224 lines
6.6 KiB
C
224 lines
6.6 KiB
C
/*
|
|
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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/>.
|
|
*/
|
|
|
|
/**
|
|
* @file LPC11xx/gpt_lld.h
|
|
* @brief LPC11xx GPT subsystem low level driver header.
|
|
*
|
|
* @addtogroup GPT
|
|
* @{
|
|
*/
|
|
|
|
#ifndef _GPT_LLD_H_
|
|
#define _GPT_LLD_H_
|
|
|
|
#if HAL_USE_GPT || defined(__DOXYGEN__)
|
|
|
|
/*===========================================================================*/
|
|
/* Driver constants. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver pre-compile time settings. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief GPT1 driver enable switch.
|
|
* @details If set to @p TRUE the support for GPT1 is included.
|
|
* @note The default is @p TRUE.
|
|
*/
|
|
#if !defined(LPC11xx_GPT_USE_CT16B0) || defined(__DOXYGEN__)
|
|
#define LPC11xx_GPT_USE_CT16B0 TRUE
|
|
#endif
|
|
|
|
/**
|
|
* @brief GPT2 driver enable switch.
|
|
* @details If set to @p TRUE the support for GPT2 is included.
|
|
* @note The default is @p TRUE.
|
|
*/
|
|
#if !defined(LPC11xx_GPT_USE_CT16B1) || defined(__DOXYGEN__)
|
|
#define LPC11xx_GPT_USE_CT16B1 TRUE
|
|
#endif
|
|
|
|
/**
|
|
* @brief GPT3 driver enable switch.
|
|
* @details If set to @p TRUE the support for GPT3 is included.
|
|
* @note The default is @p TRUE.
|
|
*/
|
|
#if !defined(LPC11xx_GPT_USE_CT32B0) || defined(__DOXYGEN__)
|
|
#define LPC11xx_GPT_USE_CT32B0 TRUE
|
|
#endif
|
|
|
|
/**
|
|
* @brief GPT4 driver enable switch.
|
|
* @details If set to @p TRUE the support for GPT4 is included.
|
|
* @note The default is @p TRUE.
|
|
*/
|
|
#if !defined(LPC11xx_GPT_USE_CT32B1) || defined(__DOXYGEN__)
|
|
#define LPC11xx_GPT_USE_CT32B1 TRUE
|
|
#endif
|
|
|
|
/**
|
|
* @brief GPT1 interrupt priority level setting.
|
|
*/
|
|
#if !defined(LPC11xx_GPT_CT16B0_IRQ_PRIORITY) || defined(__DOXYGEN__)
|
|
#define LPC11xx_GPT_CT16B0_IRQ_PRIORITY 2
|
|
#endif
|
|
|
|
/**
|
|
* @brief GPT2 interrupt priority level setting.
|
|
*/
|
|
#if !defined(LPC11xx_GPT_CT16B1_IRQ_PRIORITY) || defined(__DOXYGEN__)
|
|
#define LPC11xx_GPT_CT16B1_IRQ_PRIORITY 2
|
|
#endif
|
|
|
|
/**
|
|
* @brief GPT3 interrupt priority level setting.
|
|
*/
|
|
#if !defined(LPC11xx_GPT_CT32B0_IRQ_PRIORITY) || defined(__DOXYGEN__)
|
|
#define LPC11xx_GPT_CT32B0_IRQ_PRIORITY 2
|
|
#endif
|
|
|
|
/**
|
|
* @brief GPT4 interrupt priority level setting.
|
|
*/
|
|
#if !defined(LPC11xx_GPT_CT32B1_IRQ_PRIORITY) || defined(__DOXYGEN__)
|
|
#define LPC11xx_GPT_CT32B1_IRQ_PRIORITY 2
|
|
#endif
|
|
|
|
/*===========================================================================*/
|
|
/* Derived constants and error checks. */
|
|
/*===========================================================================*/
|
|
|
|
#if !LPC11xx_GPT_USE_CT16B0 && !LPC11xx_GPT_USE_CT16B1 && \
|
|
!LPC11xx_GPT_USE_CT32B0 && !LPC11xx_GPT_USE_CT32B1
|
|
#error "GPT driver activated but no CT peripheral assigned"
|
|
#endif
|
|
|
|
/*===========================================================================*/
|
|
/* Driver data structures and types. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief GPT frequency type.
|
|
*/
|
|
typedef uint32_t gptfreq_t;
|
|
|
|
/**
|
|
* @brief GPT counter type.
|
|
*/
|
|
typedef uint32_t gptcnt_t;
|
|
|
|
/**
|
|
* @brief Type of a structure representing a GPT driver.
|
|
*/
|
|
typedef struct GPTDriver GPTDriver;
|
|
|
|
/**
|
|
* @brief GPT notification callback type.
|
|
*
|
|
* @param[in] gptp pointer to a @p GPTDriver object
|
|
*/
|
|
typedef void (*gptcallback_t)(GPTDriver *gptp);
|
|
|
|
/**
|
|
* @brief Driver configuration structure.
|
|
* @note It could be empty on some architectures.
|
|
*/
|
|
typedef struct {
|
|
/**
|
|
* @brief Timer clock in Hz.
|
|
* @note The low level can use assertions in order to catch invalid
|
|
* frequency specifications.
|
|
*/
|
|
gptfreq_t frequency;
|
|
/**
|
|
* @brief Timer callback pointer.
|
|
* @note This callback is invoked on GPT counter events.
|
|
*/
|
|
gptcallback_t callback;
|
|
/* End of the mandatory fields.*/
|
|
} GPTConfig;
|
|
|
|
/**
|
|
* @brief Structure representing a GPT driver.
|
|
*/
|
|
struct GPTDriver {
|
|
/**
|
|
* @brief Driver state.
|
|
*/
|
|
gptstate_t state;
|
|
/**
|
|
* @brief Current configuration data.
|
|
*/
|
|
const GPTConfig *config;
|
|
/* End of the mandatory fields.*/
|
|
/**
|
|
* @brief Timer base clock.
|
|
*/
|
|
uint32_t clock;
|
|
/**
|
|
* @brief Pointer to the CTxxBy registers block.
|
|
*/
|
|
LPC_TMR_TypeDef *tmr;
|
|
};
|
|
|
|
/*===========================================================================*/
|
|
/* Driver macros. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* External declarations. */
|
|
/*===========================================================================*/
|
|
|
|
#if LPC11xx_GPT_USE_CT16B0 && !defined(__DOXYGEN__)
|
|
extern GPTDriver GPTD1;
|
|
#endif
|
|
|
|
#if LPC11xx_GPT_USE_CT16B1 && !defined(__DOXYGEN__)
|
|
extern GPTDriver GPTD2;
|
|
#endif
|
|
|
|
#if LPC11xx_GPT_USE_CT32B0 && !defined(__DOXYGEN__)
|
|
extern GPTDriver GPTD3;
|
|
#endif
|
|
|
|
#if LPC11xx_GPT_USE_CT32B1 && !defined(__DOXYGEN__)
|
|
extern GPTDriver GPTD4;
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
void gpt_lld_init(void);
|
|
void gpt_lld_start(GPTDriver *gptp);
|
|
void gpt_lld_stop(GPTDriver *gptp);
|
|
void gpt_lld_start_timer(GPTDriver *gptp, gptcnt_t period);
|
|
void gpt_lld_stop_timer(GPTDriver *gptp);
|
|
void gpt_lld_polled_delay(GPTDriver *gptp, gptcnt_t interval);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* HAL_USE_GPT */
|
|
|
|
#endif /* _GPT_LLD_H_ */
|
|
|
|
/** @} */
|