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rpi-gpio.h
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rpi-gpio.h
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/*
Part of the Raspberry-Pi Bare Metal Tutorials
Copyright (c) 2013, Brian Sidebotham
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS 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.
*/
#ifndef RPI_GPIO_H
#define RPI_GPIO_H
/* The base address of the GPIO peripheral (ARM Physical Address) */
#if RASPPI==2 || RASPPI==3
#define GPIO_BASE 0x3F200000UL
#else
#define GPIO_BASE 0x20200000UL
#endif
#if defined( RPIBPLUS ) || RASPPI==2 || RASPPI==3
#define LED_GPFSEL GPIO_GPFSEL4
#define LED_GPFBIT 21
#define LED_GPSET GPIO_GPSET1
#define LED_GPCLR GPIO_GPCLR1
#define LED_GPIO_BIT 15
#define LED_ON() do { gpio[LED_GPCLR] = ( 1 << LED_GPIO_BIT ); } while( 0 )
#define LED_OFF() do { gpio[LED_GPSET] = ( 1 << LED_GPIO_BIT ); } while( 0 )
#else
#define LED_GPFSEL GPIO_GPFSEL1
#define LED_GPFBIT 18
#define LED_GPSET GPIO_GPSET0
#define LED_GPCLR GPIO_GPCLR0
#define LED_GPIO_BIT 16
#define LED_ON() do { gpio[LED_GPSET] = ( 1 << LED_GPIO_BIT ); } while( 0 )
#define LED_OFF() do { gpio[LED_GPCLR] = ( 1 << LED_GPIO_BIT ); } while( 0 )
#endif
#define GPIO_GPFSEL0 0
#define GPIO_GPFSEL1 1
#define GPIO_GPFSEL2 2
#define GPIO_GPFSEL3 3
#define GPIO_GPFSEL4 4
#define GPIO_GPFSEL5 5
#define GPIO_GPSET0 7
#define GPIO_GPSET1 8
#define GPIO_GPCLR0 10
#define GPIO_GPCLR1 11
#define GPIO_GPLEV0 13
#define GPIO_GPLEV1 14
#define GPIO_GPEDS0 16
#define GPIO_GPEDS1 17
#define GPIO_GPREN0 19
#define GPIO_GPREN1 20
#define GPIO_GPFEN0 22
#define GPIO_GPFEN1 23
#define GPIO_GPHEN0 25
#define GPIO_GPHEN1 26
#define GPIO_GPLEN0 28
#define GPIO_GPLEN1 29
#define GPIO_GPAREN0 31
#define GPIO_GPAREN1 32
#define GPIO_GPAFEN0 34
#define GPIO_GPAFEN1 35
#define GPIO_GPPUD 37
#define GPIO_GPPUDCLK0 38
#define GPIO_GPPUDCLK1 39
#endif