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17 results

SoftUART.h

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    Dean Camera authored
    Switch software UART over to timer 1 and remove timer prescaling to try to prevent integer rounding errors and thus minimize the possible error of the UART code.
    1c407b96
    History
    SoftUART.h 1.78 KiB
    /*
                 LUFA Library
         Copyright (C) Dean Camera, 2010.
                  
      dean [at] fourwalledcubicle [dot] com
          www.fourwalledcubicle.com
    */
    
    /*
      Copyright 2010  David Prentice (david.prentice [at] farming [dot] uk)
      Copyright 2010  Peter Danneger
      Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
    
      Permission to use, copy, modify, distribute, and sell this 
      software and its documentation for any purpose is hereby granted
      without fee, provided that the above copyright notice appear in 
      all copies and that both that the copyright notice and this
      permission notice and warranty disclaimer appear in supporting 
      documentation, and that the name of the author not be used in 
      advertising or publicity pertaining to distribution of the 
      software without specific, written prior permission.
    
      The author disclaim all warranties with regard to this
      software, including all implied warranties of merchantability
      and fitness.  In no event shall the author be liable for any
      special, indirect or consequential damages or any damages
      whatsoever resulting from loss of use, data or profits, whether
      in an action of contract, negligence or other tortious action,
      arising out of or in connection with the use or performance of
      this software.
    */
    
    #ifndef _SOFT_UART_
    #define _SOFT_UART_
    
    	/* Includes: */
    		#include <avr/io.h>
    		#include <avr/interrupt.h>
    		#include <stdbool.h>
    		
    		#include "../XPLAINBridge.h"
    		#include "LightweightRingBuff.h"
    
    	/* Macros: */
    		#define BAUD       9600
    		#define BIT_TIME   ((F_CPU + (BAUD / 2)) / BAUD)
    
    		#define SRX        PD0
    		#define SRXPIN     PIND
    		#define SRXPORT    PORTD
    
    		#define STX        PD1
    		#define STXPORT    PORTD
    		#define STXDDR     DDRD
    
    	/* Function Prototypes: */
    		void    SoftUART_Init(void);
    
    #endif