EPSIAE » eneraptor

/*

 * hci_comm.h

 *

 * 2011, Aleksander Besir (alex.besir@gmail.com)

 *

 */

 #ifndef _ENERAPTOR_HCI_COMM

 #define _ENERAPTOR_HCI_COMM

 // Error codes

 #define HCI_COMM_TERMINATED_BY_LOGIC  0 // Terminated by logic

 #define HCI_COMM_ERR_NEW_SOCKET_FAIL -1 // Cannot create new socket

 #define HCI_COMM_ERR_BIND_FAIL       -2 // Cannot bind socket to port

 #define HCI_COMM_ERR_LISTEN_FAIL     -3 // Cannot listen to port

 #define HCI_COMM_ERR_ACCEPT_FAIL     -4 // Cannot accept request

 #define HCI_COMM_ERR_READ_FAIL       -5 // Cannot read request

 #define HCI_COMM_ERR_WRITE_FAIL      -6 // Cannot write response

 #define HCI_COMM_ERR_BUF_ALOC_FAIL  -99 // Cannot alocate memory for buffer

 // Program codes

 #define HCI_COMM_TERMINATE           -1 // Terminates the infinite listening loop

 // Constants

 #define HCI_COMM_REQUEST_BUFFER_SIZE  1024 // Bufer size in bytes

   // TODO: buffer size should be bigger!

 int listenTo(unsigned short int portNum);

 #endif

/*

 * hci_comm_listener.c

 *

 * 2011, Aleksander Besir (alex.besir@gmail.com)

 *

 */

#include "hci_comm.h"

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <arpa/inet.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

int listenTo(unsigned short int portNum) {

	// Buffer

	char *requestBuffer = malloc(HCI_COMM_REQUEST_BUFFER_SIZE * sizeof(char));

	if(requestBuffer == NULL) {

		fprintf(stderr,"HCI comm error: Cannot allocate buffer.\n");

		return HCI_COMM_ERR_BUF_ALOC_FAIL;

	}

	// Socket holder

	int socketHolder = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);

	if(socketHolder < 0) {

		fprintf(stderr,"HCI comm error: Cannot create a new socket.\n");

		return HCI_COMM_ERR_NEW_SOCKET_FAIL;

	}

	// Socket address holder

	struct sockaddr_in socketAddressHolder;

	memset(&socketAddressHolder, 0, sizeof(socketAddressHolder));

	socketAddressHolder.sin_family      = AF_INET;

    	socketAddressHolder.sin_port        = htons(portNum);

    	socketAddressHolder.sin_addr.s_addr = INADDR_ANY;

	// Bind socket to port

	int bindingResult = bind(socketHolder,(struct sockaddr *)&socketAddressHolder, sizeof(socketAddressHolder));

	if(bindingResult == -1) {

		fprintf(stderr,"HCI comm error: Cannot bind socket to port %d.\n",portNum);

		close(socketHolder);

		return HCI_COMM_ERR_BIND_FAIL;

	}

	// Listen to port

	int listenResult = listen(socketHolder, 10);

	if(listenResult == -1) {

		fprintf(stderr,"HCI comm error: Cannot listen to port %d.\n",portNum);

		close(socketHolder);

		return HCI_COMM_ERR_LISTEN_FAIL;

	}

	// Infinite listening

	while(1) {

		// Accept request

		int connectionHolder = accept(socketHolder,NULL,NULL);

		if(connectionHolder < 0) {

			fprintf(stderr,"HCI comm error: Error accepting request.\n");

			close(socketHolder);

			return HCI_COMM_ERR_ACCEPT_FAIL;

		}

		// Read request

		int readResult = read(connectionHolder,requestBuffer,HCI_COMM_REQUEST_BUFFER_SIZE);

		if(readResult < 0) {

			fprintf(stderr,"HCI comm error: Error reading request.\n");

			close(socketHolder);

			return HCI_COMM_ERR_READ_FAIL;

		}

		// Create a response

		char *hciResponse = "Works!"; // TODO

		int responseLength = 6; // TODO

		// Check if logic wants to terminate the infinite loop

		if(responseLength == HCI_COMM_TERMINATE) {

			break;

		}

		// Send response

		int writeResult = write(connectionHolder,hciResponse,responseLength);

		if(writeResult < 0) {

			fprintf(stderr,"HCI comm error: Error writting response.\n");

			close(socketHolder);

			return HCI_COMM_ERR_WRITE_FAIL;

		}

	}

	// Terminate

	close(socketHolder);

	free(requestBuffer);

	requestBuffer = NULL;

	return HCI_COMM_TERMINATED_BY_LOGIC;

}

/*

 * main.c

 *

 * 2011, Aleksander Besir (alex.besir@gmail.com)

 *

 */

#include "../hci_comm/hci_comm.h"

#include <stdio.h>

#include <pthread.h>

// Inter-thread shared variables

// TODO: These variables could be configuration variables

//       (eg: static boolean loggingEnabled)

// Crtitical section mutual exclusion security

static pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER;

void *decisionMakingThread_routine(void *dummy);

void *hciConnectionThread_routine(void *dummy);

// Application entry point

int main(int argc, char *argv[]) {

    printf("Hello world!\n");

    setDeviceList();

	pthread_t hciConnectionThread;

	pthread_t decisionMakingThread;

	pthread_create(&hciConnectionThread,NULL,hciConnectionThread_routine,NULL);

	pthread_create(&decisionMakingThread,NULL,decisionMakingThread_routine,NULL);

	pthread_join(hciConnectionThread,NULL);

	pthread_join(decisionMakingThread,NULL);

	exit(0);

}

// Decision-making thread routine

// Should just call a function that implements decision making module of the logic

void *decisionMakingThread_routine(void *dummy) {

	// TODO: Implemet decision making

	pthread_exit(0);

}

// HCI connection thread routine

// Start listening to some port

void *hciConnectionThread_routine(void *dummy) {

	int hciErrorCode = listenTo(1100);

	pthread_exit(0);

}

<init_config>

    <!--device containers-->

    <devices>

        <device id="Thermometer_01">

            <value>24</value>

        </device>

    </devices>

</init_config>

#include "devicelist.h"

#include <string.h>

#include <mxml.h>

device *hDevice; //device list

void setDeviceList()

{

    device *curr, *head;

    head = NULL;

    FILE *fp;

    mxml_node_t *tree, *node;

	fp = fopen("devicetree.xml", "r"); //TODO !hardcoded

	tree = mxmlLoadFile(NULL, fp, MXML_IGNORE_CALLBACK);

	node = tree;

	fclose(fp);

    /* //structure of XML tree

    ?xml

      |

    devicetree

      |

    dev1 - dev2 - ...

      |      |

      |      |

      |     ID - name - minvalue - maxvalue - action - param

    ID - name - minvalue - maxvalue - action - param

    /**/

    //getting to the correct level of the xml tree (descend 2 levels)

    node=node->child->child;

    printf("hDevice %d\n", hDevice);

    // fill the list of known devices

    // sorry for the ugly chunk of code, but I had to allocate memory

    // for each string separately in order to keep it scalable

    while(node!=NULL)

    {

        curr = (device *)malloc(sizeof(device));

        curr->id = (char *)malloc(sizeof(node->value.element.attrs->value));

        strcpy(curr->id, node->value.element.attrs->value);

        // getting data for individual device

        mxml_node_t *mxml_deviceNode;

        mxml_deviceNode=node->child;

        //TODO malloc()

        curr->name = (char *)malloc(sizeof(mxml_deviceNode->value.element.attrs->value));

        strcpy(curr->name, mxml_deviceNode->value.element.attrs->value);

            mxml_deviceNode= mxml_deviceNode->next;

        curr->minval= atoi(mxml_deviceNode->value.element.attrs->value);

            mxml_deviceNode= mxml_deviceNode->next;

        curr->maxval= atoi(mxml_deviceNode->value.element.attrs->value);

            mxml_deviceNode= mxml_deviceNode->next;

        curr->action = (char *)malloc(sizeof(mxml_deviceNode->value.element.attrs->value));

        strcpy(curr->action, mxml_deviceNode->value.element.attrs->value);

            mxml_deviceNode= mxml_deviceNode->next;

        curr->param = (char *)malloc(sizeof(mxml_deviceNode->value.element.attrs->value));

        strcpy(curr->param, mxml_deviceNode->value.element.attrs->value);

        // done

        // moving to the next XML node

        node=node->next;

        curr->nxt = head;

        head = curr;

    }

    //delete obsolete xml tree

    mxmlDelete(tree);

    mxmlDelete(node);

    /*

    // TODO delete - test

    hDevice=head;

    curr=head;

    printf("test device list\n");

    //*

    while(curr)

    {

        printf("name:\t %s\n", curr->name );

        printf("id:\t %s\n", curr->id );

        printf("minval:\t %d\n", curr->minval );

        printf("maxval:\t %d\n", curr->maxval );

        printf("action:\t %s\n", curr->action );

        printf("param:\t %s\n", curr->param );

        curr=curr->nxt;

    }

    /**/

}

/*

void updateDeviceList(device_d *deviceList)

{

}

/**/

<?xml version="1.0"?>

<devicetree>

    <device id="thermometer_01">

        <name nam="Thermometer"></name>

        <minvalue minval="18"></minvalue>

        <maxvalue maxval="27"></maxvalue>

        <action act="testAction_1"></action>

        <param par="testParam_1"></param>

    </device>

    <device id="barometer_01">

        <name nam="Barometer"></name>

        <minvalue minval="18"></minvalue>

        <maxvalue maxval="27"></maxvalue>

        <action act="testAction_2"></action>

        <param par="testParam_2"></param>

    </device>

    <device id="hygrometer_01">

        <name nam="Hygrometer"></name>

        <minvalue minval="18"></minvalue>

        <maxvalue maxval="27"></maxvalue>

        <action act="testAction_3"></action>

        <param par="testParam_3"></param>

    </device>

    <device id="light_sensor_01">

        <name nam="Light sensor"></name>

        <minvalue minval="18"></minvalue>

        <maxvalue maxval="27"></maxvalue>

        <action act="testAction_4"></action>

        <param par="testParam_4"></param>

    </device>

    <device id="smart_meter_01">

        <name nam="Smart meter"></name>

        <minvalue minval="18"></minvalue>

        <maxvalue maxval="27"></maxvalue>

        <action act="testAction_5"></action>

        <param par="testParam_5"></param>

    </device>

</devicetree>

#ifndef DEVICELIST_H_INCLUDED

#define DEVICELIST_H_INCLUDED

//struct device_d ; /* Forward declaration */

typedef struct device_d

{

    char    *name;

    char    *id;

    int     minval;

    int     maxval;

    char    *action;

    char    *param;

    //TODO add circular buffer for each device

    struct  device_d *nxt;

}device;

void setNewDeviceList(); // ony called on startup

/*

void updateDeviceList(device_d *deviceList); // called on HMI change

char *getDeviceName();

char *getDeviceID();

?    requestDeviceUpdate(); //HMI naj nastavi parametre napravi

/**/

//check status?

#endif // DEVICELIST_H_INCLUDED

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>

<CodeBlocks_layout_file>

	<ActiveTarget name="Debug" />

	<File name="devicelist.c" open="0" top="0" tabpos="2">

		<Cursor position="2830" topLine="75" />

	</File>

	<File name="initialisation.h" open="0" top="0" tabpos="8">

		<Cursor position="0" topLine="0" />

	</File>

	<File name="main.c" open="0" top="0" tabpos="1">

		<Cursor position="73" topLine="0" />

	</File>

</CodeBlocks_layout_file>

# depslib dependency file v1.0

1294839673 source:/home/janez/Documents/Dropbox/greenIT/eneraptor/main.c

	<stdio.h>

	<stdlib.h>

1294862485 source:/home/janez/Documents/Dropbox/greenIT/eneraptor/devicelist.c

	"devicelist.h"

	<string.h>

	<mxml.h>

1294858842 /home/janez/Documents/Dropbox/greenIT/eneraptor/devicelist.h

1294862456 source:/home/janez/Documents/Dropbox/greenIT/eneraptor/src/hci_comm/hci_comm_listener.c

	"hci_comm.h"

	<sys/types.h>

	<sys/socket.h>

	<netinet/in.h>

	<arpa/inet.h>

	<stdio.h>

	<stdlib.h>

	<string.h>

	<unistd.h>

1294862391 /home/janez/Documents/Dropbox/greenIT/eneraptor/src/hci_comm/hci_comm.h

1294862485 source:/home/janez/Documents/Dropbox/greenIT/eneraptor/src/init/devicelist.c

	"devicelist.h"

	<string.h>

	<mxml.h>

1294858842 /home/janez/Documents/Dropbox/greenIT/eneraptor/src/init/devicelist.h

1294863577 source:/home/janez/Documents/Dropbox/greenIT/eneraptor/src/startup/main.c

	"../hci_comm/hci_comm.h"

	<stdio.h>

	<pthread.h>

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>

<CodeBlocks_project_file>

	<FileVersion major="1" minor="6" />

	<Project>

		<Option title="eneraptor" />

		<Option pch_mode="2" />

		<Option compiler="gcc" />

		<Build>

			<Target title="Debug">

				<Option output="bin/Debug/eneraptor" prefix_auto="1" extension_auto="1" />

				<Option object_output="obj/Debug/" />

				<Option type="1" />

				<Option compiler="gcc" />

				<Compiler>

					<Add option="-g" />

				</Compiler>

				<Linker>

					<Add option="-lmxml" />

				</Linker>

			</Target>

			<Target title="Release">

				<Option output="bin/Release/eneraptor" prefix_auto="1" extension_auto="1" />

				<Option object_output="obj/Release/" />

				<Option type="1" />

				<Option compiler="gcc" />

				<Compiler>

					<Add option="-O2" />

				</Compiler>

				<Linker>

					<Add option="-s" />

				</Linker>

			</Target>

		</Build>

		<Compiler>

			<Add option="-Wall" />

		</Compiler>

		<Linker>

			<Add option="-lmxml" />

			<Add library="pthread" />

		</Linker>

		<Unit filename="devicelist.c">

			<Option compilerVar="CC" />

		</Unit>

		<Unit filename="devicelist.h" />

		<Unit filename="initialisation.h" />

		<Unit filename="main.c">

			<Option compilerVar="CC" />

		</Unit>

		<Unit filename="src/hci_comm/hci_comm.h" />

		<Unit filename="src/hci_comm/hci_comm_listener.c">

			<Option compilerVar="CC" />

		</Unit>

		<Extensions>

			<code_completion />

			<debugger />

		</Extensions>

	</Project>

</CodeBlocks_project_file>