kopia lustrzana https://github.com/pimoroni/pimoroni-pico
84 wiersze
2.8 KiB
Markdown
84 wiersze
2.8 KiB
Markdown
# Interstate 75 (C++) <!-- omit in toc -->
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This library offers convenient functions for interacting with [Interstate75](https://shop.pimoroni.com/products/interstate-75) and [Interstate75W](https://shop.pimoroni.com/products/interstate-75-w) - Interstate75 and Interstate75W offer an convenient way and 2 input buttons for all your display and control needs.
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- [Example Program](#example-program)
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- [Function Reference](#function-reference)
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- [PicoGraphics](#picographics)
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- [HUB75](#hub75)
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## Example Program
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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.
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```c++
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#include "libraries/pico_graphics/pico_graphics.hpp"
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#include "libraries/interstate75/interstate75.hpp"
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#include "rgbled.hpp"
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#include "button.hpp"
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using namespace pimoroni;
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// Display driver for a single 32x32 hub75 matrix
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Hub75 hub75(32, 32, nullptr, PANEL_GENERIC, false);
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// Graphics library - in 24Bit mode with 16M colours
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PicoGraphics_PenRGB888 graphics(hub75.width, hub75.height, nullptr);
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// And each button
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Button button_a(Interstate75::A);
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Button button_b(Interstate75::B);
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// RGB LED
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RGBLED led(Interstate75::LED_R, Interstate75::LED_G, Interstate75::LED_B);
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// Interrupt callback required function
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void __isr dma_complete() {
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hub75.dma_complete();
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}
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int main() {
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hub75.start(dma_complete);
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while(true) {
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// detect if the A button is pressed (could be A, B, C, D or E)
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if(button_a.raw()) {
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// make the led glow green
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// parameters are red, green, blue all between 0 and 255
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// these are also gamma corrected
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led.set_rgb(0, 255, 0);
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}
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// set the colour of the pen
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// parameters are red, green, blue all between 0 and 255
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graphics.set_pen(100, 40, 50);
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// fill the screen with the current pen colour
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graphics.clear();
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// draw a box to put some text in
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graphics.set_pen(10, 20, 100);
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Rect text_rect(1, 1, hub75.width-2, hub75.height-2);
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graphics.rectangle(text_rect);
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// write some text inside the box with 10 pixels of margin
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// automatically word wrapping
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text_rect.deflate(1);
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graphics.set_pen(110, 120, 130);
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graphics.text("This is text", Point(text_rect.x, text_rect.y), text_rect.w, 1.0f);
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// now we've done our drawing let's update the screen
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hub75.update(&graphics);
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}
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}
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```
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## Function Reference
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### PicoGraphics
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Pico GFX Pack uses our Pico Graphics library to draw graphics and text. For more information [read the Pico Graphics function reference.](../pico_graphics/README.md#function-reference).
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### HUB75
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Pico Display uses the HUB75 display driver to handle the led matrix. For more information [read the HUB75 README.](../../drivers/hub75/README.md). |