--- a/drivers/ecos_lpc2138_sja1000/time_slicer.c Tue Feb 13 17:21:19 2007 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,219 +0,0 @@
-/*
-This file is part of CanFestival, a library implementing CanOpen Stack.
-
- Author: Christian Fortin (canfestival@canopencanada.ca)
-
-See COPYING file for copyrights details.
-
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
-License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
-
-This library 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
-Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public
-License along with this library; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-*/
-
-#include <stdlib.h>
-
-#include <sys/time.h>
-#include <signal.h>
-
-#include <cyg/kernel/kapi.h>
-#include <cyg/hal/hal_arch.h>
-
-#include "applicfg.h"
-
-#include <timer.h>
-
-
-#define max(a,b) a>b?a:b
-#define min(a,b) a<b?a:b
-
-
-// --------- The timer table ---------
-s_timer_entry timers[MAX_NB_TIMER] = {{TIMER_FREE, NULL, NULL, 0, 0, 0},};
-TIMEVAL total_sleep_time = TIMEVAL_MAX;
-TIMER_HANDLE last_timer_raw = -1;
-
-cyg_alarm_t chrono_timer;
-cyg_alarm alarm_timer;
-cyg_handle_t alarm_handle_timer;
-cyg_handle_t rtclock, rtcounter;
-
-void init_timer(void)
-{
- rtclock = cyg_real_time_clock();
- cyg_clock_to_counter(rtclock, &rtcounter);
-
- cyg_alarm_create(rtcounter,
- &chrono_timer,
- 0,
- &alarm_handle_timer,
- &alarm_timer);
-}
-
-
-unsigned int getElapsedTime(void)
-{
- // HCS12 main timer : Increment every 4 us.
- return 0; // IO_PORTS_16(TCNTH);
-}
-
-
-void setTimer(TIMEVAL tm /* in ms? s? us? */)
-{
-/*
- this function is required by the library to make the scheduler work
- properly
- it is called by SetAlarm() (in src/timer.c)
-
- the interrupt vector must call TimeDispatch() (in src/timer.c)
-*/
- /*
- value of alarm time for eCos
- 1 = 10 msec
- 100 = 1 sec
-
-#define MS_TO_TIMEVAL(ms) ms/10
-#define US_TO_TIMEVAL(us) us*4
-
- */
-
- cyg_alarm_initialize(alarm_handle_timer, tm, 0);
-}
-
-
-void chrono_timer(cyg_handle_t alarm, cyg_addrword_t data)
-{
- int i;
- int next_wakeup = TIMEVAL_MAX; // used to compute when should normaly occur next wakeup
- // First run : change timer state depending on time
- // Get time since timer signal
- int overrun = getElapsedTime();
-
- int real_total_sleep_time = total_sleep_time + overrun;
-
- for(i=0; i <= last_timer_raw; i++)
- {
- s_timer_entry *row = (timers+i);
-
- if (row->state & TIMER_ARMED) // if row is active
- {
- if (row->val <= real_total_sleep_time) // to be trigged
- {
- if (!row->interval) // if simply outdated
- {
- row->state = TIMER_TRIG; // ask for trig
- }
- else // or period have expired
- {
- // set val as interval, with overrun correction
- row->val = row->interval - (overrun % row->interval);
- row->state = TIMER_TRIG_PERIOD; // ask for trig, periodic
- // Check if this new timer value is the soonest
- next_wakeup = min(row->val,next_wakeup);
- }
- }
- else
- {
- // Each armed timer value in decremented.
- row->val -= real_total_sleep_time;
-
- // Check if this new timer value is the soonest
- next_wakeup = min(row->val,next_wakeup);
- }
- }
- }
-
- // Remember how much time we should sleep.
- total_sleep_time = next_wakeup;
-
- // Set timer to soonest occurence
- setTimer(next_wakeup);
-
- // Then trig them or not.
- for(i=0; i<=last_timer_raw; i++)
- {
- s_timer_entry *row = (timers+i);
-
- if (row->state & TIMER_TRIG)
- {
- row->state &= ~TIMER_TRIG; // reset trig state (will be free if not periodic)
- (*row->callback)(row->d, row->id); // trig !
- }
- }
-}
-
-
-
-
-TIMER_HANDLE SetAlarm(CO_Data* d, UNS32 id, TimerCallback_t callback, TIMEVAL value, TIMEVAL period)
-{
- int i;
- TIMER_HANDLE row_number = TIMER_NONE;
-
- if (callback == NULL) // nothing to store
- return TIMER_NONE;
-
- // in order to decide new timer setting we have to run over all timer rows
-
- for(i=0; i <= last_timer_raw + 1 && i < MAX_NB_TIMER; i++)
- {
- s_timer_entry *row = (timers+i);
-
- if (row->state == TIMER_FREE) // an empty row
- { // just store
- row->callback = callback;
- row->d = d;
- row->id = id;
- row->val = value;
- row->interval = period;
- row->state = TIMER_ARMED;
-
- row_number = i;
- break;
- }
- }
-
- if (row_number != TIMER_NONE) // if successfull
- {
- if (row_number == last_timer_raw + 1) last_timer_raw++;
-
- // set next wakeup alarm if new entry is sooner than others, or if it is alone
- unsigned int real_timer_value = min(value, TIMEVAL_MAX);
- unsigned int elapsed_time = getElapsedTime();
-
- if (total_sleep_time > elapsed_time && total_sleep_time - elapsed_time > real_timer_value)
- {
- total_sleep_time = elapsed_time + real_timer_value;
- setTimer(real_timer_value);
- }
-
- return row_number;
- }
-
- return TIMER_NONE;
-}
-
-// --------- Use this to remove an alarm ---------
-TIMER_HANDLE DelAlarm(TIMER_HANDLE handle)
-{
- if (handle != TIMER_NONE)
- {
- if (handle == last_timer_raw)
- last_timer_raw--;
- timers[handle].state = TIMER_FREE;
- }
- else
- {
- }
-
- return TIMER_NONE;
-}