Tool/software: TI C/C++ Compiler
I've done a lot of searching and have found solutions to remap STDOUT to UART but modifying the code in a similar way to try and accommodate STDIN hasn't been successful. I'm using the low level driver functions found in the Example_2806xLaunchPadDemo (sci_io.h, sci_io.c), and it works for using printf(). How can I add functionality to get input using scanf()?
Here's the code that adds the device. Those functions are defined in the sci_io.c file.
//#############################################################################
//
//!
//! \brief Contains the various functions related to the serial
//! communications interface (SCI) object
//
// Group: C2000
// Target Device: TMS320F2802x
//
// (C) Copyright 2012, Texas Instruments, Inc.
//#############################################################################
// $TI Release: F2806x Support Library v2.03.00.00 $
// $Release Date: Sun Mar 25 13:24:47 CDT 2018 $
// $Copyright:
// Copyright (C) 2009-2018 Texas Instruments Incorporated - http://www.ti.com/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the
// distribution.
//
// Neither the name of Texas Instruments Incorporated nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// $
//#############################################################################
//
// Included Files
//
#include <stdio.h>
#include <file.h>
#include <stdint.h>
#include <stdbool.h>
#include "DSP28x_Project.h"
#include "sci_io.h"
//
// Defines
//
//
// Globals
//
uint16_t deviceOpen = 0;
//
// Functions
//
//
// SCI_open -
//
int SCI_open(const char * path, unsigned flags, int llv_fd)
{
if(deviceOpen)
{
return (-1);
}
else
{
deviceOpen = 1;
return (1);
}
}
//
// SCI_close -
//
int SCI_close(int dev_fd)
{
if((dev_fd != 1) || (!deviceOpen))
{
return (-1);
}
else
{
deviceOpen = 0;
return (0);
}
}
//
// SCI_read -
//
int SCI_read(int dev_fd, char * buf, unsigned count)
{
uint16_t readCount = 0;
uint16_t * bufPtr = (uint16_t *) buf;
if(count == 0)
{
return (0);
}
while((readCount < count) && SciaRegs.SCIRXST.bit.RXRDY)
{
*bufPtr = SciaRegs.SCIRXBUF.all;
readCount++;
bufPtr++;
}
return (readCount);
}
//
// SCI_write -
//
int SCI_write(int dev_fd, const char * buf, unsigned count)
{
uint16_t writeCount = 0;
uint16_t * bufPtr = (uint16_t *) buf;
if(count == 0)
{
return (0);
}
while(writeCount < count)
{
while(!SciaRegs.SCICTL2.bit.TXRDY);
SciaRegs.SCITXBUF = *bufPtr;
writeCount++;
bufPtr++;
}
return (writeCount);
}
//
// SCI_lseek -
//
off_t SCI_lseek(int dev_fd, off_t offset, int origin)
{
return (0);
}
//
// SCI_unlink -
//
int SCI_unlink(const char * path)
{
return (0);
}
//
// SCI_rename -
//
int SCI_rename(const char * old_name, const char * new_name)
{
return (0);
}
//
// End of File
//
