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-rw-r--r--Projects/XPLAINBridge/Lib/SoftUART.h75
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diff --git a/Projects/XPLAINBridge/Lib/SoftUART.h b/Projects/XPLAINBridge/Lib/SoftUART.h
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--- a/Projects/XPLAINBridge/Lib/SoftUART.h
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-/*
-
- soft_uart
-
- v0.2
-
- Copyright John Steggall 2009
-
-*/
-
-
-/*
- Copyright 2009 John Steggall (steggall.j@gmail.com)
-
- Permission to use, copy, modify, and distribute this software
- and its documentation for any purpose and without fee is hereby
- granted, 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.
-*/
-
-/*
- Specifically designed for the xplain board, other uses could be made by adjusting uart_soft_conf.h
- replacing the port, pin and timer assignments. Also relies on and external interupt to detect the low
- level of the start bit, in this case INT0.
- Always configured to 9600baud. Can be changed by setting the BITLENGTH define to F_CPU/(desired baud)
- code may need optimising when getting any faster to sample the bit in the correct place. No
- compensation has been made for the response time of the int routine.
-
- Note: Configured to use 16bit timers.
-
- */
-
-/* Changes
- *
- * v0.2
- * - Added configuration file to ease pain of setup for different hardware configuration
- * - Changed bit access for ports that can be accessed directly
- * - Fixed atomic section in uart_init to encompass counter read
- */
-
-#ifndef UART_SOFT_H
-#define UART_SOFT_H
-
- /* status */
- extern uint8_t status;
-
- /* initialises software uart and enables transmit */
- extern void SoftUART_Init(void);
-
- /* checks if there is a byte in the receive buffer*/
- extern unsigned char SoftUART_IsReceived(void);
-
- /* returns the received byte */
- extern unsigned char SoftUART_RxByte(void);
-
- /* starts a byte send and returns the byte to be sent */
- extern unsigned char SoftUART_TxByte(unsigned char data);
-
- /* Simulates polling UDRE to see if tx buffer is empty and ready */
- extern unsigned char SoftUART_IsReady(void);
-
-#endif