kopia lustrzana https://github.com/pimoroni/pimoroni-pico
80 wiersze
2.4 KiB
C++
80 wiersze
2.4 KiB
C++
#include <stdio.h>
|
|
#include <cmath>
|
|
#include <cstdint>
|
|
#include <string>
|
|
#include <string_view>
|
|
|
|
#include "pico/stdlib.h"
|
|
#include "hardware/vreg.h"
|
|
|
|
#include "common/pimoroni_common.hpp"
|
|
|
|
#include "hub75.hpp"
|
|
#include "font_outline_10x14.hpp"
|
|
|
|
using namespace pimoroni;
|
|
|
|
// Display size in pixels
|
|
// Should be either 64x64 or 32x32 but perhaps 64x32 an other sizes will work.
|
|
// Note: this example uses only 5 address lines so it's limited to 64 pixel high displays (32*2).
|
|
const uint8_t WIDTH = 64;
|
|
const uint8_t HEIGHT = 64;
|
|
|
|
Hub75 hub75(WIDTH, HEIGHT, nullptr, PANEL_GENERIC, true);
|
|
|
|
void __isr dma_complete() {
|
|
hub75.dma_complete();
|
|
}
|
|
|
|
void scroll_text(std::string_view text, uint y, float t, Pixel color) {
|
|
uint text_length = text.length();
|
|
uint x = uint(t);
|
|
uint letter = uint((x / letter_width) % text_length);
|
|
uint pixel = x % letter_width;
|
|
char c = text.at(letter);
|
|
for (auto s_x = 0u; s_x < WIDTH; s_x++) {
|
|
uint32_t col = font[c - 32][pixel];
|
|
for (auto s_y = 0u; s_y < letter_height; s_y++) {
|
|
// Calculate a bit of wiggle!
|
|
uint o_y = int(sinf((t / 3.0f) + s_x / 30.0f) * 8);
|
|
// Step through the uint32 that represents a single column
|
|
// of the current character, and render pixels for set bits.
|
|
if(col & (1 << s_y)) {
|
|
hub75.set_color(s_x, s_y + y + o_y, color);
|
|
}
|
|
}
|
|
// Advance to the text pixel/character
|
|
pixel++;
|
|
if (pixel == letter_width) {
|
|
pixel = 0;
|
|
letter++;
|
|
if (letter == text_length) letter = 0;
|
|
c = text.at(letter);
|
|
}
|
|
}
|
|
}
|
|
|
|
int main() {
|
|
vreg_set_voltage(VREG_VOLTAGE_1_20);
|
|
sleep_us(100);
|
|
set_sys_clock_khz(266000, true);
|
|
|
|
hub75.start(dma_complete);
|
|
|
|
std::string text = " Hello World! How are you today? ";
|
|
|
|
// Basic loop to draw something to the screen.
|
|
// This gets the distance from the middle of the display and uses it to paint a circular colour cycle.
|
|
while (true) {
|
|
hub75.background = hsv_to_rgb(millis() / 10000.0f, 1.0f, 0.5f);
|
|
|
|
// Shadow
|
|
scroll_text(text, HEIGHT / 2 - letter_height / 2 + 1, (millis() + 50) / 50.0f, Pixel(0, 0, 0));
|
|
// Text
|
|
scroll_text(text, HEIGHT / 2 - letter_height / 2, millis() / 50.0f, Pixel(255, 255, 255));
|
|
|
|
hub75.flip(false); // Flip and clear to the background colour
|
|
sleep_ms(1000 / 60);
|
|
}
|
|
}
|