7a9457bb07
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5145 42af7a65-404d-4744-a932-0658087f49c3
153 lines
8.4 KiB
C
153 lines
8.4 KiB
C
/************************************************************************************
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* arch/arm/src/lpc214x/lpc214x_timer.h
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*
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* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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 __LPC214X_TIMER_H
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#define __LPC214X_TIMER_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/* Timer registers are 8-, 16-bit and 32-bits wide */
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/* Timer Interrupt Register Bit Definitions (8-bit) */
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#define LPC214X_TMR_IR_MR0I (1 << 0) /* Interrupt flag for match channel 0 */
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#define LPC214X_TMR_IR_MR1I (1 << 1) /* Interrupt flag for match channel 1 */
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#define LPC214X_TMR_IR_MR2I (1 << 2) /* Interrupt flag for match channel 2 */
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#define LPC214X_TMR_IR_MR3I (1 << 3) /* Interrupt flag for match channel 3 */
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#define LPC214X_TMR_IR_CR0I (1 << 4) /* Interrupt flag for capture channel 0 event */
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#define LPC214X_TMR_IR_CR1I (1 << 5) /* Interrupt flag for capture channel 1 event */
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#define LPC214X_TMR_IR_CR2I (1 << 6) /* Interrupt flag for capture channel 2 event */
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#define LPC214X_TMR_IR_CR3I (1 << 7) /* Interrupt flag for capture channel 3 event */
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#define LPC214X_TMR_IR_ALLI (0xff) /* All timer interrupts */
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/* Timer Control Register Bit Definitions (8-bits) */
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#define LPC214X_TMR_CR_ENABLE (1 << 0) /* Counter Enable */
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#define LPC214X_TMR_CR_RESET (1 << 1) /* Countger Reset */
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/* Timer Counter (32-bits, no bit fields) */
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/* Timer Prescale Register Bit Definitions (32-bits, no bit fields) */
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/* Timer Prescale Counter Register Bit Definitions */
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/* Timer Match Control Register Bit Definitions (16-bit) */
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#define LPC214X_TMR_MCR_MR0I (1 << 0) /* Enable Interrupt when MR0 matches TC */
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#define LPC214X_TMR_MCR_MR0R (1 << 1) /* Enable Reset of TC upon MR0 match */
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#define LPC214X_TMR_MCR_MR0S (1 << 2) /* Enable Stop of TC upon MR0 match */
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#define LPC214X_TMR_MCR_MR1I (1 << 3) /* Enable Interrupt when MR1 matches TC */
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#define LPC214X_TMR_MCR_MR1R (1 << 4) /* Enable Reset of TC upon MR1 match */
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#define LPC214X_TMR_MCR_MR1S (1 << 5) /* Enable Stop of TC upon MR1 match */
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#define LPC214X_TMR_MCR_MR2I (1 << 6) /* Enable Interrupt when MR2 matches TC */
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#define LPC214X_TMR_MCR_MR2R (1 << 7) /* Enable Reset of TC upon MR2 match */
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#define LPC214X_TMR_MCR_MR2S (1 << 8) /* Enable Stop of TC upon MR2 match */
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#define LPC214X_TMR_MCR_MR3I (1 << 9) /* Enable Interrupt when MR3 matches TC */
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#define LPC214X_TMR_MCR_MR3R (1 << 10) /* Enable Reset of TC upon MR3 match */
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#define LPC214X_TMR_MCR_MR3S (1 << 11) /* Enable Stop of TC upon MR3 match */
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/* Timer Match Register 0/1/2/3 (32-bits, no bit fields) */
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/* Timer Capture Control Register Bit Definitions */
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#define LPC214X_TMR_CCR_CAP0RE (1 << 0) /* Enable Rising edge on CAPn.0 will load TC to CR0 */
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#define LPC214X_TMR_CCR_CAP0FE (1 << 1) /* Enable Falling edge on CAPn.0 will load TC to CR0 */
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#define LPC214X_TMR_CCR_CAP0I (1 << 2) /* Enable Interrupt on load of CR0 */
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#define LPC214X_TMR_CCR_CAP1RE (1 << 3) /* Enable Rising edge on CAPn.1 will load TC to CR1 */
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#define LPC214X_TMR_CCR_CAP1FE (1 << 4) /* Enable Falling edge on CAPn.1 will load TC to CR1 */
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#define LPC214X_TMR_CCR_CAP1I (1 << 5) /* Enable Interrupt on load of CR1 */
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#define LPC214X_TMR_CCR_CAP2RE (1 << 6) /* Enable Rising edge on CAPn.2 will load TC to CR2 */
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#define LPC214X_TMR_CCR_CAP2FE (1 << 7) /* Enable Falling edge on CAPn.2 will load TC to CR2 */
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#define LPC214X_TMR_CCR_CAP2I (1 << 8) /* Enable Interrupt on load of CR2 */
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#define LPC214X_TMR_CCR_CAP3RE (1 << 9) /* Enable Rising edge on CAPn.3 will load TC to CR3 */
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#define LPC214X_TMR_CCR_CAP3FE (1 << 10) /* Enable Falling edge on CAPn.3 will load TC to CR3 */
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#define LPC214X_TMR_CCR_CAP3I (1 << 11) /* Enable Interrupt on load of CR3 */
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/* Timer Capture Register 0/1/2/3 (32-bits, no bit fields) */
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/* Timer External Match Register Bit Definitions */
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#define LPC214X_TMR_EMR_EM0 (1 << 0) /* External Match 0 */
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#define LPC214X_TMR_EMR_EM1 (1 << 1) /* External Match 1 */
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#define LPC214X_TMR_EMR_EM2 (1 << 2) /* External Match 2 */
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#define LPC214X_TMR_EMR_EM3 (1 << 3) /* External Match 3 */
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#define LPC214X_TMR_EMR_EMC0(b) ((b) << 4) /* External match control 0 (see below) */
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#define LPC214X_TMR_EMR_EMC1(b) ((b) << 6) /* External match control 1 (see below) */
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#define LPC214X_TMR_EMR_EMC2(b) ((b) << 8) /* External match control 2 (see below) */
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#define LPC214X_TMR_EMR_EMC3(b) ((b) << 10) /* External match control 3 (see below) */
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/* EMR External Match Control (EMCn) Field Falues */
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#define LPC214X_TMR_EMR_MASK (3) /* Mask for all bits */
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#define LPC214X_TMR_EMR_NOOP (0) /* Do nothing */
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#define LPC214X_TMR_EMR_CLEAR (1) /* Clear corresponding EMn bit/output to 0 */
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#define LPC214X_TMR_EMR_SET (2) /* Set corresponding EMn bit/output to 1 */
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#define LPC214X_TMR_EMR_TOGGLE (3) /* Toggle corresponding EMn bit/output */
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/* Timer Count Control Register Bit Definitions (8-bit) */
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#define LPC214X_TMR_
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#define LPC214X_TMR_CTCR_MODE_MASK (3 << 0) /* Counter/Timer Mode */
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#define LPC214X_TMR_CTCR_PCLK (0 << 0) /* Rising edge of PCLK */
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#define LPC214X_TMR_CTCR_RISING (1 << 0) /* Rising edge of CAP input */
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#define LPC214X_TMR_CTDR_FALLING (2 << 0) /* Failing edge of CAP input */
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#define LPC214X_TMR_CTCR_BOTH (3 << 0) /* Both edges of CAP input */
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#define LPC214X_TMR_CTCR_INPUT_MASK (3 << 2) /* Counter Input Select */
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#define LPC214X_TMR_CTCR_CR0 (0 << 2) /* CAPn.0 */
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#define LPC214X_TMR_CTCR_CR1 (1 << 2) /* CAPn.1 */
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#define LPC214X_TMR_CTCR_CR2 (2 << 2) /* CAPn.2 */
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#define LPC214X_TMR_CTCR_CR3 (3 << 2) /* CAPn.3 */
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/************************************************************************************
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* Inline Functions
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************************************************************************************/
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/************************************************************************************
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* Public Function Prototypes
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************************************************************************************/
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#endif /* __LPC214X_TIMER_H */
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