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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libbsp/] [a29k/] [portsw/] [console/] [console.c] - Rev 30
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/* * This file contains the template for a console IO package. * * 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: console.c,v 1.2 2001-09-27 11:59:36 chris Exp $ */ #define NO_BSP_INIT /* only one of the following can be defined */ #define SERIAL_INPUT /* use serial input */ /* #define HIF_INPUT */ /* use HIF input */ #if defined(SERIAL_INPUT) && defined(HIF_INPUT) #error SERIAL_INPUT and HIF_INPUT cannot both be defined!!! #endif /* both of the following can be defined */ #define SERIAL_OUTPUT /* remove to disable serial port console output */ /* #define HIF_OUTPUT */ /* remove to disable HIF console output */ #include <bsp.h> #include <rtems/libio.h> #include "serial.h" #include "concntl.h" #ifndef lint static char _sccsid[] = "@(#)console.c 09/12/96 1.13\n"; #endif /* 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; if ( arg ) { if ( console_duartinit(minor,*(unsigned32*)arg) ) return RTEMS_INVALID_NUMBER; } else { if ( console_duartinit(1,9600) || console_duartinit(0,9600) ) { return RTEMS_INVALID_NUMBER; } } 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( unsigned int minor ) { /* * If polling, wait until a character is available. */ #ifdef HIF_INPUT char retch; _read( 1, &retch, 1 ); return retch; #endif #ifdef SERIAL_INPUT return console_sps_getc( minor ); #endif } /* 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( unsigned int minor, char ch ) { /* * If polling, wait for the transmitter to be ready. * Check for flow control requests and process. * Then output the character. */ #ifdef SERIAL_OUTPUT console_sps_putc( minor, ch ); #endif /* * Carriage Return/New line translation. */ if ( ch == '\n' ) outbyte( minor, '\r' ); } /* * Open entry point */ rtems_device_driver console_open( rtems_device_major_number major, rtems_device_minor_number minor, void * arg ) { return RTEMS_SUCCESSFUL; } /* * Close entry point */ rtems_device_driver console_close( rtems_device_major_number major, rtems_device_minor_number minor, void * arg ) { 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; unsigned8 *buffer; unsigned32 maximum; unsigned32 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(minor); if (buffer[ count ] == '\n' || buffer[ count ] == '\r') { buffer[ count++ ] = '\n'; outbyte( minor, '\n' ); /* newline */ break; } else if (buffer[ count ] == '\b' && count > 0 ) { outbyte( minor, '\b' ); /* move back one space */ outbyte( minor, ' ' ); /* erase the character */ outbyte( minor, '\b' ); /* move back one space */ count-=2; } else outbyte( minor, buffer[ count ] ); /* echo the character */ } 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; unsigned8 *buffer; rw_args = (rtems_libio_rw_args_t *) arg; buffer = rw_args->buffer; maximum = rw_args->count; #ifdef HIF_OUTPUT _write( 0, buffer, maximum ); #endif #ifdef SERIAL_OUTPUT for (count = 0; count < maximum; count++) { if ( buffer[ count ] == '\n') { outbyte(minor,'\r'); } outbyte( minor,buffer[ count ] ); } #endif 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 ) { if (!arg) return RTEMS_INVALID_ADDRESS; switch( ((console_ioctl_request_t *)arg)->ioctl_type ) { case CON_KBHIT: /* check if keyboard was hit */ ((console_ioctl_request_t *)arg)->param = console_sps_kbhit(minor); break; case CON_GET_RAW_BYTE: ((console_ioctl_request_t *)arg)->param = inbyte(minor); break; case CON_SEND_RAW_BYTE: outbyte(minor, ((console_ioctl_request_t *)arg)->param); break; default: break; } return RTEMS_SUCCESSFUL; }
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