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-/*
- ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-*/
-
-/**
- * @defgroup AVR_DRIVERS AVR Drivers
- * @details This section describes all the supported drivers on the AVR
- * platform and the implementation details of the single drivers.
- *
- * @ingroup platforms
- */
-
-/**
- * @defgroup AVR_HAL AVR Initialization Support
- * @details On the AVR platform the HAL driver is a stub and does not perform
- * any platform-specific initialization, it still performs the
- * initialization of the other drivers.
- *
- * @ingroup AVR_DRIVERS
- */
-
-/**
- * @defgroup AVR_PAL AVR PAL Support
- * @details The AVR PAL driver uses the PORT peripherals.
- *
- * @section avr_pal_1 Supported HW resources
- * - PORTA.
- * - PORTB.
- * - PORTC.
- * - PORTD.
- * - PORTE.
- * - PORTF.
- * - PORTG.
- * .
- * @section avr_pal_2 AVR PAL driver implementation features
- * The AVR PAL driver implementation fully supports the following hardware
- * capabilities:
- * - 8 bits wide ports.
- * - Atomic set/reset functions.
- * - Output latched regardless of the pad setting.
- * - Direct read of input pads regardless of the pad setting.
- * .
- * @section avr_pal_3 Supported PAL setup modes
- * The AVR 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_INPUT_ANALOG.
- * - @p PAL_MODE_OUTPUT_PUSHPULL.
- * .
- * Any attempt to setup an invalid mode is ignored.
- *
- * @section avr_pal_4 Suboptimal behavior
- * The AVR PORT is less than optimal in several areas, the limitations
- * should be taken in account while using the PAL driver:
- * - Pad/port toggling operations are not atomic.
- * - Pad/group mode setup is not atomic.
- * - Group set+reset function is not atomic.
- * - Writing on pads/groups/ports programmed as input with pull-up
- * resistor changes the resistor setting because the output latch is
- * used for resistor selection.
- * - The PORT registers layout on some devices is not regular (it does
- * not have contiguous PIN, DDR, PORT registers in this order), such
- * ports cannot be accessed using the PAL driver. For example, PORT F
- * on ATmega128. Verify the user manual of your device.
- * .
- * @ingroup AVR_DRIVERS
- */
-
-/**
- * @defgroup AVR_SERIAL AVR Serial Support
- * @details The AVR Serial driver uses the USART peripherals in a
- * buffered, interrupt driven, implementation.
- *
- * @section avr_serial_1 Supported HW resources
- * The serial driver can support any of the following hardware resources:
- * - USART0.
- * - USART1.
- * .
- * @section avr_serial_2 AVR Serial driver implementation features
- * - Each USART can be independently enabled and programmed.
- * - Fully interrupt driven.
- * .
- * @ingroup AVR_DRIVERS
- */
-
-/**
- * @defgroup AVR_I2C AVR I2C Support
- * @details The AVR I2C driver uses the TWI peripheral in an interrupt
- * driven, implementation.
- *
- * @section avr_i2c Supported HW resources
- * The i2c driver can support the following hardware resource:
- * - I2C.
- * .
- * @ingroup AVR_DRIVERS
- */