Contiki 2.6
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00001 /* 00002 * Copyright (c) 2010, Mariano Alvira <mar@devl.org> and other contributors 00003 * to the MC1322x project (http://mc1322x.devl.org) and Contiki. 00004 * 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 1. Redistributions of source code must retain the above copyright 00011 * notice, this list of conditions and the following disclaimer. 00012 * 2. Redistributions in binary form must reproduce the above copyright 00013 * notice, this list of conditions and the following disclaimer in the 00014 * documentation and/or other materials provided with the distribution. 00015 * 3. Neither the name of the Institute nor the names of its contributors 00016 * may be used to endorse or promote products derived from this software 00017 * without specific prior written permission. 00018 * 00019 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 00020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00021 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00022 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 00023 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00024 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00025 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00026 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00027 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00028 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00029 * SUCH DAMAGE. 00030 * 00031 * This file is part of the Contiki OS. 00032 * 00033 * 00034 */ 00035 00036 /** 00037 * \file 00038 * mc1322x-specific rtimer code 00039 * \author 00040 * Mariano Alvira <mar@devl.org> 00041 */ 00042 00043 #include <signal.h> 00044 00045 /* contiki */ 00046 #include "sys/energest.h" 00047 #include "sys/rtimer.h" 00048 00049 /* mc1322x */ 00050 #include "utils.h" 00051 00052 #define DEBUG 0 00053 #if DEBUG 00054 #include <stdio.h> 00055 #define PRINTF(...) printf(__VA_ARGS__) 00056 #else 00057 #define PRINTF(...) 00058 #endif 00059 00060 void rtc_isr(void) { 00061 PRINTF("rtc_wu_irq\n\r"); 00062 PRINTF("now is %u\n", rtimer_arch_now()); 00063 disable_rtc_wu(); 00064 disable_rtc_wu_irq(); 00065 rtimer_run_next(); 00066 clear_rtc_wu_evt(); 00067 } 00068 00069 void 00070 rtimer_arch_init(void) 00071 { 00072 } 00073 00074 void 00075 rtimer_arch_schedule(rtimer_clock_t t) 00076 { 00077 volatile uint32_t now; 00078 now = rtimer_arch_now(); 00079 PRINTF("rtimer_arch_schedule time %u; now is %u\n", t,now); 00080 00081 #if 1 00082 /* If specified time is always in the future, counter can wrap without harm */ 00083 *CRM_RTC_TIMEOUT = t - now; 00084 #else 00085 /* Immediate interrupt if specified time is before current time. This may also 00086 happen on counter overflow. */ 00087 if(now>t) { 00088 *CRM_RTC_TIMEOUT = 1; 00089 } else { 00090 *CRM_RTC_TIMEOUT = t - now; 00091 } 00092 #endif 00093 00094 clear_rtc_wu_evt(); 00095 enable_rtc_wu(); 00096 enable_rtc_wu_irq(); 00097 PRINTF("rtimer_arch_schedule CRM_RTC_TIMEOUT is %u\n", *CRM_RTC_TIMEOUT); 00098 }