输出端口控制


为了控制输出端口的spc_request_dev函数呼出

spc_request_dev($sid, $cmd);

命令构造如下。

"set $port output $value"

<?php
include "/lib/sd_spc.php";
spc_reset();
spc_sync_baud();
$sid = 1;

echo "turn all output ports on\r\n";
spc_request_dev($sid, "set 0 output high");
spc_request_dev($sid, "set 1 output high");
spc_request_dev($sid, "set 2 output high");
spc_request_dev($sid, "set 3 output high");

sleep(1);

echo "turn all output ports off\r\n";
spc_request_dev($sid, "set 0 output low");
spc_request_dev($sid, "set 1 output low");
spc_request_dev($sid, "set 2 output low");
spc_request_dev($sid, "set 3 output low");
?>

输出结果

turn all output ports on
turn all output ports off