forked from Imagelibrary/rtems
10ee41a8a3
Add TM27_USE_VECTOR_HANDLER to select the interrupt handler type used by the <tm27.h> implementation. Close #4820.
106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/* @file
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*
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* @ingroup RTEMSBSPsARMLPC32XX
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*
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* @brief Implementations of interrupt mechanisms for Time Test 27
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*/
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/*
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* Copyright (c) 2010 embedded brains GmbH. All rights reserved.
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN 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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#ifndef _RTEMS_TMTEST27
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#error "This is an RTEMS internal file you must not include directly."
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#endif
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#ifndef __tm27_h
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#define __tm27_h
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#include <rtems.h>
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#include <bsp/lpc32xx.h>
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#include <bsp/irq.h>
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#include <bsp/irq-generic.h>
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#define MUST_WAIT_FOR_INTERRUPT 1
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#define LPC32XX_TM27_TIMER (&lpc32xx.timer_2)
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#define LPC32XX_TM27_IRQ LPC32XX_IRQ_TIMER_2
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static inline void Install_tm27_vector( rtems_interrupt_handler handler )
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{
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static rtems_interrupt_entry entry;
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volatile lpc_timer *timer = LPC32XX_TM27_TIMER;
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LPC32XX_TIMCLK_CTRL1 |= 1U << 4;
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timer->tcr = LPC_TIMER_TCR_RST;
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timer->ctcr = 0x0;
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timer->pr = 0x0;
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timer->ir = 0xff;
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timer->mcr = LPC_TIMER_MCR_MR0_INTR | LPC_TIMER_MCR_MR0_STOP |
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LPC_TIMER_MCR_MR0_RST;
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timer->ccr = 0x0;
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timer->emr = 0x0;
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timer->mr0 = 0x1;
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rtems_interrupt_entry_initialize(
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&entry,
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handler,
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NULL,
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"tm27"
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);
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(void) rtems_interrupt_entry_install(
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LPC32XX_TM27_IRQ,
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RTEMS_INTERRUPT_SHARED,
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&entry
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);
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}
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static inline void Cause_tm27_intr(void)
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{
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volatile lpc_timer *timer = LPC32XX_TM27_TIMER;
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timer->tcr = LPC_TIMER_TCR_EN;
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}
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static inline void Clear_tm27_intr(void)
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{
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volatile lpc_timer *timer = LPC32XX_TM27_TIMER;
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timer->ir = LPC_TIMER_IR_MR0;
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lpc32xx_irq_set_priority(LPC32XX_TM27_IRQ, LPC32XX_IRQ_PRIORITY_LOWEST);
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}
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static inline void Lower_tm27_intr(void)
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{
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bsp_interrupt_vector_enable(LPC32XX_TM27_IRQ);
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lpc32xx_irq_set_priority(LPC32XX_TM27_IRQ, LPC32XX_IRQ_PRIORITY_HIGHEST);
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}
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#endif /* __tm27_h */
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