Skip to content

Instantly share code, notes, and snippets.

@gbaman
gbaman / HowToOTG.md
Last active October 3, 2025 07:37
Simple guide for setting up OTG modes on the Raspberry Pi Zero

Raspberry Pi Zero OTG Mode

Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).

The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int

@mindplay-dk
mindplay-dk / session-life-cycle.md
Last active August 26, 2024 23:46
Complete overview of the PHP SessionHandler life-cycle

This page provides a full overview of PHP's SessionHandler life-cycle - this was generated by a set of test-scripts, in order to provide an exact overview of when and what you can expect will be called in your custom SessionHandler implementation.

Each example is a separate script being run by a client with cookies enabled.

To the left, you can see the function being called in your script, and to the right, you can see the resulting calls being made to a custom session-handler registed using session_set_save_handler().

@charlie-s
charlie-s / s3_example.php
Created April 2, 2015 23:53
S3 PHP Example (without an SDK)
<?php
class S3 {
private $key = 'ABC123';
private $secret = 'lolftw';
private $region = 'us-west-2';
private $bucket = 'examplebucket';
private $host = 's3.amazonaws.com';
@douglascayers
douglascayers / ApprovalRequestComments.html
Last active September 17, 2024 23:37
Approval Request Comments in Visualforce Email Template.
<apex:component controller="ApprovalRequestCommentsController" access="global">
<apex:attribute name="relatedToId" assignTo="{!targetObjectId}" type="String" description="ID of the record whose last approval comments to retrieve"/>
<apex:outputText value="{!comments}"/>
</apex:component>
@jasny
jasny / linkify.php
Last active May 26, 2024 20:40
PHP function to turn all URLs in clickable links
<?php
/**
* Turn all URLs in clickable links.
*
* @param string $value
* @param array $protocols http/https, ftp, mail, twitter
* @param array $attributes
* @return string
*/
public function linkify($value, $protocols = array('http', 'mail'), array $attributes = array())
@nicocrm
nicocrm / gist:858086
Created March 7, 2011 04:50
SalesForce Apex CSV Parser
/**
* Used to read a delimited file.
*/
public class SSSCsvReader {
private String delim = ',';
// the input data
private String[] buffer;
public SSSCsvReader(String data){
this.buffer = data.split('\n');