310 lines
11 KiB
C
310 lines
11 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 LPC13xx/pal_lld.h
|
||
|
|
* @brief LPC13xx GPIO low level driver header.
|
||
|
|
*
|
||
|
|
* @addtogroup LPC13xx_PAL
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _PAL_LLD_H_
|
||
|
|
#define _PAL_LLD_H_
|
||
|
|
|
||
|
|
#if CH_HAL_USE_PAL || defined(__DOXYGEN__)
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Unsupported modes and specific modes */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
#undef PAL_MODE_INPUT_PULLUP
|
||
|
|
#undef PAL_MODE_INPUT_PULLDOWN
|
||
|
|
#undef PAL_MODE_INPUT_ANALOG
|
||
|
|
#undef PAL_MODE_OUTPUT_OPENDRAIN
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* I/O Ports Types and constants. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief GPIO port setup info.
|
||
|
|
*/
|
||
|
|
typedef struct {
|
||
|
|
/** Initial value for FIO_PIN register.*/
|
||
|
|
uint32_t data;
|
||
|
|
/** Initial value for FIO_DIR register.*/
|
||
|
|
uint32_t dir;
|
||
|
|
} LPC13xx_gpio_setup_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief GPIO static initializer.
|
||
|
|
* @details An instance of this structure must be passed to @p palInit() at
|
||
|
|
* system startup time in order to initialized the digital I/O
|
||
|
|
* subsystem. This represents only the initial setup, specific pads
|
||
|
|
* or whole ports can be reprogrammed at later time.
|
||
|
|
* @note The @p IOCON block is not configured, initially all pins have
|
||
|
|
* enabled pullups and are programmed as GPIO. It is responsibility
|
||
|
|
* of the various drivers to reprogram the pins in the proper mode.
|
||
|
|
* Pins that are not handled by any driver may be programmed in
|
||
|
|
* @p board.c.
|
||
|
|
*/
|
||
|
|
typedef struct {
|
||
|
|
/** @brief GPIO 0 setup data.*/
|
||
|
|
LPC13xx_gpio_setup_t P0;
|
||
|
|
/** @brief GPIO 1 setup data.*/
|
||
|
|
LPC13xx_gpio_setup_t P1;
|
||
|
|
/** @brief GPIO 2 setup data.*/
|
||
|
|
LPC13xx_gpio_setup_t P2;
|
||
|
|
/** @brief GPIO 3 setup data.*/
|
||
|
|
LPC13xx_gpio_setup_t P3;
|
||
|
|
} PALConfig;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Width, in bits, of an I/O port.
|
||
|
|
*/
|
||
|
|
#define PAL_IOPORTS_WIDTH 32
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Whole port mask.
|
||
|
|
* @brief This macro specifies all the valid bits into a port.
|
||
|
|
*/
|
||
|
|
#define PAL_WHOLE_PORT ((ioportmask_t)0xFFFFFFFF)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Digital I/O port sized unsigned type.
|
||
|
|
*/
|
||
|
|
typedef uint32_t ioportmask_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Port Identifier.
|
||
|
|
*/
|
||
|
|
typedef LPC_GPIO_TypeDef *ioportid_t;
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* I/O Ports Identifiers. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief GPIO0 port identifier.
|
||
|
|
*/
|
||
|
|
#define IOPORT1 LPC_GPIO0
|
||
|
|
#define GPIO0 LPC_GPIO0
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief GPIO1 port identifier.
|
||
|
|
*/
|
||
|
|
#define IOPORT2 LPC_GPIO1
|
||
|
|
#define GPIO1 LPC_GPIO1
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief GPIO2 port identifier.
|
||
|
|
*/
|
||
|
|
#define IOPORT3 LPC_GPIO2
|
||
|
|
#define GPIO2 LPC_GPIO2
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief GPIO3 port identifier.
|
||
|
|
*/
|
||
|
|
#define IOPORT4 LPC_GPIO3
|
||
|
|
#define GPIO3 LPC_GPIO3
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Implementation, some of the following macros could be implemented as */
|
||
|
|
/* functions, if so please put them in pal_lld.c. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Low level PAL subsystem initialization.
|
||
|
|
*
|
||
|
|
* @param[in] config architecture-dependent ports configuration
|
||
|
|
*/
|
||
|
|
#define pal_lld_init(config) _pal_lld_init(config)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Reads the physical I/O port states.
|
||
|
|
* @note This function is not meant to be invoked directly by the
|
||
|
|
* application code.
|
||
|
|
*
|
||
|
|
* @param[in] port port identifier
|
||
|
|
* @return The port bits.
|
||
|
|
*/
|
||
|
|
#define pal_lld_readport(port) ((port)->DATA)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Reads the output latch.
|
||
|
|
* @details The purpose of this function is to read back the latched output
|
||
|
|
* value.
|
||
|
|
* @note This function is not meant to be invoked directly by the
|
||
|
|
* application code.
|
||
|
|
*
|
||
|
|
* @param[in] port port identifier
|
||
|
|
* @return The latched logical states.
|
||
|
|
*/
|
||
|
|
#define pal_lld_readlatch(port) ((port)->DATA)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Writes a bits mask on a I/O port.
|
||
|
|
* @note This function is not meant to be invoked directly by the
|
||
|
|
* application code.
|
||
|
|
*
|
||
|
|
* @param[in] port port identifier
|
||
|
|
* @param[in] bits bits to be written on the specified port
|
||
|
|
*/
|
||
|
|
#define pal_lld_writeport(port, bits) ((port)->DATA = (bits))
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Sets a bits mask on a I/O port.
|
||
|
|
* @note This function is not meant to be invoked directly by the
|
||
|
|
* application code.
|
||
|
|
* @note The @ref PAL provides a default software implementation of this
|
||
|
|
* functionality, implement this function if can optimize it by using
|
||
|
|
* special hardware functionalities or special coding.
|
||
|
|
*
|
||
|
|
* @param[in] port port identifier
|
||
|
|
* @param[in] bits bits to be ORed on the specified port
|
||
|
|
*/
|
||
|
|
#define pal_lld_setport(port, bits) ((port)->MASKED_ACCESS[bits] = 0xFFFFFFFF)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Clears a bits mask on a I/O port.
|
||
|
|
* @note This function is not meant to be invoked directly by the
|
||
|
|
* application code.
|
||
|
|
* @note The @ref PAL provides a default software implementation of this
|
||
|
|
* functionality, implement this function if can optimize it by using
|
||
|
|
* special hardware functionalities or special coding.
|
||
|
|
*
|
||
|
|
* @param[in] port port identifier
|
||
|
|
* @param[in] bits bits to be cleared on the specified port
|
||
|
|
*/
|
||
|
|
#define pal_lld_clearport(port, bits) ((port)->MASKED_ACCESS[bits] = 0)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Reads a group of bits.
|
||
|
|
* @note This function is not meant to be invoked directly by the
|
||
|
|
* application code.
|
||
|
|
* @note The @ref PAL provides a default software implementation of this
|
||
|
|
* functionality, implement this function if can optimize it by using
|
||
|
|
* special hardware functionalities or special coding.
|
||
|
|
*
|
||
|
|
* @param[in] port port identifier
|
||
|
|
* @param[in] mask group mask
|
||
|
|
* @param[in] offset group bit offset within the port
|
||
|
|
* @return The group logical states.
|
||
|
|
*/
|
||
|
|
#define pal_lld_readgroup(port, mask, offset) \
|
||
|
|
((port)->MASKED_ACCESS[(mask) << (offset)])
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Writes a group of bits.
|
||
|
|
* @note This function is not meant to be invoked directly by the
|
||
|
|
* application code.
|
||
|
|
* @note The @ref PAL provides a default software implementation of this
|
||
|
|
* functionality, implement this function if can optimize it by using
|
||
|
|
* special hardware functionalities or special coding.
|
||
|
|
*
|
||
|
|
* @param[in] port port identifier
|
||
|
|
* @param[in] mask group mask
|
||
|
|
* @param[in] offset group bit offset within the port
|
||
|
|
* @param[in] bits bits to be written. Values exceeding the group width
|
||
|
|
* are masked.
|
||
|
|
*/
|
||
|
|
#define pal_lld_writegroup(port, mask, offset, bits) \
|
||
|
|
((port)->MASKED_ACCESS[(mask) << (offset)] = (bits))
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Pads group mode setup.
|
||
|
|
* @details This function programs a pads group belonging to the same port
|
||
|
|
* with the specified mode.
|
||
|
|
* @note This function is not meant to be invoked directly by the
|
||
|
|
* application code.
|
||
|
|
* @note Programming an unknown or unsupported mode is silently ignored.
|
||
|
|
*
|
||
|
|
* @param[in] port port identifier
|
||
|
|
* @param[in] mask group mask
|
||
|
|
* @param[in] mode group mode
|
||
|
|
*/
|
||
|
|
#define pal_lld_setgroupmode(port, mask, mode) \
|
||
|
|
_pal_lld_setgroupmode(port, mask, mode)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Writes a logical state on an output pad.
|
||
|
|
* @note This function is not meant to be invoked directly by the
|
||
|
|
* application code.
|
||
|
|
* @note The @ref PAL provides a default software implementation of this
|
||
|
|
* functionality, implement this function if can optimize it by using
|
||
|
|
* special hardware functionalities or special coding.
|
||
|
|
*
|
||
|
|
* @param[in] port port identifier
|
||
|
|
* @param[in] pad pad number within the port
|
||
|
|
* @param[out] bit logical value, the value must be @p PAL_LOW or
|
||
|
|
* @p PAL_HIGH
|
||
|
|
*/
|
||
|
|
#define pal_lld_writepad(port, pad, bit) \
|
||
|
|
((port)->MASKED_ACCESS[(mask) << (pad)] = (bit) << (pad))
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Sets a pad logical state to @p PAL_HIGH.
|
||
|
|
* @note This function is not meant to be invoked directly by the
|
||
|
|
* application code.
|
||
|
|
* @note The @ref PAL provides a default software implementation of this
|
||
|
|
* functionality, implement this function if can optimize it by using
|
||
|
|
* special hardware functionalities or special coding.
|
||
|
|
*
|
||
|
|
* @param[in] port port identifier
|
||
|
|
* @param[in] pad pad number within the port
|
||
|
|
*/
|
||
|
|
#define pal_lld_setpad(port, pad) \
|
||
|
|
((port)->MASKED_ACCESS[1 << (pad)] = 1 << (pad))
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Clears a pad logical state to @p PAL_LOW.
|
||
|
|
* @note This function is not meant to be invoked directly by the
|
||
|
|
* application code.
|
||
|
|
* @note The @ref PAL provides a default software implementation of this
|
||
|
|
* functionality, implement this function if can optimize it by using
|
||
|
|
* special hardware functionalities or special coding.
|
||
|
|
*
|
||
|
|
* @param[in] port port identifier
|
||
|
|
* @param[in] pad pad number within the port
|
||
|
|
*/
|
||
|
|
#define pal_lld_clearpad(port, pad) \
|
||
|
|
((port)->MASKED_ACCESS[1 << (pad)] = 0)
|
||
|
|
|
||
|
|
#if !defined(__DOXYGEN__)
|
||
|
|
extern const PALConfig pal_default_config;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
void _pal_lld_init(const PALConfig *config);
|
||
|
|
void _pal_lld_setgroupmode(ioportid_t port,
|
||
|
|
ioportmask_t mask,
|
||
|
|
uint_fast8_t mode);
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* CH_HAL_USE_PAL */
|
||
|
|
|
||
|
|
#endif /* _PAL_LLD_H_ */
|
||
|
|
|
||
|
|
/** @} */
|