mungewell

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

Hacking the Rectangular Starlink Dishy Cable

These are are some notes I put together on butchering the rectangular dishy cable.

FOLLOW THESE GUIDELINES AT YOUR OWN RISK. I TAKE NO RESPONSIBILITY FOR ANY DAMAGE OR INJURY YOU SUSTAIN FROM FOLLOWING OR NOT FOLLOWING THESE GUIDELINES.

	#!/usr/bin/env python
	'''Read fully linked TI COFF file, and generate AIS format file

	Commandline parameters
	enable sequential read,
	pll and emifb configuration
	pinmux configuration
	enable checksums

	'Eliot Blennerhassett' <[email protected]>

	#!/usr/bin/env python

	import random
	import struct
	import sys

	# Most of the Fat32 class was cribbed from https://gist.github.com/jonte/4577833

	def ppNum(num):
	return "%s (%s)" % (hex(num), num)


	# This file contains code to save 64 samples as a syx file for Novation Circuit
	#
	# * It reads a single long wave file.
	# * splits it into 64 equal chunks
	# * crops the sound
	# * adds a super fast fadein and "an appropriate fadeout". To remove clicks
	# * normalizes every sample
	# * Saves the whole thing as a syx file.
	#

	# The part .data=0x08000000 should be replaced with the correct base offset of the ROM.
	# The value 0x08000000 is valid for STM32.
	arm-none-eabi-objcopy -I binary -O elf32-little --change-section-address .data=0x08000000 input.bin output.elf