bearbeitet.
Dokumentation neu generiert. |
5 years ago |
Alex Volkmann | a5d6ef930c | Status abfrage ergänzt und Source Code kommentiert (englisch). | 5 years ago |
Alex Volkmann | 0b6932317f | Dokumentation hinzugefuegt | 5 years ago |
Alex Volkmann | b7fb7de498 |
Update Readme file
move java file |
5 years ago |
Alex Volkmann | 0ab01b19e6 | Update of Application | 5 years ago |
@@ -1 +1,3 @@ | |||
bin/ | |||
bin/ | |||
.classpath | |||
src/gpio_java.class |
@@ -1,27 +1,56 @@ | |||
# Overview | |||
# Deployment | |||
use the following command to transfer project to raspberry pi: | |||
scp -r gpio pi@192.168.1.77:~ | |||
# Regler | |||
Pin GPIO Regler | |||
2 5v VCC | |||
6 GND GND | |||
8 GPIO 14 In1 | |||
10 GPIO 15 In2 | |||
12 GPIO 18 In3 | |||
16 GPIO 23 In4 | |||
18 GPIO 24 In5 | |||
22 GPIO 25 In6 | |||
24 GPIO 8 In7 | |||
26 GPIO 7 In8 | |||
# Overview | |||
# Deployment | |||
use the following command to transfer project to raspberry pi: | |||
``` | |||
scp -r gpio pi@192.168.1.77:~ | |||
``` | |||
# usage | |||
## switch first relais on | |||
``` | |||
java gpio_java rel1 on | |||
``` | |||
## switch first relais off | |||
``` | |||
java gpio_java rel1 off | |||
``` | |||
## read status of first relais | |||
``` | |||
java gpio_java rel1 status | |||
``` | |||
## Create Dokumentation | |||
``` | |||
javadoc -d doc *.java | |||
``` | |||
# Requirements | |||
## HW | |||
* Raspberry PI | |||
## Software | |||
* raspberian url: | |||
# Verbindung zwischen Raspberry Pi und Relais Box | |||
Pin GPIO Relais/Box | |||
* 2 5v VCC | |||
* 6 GND GND | |||
* 8 GPIO 14 In1 | |||
* 10 GPIO 15 In2 | |||
* 12 GPIO 18 In3 | |||
* 16 GPIO 23 In4 | |||
* 18 GPIO 24 In5 | |||
* 22 GPIO 25 In6 | |||
* 24 GPIO 8 In7 | |||
* 26 GPIO 7 In8 | |||
# ToDo | |||
* Klärung : Was ist ein md File? Wie wird eine Tabelle Dokumentiert? | |||
* Javadoc Kommentare hinzuf�gen, Dokumentation generieren und anschauen | |||
* Test Durchführen und logfile erzeugen | |||
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<pre>public class <span class="typeNameLabel">gpio_java</span> | |||
extends java.lang.Object</pre> | |||
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<td class="colFirst"><code>static java.lang.String[]</code></td> | |||
<td class="colLast"><code><span class="memberNameLink"><a href="gpio_java.html#action">action</a></span></code> | |||
<div class="block">Array with all allowed actions.</div> | |||
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<td class="colFirst"><code>static java.lang.String[][]</code></td> | |||
<td class="colLast"><code><span class="memberNameLink"><a href="gpio_java.html#rel_map">rel_map</a></span></code> | |||
<div class="block">Mapping from generic relay name to particular gpio port.</div> | |||
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<td class="colFirst"><code>static void</code></td> | |||
<td class="colLast"><code><span class="memberNameLink"><a href="gpio_java.html#checkargs-java.lang.String:A-">checkargs</a></span>(java.lang.String[] argumens)</code> | |||
<div class="block">The checkargs method checks whether two correct arguments have been entered.</div> | |||
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<td class="colFirst"><code>static void</code></td> | |||
<td class="colLast"><code><span class="memberNameLink"><a href="gpio_java.html#gpio_cmdhandler-java.lang.String-java.lang.String-">gpio_cmdhandler</a></span>(java.lang.String port, | |||
java.lang.String cmd)</code> | |||
<div class="block">The gpio_cmdhandler method switches the relays on, off or returns the status.</div> | |||
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<td class="colFirst"><code>static int</code></td> | |||
<td class="colLast"><code><span class="memberNameLink"><a href="gpio_java.html#gpio_getport-java.lang.String-">gpio_getport</a></span>(java.lang.String port)</code> | |||
<div class="block">The gpio_getport method searches in the rel_map variable for the correct port and return index.</div> | |||
</td> | |||
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<td class="colFirst"><code>static void</code></td> | |||
<td class="colLast"><code><span class="memberNameLink"><a href="gpio_java.html#gpio_read_status-java.lang.String-">gpio_read_status</a></span>(java.lang.String port)</code> | |||
<div class="block">The method checks the status and displays it in the command line.</div> | |||
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<td class="colFirst"><code>static void</code></td> | |||
<td class="colLast"><code><span class="memberNameLink"><a href="gpio_java.html#init_gpio--">init_gpio</a></span>()</code> | |||
<div class="block">The init_gpio method defines all relevant GPIO ports as output.</div> | |||
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<td class="colFirst"><code>static java.lang.String</code></td> | |||
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<div class="block">The launchcmd method runs the command.</div> | |||
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<td class="colFirst"><code>static void</code></td> | |||
<td class="colLast"><code><span class="memberNameLink"><a href="gpio_java.html#main-java.lang.String:A-">main</a></span>(java.lang.String[] args)</code> | |||
<div class="block">Implement the main function of the application gpio_java.</div> | |||
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<pre>public static java.lang.String[][] rel_map</pre> | |||
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<dt><span class="paramLabel">Parameters:</span></dt> | |||
<dd><code>args</code> - The passing argument in the commandline.</dd> | |||
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<pre>public static int gpio_getport(java.lang.String port)</pre> | |||
<div class="block">The gpio_getport method searches in the rel_map variable for the correct port and return index.</div> | |||
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<dt><span class="paramLabel">Parameters:</span></dt> | |||
<dd><code>port</code> - relay(rel1-rel8)</dd> | |||
<dt><span class="returnLabel">Returns:</span></dt> | |||
<dd>idx returns an index. The index allows access to the array rel_map. If an error occurs in the function, the value -1 is returned.</dd> | |||
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<pre>public static void gpio_cmdhandler(java.lang.String port, | |||
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<div class="block">The gpio_cmdhandler method switches the relays on, off or returns the status.</div> | |||
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<dd><code>port</code> - relay(rel1-rel8)</dd> | |||
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<pre>public static void gpio_read_status(java.lang.String port)</pre> | |||
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<dt><span class="paramLabel">Parameters:</span></dt> | |||
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<dl> | |||
<dt><span class="paramLabel">Parameters:</span></dt> | |||
<dd><code>cmd</code> - a specified system command.</dd> | |||
<dt><span class="returnLabel">Returns:</span></dt> | |||
<dd>retvalue returns a string</dd> | |||
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<h2 class="title">A</h2> | |||
<dl> | |||
<dt><span class="memberNameLink"><a href="gpio_java.html#action">action</a></span> - Static variable in class <a href="gpio_java.html" title="class in <Unnamed>">gpio_java</a></dt> | |||
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<dt><span class="memberNameLink"><a href="gpio_java.html#checkargs-java.lang.String:A-">checkargs(String[])</a></span> - Static method in class <a href="gpio_java.html" title="class in <Unnamed>">gpio_java</a></dt> | |||
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<dd> | |||
<div class="block">The gpio_cmdhandler method switches the relays on, off or returns the status.</div> | |||
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<dd> | |||
<div class="block">The gpio_getport method searches in the rel_map variable for the correct port and return index.</div> | |||
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<dd> </dd> | |||
<dt><span class="memberNameLink"><a href="gpio_java.html#gpio_read_status-java.lang.String-">gpio_read_status(String)</a></span> - Static method in class <a href="gpio_java.html" title="class in <Unnamed>">gpio_java</a></dt> | |||
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<dt><span class="memberNameLink"><a href="gpio_java.html#init_gpio--">init_gpio()</a></span> - Static method in class <a href="gpio_java.html" title="class in <Unnamed>">gpio_java</a></dt> | |||
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<dd> | |||
<div class="block">Implement the main function of the application gpio_java.</div> | |||
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<dt><span class="memberNameLink"><a href="gpio_java.html#rel_map">rel_map</a></span> - Static variable in class <a href="gpio_java.html" title="class in <Unnamed>">gpio_java</a></dt> | |||
<dd> | |||
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<dt><span class="memberNameLink"><a href="gpio_java.html#show_usage--">show_usage()</a></span> - Static method in class <a href="gpio_java.html" title="class in <Unnamed>">gpio_java</a></dt> | |||
<dd> | |||
<div class="block">The show_usage method provides assistance in case of wrong input.</div> | |||
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<h1 class="title">Hierarchy For Package <Unnamed></h1> | |||
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<h2 title="Class Hierarchy">Class Hierarchy</h2> | |||
<ul> | |||
<li type="circle">java.lang.Object | |||
<ul> | |||
<li type="circle"><a href="gpio_java.html" title="class in <Unnamed>"><span class="typeNameLink">gpio_java</span></a></li> | |||
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font-family:'DejaVu Serif', Georgia, "Times New Roman", Times, serif; | |||
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td.colLast div { | |||
padding-top:0px; | |||
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td.colLast a { | |||
padding-bottom:3px; | |||
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/* | |||
Formatting effect styles | |||
*/ | |||
.sourceLineNo { | |||
color:green; | |||
padding:0 30px 0 0; | |||
} | |||
h1.hidden { | |||
visibility:hidden; | |||
overflow:hidden; | |||
font-size:10px; | |||
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display:block; | |||
margin:3px 10px 2px 0px; | |||
color:#474747; | |||
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.deprecatedLabel, .descfrmTypeLabel, .memberNameLabel, .memberNameLink, | |||
.overrideSpecifyLabel, .packageHierarchyLabel, .paramLabel, .returnLabel, | |||
.seeLabel, .simpleTagLabel, .throwsLabel, .typeNameLabel, .typeNameLink { | |||
font-weight:bold; | |||
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font-style:italic; | |||
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div.block div.block span.deprecationComment, div.block div.block span.emphasizedPhrase, | |||
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@@ -0,0 +1,243 @@ | |||
/** | |||
* @author Alex Volkmann | |||
* @date 18.02.2019 | |||
* @function Das programm steuert ein relle an und macht es an oder aus | |||
*/ | |||
import java.io.BufferedReader; | |||
import java.io.IOException; | |||
import java.io.InputStreamReader; | |||
import java.util.Arrays; | |||
public class gpio_java | |||
{ | |||
/** Mapping from generic relay name to particular gpio port. */ | |||
public static String rel_map [][] = { | |||
{"rel1","14"}, | |||
{"rel2","15"}, | |||
{"rel3","18"}, | |||
{"rel4","23"}, | |||
{"rel5","24"}, | |||
{"rel6","25"}, | |||
{"rel7","8"}, | |||
{"rel8","7"} | |||
}; | |||
/** Array with all allowed actions.*/ | |||
public static String [] action = {"on", "off", "status"}; | |||
/** Implement the main function of the application gpio_java. | |||
* @param args The passing argument in the commandline. | |||
*/ | |||
public static void main (String [] args) | |||
{ | |||
// To check the number of arguments | |||
checkargs(args); | |||
// Sets all ports to outputs | |||
init_gpio(); | |||
// Sets Gpio (according to the parameters) | |||
gpio_getport(args[0]); | |||
// Turns Gpio on, off or returns status (according to the parameters) | |||
gpio_cmdhandler(args[0], args[1]); | |||
return; | |||
} | |||
/** The checkargs method checks whether two correct arguments have been entered. | |||
* If not, an error message appears. | |||
* @param argumens Commandline argument | |||
*/ | |||
public static void checkargs(String[] argumens) | |||
{ | |||
int laenge = argumens.length; | |||
String [] h = {"-h"}; | |||
int idx; | |||
//Checks if two arguments were given. | |||
if (laenge == 2) | |||
{ | |||
//Checks if the first argument is correct. | |||
for (idx = 0; idx<8 ; idx++) | |||
{ | |||
if (argumens[0].equals(rel_map[idx][0])) | |||
{ | |||
break; | |||
} | |||
} | |||
//Checks if the second argument is correct. | |||
for (idx = 0; idx<3 ; idx++) | |||
{ | |||
if (argumens[1].equals(action[idx])) | |||
{ | |||
break; | |||
} | |||
} | |||
} | |||
//If there are not two correct arguments then it is tested whether there is an h in it. | |||
//If so, the show_usage function executes. | |||
else if (Arrays.equals (argumens, h) == true) | |||
{ | |||
show_usage(); | |||
System.exit(0); | |||
} | |||
//If it is a wrong input, an error message will be displayed. | |||
else | |||
{ | |||
System.out.println("Error. If you need help, type the command -h"); | |||
System.exit(0); | |||
} | |||
} | |||
/** The init_gpio method defines all relevant GPIO ports as output.*/ | |||
public static void init_gpio() | |||
{ | |||
int idx; | |||
String port; | |||
String cmd; | |||
for(idx = 0; idx<8 ; idx++) | |||
{ | |||
port = rel_map[idx][1]; | |||
cmd = "/usr/bin/gpio -g mode " + port + " out"; | |||
launchcmd(cmd); | |||
} | |||
return; | |||
} | |||
/** The gpio_getport method searches in the rel_map variable for the correct port and return index. | |||
* @param port relay(rel1-rel8) | |||
* @return idx returns an index. The index allows access to the array rel_map. If an error occurs in the function, the value -1 is returned. | |||
* */ | |||
public static int gpio_getport(String port) | |||
{ | |||
int idx; | |||
for(idx = 0; idx<8 ; idx++) | |||
{ | |||
if(port.equals(rel_map[idx][0])) | |||
{ | |||
return idx; | |||
} | |||
} | |||
return -1; | |||
} | |||
/** The gpio_cmdhandler method switches the relays on, off or returns the status. | |||
* @param port relay(rel1-rel8) | |||
* @param cmd action (on/off/status) | |||
* */ | |||
public static void gpio_cmdhandler(String port, String cmd) | |||
{ | |||
int idx_port; | |||
idx_port = gpio_getport(port); | |||
if (cmd.equals(action [0])) | |||
{ | |||
//Turn on | |||
cmd = "/usr/bin/gpio -g write " + rel_map[idx_port][1] + " 1"; | |||
launchcmd(cmd); | |||
} | |||
else if (cmd.equals(action [1])) | |||
{ | |||
//Turn off | |||
cmd = "/usr/bin/gpio -g write " + rel_map[idx_port][1] + " 0"; | |||
launchcmd(cmd); | |||
} | |||
else | |||
{ | |||
//Show status | |||
gpio_read_status(port); | |||
} | |||
return; | |||
} | |||
/** The method checks the status and displays it in the command line. | |||
* @param port the relay board*/ | |||
public static void gpio_read_status(String port) | |||
{ | |||
int idx_port; | |||
idx_port = gpio_getport(port); | |||
String cmd = "/usr/bin/gpio -g read " + rel_map[idx_port][1]; | |||
String response; | |||
response = launchcmd(cmd); | |||
if(response.equals("1")) | |||
{ | |||
System.out.println("on"); | |||
} | |||
else | |||
{ | |||
System.out.println("off"); | |||
} | |||
return; | |||
} | |||
/** The show_usage method provides assistance in case of wrong input.*/ | |||
public static void show_usage() | |||
{ | |||
System.out.println("gpio_java allows you to control an 8 port relay board."); | |||
System.out.println("Usage: java gpio_java port action"); | |||
System.out.println("port: the port indicates which relay is controlled(rel1, rel2, rel3, ..., rel8)."); | |||
System.out.println("action: the action indicates which operation will be performed (on = switch relay on,off = switch relay off or status = relay request status)."); | |||
System.out.println(""); | |||
System.out.println("Example : switch first relais on."); | |||
System.out.println("java gpio_java rel1 on"); | |||
System.out.println(""); | |||
System.out.println("Example : switch first relais off."); | |||
System.out.println("java gpio_java rel1 off"); | |||
System.out.println(""); | |||
System.out.println("Example : read status from first relais."); | |||
System.out.println("java gpio_java rel1 status"); | |||
} | |||
/** The launchcmd method runs the command. | |||
* @param cmd a specified system command. | |||
* @return retvalue returns a string | |||
* */ | |||
public static String launchcmd(String cmd) | |||
{ | |||
// If simulation is True it can run on PC | |||
// if the simulation is false on the Raspberry PI | |||
boolean simulation = false; | |||
String line = null; | |||
String retValue = ""; | |||
if(simulation==true){ | |||
System.out.println(cmd); | |||
} | |||
else { | |||
try{ | |||
Process p = Runtime.getRuntime().exec(cmd); | |||
BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream())); | |||
while ((line = in.readLine()) != null) { | |||
retValue += line; | |||
} | |||
} | |||
catch(IOException e) | |||
{ | |||
System.out.println("process error IOException"); | |||
} | |||
} | |||
return retValue; | |||
} | |||
} |
@@ -1,60 +0,0 @@ | |||
package pdu_jctrl; | |||
import java.io.IOException; | |||
import java.util.concurrent.TimeUnit; | |||
public class gpio_java | |||
{ | |||
public static void main (String [] args) | |||
{ | |||
System.out.println("Hello World"); | |||
setgpio(true); | |||
try { | |||
TimeUnit.SECONDS.sleep(1); | |||
} | |||
catch(InterruptedException e) | |||
{ | |||
System.out.println("sleep error InterruptedException ocure"); | |||
} | |||
setgpio(false); | |||
} | |||
public static void launchcmd(String cmd) | |||
{ | |||
// Wenn Simulation True ist kann sie auf dem PC ausfuehren | |||
// wenn die Simulation false is auf dem Raspberry PI | |||
boolean simulation = true; | |||
if(simulation==true){ | |||
System.out.println(cmd); | |||
} | |||
else { | |||
try{ | |||
Runtime.getRuntime().exec(cmd); | |||
} | |||
catch(IOException e) | |||
{ | |||
System.out.println("process error IOException"); | |||
} | |||
} | |||
} | |||
public static void setgpio(boolean status) | |||
{ | |||
launchcmd("/usr/bin/gpio -g mode 14 out"); | |||
if(status == true) | |||
{ | |||
launchcmd("/usr/bin/gpio -g write 14 1"); | |||
} | |||
else | |||
{ | |||
launchcmd("/usr/bin/gpio -g write 14 0"); | |||
} | |||
} | |||
} |