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Hector Martin marcan

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@marcan
marcan / stress_monitor.py
Created December 10, 2020 10:52
#!/usr/bin/env python3
import time, math, threading, struct, sys, os.path, random
import obswebsocket, obswebsocket.requests
client = obswebsocket.obsws("localhost", 4444)
client.connect()
source_patterns = [
"RTMP", "JACK", "AUX"
]
@marcan
marcan / grandpianist_convert.py
Created May 30, 2020 11:28
#!/usr/bin/python3
import mido, sys
mid = mido.MidiFile(sys.argv[1])
new_track = mido.MidiTrack()
sustain = 0
last = 0
t = 0
for ev in mido.merge_tracks(mid.tracks):
@marcan
marcan / starlet_memory_map.txt
Last active February 21, 2021 21:52
Starlet memory map
00000000-04000000: MEM1 area (2 mirrors, 0x2000000 each)
0000000-1800000: MEM1 (0x1800000)
1800000-2000000: unimplemented / bus noise / junk? (looks like uninitialized memory but unwritable)
04000000-08000000: unimplemented, read as zeroes
08000000-10000000: register/SRAM area (8 mirrors, 0x800000 each)
000000-400000: registers (4 mirrors, 0x100000 each) CANONICAL ADDRESSES: 0x0d000000 and 0x0d800000
@marcan
marcan / glibc-2.29-reiwa.patch
Created April 1, 2019 08:44
glibc-2.29 patch to add the Reiwa (令和) era
--- glibc-2.29/localedata/locales/ja_JP.old 2019-04-01 17:26:52.808154026 +0900
+++ glibc-2.29/localedata/locales/ja_JP 2019-04-01 17:38:48.872822551 +0900
@@ -14946,7 +14946,9 @@
t_fmt_ampm "%p%I<U6642>%M<U5206>%S<U79D2>"
-era "+:2:1990//01//01:+*:<U5E73><U6210>:%EC%Ey<U5E74>";/
+era "+:2:2020//01//01:+*:<U4EE4><U548C>:%EC%Ey<U5E74>";/
+ "+:1:2019//05//01:2019//12//31:<U4EE4><U548C>:%EC<U5143><U5E74>";/
+ "+:2:1990//01//01:2019//04//30:<U5E73><U6210>:%EC%Ey<U5E74>";/
@marcan
marcan / rpi_cam_auth.py
Created January 25, 2019 07:48
Raspberry Pi Camera V2 DRM authentication example
import hmac, hashlib
# Data from I²C trace at https://hackaday.io/project/19480-raspberry-pi-camera-v21-reversed/log/52547-i2c-logic-analyzer-trace
# Secret key from VideoCore blob
# serial[8], serial[7:4], serial[3:0]
serial = bytes.fromhex("EE8C196D8301230B59")
# rPi -> camera random number
numIn = bytes.fromhex("5805F3C898C3133154498E082F2E703516F2DBD1")
@marcan
marcan / vortex_patch.py
Created December 22, 2018 10:09
Alesis Vortex Wireless 2 patch to send MIDI messages when pressing the ribbon bank buttons
from asm import *
blob = open("image.bin", "rb").read()
start_addr = 0x08003000
patch_start = start_addr + len(blob)
assert patch_start % 4 == 0
@marcan
marcan / asm.py
Created December 22, 2018 10:07
Python module to assemble snippets of code
#!/usr/bin/env python
import os, tempfile, shutil, subprocess
class AsmException(Exception):
pass
class BaseAsm(object):
def __init__(self, source, addr = 0):
self.source = source
self._tmp = tempfile.mkdtemp() + os.sep
@marcan
marcan / canon-ef-protocol-notes.md
Last active April 10, 2024 14:18
Canon EF protocol notes

Testing done using a Canon EOS 600D and a Canon EF-S18-55mm f/3.5-5.6 IS II.

Pinout

  1. VBAT
  2. DET (common with P-GND on lens side)
  3. P-GND
  4. VDD
  5. DCL
  6. DLC
@marcan
marcan / xt256img.py
Last active September 28, 2022 19:11
Image to xterm-256 Unicode block art converter
#!/usr/bin/env python3
from __future__ import print_function
import sys, argparse, codecs
from PIL import Image, ImagePalette
xterm256colors = [ # http://pln.jonas.me/xterm-colors
0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, 0x80, 0x80, 0x00,
0x00, 0x00, 0x80, 0x80, 0x00, 0x80, 0x00, 0x80, 0x80, 0xc0, 0xc0, 0xc0,
0x80, 0x80, 0x80, 0xff, 0x00, 0x00, 0x00, 0xff, 0x00, 0xff, 0xff, 0x00,
0x00, 0x00, 0xff, 0xff, 0x00, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff,
@marcan
marcan / ghettohci.c
Created April 24, 2018 16:48
GhettOHCI - perhaps the world's smallest and stupidest OHCI stack.
/*
mini - a Free Software replacement for the Nintendo/BroadOn IOS.
ghettohci - debug over FT232 over OHCI
Copyright (C) 2012 Hector Martin "marcan" <marcan@marcansoft.com>
# This code is licensed to you under the terms of the GNU GPL, version 2;
# see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
*/