/* ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010, 2011,2012 Giovanni Di Sirio. This file is part of ChibiOS/RT. ChibiOS/RT 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. ChibiOS/RT 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 "ch.h" #if !defined(SYSTEM_CLOCK) #define SYSTEM_CLOCK 8000000 #endif static uint32_t seconds_counter; static uint32_t minutes_counter; /* * This is a periodic thread that does absolutely nothing except increasing * the seconds counter. */ static WORKING_AREA(waThread1, 128); static msg_t Thread1(void *arg) { (void)arg; while (TRUE) { chThdSleepMilliseconds(1000); seconds_counter++; } } /* * Application entry point. */ int main(void) { /** * Hardware initialization, in this simple demo just the systick timer is * initialized. */ STBase->RVR = SYSTEM_CLOCK / CH_FREQUENCY - 1; STBase->CVR = 0; STBase->CSR = CLKSOURCE_CORE_BITS | ENABLE_ON_BITS | TICKINT_ENABLED_BITS; /* * System initializations. * - Kernel initialization, the main() function becomes a thread and the * RTOS is active. */ chSysInit(); /* * Creates the example thread. */ chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL); /* * Normal main() thread activity, in this demo it does nothing except * increasing the minutes counter. */ while (TRUE) { chThdSleepSeconds(60); minutes_counter++; } }