uart.h

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/* ************************************************************************** */
#ifndef UART_H    /* Guard against multiple inclusion */
#define UART_H


// //**************************************************************************
#include <stdlib.h>
#include <stdint.h>
#include <xc.h>
#include <sys/attribs.h>

#include "interrup.h"


//**************************************************************************
//defines  interrupt 
 
#define DisableUart1RxInterrupt()   IEC0bits.U1RXIE = 0;
#define EnableUart1RxInterrupt()    IEC0bits.U1RXIE = 1;
#define DisableUart1TxInterrupt()   IEC0bits.U1TXIE = 0;
#define EnableUart1TxInterrupt()    IEC0bits.U1TXIE = 1;
#define UART_BUF_SIZE   256                                 
#define INDEX_MASK      (UART_BUF_SIZE-1)

//**************************************************************************

typedef struct
{
   uint8_t data[UART_BUF_SIZE]; 
   uint16_t head;               
   uint16_t tail;               
   uint16_t count;              
} SerialBuf;                    

//**************************************************************************
// global 

volatile static SerialBuf rxb;  
volatile static SerialBuf txb;  

//**************************************************************************
void initUart(uint32_t PBCLK);

//**************************************************************************
void _mon_putc (char c);

//**************************************************************************
uint8_t readChar(char *pchar);


#endif