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90 lines
1.7 KiB
C
90 lines
1.7 KiB
C
/**
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* Native Board ltc4150_arch.h implementation
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*
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* Only measures time at the moment. Uses POSIX real-time extension
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* timer to generate periodic signal/interrupt.
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*
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* Copyright (C) 2013 Ludwig Ortmann
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*
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* This file is subject to the terms and conditions of the LGPLv2. See
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* the file LICENSE in the top level directory for more details.
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*
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* @ingroup native_board
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* @ingroup ltc4150
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* @{
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* @file
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* @author Ludwig Ortmann <ludwig.ortmann@fu-berlin.de>
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*/
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#include <stdio.h>
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#include <signal.h>
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#include <time.h>
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#include <err.h>
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#include "ltc4150_arch.h"
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#include "debug.h"
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#include "cpu.h"
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#include "cpu-conf.h"
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#include "hwtimer.h"
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#define native_ltc4150_startup_delay 10
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static int _int_enabled;
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/**
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* native ltc4150 hwtimer - interrupt handler proxy
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*/
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static void _int_handler()
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{
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DEBUG("ltc4150 _int_handler()\n");
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ltc4150_interrupt();
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if (_int_enabled == 1) {
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if (hwtimer_set(100000, _int_handler, NULL) == -1) {
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errx(1, "_int_handler: hwtimer_set");
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};
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}
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}
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/**
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* unregister signal handler
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*/
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void ltc4150_disable_int(void)
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{
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DEBUG("ltc4150_disable_int()\n");
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_int_enabled = 0;
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}
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/**
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* register signal handler
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*/
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void ltc4150_enable_int(void)
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{
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DEBUG("ltc4150_enable_int()\n");
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_int_enabled = 1;
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if (hwtimer_set(100000, _int_handler, NULL) == -1) {
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errx(1, "ltc4150_enable_int: hwtimer_set");
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};
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}
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/**
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* elaborate nop
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*/
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void ltc4150_sync_blocking(void)
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{
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DEBUG("ltc4150_sync_blocking()\n");
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for (int i = native_ltc4150_startup_delay; i > 0; i--);
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}
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/**
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* set up posix real-time timer to simulate coloumb counter ticks
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*/
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void ltc4150_arch_init(void)
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{
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ltc4150_disable_int();
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puts("Native LTC4150 initialized.");
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}
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/** @} */
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