Add lpc313x header files
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2427 42af7a65-404d-4744-a932-0658087f49c3
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arch/arm/src/lpc313x/lpc313x_timer.h
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119
arch/arm/src/lpc313x/lpc313x_timer.h
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/************************************************************************************************
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* arch/arm/src/lpc313x/lpc313x_timer.h
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*
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* Copyright (C) 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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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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#ifndef __ARCH_ARM_SRC_LPC313X_TIMER_H
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#define __ARCH_ARM_SRC_LPC313X_TIMER_H
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/************************************************************************************************
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* Included Files
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************************************************************************************************/
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#include <nuttx/config.h>
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#include "lpc313x_memorymap.h"
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/************************************************************************************************
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* Pre-processor Definitions
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************************************************************************************************/
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/* TIMER register base address offset into the APB1 domain **************************************/
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#define LPC313X_TIMER0_VBASE (LPC313X_APB1_VSECTION+LPC313X_APB1_TIMER0_OFFSET)
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#define LPC313X_TIMER0_PBASE (LPC313X_APB1_PSECTION+LPC313X_APB1_TIMER0_OFFSET)
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#define LPC313X_TIMER1_VBASE (LPC313X_APB1_VSECTION+LPC313X_APB1_TIMER1_OFFSET)
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#define LPC313X_TIMER1_PBASE (LPC313X_APB1_PSECTION+LPC313X_APB1_TIMER1_OFFSET)
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#define LPC313X_TIMER2_VBASE (LPC313X_APB1_VSECTION+LPC313X_APB1_TIMER2_OFFSET)
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#define LPC313X_TIMER2_PBASE (LPC313X_APB1_PSECTION+LPC313X_APB1_TIMER2_OFFSET)
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#define LPC313X_TIMER3_VBASE (LPC313X_APB1_VSECTION+LPC313X_APB1_TIMER3_OFFSET)
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#define LPC313X_TIMER3_PBASE (LPC313X_APB1_PSECTION+LPC313X_APB1_TIMER3_OFFSET)
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/* TIMER register offsets (with respect to the TIMERn base) *************************************/
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#define LPC313X_TIMER_LOAD_OFFSET 0x00 /* Timer reload value */
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#define LPC313X_TIMER_VALUE_OFFSET 0x04 /* Current timer value */
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#define LPC313X_TIMER_CTRL_OFFSET 0x08 /* Timer nable/disable and pre-scale */
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#define LPC313X_TIMER_CLEAR_OFFSET 0x0c /* Clear timer interrupt */
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/* TIMER register (virtual) addresses ***********************************************************/
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#define LPC313X_TIMER0_LOAD (LPC313X_TIMER0_VBASE+LPC313X_TIMER_LOAD_OFFSET)
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#define LPC313X_TIMER0_VALUE (LPC313X_TIMER0_VBASE+LPC313X_TIMER_VALUE_OFFSET)
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#define LPC313X_TIMER0_CTRL (LPC313X_TIMER0_VBASE+LPC313X_TIMER_CTRL_OFFSET)
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#define LPC313X_TIMER0_CLEAR (LPC313X_TIMER0_VBASE+LPC313X_TIMER_CLEAR_OFFSET)
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#define LPC313X_TIMER1_LOAD (LPC313X_TIMER1_VBASE+LPC313X_TIMER_LOAD_OFFSET)
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#define LPC313X_TIMER1_VALUE (LPC313X_TIMER1_VBASE+LPC313X_TIMER_VALUE_OFFSET)
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#define LPC313X_TIMER1_CTRL (LPC313X_TIMER1_VBASE+LPC313X_TIMER_CTRL_OFFSET)
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#define LPC313X_TIMER1_CLEAR (LPC313X_TIMER1_VBASE+LPC313X_TIMER_CLEAR_OFFSET)
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#define LPC313X_TIMER2_LOAD (LPC313X_TIMER2_VBASE+LPC313X_TIMER_LOAD_OFFSET)
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#define LPC313X_TIMER2_VALUE (LPC313X_TIMER2_VBASE+LPC313X_TIMER_VALUE_OFFSET)
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#define LPC313X_TIMER2_CTRL (LPC313X_TIMER2_VBASE+LPC313X_TIMER_CTRL_OFFSET)
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#define LPC313X_TIMER2_CLEAR (LPC313X_TIMER2_VBASE+LPC313X_TIMER_CLEAR_OFFSET)
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#define LPC313X_TIMER3_LOAD (LPC313X_TIMER3_VBASE+LPC313X_TIMER_LOAD_OFFSET)
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#define LPC313X_TIMER3_VALUE (LPC313X_TIMER3_VBASE+LPC313X_TIMER_VALUE_OFFSET)
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#define LPC313X_TIMER3_CTRL (LPC313X_TIMER3_VBASE+LPC313X_TIMER_CTRL_OFFSET)
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#define LPC313X_TIMER3_CLEAR (LPC313X_TIMER3_VBASE+LPC313X_TIMER_CLEAR_OFFSET)
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/* TIMER register bit definitions ***************************************************************/
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/* Timer Control register TIMER0_CTRL, address 0x13008008 TIMER1_CTRL, address 0x13008408
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* TIMER2_CTRL, address 0x13008808 TIMER3_CTRL, adddress 0x13008c08
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*/
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#define TIMER_CTRL_ENABLE (1 << 7) /* Bit 7: Timer enable */
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#define TIMER_CTRL_MODE (1 << 6) /* Bit 6: Periodic timer mode */
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#define TIMER_CTRL_PRESCALE_SHIFT (2) /* Bits 2-3: Timer pre-scale */
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#define TIMER_CTRL_PRESCALE_MASK (3 << TIMER_CTRL_PRESCALE_SHIFT)
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# define TIMER_CTRL_PRESCALE_DIV1 (0 << TIMER_CTRL_PRESCALE_SHIFT) /* Divider=1 Stages=0 */
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# define TIMER_CTRL_PRESCALE_DIV16 (1 << TIMER_CTRL_PRESCALE_SHIFT) /* Divider=16 Stages4 */
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# define TIMER_CTRL_PRESCALE_DIV256 (2 << TIMER_CTRL_PRESCALE_SHIFT) /* Divider=256 Stages=8 */
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/************************************************************************************************
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* Public Types
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************************************************************************************************/
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/************************************************************************************************
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* Public Data
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************************************************************************************************/
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/************************************************************************************************
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* Public Functions
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************************************************************************************************/
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#endif /* __ARCH_ARM_SRC_LPC313X_TIMER_H */
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