Controlling Street Lights

[roy]

[Subject]

This project is an implementation of controlling 16 street lights by a PHPoC board with 4 relay output boards(pes-2401).
Note that maximum 14 smart expansion boards are available on one PHPoC board.

This project is designed based on the project "an implementation of the Internet switch by connecting a 4-port relay output."
* https://forum.phpoc.com/blogs/roy/33...rt-di-do-board


[video]

[Description - Input Part]

The PHPoC board monitors the swtich input through the 4 port digital input port (PES-2402), and when the switch is pressed, it passes the state to the opposite PHPoC board via TCP/IP.



[Description - Output Part]

The PHPoC board which receives the status turns on / off the lights using the connected four 4-port relay output board (PES-2401) in 4 steps.
The 4 steps are as follows:
- step 1: turn all lights on
- step 2: turn half of them off
- step 3: invert the result of step 2
- step 4: turn all lights off



[Components - Input Part]

1. PHPoC Blue(P4S-342) x 1


2. 4-Port Digital Input Board (PES-2402) x 1


3. PHPoC Bread Board (PES-020-002) 1


4. Push Buttons x 1 and Jumper Wires


[Components - Output Part]

1. PHPoC Blue(P4S-342) x 1

2. 4-Port Relay Output Board (PES-2401) x 4


3. street lights x 16


[Connection - Input Part]



[Connection - Output Part]



[Souce Code - Input Part]

<?php

include_once "/lib/sd_spc.php";
include_once "/lib/sn_tcp_ac.php";

spc_reset();
spc_sync_baud(115200);

$sid = 1;
$pin_id = 0;
$last_in = 0;
$in = 0;
$server_addr = "10.6.0.241";
$server_port = 5020;
$control_int = 0;

function read_in($sid, $pin)
{

    $response = spc_request($sid, 4, "get $pin input");

    $response_code = substr($response, 0, 3);
    if($response_code != "200")
        return -1;

    $response_data = substr($response, 4, 1);
    if($response_data == "1")
        return 1;
    elseif($response_data == "0")
        return 0;
    else
        return -1;
}

spc_request($sid, 4, "set 0 delay 100");

sleep(2);

echo "connecting...";

tcp_client(0, $server_addr, $server_port);
while(tcp_state(0) != TCP_CONNECTED)
    ;

echo "connected!\r\n";

while(1)
{
    //$control = "";
    $event = false;

    if(($in = read_in($sid, $pin_id)) != $last_in)
    {
        $last_in = $in;
        if($in != 0)
            $event = true;
    }

    if($event)
    {
        $control_int++;
        if($control_int > 3)
            $control_int -= 4;

        $control = (string)$control_int;
        echo $control, "\r\n";
        tcp_write(0, $control);
    }
}

?>
[/code]


[Souce Code - Output Part]

[code=php]
<?php

include_once "/lib/sd_spc.php";
include_once "/lib/sn_tcp_ac.php";
include_once "/lib/sd_340.php";

define("TURN_OFF",    0x0000);
define("TURN_ON",     0xffff);
define("TURN_HALF_A", 0x5555);
define("TURN_HALF_B", 0xaaaa);

//define("MODE_MANUAL",     0x00);
//define("MODE_TIME",       0x00);
//define("MODE_BRIGHTNESS", 0x00);

spc_reset();
spc_sync_baud(115200);

$sid = 1;
$pin_id = 0;
$local_port = 5020;
$control = 0;

function get_out($sid, $pin)
{
    $response = spc_request($sid, 4, "get $pin output");

    $response_code = substr($response, 0, 3);
    if($response_code != "200")
        return -1;

    $response_data = substr($response, 4, 1);
    if($response_data == "1")
        return 1;
    elseif($response_data == "0")
        return 0;
    else
        return -1;
}

function set_out($sid, $pin, $sig)
{
    if($sig == 1)
        $level = "high";
    elseif($sig == 0)
        $level = "low";
    else
        exit("undefined state \r\n");
    spc_request($sid, 4, "set $pin output $level");
}

sleep(2);

echo "listen...";

tcp_server(0, $local_port);
while(tcp_state(0) != TCP_CONNECTED)
    ;

echo "connected\r\n";

while(1)
{
    $rbuf = "";
    if(tcp_read(0, $rbuf) > 0)
    {
        $control = (int)$rbuf;
        echo "control changed to $rbuf ($control) \r\n";
        switch($control)
        {
            case 0:
                $output = TURN_OFF;
                break;
            case 1:
                $output = TURN_ON;
                break;
            case 2:
                $output = TURN_HALF_A;
                break;
            case 3:
                $output = TURN_HALF_B;
                break;
            default:
                echo "out of range\r\n";
        }

        for($i = 0; $i < 16; $i++)
        {
            $sid = ($i / 4) + 1;
            $pin = $i % 4;
            $sig = ($output>> $i) & 1;
            set_out($sid, $pin, $sig);
            //usleep(10000);
        }
    }
    else
        ;
    usleep(10000);
}

?>