Added missing file.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1011 35acf78f-673a-0410-8e92-d51de3d6d3f4

ports/ARMCM3-STM32F103/ioports_lld.h

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+/*
+    ChibiOS/RT - Copyright (C) 2006-2007 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 ports/ARMCM3-STM32F103/ioports_lld.h
+ * @brief STM32 GPIO low level driver
+ * @addtogroup STM32F103_IOPORTS
+ * @{
+ */
+
+#ifndef _IOPORTS_LLD_H_
+#define _IOPORTS_LLD_H_
+
+#ifndef __STM32F10x_MAP_H
+#include "stm32f10x_map.h"
+#endif
+
+/*===========================================================================*/
+/* I/O Ports Types and constants.                                            */
+/*===========================================================================*/
+
+/**
+ * @brief Width, in bits, of an I/O port.
+ */
+#define IOPORTS_WIDTH 16
+
+/**
+ * @brief Digital I/O port sized unsigned type.
+ */
+typedef uint32_t ioportmask_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;
+
+/*===========================================================================*/
+/* I/O Ports Identifiers.                                                    */
+/* The low level driver wraps the definitions already present in the STM32   */
+/* firmware library.                                                         */
+/*===========================================================================*/
+
+/**
+ * @brief GPIO port A identifier.
+ */
+#if defined(_GPIOA) || defined(__DOXYGEN__)
+#define IOPORT_A        GPIOA
+#endif
+
+/**
+ * @brief GPIO port A identifier.
+ */
+#if defined(_GPIOB) || defined(__DOXYGEN__)
+#define IOPORT_B        GPIOB
+#endif
+
+/**
+ * @brief GPIO port A identifier.
+ */
+#if defined(_GPIOC) || defined(__DOXYGEN__)
+#define IOPORT_C        GPIOC
+#endif
+
+/**
+ * @brief GPIO port A identifier.
+ */
+#if defined(_GPIOD) || defined(__DOXYGEN__)
+#define IOPORT_D        GPIOD
+#endif
+
+/**
+ * @brief GPIO port A identifier.
+ */
+#if defined(_GPIOE) || defined(__DOXYGEN__)
+#define IOPORT_E        GPIOE
+#endif
+
+/*===========================================================================*/
+/* Implementation, some of the following macros could be implemented as      */
+/* functions, please put them in a file named ioports_lld.c if so.           */
+/*===========================================================================*/
+
+/**
+ * @brief Writes a bits mask on a I/O port.
+ *
+ * @param[in] port the port identifier
+ * @param[in] bits the bits to be written on the specified port
+ *
+ * @note This function is not meant to be invoked directly by the application
+ *       code.
+ */
+#define ioport_write_lld(port, bits) ((port)->ODR = (bits))
+
+/**
+ * @brief Reads an I/O port.
+ *
+ * @param[in] port the port identifier
+ * @return the port bits
+ *
+ * @note This function is not meant to be invoked directly by the application
+ *       code.
+ */
+#define ioport_read_lld(port) ((port)->IDR)
+
+/**
+ * @brief Sets a bits mask on a I/O port.
+ *
+ * @param[in] port the port identifier
+ * @param[in] bits the bits to be ORed on the specified port
+ *
+ * @note This function is not meant to be invoked directly by the application
+ *       code.
+ */
+#define ioport_set_lld(port, bits) ((port)->BSRR = (bits))
+
+/**
+ * @brief Clears a bits mask on a I/O port.
+ *
+ * @param[in] port the port identifier
+ * @param[in] bits the bits to be cleared on the specified port
+ *
+ * @note This function is not meant to be invoked directly by the application
+ *       code.
+ */
+#define ioport_clear_lld(port, bits) ((port)->BRR = (bits))
+
+/**
+ * @brief Toggles a bits mask on a I/O port.
+ *
+ * @param[in] port the port identifier
+ * @param[in] bits the bits to be XORed on the specified port
+ *
+ * @note This function is not meant to be invoked directly by the application
+ *       code.
+ */
+#define ioport_toggle_lld(port, bits) ((port)->ODR ^= (bits))
+
+/**
+ * @brief Writes a value on an I/O bus.
+ *
+ * @param[in] bus the I/O bus, pointer to a @p IOBus structure
+ * @param[in] bits the bits to be written on the I/O bus. Values exceeding
+ *            the bus width are masked so most significant bits are lost.
+ *
+ * @note This function is not meant to be invoked directly by the application
+ *       code.
+ */
+#define ioport_writebus_lld(bus, bits) {                                \
+  (bus)->bus_portid->BSRR = ((((~(bits)) << (bus)->bus_offset) &        \
+                             (bus)->bus_mask) << 16) |                  \
+                            (((bits) << (bus)->bus_offset) &            \
+                             (bus)->bus_mask);                          \
+}
+
+/**
+ * @brief Reads a value from an I/O bus.
+ *
+ * @param[in] bus the I/O bus, pointer to a @p IOBus structure
+ * @return the bus bits
+ *
+ * @note This function is not meant to be invoked directly by the application
+ *       code.
+ */
+#define ioport_readbus_lld(bus) \
+  (((bus)->bus_portid->IDR & (bus)->bus_mask) >> (bus)->bus_offset)
+
+#endif /* _IOPORTS_LLD_H_ */
+
+/** @} */