+++ /dev/null
-/**
- * \file
- * <!--
- * Copyright 2005 Develer S.r.l. (http://www.develer.com/)
- * -->
- *
- * \version $Id$
- *
- * \brief Phase control driver (implementation)
- *
- * \version $Id$
- * \author Francesco Sacchi <batt@develer.com>
- */
-
-/*#*
- *#* $Log$
- *#* Revision 1.2 2006/07/19 12:56:26 bernie
- *#* Convert to new Doxygen style.
- *#*
- *#* Revision 1.1 2005/11/04 18:06:44 bernie
- *#* Import into DevLib.
- *#*
- *#* Revision 1.1 2005/05/24 09:17:58 batt
- *#* Move drivers to top-level.
- *#*
- *#* Revision 1.14 2005/05/20 12:21:05 batt
- *#* Reformat.
- *#*
- *#* Revision 1.13 2005/05/09 16:34:14 batt
- *#* Change some function names to accomplish coding standard; Add debug phase_initialized; Change duty_t and power_t to uint16_t.
- *#*
- *#* Revision 1.12 2005/05/04 17:22:30 batt
- *#* Workaround a Doxygen parsing problem.
- *#*
- *#* Revision 1.11 2005/05/02 09:05:03 batt
- *#* Rename duty_t and power_t in triac_duty_t and triac_power_t
- *#*
- *#* Revision 1.10 2005/05/02 08:48:55 batt
- *#* Disable interrupt only when necessary.
- *#*
- *#* Revision 1.9 2005/04/29 11:52:51 batt
- *#* Remove debug printf; Add a comment.
- *#*
- *#* Revision 1.8 2005/04/29 10:22:56 batt
- *#* Avoid retriggering TRIAC on low duty-cycle.
- *#*
- *#* Revision 1.7 2005/04/29 09:54:36 batt
- *#* Convert to new timer.
- *#*
- *#* Revision 1.6 2005/04/28 17:11:53 batt
- *#* Expand abbreviation.
- *#*
- *#* Revision 1.5 2005/04/28 15:10:11 batt
- *#* Use timer API to add and set events.
- *#*
- *#* Revision 1.4 2005/04/28 12:04:46 batt
- *#* Add some comments.
- *#*
- *#* Revision 1.3 2005/04/28 10:35:45 batt
- *#* Complete phase_setpower.
- *#*
- *#* Revision 1.2 2005/04/27 19:22:49 batt
- *#* Add duty_t, power_t, MAX_DUTY and MAX_POWER
- *#*
- *#* Revision 1.1 2005/04/27 17:13:56 batt
- *#* Add triac phase control driver.
- *#*
- *#*/
-
-#include <drv/timer.h>
-
-
-#include <cfg/macros.h>
-#include <cfg/cpu.h>
-#include <cfg/compiler.h>
-
-
-#include <hw_phase.h>
-#include <drv/phase.h>
-
-#include <math.h>
-
-/** Array of triacs */
-static Triac triacs[TRIAC_CNT];
-
-DB(bool phase_initialized;)
-
-/**
- * Zerocross interrupt, call when 220V cross zero.
- *
- * This function turn off all triacs that have duty < 100%
- * and arm the triac timers for phase control.
- * This function is frequency adaptive so can work both at 50 or 60Hz.
- */
-DEFINE_ZEROCROSS_ISR()
-{
- ticks_t period, now;
- static ticks_t prev_time;
- TriacDev dev;
-
- now = timer_clock_unlocked();
- period = now - prev_time;
-
- for (dev = 0; dev < TRIAC_CNT; dev++)
- {
- /* Only turn off triac if duty is != 100% */
- if (triacs[dev].duty != TRIAC_MAX_DUTY)
- TRIAC_OFF(dev);
- /* Compute delay from duty */
- timer_setDelay(&triacs[dev].timer, ((period * (TRIAC_MAX_DUTY - triacs[dev].duty) + TRIAC_MAX_DUTY / 2) / TRIAC_MAX_DUTY));
-
- /* This check avoids inserting the same timer twice
- * in case of an intempestive zerocross or spike */
- if (triacs[dev].running)
- {
- timer_abort(&triacs[dev].timer);
- //kprintf("[%lu]\n", timer_clock());
- }
-
- triacs[dev].running = true;
- timer_add(&triacs[dev].timer);
- }
- prev_time = now;
-}
-
-
-
-/**
- * Set duty of the triac channel \a dev (interrupt safe).
- */
-void phase_setDuty(TriacDev dev, triac_duty_t duty)
-{
- cpuflags_t flags;
- IRQ_SAVE_DISABLE(flags);
-
- phase_setDutyUnlock(dev,duty);
-
- IRQ_RESTORE(flags);
-}
-
-
-
-/**
- * Set duty of the triac channel \a dev (NOT INTERRUPT SAFE).
- */
-void phase_setDutyUnlock(TriacDev dev, triac_duty_t duty)
-{
- triacs[dev].duty = MIN(duty, (triac_duty_t)TRIAC_MAX_DUTY);
-}
-
-
-
-/**
- * Set power of the triac channel \a dev (interrupt safe).
- *
- * This function approsimate the sine wave to a triangular wave to compute
- * RMS power.
- */
-void phase_setPower(TriacDev dev, triac_power_t power)
-{
- bool greater_fifty = false;
- triac_duty_t duty;
-
- power = MIN(power, (triac_power_t)TRIAC_MAX_POWER);
-
- if (power > TRIAC_MAX_POWER / 2)
- {
- greater_fifty = true;
- power = TRIAC_MAX_POWER - power;
- }
-
- duty = TRIAC_POWER_K * sqrt(power);
-
- if (greater_fifty)
- duty = TRIAC_MAX_DUTY - duty;
- phase_setDuty(dev, duty);
-}
-
-
-
-/**
- * Soft int for each \a _dev triac.
- *
- * The triacs are turned on at different time to achieve phase control.
- */
-static void phase_softint(void *_dev)
-{
- TriacDev dev = (TriacDev)_dev;
-
- /* Only turn on if duty is !=0 */
- if (triacs[dev].duty)
- TRIAC_ON(dev);
- triacs[dev].running = false;
-}
-
-
-
-/**
- * Initialize phase control driver
- */
-void phase_init(void)
-{
- cpuflags_t flags;
- TriacDev dev;
-
- /* Init timers and ensure that all triac are off */
- for (dev = 0; dev < TRIAC_CNT; dev++)
- {
- triacs[dev].duty = 0;
- triacs[dev].running = false;
- SET_TRIAC_DDR(dev);
- TRIAC_OFF(dev);
- timer_set_event_softint(&triacs[dev].timer, (Hook)phase_softint, (void *)dev);
- }
- IRQ_SAVE_DISABLE(flags);
-
- /* Init zero cross interrupt */
- PHASE_HW_INIT;
- DB(phase_initialized = true;)
- IRQ_RESTORE(flags);
-}
projects / bertos.git / blobdiff