diff options
Diffstat (limited to 'sys-utils/kbdrate.c')
| -rw-r--r-- | sys-utils/kbdrate.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/sys-utils/kbdrate.c b/sys-utils/kbdrate.c new file mode 100644 index 000000000..d8632a204 --- /dev/null +++ b/sys-utils/kbdrate.c @@ -0,0 +1,130 @@ +/* +From: faith@cs.unc.edu (Rik Faith) +Subject: User mode keyboard rate changer +Date: 27 Apr 92 13:44:26 GMT + +I put together this program, called kbdrate.c, which will reset the keyboard +repeat rate and delay in user mode. The program must have read/write +access to /dev/port, so if /dev/port is only read/writeable by group port, +then kbdrate must run setgid to group port (for example). + +The "rate" is the rate in characters per second + +The "delay" is the amount of time the key must remain depressed before it +will start to repeat. + +Usage examples: + +kbdrate set rate to IBM default (10.9 cps, 250mS delay) +kbdrate -r 30.0 set rate to 30 cps and delay to 250mS +kbdrate -r 20.0 -s set rate to 20 cps (delay 250mS) -- don't print message +kbdrate -r 0 -d 0 set rate to 2.0 cps and delay to 250 mS + +I find it useful to put kbdrate in my /etc/rc file so that the keyboard +rate is set to something that I find comfortable at boot time. This sure +beats rebuilding the kernel! +*/ + +/********************** CUT HERE *****************************/ +/* kbdrate.c -- Set keyboard typematic rate (and delay) + * Created: Thu Apr 23 12:24:30 1992 + * Revised: Wed Jun 22 22:40:46 1994 by faith@cs.unc.edu + * Author: Rickard E. Faith, faith@cs.unc.edu + * Copyright 1992 Rickard E. Faith. Distributed under the GPL. + * This program comes with ABSOLUTELY NO WARRANTY. + * Usage: kbdrate [-r rate] [-d delay] [-s] + * Rate can range from 2.0 to 30.0 (units are characters per second) + * Delay can range from 250 to 1000 (units are milliseconds) + * -s suppressed message + * Compiles under gcc 2.1 for Linux (tested with the pre-0.96 kernel) + * + * Wed Jun 22 21:35:43 1994, faith@cs.unc.edu: + * Changed valid_rates per suggestion by Andries.Brouwer@cwi.nl. + * Wed Jun 22 22:18:29 1994, faith@cs.unc.edu: + * Added patch for AUSTIN notebooks from John Bowman + * (bowman@hagar.ph.utexas.edu) + */ + +#include <stdio.h> +#include <stdlib.h> +#include <sys/file.h> + +static int valid_rates[] = { 300, 267, 240, 218, 200, 185, 171, 160, 150, + 133, 120, 109, 100, 92, 86, 80, 75, 67, + 60, 55, 50, 46, 43, 40, 37, 33, 30, 27, + 25, 23, 21, 20 }; +#define RATE_COUNT (sizeof( valid_rates ) / sizeof( int )) + +static int valid_delays[] = { 250, 500, 750, 1000 }; +#define DELAY_COUNT (sizeof( valid_delays ) / sizeof( int )) + +void main( int argc, char **argv ) +{ + double rate = 10.9; /* Default rate */ + int delay = 250; /* Default delay */ + int value = 0x7f; /* Maximum delay with slowest rate */ + /* DO NOT CHANGE this value */ + int silent = 0; + int fd; + char data; + int c; + int i; + extern char *optarg; + extern int optind; + + while ( (c = getopt( argc, argv, "r:d:s" )) != EOF ) + switch (c) { + case 'r': + rate = atof( optarg ); + break; + case 'd': + delay = atoi( optarg ); + break; + case 's': + silent = 1; + break; + } + + for (i = 0; i < RATE_COUNT; i++) + if (rate * 10 >= valid_rates[i]) { + value &= 0x60; + value |= i; + break; + } + + for (i = 0; i < DELAY_COUNT; i++) + if (delay <= valid_delays[i]) { + value &= 0x1f; + value |= i << 5; + break; + } + + if ( (fd = open( "/dev/port", O_RDWR )) < 0) { + perror( "Cannot open /dev/port" ); + exit( 1 ); + } + + do { + lseek( fd, 0x64, 0 ); + read( fd, &data, 1 ); + } while ((data & 2) == 2 ); /* wait */ + + lseek( fd, 0x60, 0 ); + data = 0xf3; /* set typematic rate */ + write( fd, &data, 1 ); + + do { + lseek( fd, 0x64, 0 ); + read( fd, &data, 1 ); + } while ((data & 2) == 2 ); /* wait */ + + lseek( fd, 0x60, 0 ); + sleep( 1 ); + write( fd, &value, 1 ); + + close( fd ); + + if (!silent) printf( "Typematic Rate set to %.1f cps (delay = %d mS)\n", + valid_rates[value & 0x1f] / 10.0, + valid_delays[ (value & 0x60) >> 5 ] ); +} |