From 97177506043af367d3da1f165903f0721ba7120a Mon Sep 17 00:00:00 2001 From: gdisirio Date: Tue, 2 Jun 2009 09:33:58 +0000 Subject: 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 | 188 +++++++++++++++++++++++++++++++++++ 1 file changed, 188 insertions(+) create mode 100644 ports/ARMCM3-STM32F103/ioports_lld.h (limited to 'ports') diff --git a/ports/ARMCM3-STM32F103/ioports_lld.h b/ports/ARMCM3-STM32F103/ioports_lld.h new file mode 100644 index 000000000..05d71831d --- /dev/null +++ b/ports/ARMCM3-STM32F103/ioports_lld.h @@ -0,0 +1,188 @@ +/* + 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 . +*/ + +/** + * @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_ */ + +/** @} */ -- cgit v1.2.3