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// Copyright (C) 2009 Ubixum, Inc.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
/** \file serial.h
* defines functions to print to a serial console with SIO0
**/
#include "fx2types.h"
/**
* This function inits sio0 to use T2CON (timer 2)
* See TRM 14.3.4.1 (Table 14-16)
* Certain baud rates have too high an error rate to work. All baud rates are .16%
* except:
*
* 12MHZ 24MHZ
* \li 57600 -6.99%
* \li 38400 -2.34% -2.34%
* \li 19200 -2.34%
*
* Possible Baud rates:
* \li 2400
* \li 4800
* \li 9600
* \li 19200
* \li 28800
* \li 38400
* \li 57600
*
* Any of these rates should work except 57600 at 12mhz. -2.34% is pushing
* most hardware specs for working. All rates at 48mhz work at .16%
**/
void sio0_init( DWORD baud_rate ) __critical ; // baud_rate max should be 57600 since int=2 bytes
/**
putchar('\\n') or putchar('\\r') both transmit \\r\\n
Just use one or the other. (This makes terminal echo easy)
**/
int putchar(int c);
int getchar();
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