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Annotation of prex-old/usr/test/zero/zero.c, Revision 1.1.1.1

1.1       nbrk        1: /*
                      2:  * Copyright (c) 2005, Kohsuke Ohtani
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. Neither the name of the author nor the names of any co-contributors
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29:
                     30: /*
                     31:  * zero.c - test zero device driver.
                     32:  */
                     33:
                     34: #include <prex/prex.h>
                     35: #include <stdio.h>
                     36: #include <string.h>
                     37:
                     38: static char buf[100];
                     39:
                     40: void
                     41: dump_buf(void)
                     42: {
                     43:        int i;
                     44:
                     45:        for (i = 0; i < 100; i++)
                     46:                putchar(buf[i]);
                     47:        putchar('\n');
                     48: }
                     49:
                     50: int
                     51: main(int argc, char *argv[])
                     52: {
                     53:        device_t zero_dev;
                     54:        int i, err;
                     55:        size_t len;
                     56:
                     57:        printf("zero test\n");
                     58:
                     59:        /* 0000000000111111111122222.... */
                     60:        for (i = 0; i < 100; i++)
                     61:                buf[i] = '0' + i / 10;
                     62:        dump_buf();
                     63:
                     64:        err = device_open("zero", 0, &zero_dev);
                     65:        if (err)
                     66:                printf("device open error!\n");
                     67:
                     68:        /* zero fill 50 character */
                     69:        len = 50;
                     70:        err = device_read(zero_dev, buf, &len, 0);
                     71:        if (err)
                     72:                printf("device read error!\n");
                     73:
                     74:        /* 5555555555666666666777... */
                     75:        dump_buf();
                     76:
                     77:        return 0;
                     78: }