/*
    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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 STM8S STM8S Drivers
 * @details This section describes all the supported drivers on the STM8S
 *          platform and the implementation details of the single drivers.
 *
 * @ingroup platforms
 */

/**
 * @defgroup STM8S_HAL STM8S Initialization Support
 * @details The STM8S HAL support is responsible for system initialization.
 *
 * @section stm8s_hal_1 Supported HW resources
 * - CLK.
 * .
 * @section stm8s_hal_2 STM8S HAL driver implementation features
 * - Clock tree initialization.
 * - Clock source selection.
 * .
 * @ingroup STM8S
 */

/**
 * @defgroup STM8S_PAL STM8S GPIO Support
 * @details The STM8S PAL driver uses the GPIO peripherals.
 *
 * @section stm8s_pal_1 Supported HW resources
 * - GPIOA.
 * - GPIOB.
 * - GPIOC.
 * - GPIOD.
 * - GPIOE.
 * - GPIOF.
 * - GPIOG (where present).
 * - GPIOH (where present).
 * - GPIOI (where present).
 * .
 * @section stm8s_pal_2 STM8S PAL driver implementation features
 * The PAL driver implementation fully supports the following hardware
 * capabilities:
 * - 8 bits wide ports.
 * - Atomic set/reset/toggle functions because special STM8S instruction set.
 * - Output latched regardless of the pad setting.
 * - Direct read of input pads regardless of the pad setting.
 * .
 * @section stm8s_pal_3 Supported PAL setup modes
 * The STM8S PAL driver supports the following I/O modes:
 * - @p PAL_MODE_RESET.
 * - @p PAL_MODE_UNCONNECTED.
 * - @p PAL_MODE_INPUT.
 * - @p PAL_MODE_INPUT_PULLUP.
 * - @p PAL_MODE_OUTPUT_PUSHPULL.
 * - @p PAL_MODE_OUTPUT_OPENDRAIN.
 * .
 * Any attempt to setup an invalid mode is ignored.
 *
 * @section stm8s_pal_4 Suboptimal behavior
 * The STM8S GPIO is less than optimal in several areas, the limitations
 * should be taken in account while using the PAL driver:
 * - Bus/group writing is not atomic.
 * - Pad/group mode setup is not atomic.
 * .
 * @ingroup STM8S
 */

/**
 * @defgroup STM8S_SPI STM8S SPI Support
 * @details The SPI driver supports the STM8S SPI peripheral in an interrupt
 *          driven implementation.
 * @note    Being the SPI a fast peripheral, much care must be taken to
 *          not saturate the CPU bandwidth with an excessive IRQ rate. The
 *          maximum transfer bit rate is likely limited by the IRQ
 *          handling.
 *
 * @section stm8s_spi_1 Supported HW resources
 * - SPI.
 * .
 * @section stm8s_spi_2 STM8S SPI driver implementation features
 * - Clock stop for reduced power usage when the driver is in stop state.
 * - Fully interrupt driven.
 * .
 * @ingroup STM8S
 */

/**
 * @defgroup STM8S_SERIAL STM8S UART Support (buffered)
 * @details The STM8S Serial driver uses the UART peripherals in a
 *          buffered, interrupt driven, implementation.
 *
 * @section stm8s_serial_1 Supported HW resources
 * The serial driver can support any of the following hardware resources:
 * - UART1.
 * - UART2 (where present).
 * - UART3 (where present).
 * .
 * @section stm8s_serial_2 STM8S Serial driver implementation features
 * - Clock stop for reduced power usage when the driver is in stop state.
 * - Each UART can be independently enabled and programmed. Unused
 *   peripherals are left in low power mode.
 * - Fully interrupt driven.
 * .
 * @ingroup STM8S
 */