178 lines
5.0 KiB
C
178 lines
5.0 KiB
C
/**
|
|
* \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 2004 Develer S.r.l. (http://www.develer.com/)
|
|
* Copyright 2004 Giovanni Bajo
|
|
*
|
|
* -->
|
|
*
|
|
* \brief Hardware support for buzzers and leds in DSP56K-based boards
|
|
*
|
|
*
|
|
* \author Giovanni Bajo <rasky@develer.com>
|
|
*/
|
|
|
|
/*#*
|
|
*#* $Log$
|
|
*#* Revision 1.7 2006/07/19 12:56:25 bernie
|
|
*#* Convert to new Doxygen style.
|
|
*#*
|
|
*#* Revision 1.6 2005/11/04 16:20:02 bernie
|
|
*#* Fix reference to README.devlib in header.
|
|
*#*
|
|
*#* Revision 1.5 2005/04/11 19:10:27 bernie
|
|
*#* Include top-level headers from cfg/ subdir.
|
|
*#*
|
|
*#* Revision 1.4 2004/11/16 21:54:43 bernie
|
|
*#* Changes for SC Monoboard support.
|
|
*#*
|
|
*#* Revision 1.3 2004/08/25 14:12:08 rasky
|
|
*#* Aggiornato il comment block dei log RCS
|
|
*#*
|
|
*#* Revision 1.2 2004/06/03 11:27:09 bernie
|
|
*#* Add dual-license information.
|
|
*#*
|
|
*#* Revision 1.1 2004/05/23 18:36:05 bernie
|
|
*#* Import buzzerled driver.
|
|
*#*
|
|
*#*/
|
|
|
|
#ifndef DRV_BUZZERLED_DSP56K_H
|
|
#define DRV_BUZZERLED_DSP56K_H
|
|
|
|
#include <cfg/compiler.h>
|
|
#include <hw.h>
|
|
#include "pwm.h"
|
|
|
|
#if ARCH & ARCH_HECO
|
|
|
|
/**
|
|
* \name Connection of the leds to the DSP:
|
|
* <pre>
|
|
* Led Line DSP Pin
|
|
* ---------------------------
|
|
* YELLOW T2 HOME1/TB3
|
|
* GREEN T3 INDX1/TB2
|
|
* RED T4 PHB1/TB1
|
|
* </pre>
|
|
*/
|
|
|
|
INLINE bool bld_is_inverted_intensity(enum BLD_DEVICE device)
|
|
{
|
|
return (device == BLD_GREEN_LED
|
|
|| device == BLD_YELLOW_LED
|
|
|| device == BLD_RED_LED);
|
|
}
|
|
|
|
INLINE bool bld_is_pwm(enum BLD_DEVICE device)
|
|
{
|
|
// Only the buzzer is connected to a PWM
|
|
return (device == BLD_BUZZER || device == BLD_READY_LED);
|
|
}
|
|
|
|
INLINE bool bld_is_timer(enum BLD_DEVICE device)
|
|
{
|
|
// LEDs are connected to timers
|
|
return (device == BLD_GREEN_LED || device == BLD_YELLOW_LED || device == BLD_RED_LED);
|
|
}
|
|
|
|
INLINE uint16_t bld_get_pwm(enum BLD_DEVICE device)
|
|
{
|
|
switch (device)
|
|
{
|
|
default: ASSERT(0);
|
|
case BLD_BUZZER: return 5; // PWMA5
|
|
case BLD_READY_LED: return 9; // PWMB3
|
|
}
|
|
}
|
|
|
|
|
|
INLINE struct REG_TIMER_STRUCT* bld_get_timer(enum BLD_DEVICE device)
|
|
{
|
|
switch (device)
|
|
{
|
|
default: ASSERT(0);
|
|
case BLD_GREEN_LED: return ®_TIMER_B[2];
|
|
case BLD_RED_LED: return ®_TIMER_B[1];
|
|
case BLD_YELLOW_LED: return ®_TIMER_B[3];
|
|
}
|
|
}
|
|
|
|
INLINE void bld_hw_init(void)
|
|
{
|
|
}
|
|
|
|
INLINE void bld_hw_set(enum BLD_DEVICE device, bool enable)
|
|
{
|
|
if (bld_is_inverted_intensity(device))
|
|
enable = !enable;
|
|
|
|
// Handle a BLD connected to a PWM
|
|
if (bld_is_pwm(device))
|
|
{
|
|
struct PWM* pwm = pwm_get_handle(bld_get_pwm(device));
|
|
|
|
pwm_set_enable(pwm, false);
|
|
pwm_set_dutycycle_percent(pwm, (enable ? 50 : 0));
|
|
pwm_set_enable(pwm, true);
|
|
}
|
|
else if (bld_is_timer(device))
|
|
{
|
|
struct REG_TIMER_STRUCT* timer = bld_get_timer(device);
|
|
|
|
// Check that the timer is currently stopped, and the OFLAG is not
|
|
// controlled by another timer. Otherwise, the led is already
|
|
// controlled by the timer, and we cannot correctly set it
|
|
// on/off without reprogramming the timer.
|
|
ASSERT((timer->CTRL & REG_TIMER_CTRL_MODE_MASK) == REG_TIMER_CTRL_MODE_STOP);
|
|
ASSERT(!(timer->SCR & REG_TIMER_SCR_EEOF));
|
|
|
|
// Check also that polarity is correct
|
|
ASSERT(!(timer->SCR & REG_TIMER_SCR_OPS));
|
|
|
|
// Without programming the timer, we have a way to manually force a certain
|
|
// value on the external pin. We also need to enable the output pin.
|
|
timer->SCR &= ~REG_TIMER_SCR_VAL_1;
|
|
timer->SCR |= REG_TIMER_SCR_OEN |
|
|
REG_TIMER_SCR_FORCE |
|
|
(!enable ? REG_TIMER_SCR_VAL_0 : REG_TIMER_SCR_VAL_1);
|
|
}
|
|
else
|
|
ASSERT(0);
|
|
}
|
|
|
|
#elif ARCH & ARCH_SC
|
|
|
|
// We do not need inline functions here, because constant propagation is not big deal here
|
|
void bld_hw_init(void);
|
|
void bld_hw_set(enum BLD_DEVICE device, bool enable);
|
|
|
|
#endif
|
|
|
|
#endif /* DRV_BUZZERLED_DSP56K_H */
|