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author | Ralf Corsepius <ralf.corsepius@rtems.org> | 2006-03-16 17:34:05 +0000 |
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committer | Ralf Corsepius <ralf.corsepius@rtems.org> | 2006-03-16 17:34:05 +0000 |
commit | 15ebdf1f6b05f829c783298ad39ba3214ed42515 (patch) | |
tree | 7187ba8a5c804ecad37f2c00c5e2445304975406 /c/src/lib/libbsp/mips/rbtx4925/console | |
parent | New. (diff) | |
download | rtems-15ebdf1f6b05f829c783298ad39ba3214ed42515.tar.bz2 |
New (Submission by Bruce Robinson <brucer@pmccorp.com>)
Diffstat (limited to 'c/src/lib/libbsp/mips/rbtx4925/console')
-rw-r--r-- | c/src/lib/libbsp/mips/rbtx4925/console/console-io.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/mips/rbtx4925/console/console-io.c b/c/src/lib/libbsp/mips/rbtx4925/console/console-io.c new file mode 100644 index 0000000000..aca6933f5f --- /dev/null +++ b/c/src/lib/libbsp/mips/rbtx4925/console/console-io.c @@ -0,0 +1,272 @@ +/* + * This file contains the RBTX4925 console IO package. + * + * Author: Craig Lebakken <craigl@transition.com> + * + * COPYRIGHT (c) 1996 by Transition Networks Inc. + * + * To anyone who acknowledges that this file is provided "AS IS" + * without any express or implied warranty: + * permission to use, copy, modify, and distribute this file + * for any purpose is hereby granted without fee, provided that + * the above copyright notice and this notice appears in all + * copies, and that the name of Transition Networks not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * Transition Networks makes no representations about the suitability + * of this software for any purpose. + * + * Derived from c/src/lib/libbsp/no_cpu/no_bsp/console/console.c: + * + * COPYRIGHT (c) 1989-1999. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + + +/* + * Rather than deleting this, it is commented out to (hopefully) help + * the submitter send updates. + * + * static char _sccsid[] = "@(#)console.c 08/20/96 1.6\n"; + */ + + + +#include <bsp.h> +#include <rtems/libio.h> +#include <ctype.h> + +/* PMON entry points */ +int mon_read(int fd, char *buf, int cnt); /* stdin is fd=0 */ +int mon_write(int fd, char *buf, int cnt); /* stdout is fd=1 */ + + +/* console_initialize + * + * This routine initializes the console IO driver. + * + * Input parameters: NONE + * + * Output parameters: NONE + * + * Return values: + */ + +rtems_device_driver console_initialize( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg +) +{ + rtems_status_code status; + + status = rtems_io_register_name( + "/dev/console", + major, + (rtems_device_minor_number) 0 + ); + + if (status != RTEMS_SUCCESSFUL) + rtems_fatal_error_occurred(status); + + return RTEMS_SUCCESSFUL; +} + + +/* is_character_ready + * + * This routine returns TRUE if a character is available. + * + * Input parameters: NONE + * + * Output parameters: NONE + * + * Return values: + */ + +rtems_boolean is_character_ready( + char *ch +) +{ + *ch = '\0'; /* return NULL for no particular reason */ + return(TRUE); +} + +/* inbyte + * + * This routine reads a character from the SOURCE. + * + * Input parameters: NONE + * + * Output parameters: NONE + * + * Return values: + * character read from SOURCE + */ + +char inbyte( void ) +{ + char buf[10]; + /* + * If polling, wait until a character is available. + */ + + mon_read(0, buf, 1); /* stdin is fd=0, read 1 byte */ + + return (buf[0]); +} + +/* outbyte + * + * This routine transmits a character out the SOURCE. It may support + * XON/XOFF flow control. + * + * Input parameters: + * ch - character to be transmitted + * + * Output parameters: NONE + */ + +void outbyte( + char ch +) +{ + char buf[10]; + /* + * If polling, wait for the transmitter to be ready. + * Check for flow control requests and process. + * Then output the character. + */ + buf[0] = ch; + + mon_write( 1, buf, 1 ); /* stdout is fd=1, write 1 byte */ +} + + +#if 0 +static int console_fd = -1; +#endif + +/* + * Open entry point + */ + +rtems_device_driver console_open( + rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg +) +{ +#if 0 + int console_fd = open("tty0", 2); /* open for read/write */ +#endif + return RTEMS_SUCCESSFUL; +} + +/* + * Close entry point + */ + +rtems_device_driver console_close( + rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg +) +{ +#if 0 + if ( console_fd ) + close( console_fd ); +#endif + return RTEMS_SUCCESSFUL; +} + +/* + * read bytes from the serial port. We only have stdin. + */ + +rtems_device_driver console_read( + rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg +) +{ + rtems_libio_rw_args_t *rw_args; + char *buffer; + int maximum; + int count = 0; + + rw_args = (rtems_libio_rw_args_t *) arg; + + buffer = rw_args->buffer; + maximum = rw_args->count; + + for (count = 0; count < maximum; count++) { + buffer[ count ] = inbyte(); + if (buffer[ count ] == '\n' || buffer[ count ] == '\r') { + buffer[ count++ ] = '\n'; + break; + } + } + + rw_args->bytes_moved = count; + return (count >= 0) ? RTEMS_SUCCESSFUL : RTEMS_UNSATISFIED; +} + +/* + * write bytes to the serial port. Stdout and stderr are the same. + */ + +rtems_device_driver console_write( + rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg +) +{ + int count; + int maximum; + rtems_libio_rw_args_t *rw_args; + char *buffer; + + rw_args = (rtems_libio_rw_args_t *) arg; + + buffer = rw_args->buffer; + maximum = rw_args->count; + + for (count = 0; count < maximum; count++) { + if ( buffer[ count ] == '\n') { + outbyte('\r'); + } + outbyte( buffer[ count ] ); + } + + rw_args->bytes_moved = maximum; + return 0; +} + +/* + * IO Control entry point + */ + +rtems_device_driver console_control( + rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg +) +{ + return RTEMS_SUCCESSFUL; +} + + +#include <rtems/bspIo.h> + +void RBTX4925_output_char(char c) { outbyte( c ); } + +BSP_output_char_function_type BSP_output_char = RBTX4925_output_char; +BSP_polling_getchar_function_type BSP_poll_char = NULL; + |