/* * This file is part of the libopencm3 project. * * Copyright (C) 2009 Uwe Hermann * 2012 chrysn * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ //#include // //void gpio_setup(void) //{ // /* Enable GPIOC clock. */ // /* Manually: */ // // RCC_APB2ENR |= RCC_APB2ENR_IOPCEN; // /* Using API functions: */ // rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN); // // /* Set GPIO8 (in GPIO port C) to 'output push-pull'. */ // /* Manually: */ // // GPIOC_CRH = (GPIO_CNF_OUTPUT_PUSHPULL << (((8 - 8) * 4) + 2)); // // GPIOC_CRH |= (GPIO_MODE_OUTPUT_2_MHZ << ((8 - 8) * 4)); // /* Using API functions: */ // gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ, // GPIO_CNF_OUTPUT_PUSHPULL, GPIO8); //} int main(void) { // int i; // // gpio_setup(); // // /* Blink the LED (PC8) on the board. */ // while (1) { // /* Manually: */ // // GPIOC_BSRR = GPIO8; /* LED off */ // // for (i = 0; i < 800000; i++) /* Wait a bit. */ // // __asm__("nop"); // // GPIOC_BRR = GPIO8; /* LED on */ // // for (i = 0; i < 800000; i++) /* Wait a bit. */ // // __asm__("nop"); // // /* Using API functions gpio_set()/gpio_clear(): */ // // gpio_set(GPIOC, GPIO8); /* LED off */ // // for (i = 0; i < 800000; i++) /* Wait a bit. */ // // __asm__("nop"); // // gpio_clear(GPIOC, GPIO8); /* LED on */ // // for (i = 0; i < 800000; i++) /* Wait a bit. */ // // __asm__("nop"); // // /* Using API function gpio_toggle(): */ // gpio_toggle(GPIOC, GPIO8); /* LED on/off */ // for (i = 0; i < 800000; i++) /* Wait a bit. */ // __asm__("nop"); // } // // return 0; for(;;); }