eusart.c

/**
  EUSART Generated Driver File

  @Company
    Microchip Technology Inc.

  @File Name
    eusart.c

  @Summary
    This is the generated driver implementation file for the EUSART driver using PIC10 / PIC12 / PIC16 / PIC18 MCUs

  @Description
    This source file provides APIs for EUSART.
    Generation Information :
        Product Revision  :  PIC10 / PIC12 / PIC16 / PIC18 MCUs - 1.81.8
        Device            :  PIC18F46K20
        Driver Version    :  2.1.1
    The generated drivers are tested against the following:
        Compiler          :  XC8 2.36 and above
        MPLAB 	          :  MPLAB X 6.00
*/

/*
    (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 "eusart.h"

volatile eusart_status_t eusartRxLastError;

/**
  Section: EUSART APIs
*/

void (*EUSART_FramingErrorHandler)(void);
void (*EUSART_OverrunErrorHandler)(void);
void (*EUSART_ErrorHandler)(void);

void EUSART_DefaultFramingErrorHandler(void);
void EUSART_DefaultOverrunErrorHandler(void);
void EUSART_DefaultErrorHandler(void);

void EUSART_Initialize(void)
{
    // Set the EUSART module to the options selected in the user interface.

    // ABDOVF no_overflow; CKTXP async_noninverted_sync_fallingedge; BRG16 16bit_generator; WUE disabled; ABDEN disabled; DTRXP not_inverted; 
    BAUDCON = 0x08;

    // SPEN enabled; RX9 8-bit; CREN enabled; ADDEN disabled; SREN disabled; 
    RCSTA = 0x90;

    // TX9 8-bit; TX9D 0; SENDB sync_break_complete; TXEN enabled; SYNC asynchronous; BRGH hi_speed; CSRC slave_mode; 
    TXSTA = 0x24;

    // 
    SPBRG = 0xA0;

    // 
    SPBRGH = 0x01;


    EUSART_SetFramingErrorHandler(EUSART_DefaultFramingErrorHandler);
    EUSART_SetOverrunErrorHandler(EUSART_DefaultOverrunErrorHandler);
    EUSART_SetErrorHandler(EUSART_DefaultErrorHandler);

    eusartRxLastError.status = 0;

}

bool EUSART_is_tx_ready(void)
{
    return (bool)(PIR1bits.TX1IF && TXSTAbits.TXEN);
}

bool EUSART_is_rx_ready(void)
{
    return (bool)(PIR1bits.RC1IF);
}

bool EUSART_is_tx_done(void)
{
    return TXSTAbits.TRMT;
}

eusart_status_t EUSART_get_last_status(void){
    return eusartRxLastError;
}

uint8_t EUSART_Read(void)
{
    while(!PIR1bits.RC1IF)
    {
    }

    eusartRxLastError.status = 0;
    
    if(1 == RCSTAbits.OERR)
    {
        // EUSART error - restart

        RCSTAbits.CREN = 0; 
        RCSTAbits.CREN = 1; 
    }

    return RCREG;
}

void EUSART_Write(uint8_t txData)
{
    while(0 == PIR1bits.TX1IF)
    {
    }

    TXREG = txData;    // Write the data byte to the USART.
}




void EUSART_DefaultFramingErrorHandler(void){}

void EUSART_DefaultOverrunErrorHandler(void){
    // EUSART error - restart

    RCSTAbits.CREN = 0;
    RCSTAbits.CREN = 1;

}

void EUSART_DefaultErrorHandler(void){
}

void EUSART_SetFramingErrorHandler(void (* interruptHandler)(void)){
    EUSART_FramingErrorHandler = interruptHandler;
}

void EUSART_SetOverrunErrorHandler(void (* interruptHandler)(void)){
    EUSART_OverrunErrorHandler = interruptHandler;
}

void EUSART_SetErrorHandler(void (* interruptHandler)(void)){
    EUSART_ErrorHandler = interruptHandler;
}


/**
  End of File
*/