/*
    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/>.
*/

/**
 * @defgroup STM32 STM32 Support
 * @brief STM32 specific support.
 * @details The STM32 support includes:
 * - I/O ports driver.
 * - Buffered, interrupt driven, serial driver.
 * - A demo supporting the kernel test suite.
 * .
 * @ingroup ARMCM3
 */

/**
 * @defgroup STM32_PAL STM32 I/O Ports Support
 * @brief I/O Ports peripherals support.
 * @details This module supports the STM3 GPIO controller. The controller
 * supports the following features (see @ref PAL):
 * - 16 bits wide ports.
 * - Atomic set/reset functions.
 * - Atomic set+reset function (atomic bus operations).
 * - Output latched regardless of the pad setting.
 * - Direct read of input pads regardless of the pad setting.
 * .
 * <h2>Supported Setup Modes</h2>
 * - @p PAL_MODE_RESET.
 * - @p PAL_MODE_UNCONNECTED.
 * - @p PAL_MODE_INPUT.
 * - @p PAL_MODE_INPUT_PULLUP.
 * - @p PAL_MODE_INPUT_PULLDOWN.
 * - @p PAL_MODE_OUTPUT_PUSHPULL.
 * - @p PAL_MODE_OUTPUT_OPENDRAIN.
 * .
 * Any attempt to setup an invalid mode is ignored.
 *
 * <h2>Suboptimal Behavior</h2>
 * Some GPIO features are less than optimal:
 * - Pad/port toggling operations are not atomic.
 * - Pad/group mode setup is not atomic.
 * - Writing on pads/groups/ports programmed as input with pull-up/down
 *   resistor can change the resistor setting because the output latch is
 *   used for resistor selection.
 * .
 * @ingroup STM32
 */

/**
 * @defgroup STM32_SERIAL STM32 USART Support
 * @brief USART peripherals support.
 * @details The serial driver supports the STM32 USARTs in asynchronous
 * mode.
 *
 * @ingroup STM32
 */