请问定时器唤醒的定时器初值如何设定

时间：10-02 整理：3721RD 点击：

请问定时器唤醒的定时器初值如何设定

分享hal_timer.c和hal_timer.h

/**************************************************************************************************
Filename: hal_timer.h
Revised: $Date: 2007-07-06 10:42:24 -0700 (Fri, 06 Jul 2007) $
Revision: $Revision: 13579 $

Description: This file contains the interface to the Timer Service.

IMPORTANT: Your use of this Software is limited to those specific rights
granted under the terms of a software license agreement between the user
who downloaded the software, his/her employer (which must be your employer)
and Texas Instruments Incorporated (the "License"). You may not use this
Software unless you agree to abide by the terms of the License. The License
limits your use, and you acknowledge, that the Software may not be modified,
copied or distributed unless embedded on a Texas Instruments microcontroller
or used solely and exclusively in conjunction with a Texas Instruments radio
frequency transceiver, which is integrated into your product. Other than for
the foregoing purpose, you may not use, reproduce, copy, prepare derivative
works of, modify, distribute, perform, display or sell this Software and/or
its documentation for any purpose.

YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
PROVIDED 揂S IS?WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT,
NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
(INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.

#ifndef HAL_TIMER_H
#define HAL_TIMER_H

#ifdef __cplusplus
extern "C"
{
#endif

/***************************************************************************************************
* INCLUDES
***************************************************************************************************/
#include "hal_board.h"

/***************************************************************************************************
* MACROS
***************************************************************************************************/

/***************************************************************************************************
* CONSTANTS
***************************************************************************************************/
/* Timer ID definitions */
#define HAL_TIMER_0 0x00 // 8bit timer
#define HAL_TIMER_1 0x01 // 16bit Mac timer
#define HAL_TIMER_2 0x02 // 8bit timer
#define HAL_TIMER_3 0x03 // 16bit timer
#define HAL_TIMER_MAX 4 // Max number of timer

/* Operation Modes for timer */
#define HAL_TIMER_MODE_NORMAL 0x01 // Normal Mode
#define HAL_TIMER_MODE_CTC 0x02 // Clear Timer On Compare
#define HAL_TIMER_MODE_MASK (HAL_TIMER_MODE_NORMAL | HAL_TIMER_MODE_CTC)

/* Channel definitions */
#define HAL_TIMER_CHANNEL_SINGLE 0x01 // Single Channel - default
#define HAL_TIMER_CHANNEL_A 0x02 // Channel A
#define HAL_TIMER_CHANNEL_B 0x04 // Channel B
#define HAL_TIMER_CHANNEL_C 0x08 // Channel C
#define HAL_TIMER_CHANNEL_MASK (HAL_TIMER_CHANNEL_SINGLE | \
HAL_TIMER_CHANNEL_A | \
HAL_TIMER_CHANNEL_B | \
HAL_TIMER_CHANNEL_C)

/* Channel mode definitions */
#define HAL_TIMER_CH_MODE_INPUT_CAPTURE 0x01 // Channel Mode Input-Capture
#define HAL_TIMER_CH_MODE_OUTPUT_COMPARE 0x02 // Channel Mode Output_Compare
#define HAL_TIMER_CH_MODE_OVERFLOW 0x04 // Channel Mode Overflow
#define HAL_TIMER_CH_MODE_MASK (HAL_TIMER_CH_MODE_INPUT_CAPTURE | \
HAL_TIMER_CH_MODE_OUTPUT_COMPARE | \
HAL_TIMER_CH_MODE_OVERFLOW)

/* Error Code */
#define HAL_TIMER_OK 0x00
#define HAL_TIMER_NOT_OK 0x01
#define HAL_TIMER_PARAMS_ERROR 0x02
#define HAL_TIMER_NOT_CONFIGURED 0x03
#define HAL_TIMER_INVALID_ID 0x04
#define HAL_TIMER_INVALID_CH_MODE 0x05
#define HAL_TIMER_INVALID_OP_MODE 0x06

/* Timer clock pre-scaler definitions for 16bit timer1 and timer3 */
#define HAL_TIMER3_16_TC_STOP 0x00 // No clock, timer stopped
#define HAL_TIMER3_16_TC_div1 0x01 // No clock pre-scaling
#define HAL_TIMER3_16_TC_div8 0x02 // Clock pre-scaled by 8
#define HAL_TIMER3_16_TC_div64 0x03 // Clock pre-scaled by 64
#define HAL_TIMER3_16_TC_div256 0x04 // Clock pre-scaled by 256
#define HAL_TIMER3_16_TC_div1024 0x05 // Clock pre-scaled by 1024
#define HAL_TIMER3_16_TC_EXTFE 0x06 // External clock (T2), falling edge
#define HAL_TIMER3_16_TC_EXTRE 0x07 // External clock (T2), rising edge

/* Timer clock pre-scaler definitions for 8bit timer0 and timer2 */
#define HAL_TIMER0_8_TC_STOP 0x00 // No clock, timer stopped
#define HAL_TIMER0_8_TC_div1 0x01 // No clock pre-scaling
#define HAL_TIMER0_8_TC_div8 0x02 // Clock pre-scaled by 8
#define HAL_TIMER0_8_TC_div32 0x03 // Clock pre-scaled by 32
#define HAL_TIMER0_8_TC_div64 0x04 // Clock pre-scaled by 64
#define HAL_TIMER0_8_TC_div128 0x05 // Clock pre-scaled by 128
#define HAL_TIMER0_8_TC_div256 0x06 // Clock pre-scaled by 256
#define HAL_TIMER0_8_TC_div1024 0x07 // Clock pre-scaled by 1024

/* Timer clock pre-scaler definitions for 8bit timer2 */
#define HAL_TIMER2_8_TC_STOP 0x00 // No clock, timer stopped
#define HAL_TIMER2_8_TC_div1 0x01 // No clock pre-scaling
#define HAL_TIMER2_8_TC_div8 0x02 // Clock pre-scaled by 8
#define HAL_TIMER2_8_TC_div64 0x03 // Clock pre-scaled by 32
#define HAL_TIMER2_8_TC_div256 0x04 // Clock pre-scaled by 64
#define HAL_TIMER2_8_TC_div1024 0x05 // Clock pre-scaled by 128
#define HAL_TIMER2_8_TC_EXTFE 0x06 // External clock (T2), falling edge
#define HAL_TIMER2_8_TC_EXTRE 0x07 // External clock (T2), rising edge

/***************************************************************************************************
* TYPEDEFS
***************************************************************************************************/
typedef void (*halTimerCBack_t) (uint8 timerId, uint8 channel, uint8 channelMode);

/***************************************************************************************************
* GLOBAL VARIABLES
***************************************************************************************************/

/***************************************************************************************************
* FUNCTIONS - API
***************************************************************************************************/

/*
* Initialize Timer Service
*/
extern void HalTimerInit ( void );

/*
* Configure channel in different modes
*/
extern uint8 HalTimerConfig ( uint8 timerId,
uint8 opMode,
uint8 channel,
uint8 channelMode,
bool intEnable,
halTimerCBack_t cback );

/*
* Start a Timer
*/
extern uint8 HalTimerStart ( uint8 timerId, uint32 timePerTick );

/*
* Stop a Timer
*/
extern uint8 HalTimerStop ( uint8 timerId );

/*
* This is used for polling, provide the tick increment
*/
extern void HalTimerTick ( void );

/*
* Enable and disable particular timer
*/
extern uint8 HalTimerInterruptEnable (uint8 timerId, uint8 channelMode, bool enable);

/***************************************************************************************************
***************************************************************************************************/

#ifdef __cplusplus
}
#endif

#endif

/////hal_timer.c////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

/**************************************************************************************************
Filename: hal_timer.c
Revised: $Date: 2009-03-12 16:25:22 -0700 (Thu, 12 Mar 2009) $
Revision: $Revision: 19404 $

Description: This file contains the interface to the Timer Service.

Should you have any questions regarding your right to use this Software,
contact Texas Instruments Incorporated at www.TI.com.
**************************************************************************************************/
/*********************************************************************
NOTE: The following mapping is done between the logical timer
names defined in HAL_TIMER.H and the physical HW timer.

HAL_TIMER_0 --> HW Timer 3 (8-bits)
HAL_TIMER_2 --> HW Timer 4 (8-bits)
HAL_TIMER_3 --> HW Timer 1 (16-bits)

NOTE: The timer code assumes only one channel, CHANNEL 0, is used
for each timer. There is currently no support for other
channels.

NOTE: Only Output Compare Mode is supported. There is no provision
to support Input Capture Mode.

NOTE: There is no support to map the output of the timers to a
physical I/O pin

*********************************************************************/
/*********************************************************************
* INCLUDES
*/
#include "hal_mcu.h"
#include "hal_defs.h"
#include "hal_types.h"
#include "hal_timer.h"

/*********************************************************************
* MACROS
*/

/*********************************************************************
* CONSTANTS
*/
#define HW_TIMER_1 0x00
#define HW_TIMER_3 0x01
#define HW_TIMER_4 0x02
#define HW_TIMER_INVALID 0x03
#define HW_TIMER_MAX 0x03

#define IEN1_T1IE 0x02 /* Timer1 Interrupt Enable */
#define IEN1_T3IE 0x08 /* Timer3 Interrupt Enable */
#define IEN1_T4IE 0x10 /* Timer4 Interrupt Enable */

#define T1CTL_CH2IF 0x80
#define T1CTL_CH1IF 0x40
#define T1CTL_CH0IF 0x20
#define T1CTL_OVFIF 0x10

#define TIMIF_T1OVFIM 0x40
#define TIMIF_T4CH1IF 0x20
#define TIMIF_T4CH0IF 0x10
#define TIMIF_T4OVFIF 0x08
#define TIMIF_T3CH1IF 0x04
#define TIMIF_T3CH0IF 0x02
#define TIMIF_T3OVFIF 0x01

#define T34CTL_OVFIM 0x80

#define T134CCTL_IM 0x40 /* Interrupt Mask */
#define T134CCTL_CMP_BITS 0x38 /* Bits[5:3] == CMP[2:0] */
#define T134CCTL_MODE 0x04 /* Capture(0)/Compare(1) mode */
#define T134CCTL_CAP_BITS 0x03 /* Bits[1:0] == CAP[1:0] */

#define T134CCTL_CMP_OC 0x18 /* Set output on compare, clear at 0 */
#define T134CCTL_CAP_RE 0x01 /* Set input capture on rising edge */

/* Timer clock pre-scaler definitions for 16bit timer1 */
#define HAL_TIMER1_16_TC_div1 0x00 /* No clock pre-scaling */
#define HAL_TIMER1_16_TC_div8 0x04 /* Clock pre-scaled by 8 */
#define HAL_TIMER1_16_TC_div32 0x08 /* Clock pre-scaled by 32 */
#define HAL_TIMER1_16_TC_div128 0x0c /* Clock pre-scaled by 128 */
#define HAL_TIMER1_16_TC_BITS 0x0c /* Bits 3:2 */

/* Timer clock pre-scaler definitions for 8bit timer3 and timer4 */
#define HAL_TIMER34_8_TC_div1 0x00 /* No clock pre-scaling */
#define HAL_TIMER34_8_TC_div2 0x20 /* Clock pre-scaled by 2 */
#define HAL_TIMER34_8_TC_div4 0x40 /* Clock pre-scaled by 4 */
#define HAL_TIMER34_8_TC_div8 0x60 /* Clock pre-scaled by 8 */
#define HAL_TIMER34_8_TC_div16 0x80 /* Clock pre-scaled by 16 */
#define HAL_TIMER34_8_TC_div32 0xA0 /* Clock pre-scaled by 32 */
#define HAL_TIMER34_8_TC_div64 0xC0 /* Clock pre-scaled by 64 */
#define HAL_TIMER34_8_TC_div128 0xE0 /* Clock pre-scaled by 128 */
#define HAL_TIMER34_8_TC_BITS 0xE0 /* Bits 7:5 */

/* Operation Mode definitions */
#define HAL_TIMER1_OPMODE_STOP 0x00 /* Free Running Mode, Count from 0 to Max */
#define HAL_TIMER1_OPMODE_FREERUN 0x01 /* Free Running Mode, Count from 0 to Max */
#define HAL_TIMER1_OPMODE_MODULO 0x02 /* Modulo Mode, Count from 0 to CompareValue */
#define HAL_TIMER1_OPMODE_BITS 0x03 /* Bits 1:0 */

#define HAL_TIMER34_START 0x10 /* Timer3 and Timer4 have separate Start bit */
#define HAL_TIMER34_OPMODE_FREERUN 0x00 /* Free Running Mode, Count from 0 to Max */
#define HAL_TIMER34_OPMODE_MODULO 0x02 /* Modulo Mode, Count from 0 to CompareValue */
#define HAL_TIMER34_OPMODE_BITS 0x03 /* Bits 1:0 */

#define HAL_TIMER_MODE_STOP 0x03

/* Prescale settings */
#define HAL_TIMER1_16_PRESCALE HAL_TIMER1_16_TC_div128
#define HAL_TIMER1_16_PRESCALE_VAL 128
#define HAL_TIMER3_8_PRESCALE HAL_TIMER34_8_TC_div128
#define HAL_TIMER3_8_PRESCALE_VAL 128
#define HAL_TIMER4_8_PRESCALE HAL_TIMER34_8_TC_div128
#define HAL_TIMER4_8_PRESCALE_VAL 128

/* Clock settings */
#define HAL_TIMER_16MHZ 16
#define HAL_TIMER_32MHZ 32

/* Default all timers to use channel 0 */
#define TCHN_T1CCTL &(X_T1CCTL0)
#define TCHN_T1CCL &(X_T1CC0L)
#define TCHN_T1CCH &(X_T1CC0H)
#define TCNH_T1OVF &(X_TIMIF)
#define TCHN_T1OVFBIT TIMIF_T1OVFIM
#define TCHN_T1INTBIT IEN1_T1IE

#define TCHN_T3CCTL &(X_T3CCTL0)
#define TCHN_T3CCL &(X_T3CC0)
#define TCHN_T3CCH &(X_T3CC0)
#define TCNH_T3OVF &(X_T3CTL)
#define TCHN_T3OVFBIT T34CTL_OVFIM
#define TCHN_T3INTBIT IEN1_T3IE

#define TCHN_T4CCTL &(X_T4CCTL0)
#define TCHN_T4CCL &(X_T4CC0)
#define TCHN_T4CCH &(X_T4CC0)
#define TCNH_T4OVF &(X_T4CTL)
#define TCHN_T4OVFBIT T34CTL_OVFIM
#define TCHN_T4INTBIT IEN1_T4IE

/*********************************************************************
* TYPEDEFS
*/
typedef struct
{
bool configured;
bool intEnable;
uint8 opMode;
uint8 channel;
uint8 channelMode;
uint8 prescale;
uint8 prescaleVal;
uint8 clock;
halTimerCBack_t callBackFunc;
} halTimerSettings_t;

typedef struct
{
uint8 volatile XDATA *TxCCTL;
uint8 volatile XDATA *TxCCH;
uint8 volatile XDATA *TxCCL;
uint8 volatile XDATA *TxOVF;
uint8 ovfbit;
uint8 intbit;
} halTimerChannel_t;

/*********************************************************************
* GLOBAL VARIABLES
*/
static halTimerSettings_t halTimerRecord[HW_TIMER_MAX];
static halTimerChannel_t halTimerChannel[HW_TIMER_MAX];

/*********************************************************************
* FUNCTIONS - External
*/

/*********************************************************************
* FUNCTIONS - Local
*/
uint8 halTimerSetCount (uint8 cc2430id, uint32 timePerTick);
uint8 halTimerSetPrescale (uint8 cc2430id, uint8 prescale);
uint8 halTimerSetOpMode (uint8 cc2430id, uint8 opMode);
uint8 halTimerSetChannelMode (uint8 cc2430id, uint8 channelMode);
void halTimerSendCallBack (uint8 timerId, uint8 channel, uint8 channelMode);
uint8 halTimerRemap (uint8 timerId);
void halProcessTimer1 (void);
void halProcessTimer3 (void);
void halProcessTimer4 (void);

/*********************************************************************
* FUNCTIONS - API
*/

/*********************************************************************
* @fn HalTimerInit
*
* @brief Initialize Timer Service
*
* @param None
*
* @return None
*/
void HalTimerInit (void)
{
T1CCTL0 = 0; /* Make sure interrupts are disabled */
T1CCTL1 = 0; /* Make sure interrupts are disabled */
T1CCTL2 = 0; /* Make sure interrupts are disabled */
T3CCTL0 = 0; /* Make sure interrupts are disabled */
T3CCTL1 = 0; /* Make sure interrupts are disabled */
T4CCTL0 = 0; /* Make sure interrupts are disabled */
T4CCTL1 = 0; /* Make sure interrupts are disabled */

/* Setup prescale & clock for timer0 */
halTimerRecord[HW_TIMER_1].prescale = HAL_TIMER1_16_PRESCALE;
halTimerRecord[HW_TIMER_1].clock = HAL_TIMER_32MHZ;
halTimerRecord[HW_TIMER_1].prescaleVal = HAL_TIMER1_16_PRESCALE_VAL;

/* Setup prescale & clock for timer2 */
halTimerRecord[HW_TIMER_3].prescale = HAL_TIMER3_8_PRESCALE;
halTimerRecord[HW_TIMER_3].clock = HAL_TIMER_32MHZ;
halTimerRecord[HW_TIMER_3].prescaleVal = HAL_TIMER3_8_PRESCALE_VAL;

/* Setup prescale & clock for timer3 */
halTimerRecord[HW_TIMER_4].prescale = HAL_TIMER4_8_PRESCALE;
halTimerRecord[HW_TIMER_4].clock = HAL_TIMER_32MHZ;
halTimerRecord[HW_TIMER_4].prescaleVal = HAL_TIMER4_8_PRESCALE_VAL;

/* Setup Timer1 Channel structure */
halTimerChannel[HW_TIMER_1].TxCCTL = TCHN_T1CCTL;
halTimerChannel[HW_TIMER_1].TxCCL = TCHN_T1CCL;
halTimerChannel[HW_TIMER_1].TxCCH = TCHN_T1CCH;
halTimerChannel[HW_TIMER_1].TxOVF = TCNH_T1OVF;
halTimerChannel[HW_TIMER_1].ovfbit = TCHN_T1OVFBIT;
halTimerChannel[HW_TIMER_1].intbit = TCHN_T1INTBIT;

/* Setup Timer3 Channel structure */
halTimerChannel[HW_TIMER_3].TxCCTL = TCHN_T3CCTL;
halTimerChannel[HW_TIMER_3].TxCCL = TCHN_T3CCL;
halTimerChannel[HW_TIMER_3].TxCCH = TCHN_T3CCH;
halTimerChannel[HW_TIMER_3].TxOVF = TCNH_T3OVF;
halTimerChannel[HW_TIMER_3].ovfbit = TCHN_T3OVFBIT;
halTimerChannel[HW_TIMER_3].intbit = TCHN_T3INTBIT;

/* Setup Timer4 Channel structure */
halTimerChannel[HW_TIMER_4].TxCCTL = TCHN_T4CCTL;
halTimerChannel[HW_TIMER_4].TxCCL = TCHN_T4CCL;
halTimerChannel[HW_TIMER_4].TxCCH = TCHN_T4CCH;
halTimerChannel[HW_TIMER_4].TxOVF = TCNH_T4OVF;
halTimerChannel[HW_TIMER_4].ovfbit = TCHN_T4OVFBIT;
halTimerChannel[HW_TIMER_4].intbit = TCHN_T4INTBIT;
}

/***************************************************************************************************
* @fn HalTimerConfig
*
* @brief Configure the Timer Serivce
*
* @param timerId - Id of the timer
* opMode - Operation mode
* channel - Channel where the counter operates on
* channelMode - Mode of that channel
* prescale - Prescale of the clock
* cBack - Pointer to the callback function
*
* @return Status of the configuration
***************************************************************************************************/
uint8 HalTimerConfig (uint8 timerId, uint8 opMode, uint8 channel, uint8 channelMode,
bool intEnable, halTimerCBack_t cBack)
{
uint8 hwtimerid;

hwtimerid = halTimerRemap (timerId);

if ((opMode & HAL_TIMER_MODE_MASK) && (timerId < HAL_TIMER_MAX) &&
(channelMode & HAL_TIMER_CHANNEL_MASK) && (channel & HAL_TIMER_CHANNEL_MASK))
{
halTimerRecord[hwtimerid].configured = TRUE;
halTimerRecord[hwtimerid].opMode = opMode;
halTimerRecord[hwtimerid].channel = channel;
halTimerRecord[hwtimerid].channelMode = channelMode;
halTimerRecord[hwtimerid].intEnable = intEnable;
halTimerRecord[hwtimerid].callBackFunc = cBack;
}
else
{
return HAL_TIMER_PARAMS_ERROR;
}
return HAL_TIMER_OK;
}

/***************************************************************************************************
* @fn HalTimerStart
*
* @brief Start the Timer Service
*
* @param timerId - ID of the timer
* timerPerTick - number of micro sec per tick, (ticks x prescale) / clock = usec/tick
*
* @return Status - OK or Not OK
***************************************************************************************************/
uint8 HalTimerStart (uint8 timerId, uint32 timePerTick)
{
uint8 hwtimerid;

hwtimerid = halTimerRemap (timerId);

if (halTimerRecord[hwtimerid].configured)
{
halTimerSetCount (hwtimerid, timePerTick);
halTimerSetPrescale (hwtimerid, halTimerRecord[hwtimerid].prescale);
halTimerSetOpMode (hwtimerid, halTimerRecord[hwtimerid].opMode);
halTimerSetChannelMode (hwtimerid, halTimerRecord[hwtimerid].channelMode);

if (hwtimerid == HW_TIMER_3)
{
T3CTL |= HAL_TIMER34_START;
}
if (hwtimerid == HW_TIMER_4)
{
T4CTL |= HAL_TIMER34_START;
}
HalTimerInterruptEnable (hwtimerid, halTimerRecord[hwtimerid].channelMode,
halTimerRecord[hwtimerid].intEnable);
}
else
{
return HAL_TIMER_NOT_CONFIGURED;
}
return HAL_TIMER_OK;
}

/***************************************************************************************************
* @fn HalTimerTick
*
* @brief Check the counter for expired counter.
*
* @param None
*
* @return None
***************************************************************************************************/
void HalTimerTick (void)
{
if (!halTimerRecord[HW_TIMER_1].intEnable)
{
halProcessTimer1 ();
}

if (!halTimerRecord[HW_TIMER_3].intEnable)
{
halProcessTimer3 ();
}

if (!halTimerRecord[HW_TIMER_4].intEnable)
{
halProcessTimer4 ();
}
}

/***************************************************************************************************
* @fn HalTimerStop
*
* @brief Stop the Timer Service
*
* @param timerId - ID of the timer
*
* @return Status - OK or Not OK
***************************************************************************************************/
uint8 HalTimerStop (uint8 timerId)
{
uint8 hwtimerid;

hwtimerid = halTimerRemap (timerId);

switch (hwtimerid)
{
case HW_TIMER_1:
halTimerSetOpMode(HW_TIMER_1, HAL_TIMER_MODE_STOP);
break;
case HW_TIMER_3:
T3CTL &= ~(HAL_TIMER34_START);
break;
case HW_TIMER_4:
T4CTL &= ~(HAL_TIMER34_START);
break;
default:
return HAL_TIMER_INVALID_ID;
}
return HAL_TIMER_OK;
}

/***************************************************************************************************
* @fn halTimerSetCount
*
* @brief Stop the Timer Service
*
* @param hwtimerid - ID of the timer
* timerPerTick - Number micro sec per ticks
*
* @return Status - OK or Not OK
***************************************************************************************************/
uint8 halTimerSetCount (uint8 hwtimerid, uint32 timePerTick)
{
uint16 count;
uint8 high, low;

/* Load count = ((sec/tick) x clock) / prescale */
count = (uint16)((timePerTick * halTimerRecord[hwtimerid].clock) / halTimerRecord[hwtimerid].prescaleVal);
high = (uint8) (count >> 8);
low = (uint8) count;

*(halTimerChannel[hwtimerid].TxCCH) = high;
*(halTimerChannel[hwtimerid].TxCCL) = low;

return HAL_TIMER_OK;
}

/***************************************************************************************************
* @fn halTimerSetPrescale
*
* @brief Stop the Timer Service
*
* @param hwtimerid - ID of the timer
* prescale - Prescale of the clock
*
* @return Status - OK or Not OK
***************************************************************************************************/
uint8 halTimerSetPrescale (uint8 hwtimerid, uint8 prescale)
{
switch (hwtimerid)
{
case HW_TIMER_1:
T1CTL &= ~(HAL_TIMER1_16_TC_BITS);
T1CTL |= prescale;
break;
case HW_TIMER_3:
T3CTL &= ~(HAL_TIMER34_8_TC_BITS);
T3CTL |= prescale;
break;
case HW_TIMER_4:
T4CTL &= ~(HAL_TIMER34_8_TC_BITS);
T4CTL |= prescale;
break;
default:
return HAL_TIMER_INVALID_ID;
}
return HAL_TIMER_OK;
}

/***************************************************************************************************
* @fn halTimerSetOpMode
*
* @brief Setup operate modes
*
* @param hwtimerid - ID of the timer
* opMode - operation mode of the timer
*
* @return Status - OK or Not OK
***************************************************************************************************/
uint8 halTimerSetOpMode (uint8 hwtimerid, uint8 opMode)
{
/* Load Waveform Generation Mode */
switch (opMode)
{
case HAL_TIMER_MODE_NORMAL:
switch (hwtimerid)
{
case HW_TIMER_1:
T1CTL &= ~(HAL_TIMER1_OPMODE_BITS);
T1CTL |= HAL_TIMER1_OPMODE_FREERUN;
break;
case HW_TIMER_3:
T3CTL &= ~(HAL_TIMER34_OPMODE_BITS);
T3CTL |= HAL_TIMER34_OPMODE_FREERUN;
break;
case HW_TIMER_4:
T4CTL &= ~(HAL_TIMER34_OPMODE_BITS);
T4CTL |= HAL_TIMER34_OPMODE_FREERUN;
break;
default:
return HAL_TIMER_INVALID_ID;
}
break;

case HAL_TIMER_MODE_CTC:
switch (hwtimerid)
{
case HW_TIMER_1:
T1CTL &= ~(HAL_TIMER1_OPMODE_BITS);
T1CTL |= HAL_TIMER1_OPMODE_MODULO;
break;
case HW_TIMER_3:
T3CTL &= ~(HAL_TIMER34_OPMODE_BITS);
T3CTL |= HAL_TIMER34_OPMODE_MODULO;
break;
case HW_TIMER_4:
T4CTL &= ~(HAL_TIMER34_OPMODE_BITS);
T4CTL |= HAL_TIMER34_OPMODE_MODULO;
break;
default:
return HAL_TIMER_INVALID_ID;
}
break;

case HAL_TIMER_MODE_STOP:
if (hwtimerid == HW_TIMER_1)
{
T1CTL &= ~(HAL_TIMER1_OPMODE_BITS);
T1CTL |= HAL_TIMER1_OPMODE_STOP;
}
break;

default:
return HAL_TIMER_INVALID_OP_MODE;
}
return HAL_TIMER_OK;
}

/***************************************************************************************************
* @fn halTimerSetChannelMode
*
* @brief Setup channel modes. Currently, only output compare mode is supported. Input capture
* mode is NOT supported. Additionally, mapping timer channel inputs/outputs to I/O pins
* is NOT supported.
*
* @param hwtimerid - ID of the timer
* channelMode - channel mode of the timer
*
* @return Status - OK or Not OK
***************************************************************************************************/
uint8 halTimerSetChannelMode (uint8 hwtimerid, uint8 channelMode)
{
switch (channelMode)
{
case HAL_TIMER_CH_MODE_OUTPUT_COMPARE:
*(halTimerChannel[hwtimerid].TxCCTL) &= ~(T134CCTL_CMP_BITS);
*(halTimerChannel[hwtimerid].TxCCTL) |= (T134CCTL_CMP_OC | T134CCTL_MODE);
break;

case HAL_TIMER_CH_MODE_INPUT_CAPTURE: /* Not Supported */
/*
*(halTimerChannel[hwtimerid].TxCCTL) &= ~(T134CCTL_CAP_BITS | T134CCTL_MODE);
*(halTimerChannel[hwtimerid].TxCCTL) |= T134CCTL_CAP_RE;
*/
break;

default:
return HAL_TIMER_INVALID_CH_MODE;
}
return HAL_TIMER_OK;
}

/***************************************************************************************************
* @fn HalTimerInterruptEnable
*
* @brief Setup operate modes
*
* @param hwtimerid - ID of the timer
* channelMode - channel mode
* enable - TRUE or FALSE
*
* @return Status - OK or Not OK
***************************************************************************************************/
uint8 HalTimerInterruptEnable (uint8 hwtimerid, uint8 channelMode, bool enable)
{
switch (channelMode)
{
case HAL_TIMER_CH_MODE_OVERFLOW:

if (enable)
{
*(halTimerChannel[hwtimerid].TxOVF) |= halTimerChannel[hwtimerid].ovfbit;
}
else
{
*(halTimerChannel[hwtimerid].TxOVF) &= ((halTimerChannel[hwtimerid].ovfbit) ^ 0xFF);
}
break;

case HAL_TIMER_CH_MODE_OUTPUT_COMPARE:
case HAL_TIMER_CH_MODE_INPUT_CAPTURE:

if (enable)
{
*(halTimerChannel[hwtimerid].TxCCTL) |= T134CCTL_IM;
}
else
{
*(halTimerChannel[hwtimerid].TxCCTL) &= ~(T134CCTL_IM);
}
break;

default:
return HAL_TIMER_INVALID_CH_MODE;
}

if (halTimerRecord[hwtimerid].intEnable)
{
IEN1 |= halTimerChannel[hwtimerid].intbit;
}
else
{
IEN1 &= ((halTimerChannel[hwtimerid].intbit) ^ 0xFF);
}
return HAL_TIMER_OK;
}

/***************************************************************************************************
* @fn halTimerSendCallBack
*
* @brief Send Callback back to the caller
*
* @param timerId - ID of the timer
* channel - channel where the interrupt occurs
* channelMode - channel mode
*
*
* @return None
***************************************************************************************************/
void halTimerSendCallBack (uint8 timerId, uint8 channel, uint8 channelMode)
{
uint8 hwtimerid;

hwtimerid = halTimerRemap (timerId);

if (halTimerRecord[hwtimerid].callBackFunc)
(halTimerRecord[hwtimerid].callBackFunc) (timerId, channel, channelMode);
}

/***************************************************************************************************
* @fn halTimerRemap
*
* @brief Maps API HAL_TIMER_ID to HW Timer ID.
* HAL_TIMER_0 --> HW Timer 3 8bit
* HAL_TIMER_2 --> HW Timer 4 8bit
* HAL_TIMER_3 --> HW Timer 1 16bit
*
* @param timerId - ID of the timer
*
* @return HW timer ID
***************************************************************************************************/
uint8 halTimerRemap (uint8 timerId)
{
switch (timerId)
{
case HAL_TIMER_0:
return HW_TIMER_3;
case HAL_TIMER_2:
return HW_TIMER_4;
case HAL_TIMER_3:
return HW_TIMER_1;
default:
return HW_TIMER_INVALID;
}
}

/***************************************************************************************************
* @fn halProcessTimer1
*
* @brief Processes Timer 1 Events.
*
* @param
*
* @return
***************************************************************************************************/
void halProcessTimer1 (void)
{
if (halTimerRecord[halTimerRemap(HAL_TIMER_3)].channelMode == HAL_TIMER_CH_MODE_OUTPUT_COMPARE)
{
if (T1CTL & T1CTL_CH0IF)
{
T1CTL &= ~(T1CTL_CH0IF);
halTimerSendCallBack (HAL_TIMER_3, HAL_TIMER_CHANNEL_A, HAL_TIMER_CH_MODE_OUTPUT_COMPARE);
}
if (T1CTL & T1CTL_CH1IF)
{
T1CTL &= ~(T1CTL_CH1IF);
halTimerSendCallBack (HAL_TIMER_3, HAL_TIMER_CHANNEL_B, HAL_TIMER_CH_MODE_OUTPUT_COMPARE);
}
if (T1CTL & T1CTL_CH2IF)
{
T1CTL &= ~(T1CTL_CH2IF);
halTimerSendCallBack (HAL_TIMER_3, HAL_TIMER_CHANNEL_C, HAL_TIMER_CH_MODE_OUTPUT_COMPARE);
}
}
else if (halTimerRecord[halTimerRemap(HAL_TIMER_3)].channelMode == HAL_TIMER_CH_MODE_OVERFLOW)
{
if (T1CTL & T1CTL_OVFIF)
{
T1CTL &= ~(T1CTL_OVFIF);
halTimerSendCallBack (HAL_TIMER_3, HAL_TIMER_CHANNEL_SINGLE, HAL_TIMER_CH_MODE_OVERFLOW);
}
}
}

/***************************************************************************************************
* @fn halProcessTimer3
*
* @brief Processes Timer 3 Events.
*
* @param
*
* @return
***************************************************************************************************/
void halProcessTimer3 (void)
{
if (halTimerRecord[halTimerRemap(HAL_TIMER_0)].channelMode == HAL_TIMER_CH_MODE_OUTPUT_COMPARE)
{
if (TIMIF & TIMIF_T3CH0IF)
{
TIMIF &= ~(TIMIF_T3CH0IF);
halTimerSendCallBack (HAL_TIMER_0, HAL_TIMER_CHANNEL_A, HAL_TIMER_CH_MODE_OUTPUT_COMPARE);
}
if (TIMIF & TIMIF_T3CH1IF)
{
TIMIF &= ~(TIMIF_T3CH1IF);
halTimerSendCallBack (HAL_TIMER_0, HAL_TIMER_CHANNEL_B, HAL_TIMER_CH_MODE_OUTPUT_COMPARE);
}
}
else if (halTimerRecord[halTimerRemap(HAL_TIMER_0)].channelMode == HAL_TIMER_CH_MODE_OVERFLOW)
{
if (TIMIF & TIMIF_T3OVFIF)
{
TIMIF &= ~(TIMIF_T3OVFIF);
halTimerSendCallBack (HAL_TIMER_0, HAL_TIMER_CHANNEL_SINGLE, HAL_TIMER_CH_MODE_OVERFLOW);
}
}
}

/***************************************************************************************************
* @fn halProcessTimer4
*
* @brief Processes Timer 4 Events.
*
* @param
*
* @return
***************************************************************************************************/
void halProcessTimer4 (void)
{
if (halTimerRecord[halTimerRemap(HAL_TIMER_2)].channelMode == HAL_TIMER_CH_MODE_OUTPUT_COMPARE)
{
if (TIMIF & TIMIF_T4CH0IF)
{
TIMIF &= ~(TIMIF_T4CH0IF);
halTimerSendCallBack (HAL_TIMER_2, HAL_TIMER_CHANNEL_A, HAL_TIMER_CH_MODE_OUTPUT_COMPARE);
}
if (TIMIF & TIMIF_T4CH1IF)
{
TIMIF &= ~(TIMIF_T4CH1IF);
halTimerSendCallBack (HAL_TIMER_2, HAL_TIMER_CHANNEL_B, HAL_TIMER_CH_MODE_OUTPUT_COMPARE);
}
}
else if (halTimerRecord[halTimerRemap(HAL_TIMER_2)].channelMode == HAL_TIMER_CH_MODE_OVERFLOW)
if (TIMIF & TIMIF_T4OVFIF)
{
TIMIF &= ~(TIMIF_T4OVFIF);
halTimerSendCallBack (HAL_TIMER_2, HAL_TIMER_CHANNEL_SINGLE, HAL_TIMER_CH_MODE_OVERFLOW);
}
}

/***************************************************************************************************
* INTERRUPT SERVICE ROUTINE
***************************************************************************************************/

/**************************************************************************************************
* @fn halTimer1Isr
*
* @brief Timer 1 ISR
*
* @param
*
* @return
**************************************************************************************************/
HAL_ISR_FUNCTION( halTimer1Isr, T1_VECTOR )
{
halProcessTimer1 ();
}

/**************************************************************************************************
* @fn halTimer3Isr
*
* @brief Timer 3 ISR
*
* @param
*
* @return
**************************************************************************************************/
HAL_ISR_FUNCTION( halTimer3Isr, T3_VECTOR )
{
halProcessTimer3 ();
}

/**************************************************************************************************
* @fn halTimer4Isr
*
* @brief Timer 4 ISR
*
* @param
*
* @return
**************************************************************************************************/
HAL_ISR_FUNCTION( halTimer4Isr, T4_VECTOR )
{
halProcessTimer4 ();
}

上一篇：大家好！请问CC2530 I/O口能接受的输入电压是多少？
下一篇：一个ZED和两个ZC网络自动跳转问题

定时器唤醒初值相关文章：

栏目分类