MicroPlot

The microcontroller side of the ArduPlot protocol

An example is present under src/main.cpp

Tested with:

• Raspberry Pi Pico
• Teensy 4.1
• Atmega 328P

But it should be compatible with any microcontroller running the Arduino framework.

Usage

Copy and include ArduPlot.h inside your project (available under include/ArduPlot.h), no extra dependencies needed.

To enable the functions, you must #define ARDUPLOT_DEBUG true before the #include:

#define ARDUPLOT_DEBUG true
#include "ArduPlot.h"

Draw a line graph

ArduPlot::LineGraph(String title, double value)

or, if you want a more optimized function, but the title needs to be a string literal:

ARDUPLOT_LINE_GRAPH(title, value)

Draw line graphs that share a single plot

Line graphs with the same id share the same plot.

ArduPlot::LineGraph(String title, double value, unsigned int id)

or, if you want a more optimized function, but the title and id fields need to be string literals:

ARDUPLOT_SHARED_LINE_GRAPH(title, value, id)

Draw a heatmap

The sizex and sizey parameters tell ArduPlot how many squares to draw respectively in the horizontal and vertical direction.

arr: the array of data itself

size: the size of the array

min and max define the lowest and highest range that the data will have. It's used for coloring the heatmap.

ArduPlot::Heatmap(String title, unsigned int sizex, unsigned int sizey, double min, double max, T arr, unsigned int size)

or, if you want a more optimized function, but the title, sizex, sizey, min, max fields need to be string literals:

ARDUPLOT_HEATMAP_MIN_MAX(title, sizex, sizey, min, max, arr, size)

An override of the function above without the min/max parameters, in this case they can be chosen at runtime when running ArduPlot

ArduPlot::Heatmap(String title, unsigned int sizex, unsigned int sizey, T arr, unsigned int size)

or, if you want a more optimized function, but the title, sizex, sizey fields need to be string literals:

ARDUPLOT_HEATMAP(title, sizex, sizey, arr, size)