| /* ---------------------------------------------------------------------------- | |
| * SAM Software Package License | |
| * ---------------------------------------------------------------------------- | |
| * Copyright (c) 2015, Atmel Corporation | |
| * | |
| * All rights reserved. | |
| * | |
| * Redistribution and use in source and binary forms, with or without | |
| * modification, are permitted provided that the following conditions are met: | |
| * | |
| * - Redistributions of source code must retain the above copyright notice, | |
| * this list of conditions and the disclaimer below. | |
| * | |
| * Atmel's name may not be used to endorse or promote products derived from | |
| * this software without specific prior written permission. | |
| * | |
| * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR | |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE | |
| * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, | |
| * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| * ---------------------------------------------------------------------------- | |
| */ | |
| /** | |
| * \file | |
| * | |
| * \section Purpose | |
| * | |
| * This file provides a basic API for PIO configuration and usage of | |
| * user-controlled pins. Please refer to the board.h file for a list of | |
| * available pin definitions. | |
| * | |
| * \section Usage | |
| * | |
| * -# Define a constant pin description array such as the following one, using | |
| * the existing definitions provided by the board.h file if possible: | |
| * \code | |
| * const struct _pin pins[] = {PIN_USART0_TXD, PIN_USART0_RXD}; | |
| * \endcode | |
| * Alternatively, it is possible to add new pins by provided the full Pin | |
| * structure: | |
| * \code | |
| * // Pin instance to configure PA10 & PA11 as inputs with the internal | |
| * // pull-up enabled. | |
| * const Pin pins = { | |
| * (1 << 10) | (1 << 11), | |
| * REG_PIOA, | |
| * ID_PIOA, | |
| * PIO_INPUT, | |
| * PIO_PULLUP | |
| * }; | |
| * \endcode | |
| * -# Configure a pin array by calling pio_configure() with a pointer to the | |
| * array and its size (which is computed using the ARRAY_SIZE macro). | |
| * -# Change and get the value of a user-controlled pin using the pio_set, | |
| * pio_clear and pio_get methods. | |
| * -# Get the level being currently output by a user-controlled pin configured | |
| * as an output using pio_get_output_date_status(). | |
| */ | |
| #ifndef _PIO_H | |
| #error "pio3.h cannot be included. pio.h should be used instead" | |
| #endif | |
| #ifndef _PIO4_H | |
| #define _PIO4_H | |
| /*------------------------------------------------------------------------------ | |
| * Headers | |
| *------------------------------------------------------------------------------*/ | |
| #include "chip.h" | |
| #include <stdint.h> | |
| /*------------------------------------------------------------------------------ | |
| * Definitions | |
| *------------------------------------------------------------------------------*/ | |
| /* The IO group is A (or 0) */ | |
| #define PIO_GROUP_A 0 | |
| /* The IO group is B (or 1) */ | |
| #define PIO_GROUP_B 1 | |
| /* The IO group is C (or 2) */ | |
| #define PIO_GROUP_C 2 | |
| /* The IO group is D (or 3) */ | |
| #define PIO_GROUP_D 3 | |
| #define PIO_GROUP_LENGTH PIOIO_GROUP_NUMBER | |
| /* The pin is controlled by the generic PIO. */ | |
| #define PIO_GENERIC 0 | |
| /* The pin is controlled by the associated signal of peripheral A. */ | |
| #define PIO_PERIPH_A 1 | |
| /* The pin is controlled by the associated signal of peripheral B. */ | |
| #define PIO_PERIPH_B 2 | |
| /* The pin is controlled by the associated signal of peripheral C. */ | |
| #define PIO_PERIPH_C 3 | |
| /* The pin is controlled by the associated signal of peripheral D. */ | |
| #define PIO_PERIPH_D 4 | |
| /* The pin is controlled by the associated signal of peripheral E. */ | |
| #define PIO_PERIPH_E 5 | |
| /* The pin is controlled by the associated signal of peripheral F. */ | |
| #define PIO_PERIPH_F 6 | |
| /* The pin is controlled by the associated signal of peripheral G. */ | |
| #define PIO_PERIPH_G 7 | |
| /* The pin is an input. */ | |
| #define PIO_INPUT 10 | |
| /* The pin is an output. */ | |
| #define PIO_OUTPUT 11 | |
| /* The pin is an output and has a default level of 0. */ | |
| #define PIO_OUTPUT_0 11 | |
| /* The pin is an output and has a default level of 1. */ | |
| #define PIO_OUTPUT_1 12 | |
| /* Default pin configuration (no attribute). */ | |
| #define PIO_DEFAULT (0x0u << 0) | |
| /* The internal pin pull-up is active. */ | |
| #define PIO_PULLUP (0x1u << 0) | |
| /* The internal pin pull-down is active. */ | |
| #define PIO_PULLDOWN (0x1u << 1) | |
| /* The pin is open-drain. */ | |
| #define PIO_OPENDRAIN (0x1u << 2) | |
| /* The internal glitch filter is active. */ | |
| #define PIO_DEGLITCH (0x1u << 3) | |
| /* The internal Debounce filter is active. */ | |
| #define PIO_DEBOUNCE (0x1u << 4) | |
| /* The internal Schmitt trigger is disable. */ | |
| #define PIO_TRIGGER_DIS (0x1u << 5) | |
| /* Drive Strength. */ | |
| #define PIO_DRVSTR_Pos 10 | |
| #define PIO_DRVSTR_Msk (0x3u << 10) | |
| #define PIO_DRVSTR_HI (0x2u << 10) /* High drive */ | |
| #define PIO_DRVSTR_ME (0x1u << 10) /* Medium drive */ | |
| #define PIO_DRVSTR_LO (0x0u << 10) /* Low drive */ | |
| #define PIO_EVTSEL_Pos 12 | |
| #define PIO_EVTSEL_Msk (0x7u << 12) | |
| /* Event detection on input falling edge. */ | |
| #define PIO_IT_FALL_EDGE (0x0u << 12) | |
| /* Event detection on input rising edge. */ | |
| #define PIO_IT_RISE_EDGE (0x1u << 12) | |
| /* Event detection on input both edge. */ | |
| #define PIO_IT_BOTH_EDGE (0x2u << 12) | |
| /* Event detection on low level input. */ | |
| #define PIO_IT_LOW_LEVEL (0x3u << 12) | |
| /*Event detection on high level input. */ | |
| #define PIO_IT_HIGH_LEVEL (0x4u << 12) | |
| #define PIO_WPMR_WPEN_EN ( 0x01 << 0 ) | |
| #define PIO_WPMR_WPEN_DIS ( 0x00 << 0 ) | |
| #define PIO_WPMR_WPKEY_VALID ( 0x50494F << 8 ) | |
| #endif /* #ifndef _PIO4_H */ |