mofosyne

# inspired from http://nathanhoad.net/how-to-meld-for-git-diffs-in-ubuntu-hardy
# and http://gitguru.com/2009/02/22/integrating-git-with-a-visual-merge-tool/

sudo apt-get install meld

# create a python script with the below content and name it diff.py


#!/usr/bin/python

mofosyne

#!/usr/bin/env python3
# This script checks git tag written in a modified semantic version format
# and returns a C file with the parsed version code and the git hash
# The git tag MUST conform to this format v<major>.<minor>.<patch>-<rcX>

import subprocess
import sys, os
import re

tagname = subprocess.check_output(["git", "describe", "--tags"]).strip().decode("utf-8") ;

mofosyne

/***********************
  SEMIHOSTING
************************/

#define SEMIHOSTING
#ifdef SEMIHOSTING
#include <stdarg.h>
#include <ctype.h> //isprint
/*
  Note: This semihost printing utility functions is targeted towards STM32 based chips

mofosyne

// This allows you to easily monitor change to registers that you care about
#define PRINTREG(X, MSG)  printf("%15s = %08lX : %s\r\n", (char*) #X, (long unsigned) X, (char*) MSG);
#define PRINTREG_MON(X, MSG) \
    {\
      static int count = 0;\
      static long unsigned prev = 0;\
      if (!count) \
        { printf("%4d: %40s = %08lX : %s", (int) count, (char*) #X, (long unsigned) X, (char*) MSG); count++;}\
      else if (prev != X) \
        { printf("%4d: %40s = (%08lX --> %08lX) : %s", (int) count, (char*) #X, (long unsigned) prev, (long unsigned) X, (char*) MSG); count++;}\

mofosyne

#!/usr/bin/env python3

"""
  # STM32H7 SWO Output Solution
    Author: Brian Khuu 2020
    Main Copy: https://gist.github.com/mofosyne/178ad947fdff0f357eb0e03a42bcef5c

    This generates codes that enables SWO output for STM32H7 and was tested on NUCLEO-H743ZI2.
    This is required because stm32h7 changed the registers that OpenOCD expects for SWO output.
    Best to use 400Mhz, tried lower... but had issue with getting stable uart output

mofosyne

// # Circular Byte Buffer For Embedded Applications (Index Based)
// Author: Brian Khuu (July 2020) (briankhuu.com) ([email protected])
// Reason: Malloc free, minimum overhead implementation of a circular buffer.
//   Static inlined handlers for speed and ease of usage in various projects.
//   Index based implementation diverges from harshkn's version, since it is
//   easier for me to grok. However may come at cost of speed and optimisation.
//   Also uses byte based rather than item based for easier understability
//   when used for simpler byte array circular buffers.
//   I have also written an pointer based circular buffer version.
// Based on harshkn's circular buffer: https://gist.github.com/harshkn/909546

mofosyne

// # Circular Byte Buffer For Embedded Applications (Pointer Based)
// Author: Brian Khuu (July 2020) (briankhuu.com) ([email protected])
// Reason: Malloc free, minimum overhead implementation of a circular buffer.
//   Static inlined handlers for speed and ease of usage in various projects.
//   Pointer based implementation approach kept from harshkn's version
//   as it may be faster than index deferencing approach.
//   Also uses byte based rather than item based for easier understability
//   when used for simpler byte array circular buffers.
//   I have also written an index based circular buffer version.
// Based on harshkn's circular buffer: https://gist.github.com/harshkn/909546

mofosyne

/*
  Title: ECMA-48 ANSI ESC CODE (e.g. VT100)
  Author: Brian Khuu 2021
  About: Simple header files for inclusion in embedded system for serial interfaces
  Applications: Adding colors to VT100 serial terminal emulators.
  Tips: This headerfile also contains some code that you can use to test/preview all the codes

  Ref: https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit
  Ref: http://osr507doc.sco.com/man/html.HW/screen.HW.html
  Ref: SO/IEC 6429 https://www.ecma-international.org/publications-and-standards/standards/ecma-48/

mofosyne

#include <stdio.h>

void ipv4ToStrbuff(char ipStr[], const unsigned char ipaddr[])
{
  // assumes that char *ipStr = "XXX.XXX.XXX.XXX";
  const char *nibblesToDigits = "0123456789";
  int i = 0;
  for (i = 0 ; i < 4 ; i++)
  {
     const unsigned char h = ipaddr[i];

mofosyne

# Tips in cleaning up empty folders

* https://stackoverflow.com/questions/30345690/git-how-to-remove-only-empty-directoriesnot-un-tracked-files-in-a-git-repo
* https://superuser.com/questions/444474/how-to-delete-empty-folders-from-a-given-directory-in-windows-with-a-script

In Linux bash

```
find . -empty -type d -delete
```