lpc214x_timer.h

這是一個實時嵌入式作業系統 實作了MCS51 ARM等MCU

/************************************************************************************
 * lpc214x/lpc214x_timer.h
 *
 *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <[e-mail]>
 *
 * 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.
 * 3. Neither the name Gregory Nutt nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * 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 OWNER 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 __LPC214X_TIMER_H
#define __LPC214X_TIMER_H

/************************************************************************************
 * Included Files
 ************************************************************************************/

/************************************************************************************
 * Definitions
 ************************************************************************************/

/* Timer registers are 8-, 16-bit and 32-bits wide */

/* Timer Interrupt Register Bit Definitions (8-bit) */

#define LPC214X_TMR_IR_MR0I          (1 << 0)  /* Interrupt flag for match channel 0 */
#define LPC214X_TMR_IR_MR1I          (1 << 1)  /* Interrupt flag for match channel 1 */
#define LPC214X_TMR_IR_MR2I          (1 << 2)  /* Interrupt flag for match channel 2 */
#define LPC214X_TMR_IR_MR3I          (1 << 3)  /* Interrupt flag for match channel 3 */
#define LPC214X_TMR_IR_CR0I          (1 << 4)  /* Interrupt flag for capture channel 0 event */
#define LPC214X_TMR_IR_CR1I          (1 << 5)  /* Interrupt flag for capture channel 1 event */
#define LPC214X_TMR_IR_CR2I          (1 << 6)  /* Interrupt flag for capture channel 2 event */
#define LPC214X_TMR_IR_CR3I          (1 << 7)  /* Interrupt flag for capture channel 3 event */
#define LPC214X_TMR_IR_ALLI          (0xff)    /* All timer interrupts */

/* Timer Control Register Bit Definitions (8-bits) */

#define LPC214X_TMR_CR_ENABLE        (1 << 0)  /* Counter Enable */
#define LPC214X_TMR_CR_RESET         (1 << 1)  /* Countger Reset */

/* Timer Counter (32-bits, no bit fields) */

/* Timer Prescale Register Bit Definitions (32-bits, no bit fields) */

/* Timer Prescale Counter Register Bit Definitions */

/* Timer Match Control Register Bit Definitions (16-bit) */

#define LPC214X_TMR_MCR_MR0I         (1 <<  0) /* Enable Interrupt when MR0 matches TC */
#define LPC214X_TMR_MCR_MR0R         (1 <<  1) /* Enable Reset of TC upon MR0 match */
#define LPC214X_TMR_MCR_MR0S         (1 <<  2) /* Enable Stop of TC upon MR0 match */
#define LPC214X_TMR_MCR_MR1I         (1 <<  3) /* Enable Interrupt when MR1 matches TC */
#define LPC214X_TMR_MCR_MR1R         (1 <<  4) /* Enable Reset of TC upon MR1 match */
#define LPC214X_TMR_MCR_MR1S         (1 <<  5) /* Enable Stop of TC upon MR1 match */
#define LPC214X_TMR_MCR_MR2I         (1 <<  6) /* Enable Interrupt when MR2 matches TC */
#define LPC214X_TMR_MCR_MR2R         (1 <<  7) /* Enable Reset of TC upon MR2 match */
#define LPC214X_TMR_MCR_MR2S         (1 <<  8) /* Enable Stop of TC upon MR2 match */
#define LPC214X_TMR_MCR_MR3I         (1 <<  9) /* Enable Interrupt when MR3 matches TC */
#define LPC214X_TMR_MCR_MR3R         (1 << 10) /* Enable Reset of TC upon MR3 match */
#define LPC214X_TMR_MCR_MR3S         (1 << 11) /* Enable Stop of TC upon MR3 match */

/* Timer Match Register 0/1/2/3 (32-bits, no bit fields) */

/* Timer Capture Control Register Bit Definitions */

#define LPC214X_TMR_CCR_CAP0RE       (1 <<  0) /* Enable Rising edge on CAPn.0 will load TC to CR0 */
#define LPC214X_TMR_CCR_CAP0FE       (1 <<  1) /* Enable Falling edge on CAPn.0 will load TC to CR0 */
#define LPC214X_TMR_CCR_CAP0I        (1 <<  2) /* Enable Interrupt on load of CR0 */
#define LPC214X_TMR_CCR_CAP1RE       (1 <<  3) /* Enable Rising edge on CAPn.1 will load TC to CR1 */
#define LPC214X_TMR_CCR_CAP1FE       (1 <<  4) /* Enable Falling edge on CAPn.1 will load TC to CR1 */
#define LPC214X_TMR_CCR_CAP1I        (1 <<  5) /* Enable Interrupt on load of CR1 */
#define LPC214X_TMR_CCR_CAP2RE       (1 <<  6) /* Enable Rising edge on CAPn.2 will load TC to CR2 */
#define LPC214X_TMR_CCR_CAP2FE       (1 <<  7) /* Enable Falling edge on CAPn.2 will load TC to CR2 */
#define LPC214X_TMR_CCR_CAP2I        (1 <<  8) /* Enable Interrupt on load of CR2 */
#define LPC214X_TMR_CCR_CAP3RE       (1 <<  9) /* Enable Rising edge on CAPn.3 will load TC to CR3 */
#define LPC214X_TMR_CCR_CAP3FE       (1 << 10) /* Enable Falling edge on CAPn.3 will load TC to CR3 */
#define LPC214X_TMR_CCR_CAP3I        (1 << 11) /* Enable Interrupt on load of CR3 */

/* Timer Capture Register 0/1/2/3 (32-bits, no bit fields) */

/* Timer External Match Register Bit Definitions */

#define LPC214X_TMR_EMR_EM0          (1 <<  0) /* External Match 0 */
#define LPC214X_TMR_EMR_EM1          (1 <<  1) /* External Match 1 */
#define LPC214X_TMR_EMR_EM2          (1 <<  2) /* External Match 2 */
#define LPC214X_TMR_EMR_EM3          (1 <<  3) /* External Match 3 */

#define LPC214X_TMR_EMR_EMC0(b)      ((b) <<  4)  /* External match control 0 (see below) */
#define LPC214X_TMR_EMR_EMC1(b)      ((b) <<  6)  /* External match control 1 (see below) */
#define LPC214X_TMR_EMR_EMC2(b)      ((b) <<  8)  /* External match control 2 (see below) */
#define LPC214X_TMR_EMR_EMC3(b)      ((b) << 10)  /* External match control 3 (see below) */

/* EMR External Match Control (EMCn) Field Falues */

#define LPC214X_TMR_EMR_MASK         (3)       /* Mask for all bits */
#define LPC214X_TMR_EMR_NOOP         (0)       /* Do nothing */
#define LPC214X_TMR_EMR_CLEAR        (1)       /* Clear corresponding EMn bit/output to 0 */
#define LPC214X_TMR_EMR_SET          (2)       /* Set corresponding EMn bit/output to 1 */
#define LPC214X_TMR_EMR_TOGGLE       (3)       /* Toggle corresponding EMn bit/output */

/* Timer Count Control Register Bit Definitions (8-bit) */

#define LPC214X_TMR_
#define LPC214X_TMR_CTCR_MODE_MASK   (3 << 0) /* Counter/Timer Mode */
#define   LPC214X_TMR_CTCR_PCLK      (0 << 0) /*   Rising edge of PCLK */
#define   LPC214X_TMR_CTCR_RISING    (1 << 0) /*   Rising edge of CAP input */
#define   LPC214X_TMR_CTDR_FALLING   (2 << 0) /*   Failing edge of CAP input */
#define   LPC214X_TMR_CTCR_BOTH      (3 << 0) /*   Both edges of CAP input */
#define LPC214X_TMR_CTCR_INPUT_MASK  (3 << 2) /* Counter Input Select */
#define   LPC214X_TMR_CTCR_CR0       (0 << 2) /*   CAPn.0 */
#define   LPC214X_TMR_CTCR_CR1       (1 << 2) /*   CAPn.1 */
#define   LPC214X_TMR_CTCR_CR2       (2 << 2) /*   CAPn.2 */
#define   LPC214X_TMR_CTCR_CR3       (3 << 2) /*   CAPn.3 */

/************************************************************************************
 * Public Types
 ************************************************************************************/

/************************************************************************************
 * Inline Functions
 ************************************************************************************/

/************************************************************************************
 * Public Function Prototypes
 ************************************************************************************/

#endif  /* __LPC214X_TIMER_H */