Git-Mirrors/OpenModem
1
0
Fork 0
mirror of https://github.com/markqvist/OpenModem.git synced 2025-05-16 13:22:29 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Working

Browse source
This commit is contained in:
Mark Qvist 2014-04-03 22:21:37 +02:00
commit c898b090dd
1049 changed files with 288572 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

191
bertos/drv/phase.c Normal file
View file

@ -0,0 +1,191 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2005 Develer S.r.l. (http://www.develer.com/)
* -->
*
* \brief Phase control driver (implementation)
*
*
* \author Francesco Sacchi <batt@develer.com>
*/
#include "hw/hw_phase.h"
#include <cfg/macros.h>
#include <cfg/compiler.h>
#include <cpu/irq.h>
#include <cpu/types.h>
#include <drv/timer.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 != CONFIG_TRIAC_MAX_DUTY)
TRIAC_OFF(dev);
/* Compute delay from duty */
timer_setDelay(&triacs[dev].timer, DIV_ROUND(period * (CONFIG_TRIAC_MAX_DUTY - triacs[dev].duty), CONFIG_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)
{
cpu_flags_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)CONFIG_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)CONFIG_TRIAC_MAX_POWER);
if (power > CONFIG_TRIAC_MAX_POWER / 2)
{
greater_fifty = true;
power = CONFIG_TRIAC_MAX_POWER - power;
}
duty = TRIAC_POWER_K * sqrt(power);
if (greater_fifty)
duty = CONFIG_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)
{
cpu_flags_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_setSoftint(&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);
}