dj-tools

A. Introduction

This repository contains some small tools from terminal command line to help for daily development. For example, one may want to know each byte of a float variable, then he/she can simply run the following command to find it:

float-to-u8 1.234

B. Installation

cd path/to/dj-tool
make
sudo make install

The installed files will be in folder /usr/local/bin. They are

double-to-u8
float-to-u8
u8-to-double
u8-to-float

The above files (commands) can be run from any path, if no argument was attached, it will show help information like this:

usage: 
    u8-to-float <u8> <u8> <u8> <u8> l/b
    u8-to-float <u8> <u8> <u8> <u8> little/big

C. Examples

C.1. Check each byte of a float number

Run the command:

float-to-u8 1.234

It will output:

 float: 1.234000 <=> u8: [182, 243, 157, 63] (little endian)
 float: 1.234000 <=> u8: [0xB6, 0xF3, 0x9D, 0x3F] (little endian)

C.2. Convert uint8_t numbers to a float number

Run either of the following commands:

u8-to-float 0 0 32 65
u8-to-float 0x00 0x00 0x20 0x41

It will output:

 u8: [0, 0, 32, 65] <=> float: 10.000000 (little endian)

C.3. dj-file

This is a project I developed a few years ago for creating a template C project, which contains main.c and Makefile. It is outdated, but it is a convenience tool to use.

The following commands show how to install it:

cd path/to/dj-file
./install.sh

The following commands show how to use it:

cd to/any/empty/folder
djfile

Then, you will be editing the main.c in vim.