/* * Author: Jon Trulson * Copyright (c) 2016 Intel Corporation. * * This program and the accompanying materials are made available under the * terms of the The MIT License which is available at * https://opensource.org/licenses/MIT. * * SPDX-License-Identifier: MIT */ #include #include #include #include #include int shouldRun = true; void sig_handler(int signo) { if (signo == SIGINT) shouldRun = false; } int main () { signal(SIGINT, sig_handler); //! [Interesting] // Instantiate a GroveLEDBar, we use D8 for the data, and D9 for the // clock. We only use a single instance. my9221_context leds = my9221_init(8, 9, 1); if (!leds) { printf("my9221_init() failed\n"); return 1; } while (shouldRun) { // count up printf("Counting up: "); for (int i=0; i=0; i--) { printf("%d ", i); my9221_clear_all(leds); my9221_set_led(leds, i, true); upm_delay_ms(100); } printf("\n"); upm_delay_ms(100); } printf("Exiting...\n"); my9221_close(leds); //! [Interesting] return 0; }