tinySA/os/hal/platforms/LPC11xx/platform.dox

/*
    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 LPC11xx LPC11xx Drivers
 * @details This section describes all the supported drivers on the LPC11xx
 *          platform and the implementation details of the single drivers.
 *
 * @ingroup platforms
 */

/**
 * @defgroup LPC11xx_HAL LPC11xx Initialization Support
 * @details The LPC11xx HAL support is responsible for system initialization.
 *
 * @section lpc11xx_hal_1 Supported HW resources
 * - SYSCON.
 * - Flash.
 * .
 * @section lpc11xx_hal_2 LPC11xx HAL driver implementation features
 * - Clock tree initialization.
 * - Clock source selection.
 * - Flash controller initialization.
 * - SYSTICK initialization based on current clock and kernel required rate.
 * .
 * @ingroup LPC11xx
 */

/**
 * @defgroup LPC11xx_PAL LPC11xx GPIO Support
 * @details The LPC11xx PAL driver uses the GPIO peripherals.
 *
 * @section lpc11xx_pal_1 Supported HW resources
 * - GPIO0.
 * - GPIO1.
 * - GPIO2.
 * - GPIO3.
 * .
 * @section lpc11xx_pal_2 LPC11xx PAL driver implementation features
 * - 12 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.
 * .
 * @section lpc11xx_pal_3 Supported PAL setup modes
 * - @p PAL_MODE_RESET.
 * - @p PAL_MODE_UNCONNECTED.
 * - @p PAL_MODE_INPUT.
 * - @p PAL_MODE_OUTPUT_PUSHPULL.
 * .
 * Any attempt to setup an invalid mode is ignored.
 *
 * @section lpc11xx_pal_4 Suboptimal behavior
 * Some GPIO features are less than optimal:
 * - Pad/port toggling operations are not atomic.
 * - Pull-up and Pull-down resistors cannot be programmed through the PAL
 *   driver and must be programmed separately using the IOCON peripheral.
 * - Reading of the output latch for pads programmed as input is not possible,
 *   the input pin value is returned instead.
 * .
 * @ingroup LPC11xx
 */

/**
 * @defgroup LPC11xx_SPI LPC11xx SSP Support
 * @details The SPI driver supports the LPC11xx SSP peripherals 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 lpc11xx_spi_1 Supported HW resources
 * - SSP0.
 * - SSP1 (where present).
 * .
 * @section lpc11xx_spi_2 LPC11xx SPI driver implementation features
 * - Clock stop for reduced power usage when the driver is in stop state.
 * - Each SSP can be independently enabled and programmed. Unused
 *   peripherals are left in low power mode.
 * - Fully interrupt driven.
 * - Programmable interrupt priority levels for each SSP.
 * .
 * @ingroup LPC11xx
 */

/**
 * @defgroup LPC11xx_SERIAL LPC11xx UART Support (buffered)
 * @details The LPC11xx Serial driver uses the UART peripheral in a
 *          buffered, interrupt driven, implementation. The serial driver
 *          also takes advantage of the LPC11xx UARTs deep hardware buffers.
 *
 * @section lpc11xx_serial_1 Supported HW resources
 * The serial driver can support any of the following hardware resources:
 * - UART.
 * .
 * @section lpc11xx_serial_2 LPC11xx Serial driver implementation features
 * - Clock stop for reduced power usage when the driver is in stop state.
 * - Fully interrupt driven.
 * - Programmable priority level.
 * - Takes advantage of the input and output FIFOs.
 * .
 * @ingroup LPC11xx
 */