gdbv850sim/console/console-io.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  *  COPYRIGHT (c) 1989-2012.
0005  *  On-Line Applications Research Corporation (OAR).
0006  *
0007  * Redistribution and use in source and binary forms, with or without
0008  * modification, are permitted provided that the following conditions
0009  * are met:
0010  * 1. Redistributions of source code must retain the above copyright
0011  *    notice, this list of conditions and the following disclaimer.
0012  * 2. Redistributions in binary form must reproduce the above copyright
0013  *    notice, this list of conditions and the following disclaimer in the
0014  *    documentation and/or other materials provided with the distribution.
0015  *
0016  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0017  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0018  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0019  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0020  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0021  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0022  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0023  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0024  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0025  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0026  * POSSIBILITY OF SUCH DAMAGE.
0027  */
0028
0029 #include <bsp.h>
0030 #include <bsp/console-polled.h>
0031 #include <rtems/libio.h>
0032 #include <bsp/syscall.h>
0033
0034 /*
0035  *  console_initialize_hardware
0036  *
0037  *  This routine initializes the console hardware.
0038  */
0039 void console_initialize_hardware(void)
0040 {
0041 }
0042
0043 /*
0044  *  console_outbyte_polled
0045  *
0046  *  This routine transmits a character using polling.
0047  */
0048 void console_outbyte_polled(
0049   int  port,
0050   char ch
0051 )
0052 {
0053   TRAP0(SYS_write, 1, &ch, 1);
0054 }
0055
0056 /*
0057  *  console_inbyte_nonblocking
0058  *
0059  *  This routine polls for a character.
0060  */
0061
0062 int console_inbyte_nonblocking(
0063   int port
0064 )
0065 {
0066   char ch;
0067   int  rc;
0068
0069   rc = TRAP0 (SYS_read, 0, &ch, 1);
0070
0071   if ( rc != 1 )
0072     return -1;
0073   return ch;
0074 }
0075
0076 #include <rtems/bspIo.h>
0077
0078 static void console_output_char(char c) { console_outbyte_polled( 0, c ); }
0079
0080 BSP_output_char_function_type           BSP_output_char = console_output_char;
0081 BSP_polling_getchar_function_type       BSP_poll_char = NULL;