109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
/*
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* Copyright (c) 2012, STMicroelectronics.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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*/
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/*---------------------------------------------------------------------------*/
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#include <stdio.h>
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#include "contiki.h"
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#include "platform-conf.h"
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#include "contiki-conf.h"
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#include "dev/leds.h"
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#include "stm32l1xx.h"
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#include "stm32l1xx_hal_rcc.h"
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#include "stm32l1xx_hal_cortex.h"
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#include "stm32l1xx_hal.h"
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#include "st-lib.h"
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/*---------------------------------------------------------------------------*/
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#define RELOAD_VALUE ((F_CPU / CLOCK_CONF_SECOND) - 1)
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/*---------------------------------------------------------------------------*/
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static volatile unsigned long seconds = 0;
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static volatile clock_time_t ticks;
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void st_lib_sys_tick_handler(void);
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/*---------------------------------------------------------------------------*/
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void
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st_lib_sys_tick_handler(void)
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{
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ticks++;
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if((ticks % CLOCK_SECOND) == 0) {
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seconds++;
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energest_flush();
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}
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HAL_IncTick();
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if(etimer_pending()) {
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etimer_request_poll();
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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clock_init(void)
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{
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ticks = 0;
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st_lib_hal_systick_clk_source_config(SYSTICK_CLKSOURCE_HCLK);
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st_lib_hal_systick_config(RELOAD_VALUE);
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}
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/*---------------------------------------------------------------------------*/
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unsigned long
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clock_seconds(void)
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{
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return seconds;
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}
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/*---------------------------------------------------------------------------*/
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void
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clock_set_seconds(unsigned long sec)
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{
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seconds = sec;
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}
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/*---------------------------------------------------------------------------*/
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clock_time_t
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clock_time(void)
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{
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return ticks;
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}
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/*---------------------------------------------------------------------------*/
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void
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clock_delay(unsigned int i)
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{
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for(; i > 0; i--) {
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unsigned int j;
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for(j = 50; j > 0; j--) {
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asm ("nop");
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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/* Wait for a multiple of clock ticks (7.8 ms at 128 Hz). */
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void
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clock_wait(clock_time_t t)
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{
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clock_time_t start;
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start = clock_time();
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while(clock_time() - start < (clock_time_t)t) ;
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}
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/*---------------------------------------------------------------------------*/
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