2024-07-04 20:19:46 +08:00

216 lines
6.9 KiB
C

/*******************************************************************************
Timer/Counter(TC0) PLIB
Company
Microchip Technology Inc.
File Name
plib_tc0.c
Summary
TC0 PLIB Implementation File.
Description
This file defines the interface to the TC peripheral library. This
library provides access to and control of the associated peripheral
instance.
Remarks:
None.
*******************************************************************************/
// DOM-IGNORE-BEGIN
/*******************************************************************************
* Copyright (C) 2018 Microchip Technology Inc. and its subsidiaries.
*
* Subject to your compliance with these terms, you may use Microchip software
* and any derivatives exclusively with Microchip products. It is your
* responsibility to comply with third party license terms applicable to your
* use of third party software (including open source software) that may
* accompany Microchip software.
*
* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, WHETHER
* EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY IMPLIED
* WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE,
* INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND
* WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS
* BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE
* FULLEST EXTENT ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN
* ANY WAY RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
*******************************************************************************/
// DOM-IGNORE-END
// *****************************************************************************
// *****************************************************************************
// Section: Included Files
// *****************************************************************************
// *****************************************************************************
/* This section lists the other files that are included in this file.
*/
#include "interrupts.h"
#include "plib_tc0.h"
// *****************************************************************************
// *****************************************************************************
// Section: Global Data
// *****************************************************************************
// *****************************************************************************
volatile static TC_TIMER_CALLBACK_OBJ TC0_CallbackObject;
// *****************************************************************************
// *****************************************************************************
// Section: TC0 Implementation
// *****************************************************************************
// *****************************************************************************
// *****************************************************************************
/* Initialize the TC module in Timer mode */
void TC0_TimerInitialize( void )
{
/* Reset TC */
TC0_REGS->COUNT16.TC_CTRLA = TC_CTRLA_SWRST_Msk;
while((TC0_REGS->COUNT16.TC_SYNCBUSY & TC_SYNCBUSY_SWRST_Msk) == TC_SYNCBUSY_SWRST_Msk)
{
/* Wait for Write Synchronization */
}
/* Configure counter mode & prescaler */
TC0_REGS->COUNT16.TC_CTRLA = TC_CTRLA_MODE_COUNT16 | TC_CTRLA_PRESCALER_DIV1 | TC_CTRLA_PRESCSYNC_PRESC ;
/* Configure in Match Frequency Mode */
TC0_REGS->COUNT16.TC_WAVE = (uint8_t)TC_WAVE_WAVEGEN_MPWM;
/* Configure timer period */
TC0_REGS->COUNT16.TC_CC[0U] = 80U;
/* Clear all interrupt flags */
TC0_REGS->COUNT16.TC_INTFLAG = (uint8_t)TC_INTFLAG_Msk;
TC0_CallbackObject.callback = NULL;
/* Enable interrupt*/
TC0_REGS->COUNT16.TC_INTENSET = (uint8_t)(TC_INTENSET_OVF_Msk);
while((TC0_REGS->COUNT16.TC_SYNCBUSY) != 0U)
{
/* Wait for Write Synchronization */
}
}
/* Enable the TC counter */
void TC0_TimerStart( void )
{
TC0_REGS->COUNT16.TC_CTRLA |= TC_CTRLA_ENABLE_Msk;
while((TC0_REGS->COUNT16.TC_SYNCBUSY & TC_SYNCBUSY_ENABLE_Msk) == TC_SYNCBUSY_ENABLE_Msk)
{
/* Wait for Write Synchronization */
}
}
/* Disable the TC counter */
void TC0_TimerStop( void )
{
TC0_REGS->COUNT16.TC_CTRLA &= ~TC_CTRLA_ENABLE_Msk;
while((TC0_REGS->COUNT16.TC_SYNCBUSY & TC_SYNCBUSY_ENABLE_Msk) == TC_SYNCBUSY_ENABLE_Msk)
{
/* Wait for Write Synchronization */
}
}
uint32_t TC0_TimerFrequencyGet( void )
{
return (uint32_t)(1000000U);
}
void TC0_TimerCommandSet(TC_COMMAND command)
{
TC0_REGS->COUNT16.TC_CTRLBSET = (uint8_t)((uint32_t)command << TC_CTRLBSET_CMD_Pos);
while((TC0_REGS->COUNT16.TC_SYNCBUSY) != 0U)
{
/* Wait for Write Synchronization */
}
}
/* Get the current timer counter value */
uint16_t TC0_Timer16bitCounterGet( void )
{
/* Write command to force COUNT register read synchronization */
TC0_REGS->COUNT16.TC_CTRLBSET |= (uint8_t)TC_CTRLBSET_CMD_READSYNC;
while((TC0_REGS->COUNT16.TC_SYNCBUSY & TC_SYNCBUSY_CTRLB_Msk) == TC_SYNCBUSY_CTRLB_Msk)
{
/* Wait for Write Synchronization */
}
while((TC0_REGS->COUNT16.TC_CTRLBSET & TC_CTRLBSET_CMD_Msk) != 0U)
{
/* Wait for CMD to become zero */
}
/* Read current count value */
return (uint16_t)TC0_REGS->COUNT16.TC_COUNT;
}
/* Configure timer counter value */
void TC0_Timer16bitCounterSet( uint16_t count )
{
TC0_REGS->COUNT16.TC_COUNT = count;
while((TC0_REGS->COUNT16.TC_SYNCBUSY & TC_SYNCBUSY_COUNT_Msk) == TC_SYNCBUSY_COUNT_Msk)
{
/* Wait for Write Synchronization */
}
}
/* Configure timer period */
void TC0_Timer16bitPeriodSet( uint16_t period )
{
TC0_REGS->COUNT16.TC_CC[0] = period;
while((TC0_REGS->COUNT16.TC_SYNCBUSY & TC_SYNCBUSY_CC0_Msk) == TC_SYNCBUSY_CC0_Msk)
{
/* Wait for Write Synchronization */
}
}
/* Read the timer period value */
uint16_t TC0_Timer16bitPeriodGet( void )
{
return (uint16_t)TC0_REGS->COUNT16.TC_CC[0];
}
/* Register callback function */
void TC0_TimerCallbackRegister( TC_TIMER_CALLBACK callback, uintptr_t context )
{
TC0_CallbackObject.callback = callback;
TC0_CallbackObject.context = context;
}
/* Timer Interrupt handler */
void TC0_TimerInterruptHandler( void )
{
if (TC0_REGS->COUNT16.TC_INTENSET != 0U)
{
TC_TIMER_STATUS status;
status = (TC_TIMER_STATUS) TC0_REGS->COUNT16.TC_INTFLAG;
/* Clear interrupt flags */
TC0_REGS->COUNT16.TC_INTFLAG = (uint8_t)TC_INTFLAG_Msk;
if((status != TC_TIMER_STATUS_NONE) && (TC0_CallbackObject.callback != NULL))
{
uintptr_t context = TC0_CallbackObject.context;
TC0_CallbackObject.callback(status, context);
}
}
}