how use p8_45

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I all,
i’m newbee in beaglebone black
i try this code

var http = require(‘http’);
var url = require(‘url’);
var querystring = require(‘querystring’);
var b = require(‘bonescript’);
var pin= ‘P8_45’;
var server = http.createServer(function(req, res) {
var params = querystring.parse(url.parse(req.url).query);

if(‘nb_out’ in params && ‘etat’ in params){
b.pinMode(pin, b.OUTPUT);
if(params[‘etat’] == ‘off’){
res.write(‘

OUT VCC

’);
b.digitalWrite(pin, b.HIGH);
}
if(params[‘etat’] == ‘on’){
res.write(‘

OUT 0V

’);
b.digitalWrite(pin, b.LOW);
}
res.write(‘retour choix sortie’);
}
else{
res.write(‘LED ON
’+
’LED OFF’);
};
res.end();
});
server.listen(8888);

I have this error

/usr/local/lib/node_modules/bonescript/my.js:57
if(slot[0]) {
^
TypeError: Cannot read property ‘0’ of null
at Object.exports.load_dt (/usr/local/lib/node_modules/bonescript/my.js:57:20)
at Object.exports.create_dt (/usr/local/lib/node_modules/bonescript/my.js:123:33)
at Object.exports.setPinMode (/usr/local/lib/node_modules/bonescript/hw_capemgr.js:83:12)
at Object.f.pinMode (/usr/local/lib/node_modules/bonescript/index.js:160:15)
at Server. (/var/www/13:10:7)
at Server.EventEmitter.emit (events.js:98:17)
at HTTPParser.parser.onIncoming (http.js:2108:12)
at HTTPParser.parserOnHeadersComplete [as onHeadersComplete] (http.js:121:23)
at Socket.socket.ondata (http.js:1966:22)
at TCP.onread (net.js:525:27)

if I use P8_13 a same with exemple , this code is ok

What i must do for use the p8_45 (gpio2_26)?

thinks for reply :slight_smile: