88 lines
3.6 KiB
C
88 lines
3.6 KiB
C
/****************************************************************************
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* arch/risc-v/src/gap8/gap8_tim.h
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* PIN driver for GAP8
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: hhuysqt <1020988872@qq.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* GAP8 features a 64-bit basic timer, able to split into 2 32-bit timers,
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* with identicle memory map and 2 IRQ channels, for both FC core and
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* cluster. We would use it as system timer.
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****************************************************************************/
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#ifndef __ARCH_RISC_V_SRC_GAP8_TIM_H
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#define __ARCH_RISC_V_SRC_GAP8_TIM_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include "gap8.h"
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: gap8_timer_initialize
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*
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* Description:
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* Initialize the timer based on the frequency of source clock and ticks
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* per second.
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*
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****************************************************************************/
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void gap8_timer_initialize(uint32_t source_clock, uint32_t tick_per_second);
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/****************************************************************************
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* Name: gap8_register_timercallback
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*
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* Description:
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* Register a callback function called on timer IRQ
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*
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****************************************************************************/
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void gap8_register_timercallback(void (*on_timer)(void*arg), void *arg);
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/****************************************************************************
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* Name: gap8_timer_isr
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*
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* Description:
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* ISR for timer
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*
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****************************************************************************/
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void gap8_timer_isr(void);
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#endif /* __ARCH_RISC_V_SRC_GAP8_TIM_H */
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