RGBtoHDMI/src/rpi-systimer.h

57 wiersze
2.0 KiB
C

/*
Part of the Raspberry-Pi Bare Metal Tutorials
Copyright (c) 2013-2015, 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_SYSTIMER_H
#define RPI_SYSTIMER_H
#include <stdint.h>
#include "rpi-base.h"
#define RPI_SYSTIMER_BASE ( _get_peripheral_base() + 0x3000 )
typedef struct {
volatile uint32_t control_status;
volatile uint32_t counter_lo;
volatile uint32_t counter_hi;
volatile uint32_t compare0;
volatile uint32_t compare1;
volatile uint32_t compare2;
volatile uint32_t compare3;
} rpi_sys_timer_t;
extern rpi_sys_timer_t* RPI_GetSystemTimer(void);
extern void RPI_WaitMicroSeconds( uint32_t us );
#define usleep(x) RPI_WaitMicroSeconds(x)
#endif