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

2 files changed, 199 insertions, 0 deletions

diff --git a/os/hal/ports/AVR/MEGA/LLD/GPIOv1/hal_pal_lld.c b/os/hal/ports/AVR/MEGA/LLD/GPIOv1/hal_pal_lld.c
index bf764c108..491fc58d4 100644
--- a/os/hal/ports/AVR/MEGA/LLD/GPIOv1/hal_pal_lld.c
+++ b/os/hal/ports/AVR/MEGA/LLD/GPIOv1/hal_pal_lld.c
@@ -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 */

 

 /** @} */

diff --git a/os/hal/ports/AVR/MEGA/LLD/GPIOv1/hal_pal_lld.h b/os/hal/ports/AVR/MEGA/LLD/GPIOv1/hal_pal_lld.h
index 4b23b6db4..c174a260c 100644
--- a/os/hal/ports/AVR/MEGA/LLD/GPIOv1/hal_pal_lld.h
+++ b/os/hal/ports/AVR/MEGA/LLD/GPIOv1/hal_pal_lld.h
@@ -52,6 +52,35 @@
 #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.

  */

 typedef struct {

@@ -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