dmt.c

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/*
© [2024] 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. 
    You are responsible for complying with 3rd party license terms  
    applicable to your use of 3rd party software (including open source  
    software) that may accompany Microchip software. SOFTWARE IS ?AS IS.? 
    NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS 
    SOFTWARE, INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT,  
    MERCHANTABILITY, OR 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 
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    TOTAL LIABILITY ON ALL CLAIMS RELATED TO THE SOFTWARE WILL NOT 
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*/
 
// Section: Included Files
#include <xc.h>
#include <stddef.h>
#include "../dmt.h"
#include "../interrupt.h"
 
// Section: Private Variable Definitions
static bool bPreCleared = false;
uint32_t calibOffset = 0;
static void (*DMT_EventHandler)(void) = NULL;
 
// Section: File specific functions
 
void DMT_Calibrate(void);
 
// Section: DMT Module APIs
void DMT_Initialize(void)
{  
    INTERRUPT_GlobalDisable();
    DMT_Calibrate();
    INTERRUPT_GlobalEnable();
    
    DMT_EventCallbackRegister(&DMT_EventCallback);
 
    IEC2bits.DMTIE = 1U;
}
 
void DMT_Enable(void)
{   
    // Set the Bit ON = 1
    DMTCON = 0x8000;
}
 
void DMT_PreClear(void)
{
    DMTPRECLR =  0x4000;  
  
    // To keep track of Preclear operation is performed
    bPreCleared = true;
}
 
void DMT_Clear(void)
{
    bPreCleared = false;
    while((DMTSTAT & 0x0001) != 0x0001)
    {
    }
    
    DMTCLR = 0x0008;
}
 
bool DMT_IsWindowOpen(void)
{
    bool status = false;
    
    if((DMTSTAT & 0x0001) == 0x0001)
    {
        status = true;
    }
    
    return status;    
}
 
bool DMT_IsPreCleared(void)
{
    return bPreCleared;
}
 
uint32_t DMT_TimeoutCounterGet(void)
{
    uint32_t counter = 0;    
    counter = (uint32_t)(DMTPSCNTH & 0x0000FFFF) << 16;    
    return (counter | DMTPSCNTL);
}
 
uint32_t DMT_WindowTimeoutCounterGet(void) 
{    
    uint32_t winTimeoutCounter = 0;    
    winTimeoutCounter = (uint32_t)(DMTPSINTVH & 0x0000FFFF) << 16;    
    return (winTimeoutCounter | DMTPSINTVL);
}
 
uint16_t DMT_StatusGet(void) 
{   
    uint16_t status = 0;
    status = (uint16_t)(DMTSTAT & 0xE1);
    return status;
}
 
uint32_t DMT_CounterGet(void)
{   
    uint32_t counter = 0;    
    counter = (uint32_t)(DMTCNTH & 0x0000FFFF) << 16;
    return (counter | DMTCNTL);
}
 
void DMT_EventCallbackRegister(void (*handler)(void))
{
    if(NULL != handler)
    {
        DMT_EventHandler = handler;
    }
}
 
void __attribute__ ((weak)) DMT_EventCallback( void )
{ 
 
} 
 
 
void __attribute__ ((interrupt, no_auto_psv)) _DMTInterrupt(void)
{
    if(NULL != DMT_EventHandler)
    {
        (*DMT_EventHandler)();
    }
    IFS2bits.DMTIF = 0U;
}