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/*
ChibiOS - Copyright (C) 2013-2015 Fabio Utzig
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* @file KL2x/pal_lld.h
* @brief Kinetis KL2x PAL subsystem low level driver header.
*
* @addtogroup PAL
* @{
*/
#ifndef _PAL_LLD_H_
#define _PAL_LLD_H_
#if HAL_USE_PAL || defined(__DOXYGEN__)
/*===========================================================================*/
/* Unsupported modes and specific modes */
/*===========================================================================*/
#undef PAL_MODE_OUTPUT_OPENDRAIN
#define PAL_MODE_ALTERNATIVE_1 0x10
#define PAL_MODE_ALTERNATIVE_2 0x11
#define PAL_MODE_ALTERNATIVE_3 0x12
#define PAL_MODE_ALTERNATIVE_4 0x13
#define PAL_MODE_ALTERNATIVE_5 0x14
#define PAL_MODE_ALTERNATIVE_6 0x15
#define PAL_MODE_ALTERNATIVE_7 0x16
/*===========================================================================*/
/* I/O Ports Types and constants. */
/*===========================================================================*/
#define TOTAL_PORTS 5
#define PADS_PER_PORT 32
/**
* @brief Digital I/O port sized unsigned type.
*/
typedef uint32_t ioportmask_t;
/**
* @brief Digital I/O modes.
*/
typedef uint8_t iomode_t;
/**
* @brief Port Identifier.
* @details This type can be a scalar or some kind of pointer, do not make
* any assumption about it, use the provided macros when populating
* variables of this type.
*/
typedef GPIO_TypeDef * ioportid_t;
typedef struct {
ioportid_t port;
iomode_t pads[PADS_PER_PORT];
} PortConfig;
/**
* @brief Generic I/O ports 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 Implementations may extend this structure to contain more,
* architecture dependent, fields.
*/
typedef struct
{
PortConfig ports[TOTAL_PORTS];
} 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)
/*===========================================================================*/
/* I/O Ports Identifiers. */
/*===========================================================================*/
/**
* @brief First I/O port identifier.
* @details Low level drivers can define multiple ports, it is suggested to
* use this naming convention.
*/
#define IOPORT1 GPIOA
#define IOPORT2 GPIOB
#define IOPORT3 GPIOC
#define IOPORT4 GPIOD
#define IOPORT5 GPIOE
/*===========================================================================*/
/* 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
*
* @notapi
*/
#define pal_lld_init(config) _pal_lld_init(config)
/**
* @brief Reads the physical I/O port states.
*
* @param[in] port port identifier
* @return The port bits.
*
* @notapi
*/
#define pal_lld_readport(port) \
(port)->PDIR
/**
* @brief Reads the output latch.
* @details The purpose of this function is to read back the latched output
* value.
*
* @param[in] port port identifier
* @return The latched logical states.
*
* @notapi
*/
#define pal_lld_readlatch(port) 0
/**
* @brief Writes a bits mask on a I/O port.
*
* @param[in] port port identifier
* @param[in] bits bits to be written on the specified port
*
* @notapi
*/
#define pal_lld_writeport(port, bits)
/**
* @brief Sets a bits mask on a I/O port.
* @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
*
* @notapi
*/
#define pal_lld_setport(port, bits)
/**
* @brief Clears a bits mask on a I/O port.
* @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
*
* @notapi
*/
#define pal_lld_clearport(port, bits)
/**
* @brief Toggles a bits mask on a I/O port.
* @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 XORed on the specified port
*
* @notapi
*/
#define pal_lld_toggleport(port, bits)
/**
* @brief Reads a group of bits.
* @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.
*
* @notapi
*/
#define pal_lld_readgroup(port, mask, offset) 0
/**
* @brief Writes a group of bits.
* @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.
*
* @notapi
*/
#define pal_lld_writegroup(port, mask, offset, bits) (void)bits
/**
* @brief Pads group mode setup.
* @details This function programs a pads group belonging to the same port
* with the specified mode.
* @note Programming an unknown or unsupported mode is silently ignored.
*
* @param[in] port port identifier
* @param[in] mask group mask
* @param[in] offset group bit offset within the port
* @param[in] mode group mode
*
* @notapi
*/
#define pal_lld_setgroupmode(port, mask, offset, mode) \
_pal_lld_setgroupmode(port, mask << offset, mode)
/**
* @brief Sets a pad logical state to @p PAL_HIGH.
* @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
*
* @notapi
*/
#define pal_lld_setpad(port, pad) (port)->PSOR |= ((uint32_t) 1 << (pad))
/**
* @brief Clears a pad logical state to @p PAL_LOW.
* @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
*
* @notapi
*/
#define pal_lld_clearpad(port, pad) (port)->PCOR |= ((uint32_t) 1 << (pad))
/**
* @brief Toggles a pad logical state.
* @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
*
* @notapi
*/
#define pal_lld_togglepad(port, pad) (port)->PTOR |= ((uint32_t) 1 << (pad))
/**
* @brief Pad mode setup.
* @details This function programs a pad with the specified mode.
* @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.
* @note Programming an unknown or unsupported mode is silently ignored.
*
* @param[in] port port identifier
* @param[in] pad pad number within the port
* @param[in] mode pad mode
*
* @notapi
*/
#define pal_lld_setpadmode(port, pad, mode) \
_pal_lld_setpadmode(port, pad, mode)
#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,
iomode_t mode);
void pal_lld_setpadmode(ioportid_t port,
uint8_t pad,
iomode_t mode);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_PAL */
#endif /* _PAL_LLD_H_ */
/** @} */
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