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Add PAL line support in PAL lld for AVR port. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10580 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
Theodore Ateba 2017-09-13 21:22:38 +00:00
parent dab0220e94
commit 1fb6dc3e55
2 changed files with 199 additions and 0 deletions
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86
os/hal/ports/AVR/MEGA/LLD/GPIOv1/hal_pal_lld.c
View File

@ -29,6 +29,10 @@
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/**
* @brief Event records for the 16 GPIO EXTI channels.
*/
palevent_t _pal_events[16];
/*===========================================================================*/
/* Driver local variables and types. */
@ -151,6 +155,88 @@ void _pal_lld_setgroupmode(ioportid_t port,
}
}
/**
* @brief Pad event enable.
* @details This function programs an event callback in the specified mode.
* @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 event mode
* @param[in] callback event callback function
* @param[in] arg callback argument
*
* @notapi
*/
void _pal_lld_enablepadevent(ioportid_t port,
iopadid_t pad,
ioeventmode_t mode,
palcallback_t callback,
void *arg) {
(void)port;
(void)pad;
(void)mode;
(void)callback;
(void)arg;
/* TODO: Implement the interruption here. */
/*
#if (port == IOPORT4)
#elif (port == IOPORT5)
#else
#error The selected port dont have an EXT INTx pin.
*/
//}
}
/**
* @brief Make a line identifier with a given port and pad identifiers.
*
* @param[in] port the port identifier
* @param[in] pad the pad identifier
*
* @return line the builded line
*
* @notapi
*/
ioline_t _pal_lld_setlineid(ioportid_t port, uint8_t pad) {
ioline_t line;
line.port = port;
line.pad = pad;
return line;
}
/**
* @brief Get a port identifier from a line identifier.
*
* @param[in] line the line identifier
*
* @return port the port of the corresponding line
*
* @notapi
*/
ioportid_t _pal_lld_getportfromline(ioline_t line) {
return line.port;
}
/**
* @brief Get a pad identifier from a line identifier.
*
* @param[in] line the line identifier
*
* @return pad the pad of the corresponding line
*
* @notapi
*/
uint8_t _pal_lld_getpadfromline(ioline_t line) {
return line.pad;
}
#endif /* HAL_USE_PAL */
/** @} */

113
os/hal/ports/AVR/MEGA/LLD/GPIOv1/hal_pal_lld.h
View File

@ -51,6 +51,35 @@
*/
#define PAL_WHOLE_PORT ((ioportmask_t)0xFF)
/**
* @name Line handling macros
* @{
*/
/**
* @brief Forms a line identifier.
* @details A port/pad pair are encoded into an @p ioline_t type. The encoding
* of this type is platform-dependent.
* @note In this driver the pad number and the port identifier are
* encoded in a structure of type ioline_t.
*/
#define PAL_LINE(port, pad) _pal_lld_setlineid(port, pad)
/**
* @brief Decodes a port identifier from a line identifier.
*/
#define PAL_PORT(line) _pal_lld_getportfromline(line)
/**
* @brief Decodes a pad identifier from a line identifier.
*/
#define PAL_PAD(line) _pal_lld_getpadfromline(line)
/**
* @brief Value identifying an invalid line.
*/
#define PAL_NOLINE 0U
/** @} */
/**
* @brief AVR setup registers.
*/
@ -132,6 +161,24 @@ typedef uint8_t iomode_t;
*/
typedef volatile avr_gpio_registers_t * ioportid_t;
/**
* @brief Type of an pad identifier.
*/
typedef uint8_t iopadid_t;
/**
* @brief Type of an I/O line.
*/
typedef struct {
ioportid_t port; /* Line port identifier. */
iopadid_t pad; /* Line pad identifier. */
}ioline_t;
/**
* @brief Type of an event mode.
*/
typedef uint8_t ioeventmode_t;
/*===========================================================================*/
/* I/O Ports Identifiers. */
/*===========================================================================*/
@ -311,6 +358,60 @@ typedef volatile avr_gpio_registers_t * ioportid_t;
#define pal_lld_clearpad(port, pad) \
port->out &= ~_BV(pad)
/**
* @brief Pad event enable.
* @details This function programs an event callback in the specified mode.
* @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 event mode
* @param[in] callback event callback function
* @param[in] arg callback argument
*
* @notapi
*/
#define pal_lld_enablepadevent(port, pad, mode, callback, arg) \
_pal_lld_enablepadevent(port, pad, mode, callback, arg)
/**
* @brief Pad event disable.
* @details This function disables previously programmed event callbacks.
*
* @param[in] port port identifier
* @param[in] pad pad number within the port
*
* @notapi
*/
#define pal_lld_disablepadevent(port, pad) \
_pal_lld_disablepadevent(port, pad)
/**
* @brief Returns a PAL event structure associated to a pad.
*
* @param[in] port port identifier
* @param[in] pad pad number within the port
*
* @notapi
*/
#define pal_lld_get_pad_event(port, pad) \
&_pal_events[pad]; (void)(port)
/**
* @brief Returns a PAL event structure associated to a line.
*
* @param[in] line line identifier
*
* @notapi
*/
#define pal_lld_get_line_event(line) \
&_pal_events[PAL_PAD(line)]
#if !defined(__DOXYGEN__)
extern const PALConfig pal_default_config;
extern palevent_t _pal_events[16];
#endif
extern ROMCONST PALConfig pal_default_config;
#ifdef __cplusplus
@ -320,6 +421,18 @@ extern "C" {
void _pal_lld_setgroupmode(ioportid_t port,
ioportmask_t mask,
iomode_t mode);
void _pal_lld_enablepadevent(ioportid_t port,
iopadid_t pad,
ioeventmode_t mode,
palcallback_t callback,
void *arg);
void _pal_lld_disablepadevent(ioportid_t port, iopadid_t pad);
ioline_t _pal_lld_setlineid(ioportid_t port, uint8_t pad);
ioportid_t _pal_lld_getportfromline(ioline_t line);
uint8_t _pal_lld_getpadfromline(ioline_t line);
#ifdef __cplusplus
}
#endif