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[sam3] add support for the PIO peripheral of all devices

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Add register definitions and access functions.
This commit is contained in:
Felix Held
2014-03-01 21:32:37 +01:00
committed by Karl Palsson
parent 8a24685d0c
commit 235734ea42
26 changed files with 936 additions and 129 deletions
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47
include/libopencm3/sam/gpio.h
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@@ -1,7 +1,9 @@
/* This provides unification of code over SAM subfamilies */
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz>
* Copyright (C) 2014 Felix Held <felix-libopencm3@felixheld.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
@@ -17,35 +19,16 @@
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SAM3X_GPIO_H
#define SAM3X_GPIO_H
#include <libopencm3/sam/pio.h>
/* flags may be or'd together, but only contain one of
* GPOUTPUT, PERIPHA and PERIPHB */
enum gpio_flags {
GPIO_FLAG_GPINPUT = 0,
GPIO_FLAG_GPOUTPUT = 1,
GPIO_FLAG_PERIPHA = 2,
GPIO_FLAG_PERIPHB = 3,
GPIO_FLAG_OPEN_DRAIN = 4,
GPIO_FLAG_PULL_UP = 8,
};
void gpio_init(uint32_t gpioport, uint32_t pins, enum gpio_flags flags);
static inline void gpio_set(uint32_t gpioport, uint32_t gpios)
{
PIO_SODR(gpioport) = gpios;
}
static inline void gpio_clear(uint32_t gpioport, uint32_t gpios)
{
PIO_CODR(gpioport) = gpios;
}
void gpio_toggle(uint32_t gpioport, uint32_t gpios);
#if defined(SAM3A)
# include <libopencm3/sam/3a/gpio.h>
#elif defined(SAM3N)
# include <libopencm3/sam/3n/gpio.h>
#elif defined(SAM3S)
# include <libopencm3/sam/3s/gpio.h>
#elif defined(SAM3U)
# include <libopencm3/sam/3u/gpio.h>
#elif defined(SAM3X)
# include <libopencm3/sam/3x/gpio.h>
#else
# error "sam family not defined."
#endif