102 lines
2.1 KiB
PHP
Executable File
102 lines
2.1 KiB
PHP
Executable File
#!/usr/bin/php
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<?php
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require_once __DIR__.'/../../include/php/const';
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function chip_state($p_id_chip, $p_state){
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$g_pins = null;
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$g_state = null;
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/* [1] Cache chips
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=========================================================*/
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/* (1) Get file handler */
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$f_chips = new SplFileObject(CHIPS_CONF, 'r');
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/* (2) Parse line by line */
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while( !$f_chips->eof() ){
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// {1} Try to parse current line //
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$parsed = json_decode($f_chips->fgets(), true);
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// {2} If cannot parse, go to next //
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if( is_null($parsed) )
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continue;
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// {3} Check if choosen pin //
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if( $parsed[0] == $p_id_chip ){
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// store pin list
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$g_pins = $parsed[1];
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/* (3) Check if choosen state */
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foreach($parsed[2] as $state=>$pinValues){
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if( "$state" === "$p_state" ){
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// store state values
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$g_state = $pinValues;
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break;
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}
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}
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break;
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}
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}
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/* (3) If chip not found -> abort */
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if( is_null($g_pins) || is_null($g_state) )
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return 127;
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/* [2] Set chip to choosen state
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=========================================================*/
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/* (1) Activate pin + set OUT mode */
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foreach($g_pins as $pinNumber)
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// if failed -> propagate error
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if( syscall(SOURCE_DIR."/gpio/out {$pinNumber}") == false )
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return 127;
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/* (2) For each pin, set the associated value */
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foreach($g_state as $pinIndex=>$pinValue){
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// {1} set value to LOW if 0 //
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if( $pinValue == 0 )
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if( syscall(SOURCE_DIR."/gpio/low ".$g_pins[$pinIndex]) == false )
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return 127;
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// {2} set value to HIGH if not 0 //
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else
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if( syscall(SOURCE_DIR."/gpio/high ".$g_pins[$pinIndex]) == false )
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return 127;
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}
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return 0;
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}
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/* [1] Check argument (chip position, chip state)
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=========================================================*/
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if( $argc < 3 || !preg_match('@^\d+$@', $argv[1]) || !preg_match('@^[A-Za-z0-9]{1}$@', $argv[2]) ){
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echo 127;
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die(127);
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}
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/* [2] Launch main script
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=========================================================*/
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$exec = chip_state($argv[1], $argv[2]);
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echo $exec;
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die($exec);
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?>
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