misctest02.c

/*
 * Copyright (c) 2009 Sung Ho Park
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#include <ubinos/ubik_test.h>
 
#if (INCLUDE__UBINOS__UBIK_TEST == 1)
#if !( UBINOS__UBIK_TEST__EXCLUDE_MISCTESTSET == 1)
 
#include <stdio.h>
#include <stdlib.h>
 
int ubik_test_misctest02(void) {
    int r;
    tickcount_t tickcount1;
    tickcount_t tickcount2;
    unsigned int waitvalue;
    unsigned int rtick;
    unsigned int itick;
    unsigned int rloopcount;
    unsigned int iloopcount;
    unsigned int errorrate;
 
    printf("\n");
    printf("<test>\n");
    printf("<name>ubik_test_misctest02</name>\n");
    printf("<description>Test for accuracy of UBINOS__BSP__BUSYWAITCOUNT_PER_MS</description>\n");
 
    printf("<message>\n");
 
    printf("it tasks %d ms\n", UBINOS__UBIK_TEST__BUSYWAITCOUNTTESTTIMEMS);
 
    waitvalue = bsp_getbusywaitcountperms() * UBINOS__UBIK_TEST__BUSYWAITCOUNTTESTTIMEMS;
    tickcount1 = ubik_gettickcount();
    bsp_busywait(waitvalue);
    tickcount2 = ubik_gettickcount();
    tickcount1 = ubik_gettickdiff(tickcount1, tickcount2);
 
    rtick = tickcount1.low;
    itick = ubik_gettickpersec() * UBINOS__UBIK_TEST__BUSYWAITCOUNTTESTTIMEMS / 1000;
    rloopcount = bsp_getbusywaitcountperms();
    iloopcount = rloopcount * itick / rtick;
 
    printf("current value is %d\n", rloopcount);
    printf("recommended value is %d\n", iloopcount);
 
    if (rtick >= itick) {
        errorrate = (rtick - itick) * 100 / itick;
    }
    else {
        errorrate = (itick - rtick) * 100 / itick;
    }
    printf("accuracy is %d percent\n", 100 - errorrate);
 
    if (errorrate <= 2) {
        r = 0;
    }
    else {
        r = -1;
    }
 
    printf("</message>\n");
 
    printf("<result>");
    if (0 == r) {
        printf("pass");
    }
    else {
        printf("fail");
    }
    printf("</result>\n");
    printf("</test>\n");
    printf("\n");
    return r;
}
 
#endif /* !( UBINOS__UBIK_TEST__EXCLUDE_MISCTESTSET == 1) */
#endif /* (INCLUDE__UBINOS__UBIK_TEST == 1) */