mirror of
https://github.com/rtlduino/RTL8710AF_GCC.git
synced 2024-11-22 09:14:15 +00:00
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/*
|
|
* Routines to access hardware
|
|
*
|
|
* Copyright (c) 2013 Realtek Semiconductor Corp.
|
|
*
|
|
* This module is a confidential and proprietary property of RealTek and
|
|
* possession or use of this module requires written permission of RealTek.
|
|
*/
|
|
|
|
#ifndef _HAL_PWM_H_
|
|
#define _HAL_PWM_H_
|
|
|
|
#define MAX_PWM_CTRL_PIN 4
|
|
// the minimum tick time for G-timer is 61 us (clock source = 32768Hz, reload value=1 and reload takes extra 1T)
|
|
//#define GTIMER_TICK_US 31 // micro-second, 1000000/32768 ~= 30.5
|
|
#define MIN_GTIMER_TIMEOUT 61 // in micro-sec, use this value to set the g-timer to generate tick for PWM. 61=(1000000/32768)*2
|
|
#define PWM_GTIMER_TICK_TIME 61 // in micro-sec, use this value to set the g-timer to generate tick for PWM. 61=(1000000/32768)*2
|
|
|
|
typedef struct _HAL_PWM_ADAPTER_ {
|
|
u8 pwm_id; // the PWM ID, 0~3
|
|
u8 sel; // PWM Pin selection, 0~3
|
|
u8 gtimer_id; // using G-Timer ID, there are 7 G-timer, but we prefer to use timer 3~6
|
|
u8 enable; // is enabled
|
|
// u32 timer_value; // the G-Timer auto-reload value, source clock is 32768Hz, reload will takes extra 1 tick. To set the time of a tick of PWM
|
|
u32 tick_time; // the tick time for the G-timer
|
|
u32 period; // the period of a PWM control cycle, in PWM tick
|
|
u32 pulsewidth; // the pulse width in a period of a PWM control cycle, in PWM tick. To control the ratio
|
|
// float duty_ratio; // the dyty ratio = pulswidth/period
|
|
}HAL_PWM_ADAPTER, *PHAL_PWM_ADAPTER;
|
|
|
|
|
|
extern HAL_Status
|
|
HAL_Pwm_Init(
|
|
HAL_PWM_ADAPTER *pPwmAdapt,
|
|
u32 pwm_id,
|
|
u32 sel
|
|
);
|
|
|
|
extern void
|
|
HAL_Pwm_Enable(
|
|
HAL_PWM_ADAPTER *pPwmAdapt
|
|
);
|
|
|
|
extern void
|
|
HAL_Pwm_Disable(
|
|
HAL_PWM_ADAPTER *pPwmAdapt
|
|
);
|
|
|
|
extern void
|
|
HAL_Pwm_SetDuty(
|
|
HAL_PWM_ADAPTER *pPwmAdapt,
|
|
u32 period,
|
|
u32 pulse_width
|
|
);
|
|
|
|
|
|
#endif
|
|
|