90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
/*
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____ _ _ _ _ _ __
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| __ )| | / \ | \ | | |/ /
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| _ \| | / _ \ | \| | ' /
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| |_) | |___ / ___ \| |\ | . \
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|____/|_____/_/ \_\_| \_|_|\_\
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Simple blank screen (black) for LED matrix
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Used when user wants to turn off the display
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Pour compiler:
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g++ -I/var/www/moduleair_pro_4g/matrix/include -L/var/www/moduleair_pro_4g/matrix/lib /var/www/moduleair_pro_4g/matrix/screenSensors/blank_screen.cc -o /var/www/moduleair_pro_4g/matrix/screenSensors/blank_screen -lrgbmatrix
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Pour lancer:
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sudo /var/www/moduleair_pro_4g/matrix/screenSensors/blank_screen
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*/
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#include "led-matrix.h"
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#include "graphics.h"
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#include <unistd.h>
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#include <iostream>
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#include <signal.h>
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#include <atomic>
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using rgb_matrix::RGBMatrix;
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using rgb_matrix::Canvas;
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std::atomic<bool> running(true);
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void signal_handler(int signum) {
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running = false;
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}
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int main(int argc, char *argv[]) {
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std::cout << "Blank Screen Display started" << std::endl;
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// Handle signals for graceful exit
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signal(SIGINT, signal_handler);
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signal(SIGTERM, signal_handler);
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// Initialize LED matrix
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std::cout << "Initializing LED matrix..." << std::endl;
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RGBMatrix::Options defaults;
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defaults.hardware_mapping = "moduleair_pinout";
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defaults.rows = 64;
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defaults.cols = 128;
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defaults.chain_length = 1;
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defaults.parallel = 1;
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defaults.row_address_type = 3;
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defaults.show_refresh_rate = false;
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defaults.brightness = 100;
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defaults.pwm_bits = 1;
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defaults.panel_type = "FM6126A";
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defaults.disable_hardware_pulsing = false;
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rgb_matrix::RuntimeOptions runtime_opt;
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runtime_opt.gpio_slowdown = 4;
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runtime_opt.daemon = 0;
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runtime_opt.drop_privileges = 0;
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Canvas *canvas = RGBMatrix::CreateFromOptions(defaults, runtime_opt);
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if (canvas == NULL) {
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std::cerr << "Error creating LED matrix canvas" << std::endl;
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return 1;
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}
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std::cout << "LED matrix initialized successfully" << std::endl;
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// Clear the screen (turn all pixels black)
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canvas->Clear();
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std::cout << "Screen cleared - all pixels black" << std::endl;
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// Main loop - just keep the screen blank
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std::cout << "Blank screen active - press Ctrl+C to exit" << std::endl;
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while (running) {
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// Ensure screen stays clear
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canvas->Clear();
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// Sleep for 5 seconds before next clear
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for (int i = 0; i < 5 && running; i++) {
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sleep(1);
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}
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}
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// Clean up
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std::cout << "Program terminating, cleaning up..." << std::endl;
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canvas->Clear();
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delete canvas;
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std::cout << "Blank Screen Display terminated" << std::endl;
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return 0;
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} |