4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
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18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
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24 * file does not by itself cause the resulting executable to be covered by
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29 * Copyright 2005 Develer S.r.l. (http://www.develer.com/)
33 * \brief Pulse Width Modulation (PWM) driver.
35 * \author Francesco Sacchi <batt@develer.com>
36 * \author Daniele Basile <asterix@develer.com>
38 * $WIZ$ module_name = "pwm"
39 * $WIZ$ module_configuration = "bertos/cfg/cfg_pwm.h"
40 * $WIZ$ module_hw = "bertos/hw/pwm_map.h"
41 * $WIZ$ module_supports = "not avr and not cm3"
47 #include "hw/pwm_map.h"
51 #include CPU_HEADER(pwm)
53 #include <cfg/compiler.h>
55 #define PWM_MAX_DUTY ((pwm_duty_t)0xFFFF)
56 #define PWM_MAX_PERIOD 0xFFFF
57 #define PWM_MAX_PERIOD_LOG2 16
62 typedef uint16_t pwm_duty_t;
63 typedef uint32_t pwm_freq_t;
68 * Set PWM polarity of pwm \p dev.
70 INLINE void pwm_setPolarity(PwmDev dev, bool pol)
72 pwm_hw_setPolarity(dev, pol);
75 void pwm_setDuty(PwmDev dev, pwm_duty_t duty);
76 void pwm_setFrequency(PwmDev dev, pwm_freq_t freq);
77 void pwm_setPolarity(PwmDev dev, bool pol);
78 void pwm_enable(PwmDev dev, bool state);
82 * Test function prototypes.
84 * See pwm_test.c for implemntation of these functions.
86 void pwm_testRun(void);
87 int pwm_testSetup(void);
88 /* For backward compatibility */
89 #define pwm_testSetUp() pwm_testSetup()
90 int pwm_testTearDown(void);
92 #endif /* DRV_PWM_H */