mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-10-01 01:26:06 -04:00
204 lines
6.7 KiB
C
Executable File
204 lines
6.7 KiB
C
Executable File
/*
|
|
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
|
|
2011,2012,2013 Giovanni Di Sirio.
|
|
|
|
This file is part of ChibiOS/RT.
|
|
|
|
ChibiOS/RT 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
ChibiOS/RT 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, see <http://www.gnu.org/licenses/>.
|
|
|
|
---
|
|
|
|
A special exception to the GPL can be applied should you wish to distribute
|
|
a combined work that includes ChibiOS/RT, without being obliged to provide
|
|
the source code for any proprietary components. See the file exception.txt
|
|
for full details of how and when the exception can be applied.
|
|
*/
|
|
|
|
/**
|
|
* @file icu.h
|
|
* @brief ICU Driver macros and structures.
|
|
*
|
|
* @addtogroup ICU
|
|
* @{
|
|
*/
|
|
|
|
#ifndef _ICU_H_
|
|
#define _ICU_H_
|
|
|
|
#if HAL_USE_ICU || defined(__DOXYGEN__)
|
|
|
|
/*===========================================================================*/
|
|
/* Driver constants. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver pre-compile time settings. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Derived constants and error checks. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver data structures and types. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Driver state machine possible states.
|
|
*/
|
|
typedef enum {
|
|
ICU_UNINIT = 0, /**< Not initialized. */
|
|
ICU_STOP = 1, /**< Stopped. */
|
|
ICU_READY = 2, /**< Ready. */
|
|
ICU_WAITING = 3, /**< Waiting first edge. */
|
|
ICU_ACTIVE = 4, /**< Active cycle phase. */
|
|
ICU_IDLE = 5, /**< Idle cycle phase. */
|
|
} icustate_t;
|
|
|
|
/**
|
|
* @brief Type of a structure representing an ICU driver.
|
|
*/
|
|
typedef struct ICUDriver ICUDriver;
|
|
|
|
/**
|
|
* @brief ICU notification callback type.
|
|
*
|
|
* @param[in] icup pointer to a @p ICUDriver object
|
|
*/
|
|
typedef void (*icucallback_t)(ICUDriver *icup);
|
|
|
|
#include "icu_lld.h"
|
|
|
|
/*===========================================================================*/
|
|
/* Driver macros. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @name Macro Functions
|
|
* @{
|
|
*/
|
|
/**
|
|
* @brief Enables the input capture.
|
|
*
|
|
* @param[in] icup pointer to the @p ICUDriver object
|
|
*
|
|
* @iclass
|
|
*/
|
|
#define icuEnableI(icup) icu_lld_enable(icup)
|
|
|
|
/**
|
|
* @brief Disables the input capture.
|
|
*
|
|
* @param[in] icup pointer to the @p ICUDriver object
|
|
*
|
|
* @iclass
|
|
*/
|
|
#define icuDisableI(icup) icu_lld_disable(icup)
|
|
|
|
/**
|
|
* @brief Returns the width of the latest pulse.
|
|
* @details The pulse width is defined as number of ticks between the start
|
|
* edge and the stop edge.
|
|
* @note This function is meant to be invoked from the width capture
|
|
* callback only.
|
|
*
|
|
* @param[in] icup pointer to the @p ICUDriver object
|
|
* @return The number of ticks.
|
|
*
|
|
* @special
|
|
*/
|
|
#define icuGetWidth(icup) icu_lld_get_width(icup)
|
|
|
|
/**
|
|
* @brief Returns the width of the latest cycle.
|
|
* @details The cycle width is defined as number of ticks between a start
|
|
* edge and the next start edge.
|
|
* @note This function is meant to be invoked from the width capture
|
|
* callback only.
|
|
*
|
|
* @param[in] icup pointer to the @p ICUDriver object
|
|
* @return The number of ticks.
|
|
*
|
|
* @special
|
|
*/
|
|
#define icuGetPeriod(icup) icu_lld_get_period(icup)
|
|
/** @} */
|
|
|
|
/**
|
|
* @name Low Level driver helper macros
|
|
* @{
|
|
*/
|
|
/**
|
|
* @brief Common ISR code, ICU width event.
|
|
*
|
|
* @param[in] icup pointer to the @p ICUDriver object
|
|
*
|
|
* @notapi
|
|
*/
|
|
#define _icu_isr_invoke_width_cb(icup) { \
|
|
if ((icup)->state != ICU_WAITING) { \
|
|
(icup)->state = ICU_IDLE; \
|
|
(icup)->config->width_cb(icup); \
|
|
} \
|
|
}
|
|
|
|
/**
|
|
* @brief Common ISR code, ICU period event.
|
|
*
|
|
* @param[in] icup pointer to the @p ICUDriver object
|
|
*
|
|
* @notapi
|
|
*/
|
|
#define _icu_isr_invoke_period_cb(icup) { \
|
|
icustate_t previous_state = (icup)->state; \
|
|
(icup)->state = ICU_ACTIVE; \
|
|
if (previous_state != ICU_WAITING) \
|
|
(icup)->config->period_cb(icup); \
|
|
}
|
|
|
|
/**
|
|
* @brief Common ISR code, ICU timer overflow event.
|
|
*
|
|
* @param[in] icup pointer to the @p ICUDriver object
|
|
*
|
|
* @notapi
|
|
*/
|
|
#define _icu_isr_invoke_overflow_cb(icup) { \
|
|
(icup)->config->overflow_cb(icup); \
|
|
}
|
|
/** @} */
|
|
|
|
/*===========================================================================*/
|
|
/* External declarations. */
|
|
/*===========================================================================*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
void icuInit(void);
|
|
void icuObjectInit(ICUDriver *icup);
|
|
void icuStart(ICUDriver *icup, const ICUConfig *config);
|
|
void icuStop(ICUDriver *icup);
|
|
void icuEnable(ICUDriver *icup);
|
|
void icuDisable(ICUDriver *icup);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* HAL_USE_ICU */
|
|
|
|
#endif /* _ICU_H_ */
|
|
|
|
/** @} */
|