104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
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/**
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* \file
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* <!--
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* This file is part of BeRTOS.
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*
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* Bertos is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* As a special exception, you may use this file as part of a free software
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* library without restriction. Specifically, if other files instantiate
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* templates or use macros or inline functions from this file, or you compile
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* this file and link it with other files to produce an executable, this
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* file does not by itself cause the resulting executable to be covered by
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* the GNU General Public License. This exception does not however
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* invalidate any other reasons why the executable file might be covered by
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* the GNU General Public License.
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*
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* Copyright 2008 Develer S.r.l. (http://www.develer.com/)
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*
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* -->
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*
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*
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* \brief PWM hardware-specific definition
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*
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*
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* \author Daniele Basile <asterix@develer.com>
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*/
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#ifndef DRV_PWM_AT91_H
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#define DRV_PWM_AT91_H
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#include <cfg/compiler.h>
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#include <cfg/macros.h>
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#include "cfg/cfg_pwm.h"
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#include <io/arm.h>
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#if CFG_PWM_ENABLE_OLD_API
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#include "hw/pwm_map.h"
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/**
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* Type definition for pwm period.
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*/
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typedef uint16_t pwm_period_t;
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/**
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* Structur definition for pwm driver.
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*/
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typedef struct PwmChannel
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{
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bool duty_zero; ///< True if duty cyle is zero, false otherwise.
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bool pol; ///< PWM polarty flag.
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int pwm_pin; ///< PWM pin.
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reg32_t *mode_reg; ///< PWM mode register.
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reg32_t *duty_reg; ///< PWM duty cycle register.
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reg32_t *period_reg; ///< PWM periodic register.
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reg32_t *update_reg; ///< Update setting register for PWM.
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} PwmChannel;
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void pwm_hw_init(void);
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void pwm_hw_setFrequency(PwmDev dev, uint32_t freq);
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void pwm_hw_setDutyUnlock(PwmDev dev, uint16_t duty);
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void pwm_hw_disable(PwmDev dev);
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void pwm_hw_enable(PwmDev dev);
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void pwm_hw_setPolarity(PwmDev dev, bool pol);
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pwm_period_t pwm_hw_getPeriod(PwmDev dev);
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#else
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#include <drv/pwm.h>
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typedef uint16_t pwm_hwreg_t;
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struct PwmChannelRegs; //fwd decl
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typedef struct PwmHardware
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{
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uint32_t pwm_pin; ///< PWM pin.
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volatile struct PwmChannelRegs *base;
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} PwmHardware;
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pwm_hwreg_t pwm_hw_getPeriod(Pwm *ctx);
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void pwm_hw_setFrequency(struct Pwm *ctx, pwm_freq_t freq);
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void pwm_hw_setDuty(Pwm *ctx, pwm_hwreg_t duty);
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void pwm_hw_init(struct Pwm *ctx, unsigned ch);
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#endif
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#endif /* DRV_ADC_AT91_H */
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