【4月晒板卡】+PIC16F18446开启定时器并实现多功能按键

/**

  TMR0 Generated Driver File



  @Company

    Microchip Technology Inc.



  [url=home.php?mod=space&uid=288409]@file[/url] Name

    tmr0.c



  @Summary

    This is the generated driver implementation file for the TMR0 driver using PIC10 / PIC12 / PIC16 / PIC18 MCUs



  @Description

    This source file provides APIs for TMR0.

    Generation Information :

        Product Revision  :  PIC10 / PIC12 / PIC16 / PIC18 MCUs - 1.76

        Device            :  PIC16F18446

        Driver Version    :  3.10

    The generated drivers are tested against the following:

        Compiler          :  XC8 2.00

        MPLAB                   :  MPLAB X 5.10

*/



/*

    (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.

*/



/**

  Section: Included Files

*/



#include <xc.h>

#include "tmr0.h"

#include "pin_manager.h"



extern char keys,keyok;

extern int ms;

/**

  Section: TMR0 APIs

*/



void (*TMR0_InterruptHandler)(void);



void TMR0_Initialize(void)

{

    // Set TMR0 to the options selected in the User Interface



    // T0CS HFINTOSC; T0CKPS 1:64; T0ASYNC synchronised; 

    T0CON1 = 0x67;   //0x66  T0CKPS=1:128



    // TMR0H 31; 

    TMR0H = 0x1F;



    // TMR0L 0; 

    TMR0L = 0x00;



    // Clear Interrupt flag before enabling the interrupt

    PIR0bits.TMR0IF = 0;



    // Enabling TMR0 interrupt.

    PIE0bits.TMR0IE = 1;



    // Set Default Interrupt Handler

    TMR0_SetInterruptHandler(TMR0_DefaultInterruptHandler);



    // T0OUTPS 1:5; T0EN enabled; T016BIT 8-bit; 

    T0CON0 = 0x89;  //0x84  T0OUTPS=1:10

}



void TMR0_StartTimer(void)

{

    // Start the Timer by writing to TMR0ON bit

    T0CON0bits.T0EN = 1;

}



void TMR0_StopTimer(void)

{

    // Stop the Timer by writing to TMR0ON bit

    T0CON0bits.T0EN = 0;

}



uint8_t TMR0_ReadTimer(void)

{

    uint8_t readVal;



    // read Timer0, low register only

    readVal = TMR0L;



    return readVal;

}



void TMR0_WriteTimer(uint8_t timerVal)

{

    // Write to Timer0 registers, low register only

    TMR0L = timerVal;

 }



void TMR0_Reload(uint8_t periodVal)

{

   // Write to Timer0 registers, high register only

   TMR0H = periodVal;

}



void TMR0_ISR(void)

{

    static volatile uint16_t CountCallBack = 0;

    ms++;

    if(0==IO_RC2_GetValue()){

        if(0==keyok & keys<255)

            keys++;

    }

    else{

        if(keys>0)

            keyok = 1;

    }

    // clear the TMR0 interrupt flag

    PIR0bits.TMR0IF = 0;

    // callback function - called every 8th pass

    if (++CountCallBack >= TMR0_INTERRUPT_TICKER_FACTOR)

    {

        // ticker function call

        TMR0_CallBack();



        // reset ticker counter

        CountCallBack = 0;

    }



    // add your TMR0 interrupt custom code

}



void TMR0_CallBack(void)

{

    // Add your custom callback code here



    if(TMR0_InterruptHandler)

    {

        TMR0_InterruptHandler();

    }

}



void TMR0_SetInterruptHandler(void (* InterruptHandler)(void)){

    TMR0_InterruptHandler = InterruptHandler;

}



void TMR0_DefaultInterruptHandler(void){

    // add your TMR0 interrupt custom code

    // or set custom function using TMR0_SetInterruptHandler()

}



/**

  End of File

*/