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@PaulFurtado
PaulFurtado / usb_reset.py
Last active June 22, 2024 22:44
Reset USB device from python
"""
Example code for resetting the USB port that a Teensy microcontroller is
attached to. There are a lot of situations where a Teensy or Arduino can
end up in a bad state and need resetting, this code is useful for
"""
import os
import fcntl
import subprocess
@Earnestly
Earnestly / c99_ub_list.rst
Last active May 1, 2025 14:29
C99 List of Undefined Behavior (193 Cases)

C99 List of Undefined Behavior

From N1256: (See http://port70.net/~nsz/c/c99/n1256.html#J.2)

  • A "shall" or "shall not" requirement that appears outside of a constraint is violated (clause 4).
  • A nonempty source file does not end in a new-line character which is not immediately preceded by a backslash character or ends in a partial preprocessing token or comment (5.1.1.2).
  • Token concatenation produces a character sequence matching the syntax of a universal character name (5.1.1.2).
  • A program in a hosted environment does not define a function named main using one of the specified forms (5.1.2.2.1).
  • A character not in the basic source character set is encountered in a source file, except in an identifier, a character constant, a string literal, a header name, a comment, or a preprocessing token that is never converted to a token (5.2.1).
  • An identifier, comment, string literal, character constant, or header name contains an invalid multibyte character or does not
@offlinemark
offlinemark / my_readline.c
Last active August 29, 2017 18:57
fun C exercise, tried to focus on robustness
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <err.h>
#include <time.h>
#include <stdlib.h>
int my_readline(const int fd, char *const buf, const size_t count);
void my_print_lines(int fd, char *linebuf, size_t count);
@cassus
cassus / Dev platform settings
Created November 1, 2016 14:54
Zapier app to read Activity and Sleep data from FitBit
## Triggers (Bringing data into Zapier)
### Sleep - polling
https://api.fitbit.com/1/user/-/sleep/date/today.json
### Activity - polling
https://api.fitbit.com/1/user/-/activities/list.json?beforeDate=today&sort=desc&limit=10&offset=0
## Scripting API
see script.js