Bash yaml parser

yb - a bash yaml parser

yb provides a pure Bash solution to YAML parsing.

• Usage
• Options
• YAML support

Usage

yb [-h|-a|-c|-q|-r|-A-C-d-F-K-l-L-R-n-T] [-f <file>|-o <object>] [-k <key>] [-v <value>|-O <object value>]

Examples

./yb -f file.yaml -k "key.childkey"

From the repository, you can do a quick try like so:

./yb -f tests/user.yaml -k "yb"

Create keys:

./yb -af tests/user.yaml -k "new.key"

add an inline-value:

./yb -af tests/user.yaml -k "new.key" -v "one, two"

change it:

./yb -cf tests/user.yaml -k "new.key" -v "three"

add list-values:

./yb -af tests/user.yaml -k "new.- list" -v "- one - two"

add an ASCII within a pipe-key:

./yb -af tests/user.yaml -k "new.ascii|" -v "|>  ___  _ |>  \  \// |>   \  / |>   / / |>  /_/"

manipulate the YAML as a bash variable:

# using the '-R' raw option is advised to retrieve the content without color codes
my_YAML=$(./yb -f tests/user.yaml -k "new")
my_YAML=$(./yb -ao "${my_YAML}" -k "in_memory" -v "true")

add it to a file:

./yb -af tests/user.yaml -k "new.copy" -o "${my_YAML}"

Remove one value:

./yb -rf tests/user.yaml -k "new.- list" -v "- one"

or remove everything:

./yb -rf tests/user.yaml -k "new"

Options

yb options are divided under 3 types:

• action: action options are ran against the file and are not compatible with each others. They are compatible with input, but not format.
• input: input options are user settable options, and are compatible with each others. They are compatible with both action and format.
• format: format options print the output in various ways. They are compatible with each others, with the input type , but not the action one.

YAML support

yb provides the basic YAML support for editing and reading a YAML file. As by version 0.9, yb doesn’t support advanced features such as group based search, anchors, aliases, and overrides.

Thank you

All of you, YAML’ers !

Made in Bash.

WD.Easy

WD.Easy

This library is intended to control watchdog modes of operation, so far only series microcontrollers AVR.

Features

I did not write it in the style of a singleton class (the watchdog is one). No matter how many objects are created, they will all work with the same register. I set myself the task to make the library as easy as possible and can be used for any Arduino and not only.

The main requirement is that the TIMER SHOULD START COUNTING EVEN BEFORE THE FUNCTION setup STARTS , and even better before the start of main.

It seems to have worked

Methods are available in the timer

Intervals

The table shows the parameters accepted by the method setTimeOut(uint8_t) and returns getTimeOut().

Note The time is approximate and not suitable for measuring exact intervals, since the watchdog timer is clocked by an internal low-latency oscillator that “floats” when the supply voltage and temperature change

Actions

Обробник переривань

By default, no interrupt handler is specified (nullptr).

Examples

Example one

void WD_tick() {
Serial.print("WD_tick()");
Serial.println(millis());
}

WatchDogEasy WD(WatchDogEasy::WD_1S, WatchDogEasy::INTERRUPT, WD_tick);

void setup() { Serial.begin(115200); }
void loop() {}

Here we trigger the timer to fire every second, when it fires, an interrupt will be generated, which will be handled by the WD_tick() function.

In this example, the timer starts counting even before the setup() function starts. This is convenient if there is a risk of the controller freezing during initiation.

Example two

void WD_tick() {
Serial.print("WD_tick()");
Serial.println(millis());
}

WatchDogEasy WD;

void setup() {
Serial.begin(115200);
WD.setTimeOut(WatchDogEasy::WD_1S);
WD.setMode(WatchDogEasy::INTERRUPT);
WD.setTask(WD_tick);
}
void loop() {}

Everything is the same here, but the timer starts counting after the last setter.

All setters reset the timer to a new count. Getters do not (Be careful). During the execution of the getter, the time may coincide and the action programmed in the timer may be executed.

Example three

WatchDogEasy WD(WatchDogEasy::WD_1S, WatchDogEasy::SYSTEMRESET, nullptr);

int main(){
for(;;){

}
}

Here, the timer is initialized before entering main(). In my opinion, it’s super convenient

“System Requirements”

The timer will work on any Arduino and AVR series microcontrollers

An additional 2 bytes in the RAM will take up space in the flash 198 bytes

The most important thing

Installation

1. You can download a zip archive WD.Easy v1.0 And extract the contents to the desired directory
2. The library is available for installation through the Arduino IDE library manager.
3. You can download a zip archive WD.Easy prerelise. This is a test branch with the most recent code, not debugged. It is set as the first item of this list

Need to connect

 #include <WD.Easy.hpp>

and do not forget to set the timer so that it does not reset the program