//// Code:

var b = require('bonescript');
var p = 'P8_3';

var gpiomux = b.bone.pins[p].options.slice(-1)[0];

b.pinMode(p, b.OUTPUT, 7, 'pullup', 'fast', console.log);

b.getPinMode(p, console.log);


//// Error:

root@beaglebone:/var/lib/cloud9# node test
error: Failed to find devicetree fragment: bspm_P8_3_17
info:  0: 54:PF---
 1: 55:PF---
 2: 56:PF---
 3: 57:PF---
 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
 5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
15: ff:P-O-L Override Board Name,00A0,Override Manuf,am33xx_pwm
20: ff:P-O-L Override Board Name,00A0,Override Manuf,bspm_P8_13_17
21: ff:P-O-L Override Board Name,00A0,Override Manuf,bspm_P8_11_17

info: Error loading devicetree overlay for P8_3 using template bspm
{ value: false,
  err: 'Error loading devicetree overlay for P8_3 using template bspm' }

/usr/lib/node_modules/bonescript/my.js:57
            if(slot[0]) {
                   ^
TypeError: Cannot read property '0' of null
    at Object.exports.load_dt (/usr/lib/node_modules/bonescript/my.js:57:20)
    at exports.create_dt.handler (/usr/lib/node_modules/bonescript/my.js:93:21)
    at ChildProcess.exithandler (child_process.js:538:7)
    at ChildProcess.EventEmitter.emit (events.js:99:17)
    at maybeClose (child_process.js:638:16)
    at Socket.ChildProcess.spawn.stdin (child_process.js:815:11)
    at Socket.EventEmitter.emit (events.js:96:17)
    at Socket._destroy.destroyed (net.js:358:10)
    at process.startup.processNextTick.process._tickCallback (node.js:245:9)