pimoroni-pico/libraries/interstate75/README.md

Interstate 75 (C++)

This library offers convenient functions for interacting with Interstate75 and Interstate75W - Interstate75 and Interstate75W offer an convenient way and 2 input buttons for all your display and control needs.

• Example Program
• Function Reference
  • PicoGraphics
  • HUB75

Example Program

The following example sets up Pico Display, displays some basic demo text and graphics and will illuminate the LED green if the A button is pressed.

#include "libraries/pico_graphics/pico_graphics.hpp"
#include "libraries/interstate75/interstate75.hpp"
#include "rgbled.hpp"
#include "button.hpp"

using namespace pimoroni;

// Display driver for a single 32x32 hub75 matrix
Hub75 hub75(32, 32, nullptr, PANEL_GENERIC, false);

// Graphics library - in 24Bit mode with 16M colours
PicoGraphics_PenRGB888 graphics(hub75.width, hub75.height, nullptr);

// And each button
Button button_a(Interstate75::A);
Button button_b(Interstate75::B);

// RGB LED
RGBLED led(Interstate75::LED_R, Interstate75::LED_G, Interstate75::LED_B);

// Interrupt callback required function 
void __isr dma_complete() {
  hub75.dma_complete();
}

int main() {
    hub75.start(dma_complete);

    while(true) {
        // detect if the A button is pressed (could be A, B, C, D or E)
        if(button_a.raw()) {
            // make the led glow green
            // parameters are red, green, blue all between 0 and 255
            // these are also gamma corrected
            led.set_rgb(0, 255, 0);
        }

        // set the colour of the pen
        // parameters are red, green, blue all between 0 and 255
        graphics.set_pen(100, 40, 50);

        // fill the screen with the current pen colour
        graphics.clear();

        // draw a box to put some text in
        graphics.set_pen(10, 20, 100);
        Rect text_rect(1, 1, hub75.width-2, hub75.height-2);
        graphics.rectangle(text_rect);

        // write some text inside the box with 10 pixels of margin
        // automatically word wrapping
        text_rect.deflate(1);
        graphics.set_pen(110, 120, 130);
        graphics.text("This is text", Point(text_rect.x, text_rect.y), text_rect.w, 1.0f);

        // now we've done our drawing let's update the screen
        hub75.update(&graphics);
    }
}

Function Reference

PicoGraphics

Pico GFX Pack uses our Pico Graphics library to draw graphics and text. For more information read the Pico Graphics function reference..

HUB75

Pico Display uses the HUB75 display driver to handle the led matrix. For more information read the HUB75 README..