167 lines
4.0 KiB
C
167 lines
4.0 KiB
C
/**
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TMR0 Generated Driver File
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@Company
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Microchip Technology Inc.
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@File Name
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tmr0.c
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@Summary
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This is the generated driver implementation file for the TMR0 driver using PIC10 / PIC12 / PIC16 / PIC18 MCUs
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@Description
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This source file provides APIs for TMR0.
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Generation Information :
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Product Revision : PIC10 / PIC12 / PIC16 / PIC18 MCUs - 1.81.8
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Device : PIC18F97J60
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Driver Version : 2.01
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The generated drivers are tested against the following:
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Compiler : XC8 2.36 and above
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MPLAB : MPLAB X 6.00
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*/
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/*
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(c) 2018 Microchip Technology Inc. and its subsidiaries.
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Subject to your compliance with these terms, you may use Microchip software and any
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derivatives exclusively with Microchip products. It is your responsibility to comply with third party
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license terms applicable to your use of third party software (including open source software) that
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may accompany Microchip software.
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THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, WHETHER
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EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY
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IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS
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FOR A PARTICULAR PURPOSE.
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IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE,
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INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND
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WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP
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HAS BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO
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THE FULLEST EXTENT ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL
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CLAIMS IN ANY WAY RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT
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OF FEES, IF ANY, THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS
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SOFTWARE.
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*/
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/**
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Section: Included Files
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*/
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#include <xc.h>
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#include "tmr0.h"
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/**
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Section: Global Variables Definitions
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*/
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void (*TMR0_InterruptHandler)(void);
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volatile uint16_t timer0ReloadVal;
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/**
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Section: TMR0 APIs
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*/
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void TMR0_Initialize(void)
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{
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// Set TMR0 to the options selected in the User Interface
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//Enable 16bit timer mode before assigning value to TMR0H
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T0CONbits.T08BIT = 0;
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// TMR0H 255;
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TMR0H = 0xFF;
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// TMR0L 252;
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TMR0L = 0xFC;
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// Load TMR0 value to the 16-bit reload variable
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timer0ReloadVal = (uint16_t)((TMR0H << 8) | TMR0L);
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// Clear Interrupt flag before enabling the interrupt
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INTCONbits.TMR0IF = 0;
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// Enabling TMR0 interrupt.
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INTCONbits.TMR0IE = 1;
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// Set Default Interrupt Handler
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TMR0_SetInterruptHandler(TMR0_DefaultInterruptHandler);
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// T0PS 1:2; T08BIT 16-bit; T0SE Increment_hi_lo; T0CS T0CKI; TMR0ON enabled; PSA not_assigned;
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T0CON = 0xB8;
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}
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void TMR0_StartTimer(void)
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{
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// Start the Timer by writing to TMR0ON bit
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T0CONbits.TMR0ON = 1;
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}
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void TMR0_StopTimer(void)
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{
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// Stop the Timer by writing to TMR0ON bit
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T0CONbits.TMR0ON = 0;
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}
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uint16_t TMR0_ReadTimer(void)
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{
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uint16_t readVal;
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uint8_t readValLow;
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uint8_t readValHigh;
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readValLow = TMR0L;
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readValHigh = TMR0H;
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readVal = ((uint16_t)readValHigh << 8) + readValLow;
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return readVal;
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}
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void TMR0_WriteTimer(uint16_t timerVal)
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{
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// Write to the Timer0 register
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TMR0H = timerVal >> 8;
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TMR0L = (uint8_t) timerVal;
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}
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void TMR0_Reload(void)
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{
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// Write to the Timer0 register
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TMR0H = timer0ReloadVal >> 8;
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TMR0L = (uint8_t) timer0ReloadVal;
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}
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void TMR0_ISR(void)
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{
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// clear the TMR0 interrupt flag
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INTCONbits.TMR0IF = 0;
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// reload TMR0
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// Write to the Timer0 register
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TMR0H = timer0ReloadVal >> 8;
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TMR0L = (uint8_t) timer0ReloadVal;
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if(TMR0_InterruptHandler)
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{
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TMR0_InterruptHandler();
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}
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// add your TMR0 interrupt custom code
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}
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void TMR0_SetInterruptHandler(void (* InterruptHandler)(void)){
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TMR0_InterruptHandler = InterruptHandler;
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}
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void TMR0_DefaultInterruptHandler(void){
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// add your TMR0 interrupt custom code
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// or set custom function using TMR0_SetInterruptHandler()
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}
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/**
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End of File
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*/ |