AVR HAL ported from RT-2 (serial/pal/hal tested)

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@6999 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 346 insertions, 0 deletions

diff --git a/os/hal/ports/AVR/pal_lld.h b/os/hal/ports/AVR/pal_lld.h
new file mode 100644
index 000000000..8862452f7
--- /dev/null
+++ b/os/hal/ports/AVR/pal_lld.h
@@ -0,0 +1,346 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006-2014 Giovanni Di Sirio

+

+    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	AVR/pal_lld.h

+ * @brief	AVR GPIO low level driver header.

+ *

+ * @addtogroup PAL

+ * @{

+ */

+

+#ifndef _PAL_LLD_H_

+#define _PAL_LLD_H_

+

+#include "avr_pins.h"

+

+#if HAL_USE_PAL || defined(__DOXYGEN__)

+

+/*===========================================================================*/

+/* Unsupported modes and specific modes                                      */

+/*===========================================================================*/

+

+#undef PAL_MODE_INPUT_PULLDOWN

+#undef PAL_MODE_OUTPUT_OPENDRAIN

+

+/*===========================================================================*/

+/* I/O Ports Types and constants.                                            */

+/*===========================================================================*/

+

+/**

+ * @brief   Width, in bits, of an I/O port.

+ */

+#define PAL_IOPORTS_WIDTH 8

+

+/**

+ * @brief   Whole port mask.

+ * @details This macro specifies all the valid bits into a port.

+ */

+#define PAL_WHOLE_PORT ((ioportmask_t)0xFF)

+

+/**

+ * @brief   AVR setup registers.

+ */

+typedef struct  {

+  uint8_t  out;

+  uint8_t  dir;

+} avr_gpio_setup_t;

+

+/**

+ * @brief   AVR registers block.

+ * @note    On some devices registers do not follow this layout on some

+ *          ports, the ports with abnormal layout cannot be used through

+ *          PAL driver. Example: PORT F on Mega128.

+ */

+typedef struct  {

+  volatile uint8_t  in;

+  volatile uint8_t  dir;

+  volatile uint8_t  out;

+} avr_gpio_registers_t;

+

+/**

+ * @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.

+ */

+typedef struct {

+#if defined(PORTA) || defined(__DOXYGEN__)

+  avr_gpio_setup_t porta;

+#endif

+#if defined(PORTB) || defined(__DOXYGEN__)

+  avr_gpio_setup_t portb;

+#endif

+#if defined(PORTC) || defined(__DOXYGEN__)

+  avr_gpio_setup_t portc;

+#endif

+#if defined(PORTD) || defined(__DOXYGEN__)

+  avr_gpio_setup_t portd;

+#endif

+#if defined(PORTE) || defined(__DOXYGEN__)

+  avr_gpio_setup_t porte;

+#endif

+#if defined(PORTF) || defined(__DOXYGEN__)

+  avr_gpio_setup_t portf;

+#endif

+#if defined(PORTG) || defined(__DOXYGEN__)

+  avr_gpio_setup_t portg;

+#endif

+#if defined(PORTH) || defined(__DOXYGEN__)

+  avr_gpio_setup_t porth;

+#endif

+#if defined(PORTJ) || defined(__DOXYGEN__)

+  avr_gpio_setup_t portj;

+#endif

+#if defined(PORTK) || defined(__DOXYGEN__)

+  avr_gpio_setup_t portk;

+#endif

+#if defined(PORTL) || defined(__DOXYGEN__)

+  avr_gpio_setup_t portl;

+#endif

+} PALConfig;

+

+/**

+ * @brief   Digital I/O port sized unsigned type.

+ */

+typedef uint8_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 avr_gpio_registers_t *ioportid_t;

+

+/*===========================================================================*/

+/* I/O Ports Identifiers.                                                    */

+/*===========================================================================*/

+

+#if defined(PORTA) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port A identifier.

+ */

+#define IOPORT1			((volatile avr_gpio_registers_t *)&PINA)

+#endif

+

+#if defined(PORTB) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port B identifier.

+ */

+#define IOPORT2			((volatile avr_gpio_registers_t *)&PINB)

+#endif

+

+#if defined(PORTC) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port C identifier.

+ */

+#define IOPORT3			((volatile avr_gpio_registers_t *)&PINC)

+#endif

+

+#if defined(PORTD) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port D identifier.

+ */

+#define IOPORT4			((volatile avr_gpio_registers_t *)&PIND)

+#endif

+

+#if defined(PORTE) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port E identifier.

+ */

+#define IOPORT5			((volatile avr_gpio_registers_t *)&PINE)

+#endif

+

+#if defined(PORTF) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port F identifier.

+ */

+#define IOPORT6			((volatile avr_gpio_registers_t *)&PINF)

+#endif

+

+#if defined(PORTG) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port G identifier.

+ */

+#define IOPORT7			((volatile avr_gpio_registers_t *)&PING)

+#endif

+

+#if defined(PORTH) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port H identifier.

+ */

+#define IOPORT8         ((volatile avr_gpio_registers_t *)&PINH)

+#endif

+

+#if defined(PORTJ) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port J identifier.

+ */

+#define IOPORT9         ((volatile avr_gpio_registers_t *)&PINJ)

+#endif

+

+#if defined(PORTK) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port K identifier.

+ */

+#define IOPORT10        ((volatile avr_gpio_registers_t *)&PINK)

+#endif

+

+#if defined(PORTL) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port L identifier.

+ */

+#define IOPORT11        ((volatile avr_gpio_registers_t *)&PINL)

+#endif

+

+#if defined(PORTADC) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port ADC identifier.

+ */

+#define IOPORTADC			((volatile avr_gpio_registers_t *)&PINADC)

+#endif

+

+#if defined(PORT_SPI1) || defined(__DOXYGEN__)

+/**

+ * @brief   GPIO port SPI1 identifier.

+ */

+#define IOPORTSPI1			((volatile avr_gpio_registers_t *)&PIN_SPI1)

+#endif

+

+

+/*===========================================================================*/

+/* 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 the 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)->in)

+

+/**

+ * @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) ((port)->out)

+

+/**

+ * @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) ((port)->out = 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.

+ *

+ * @param[in] port      port identifier

+ * @param[in] pad       pad number within the port

+ *

+ * @notapi

+ */

+#define pal_lld_setpad(port, pad)                                           \

+__asm__ __volatile__                                                        \

+(                                                                           \

+	"sbi %0,%1\n\t"                                                         \

+	:                                                                       \

+	: "I" (_SFR_IO_ADDR(port->out)),                                        \

+	  "I" (pad)                                                             \

+								                                            \

+)

+

+/**

+ * @brief   Clears a pad logical state to @p PAL_LOW.

+ *

+ * @param[in] port      port identifier

+ * @param[in] pad       pad number within the port

+ *

+ * @notapi

+ */

+#define pal_lld_clearpad(port, pad)                                         \

+__asm__ __volatile__                                                        \

+(                                                                           \

+	"cbi %0,%1\n\t"                                                         \

+	:                                                                       \

+	: "I" (_SFR_IO_ADDR(port->out)),                                        \

+	  "I" (pad)                                                             \

+								                                            \

+)

+

+extern ROMCONST PALConfig pal_default_config;

+

+#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);

+#ifdef __cplusplus

+}

+#endif

+

+#endif /* HAL_USE_PAL */

+

+#endif /* _PAL_LLD_H_ */

+

+/** @} */