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29 * Copyright 2008 Develer S.r.l. (http://www.develer.com/)
34 * \brief PWM hardware-specific definition
37 * \author Daniele Basile <asterix@develer.com>
40 #ifndef DRV_PWM_AT91_H
41 #define DRV_PWM_AT91_H
43 #include <cfg/compiler.h>
44 #include <cfg/macros.h>
46 #include "cfg/cfg_pwm.h"
50 #if CFG_PWM_ENABLE_OLD_API
52 #include "hw/pwm_map.h"
55 * Type definition for pwm period.
57 typedef uint16_t pwm_period_t;
60 * Structur definition for pwm driver.
62 typedef struct PwmChannel
64 bool duty_zero; ///< True if duty cyle is zero, false otherwise.
65 bool pol; ///< PWM polarty flag.
66 int pwm_pin; ///< PWM pin.
67 reg32_t *mode_reg; ///< PWM mode register.
68 reg32_t *duty_reg; ///< PWM duty cycle register.
69 reg32_t *period_reg; ///< PWM periodic register.
70 reg32_t *update_reg; ///< Update setting register for PWM.
75 void pwm_hw_init(void);
76 void pwm_hw_setFrequency(PwmDev dev, uint32_t freq);
77 void pwm_hw_setDutyUnlock(PwmDev dev, uint16_t duty);
78 void pwm_hw_disable(PwmDev dev);
79 void pwm_hw_enable(PwmDev dev);
80 void pwm_hw_setPolarity(PwmDev dev, bool pol);
81 pwm_period_t pwm_hw_getPeriod(PwmDev dev);
86 typedef uint16_t pwm_hwreg_t;
88 struct PwmChannelRegs; //fwd decl
90 typedef struct PwmHardware
92 uint32_t pwm_pin; ///< PWM pin.
93 volatile struct PwmChannelRegs *base;
96 pwm_hwreg_t pwm_hw_getPeriod(Pwm *ctx);
97 void pwm_hw_setFrequency(struct Pwm *ctx, pwm_freq_t freq);
98 void pwm_hw_setDuty(Pwm *ctx, pwm_hwreg_t duty);
99 void pwm_hw_init(struct Pwm *ctx, unsigned ch);
103 #endif /* DRV_ADC_AT91_H */