mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-30 02:42:48 +02:00
73 lines
1.4 KiB
C
73 lines
1.4 KiB
C
/*
|
|
* atrf-trim/atrf-trim.c - AT86RF230 oscillator trim utility
|
|
*
|
|
* Written 2010-2011 by Werner Almesberger
|
|
* Copyright 2010-2011 Werner Almesberger
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <sys/time.h>
|
|
|
|
#include "at86rf230.h"
|
|
#include "atrf.h"
|
|
|
|
|
|
static void usage(const char *name)
|
|
{
|
|
fprintf(stderr, "%s [-d driver[:arg]] [trim_value]\n", name);
|
|
exit(1);
|
|
}
|
|
|
|
|
|
int main(int argc, char *const *argv)
|
|
{
|
|
const char *driver = NULL;
|
|
struct atrf_dsc *dsc;
|
|
int trim = -1;
|
|
char *end;
|
|
int c;
|
|
|
|
while ((c = getopt(argc, argv, "d:")) != EOF)
|
|
switch (c) {
|
|
case 'd':
|
|
driver = optarg;
|
|
break;
|
|
default:
|
|
usage(*argv);
|
|
}
|
|
|
|
switch (argc-optind) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
trim = strtoul(argv[optind], &end, 0);
|
|
if (*end || trim > 15)
|
|
usage(*argv);
|
|
break;
|
|
default:
|
|
usage(*argv);
|
|
}
|
|
|
|
dsc = atrf_open(driver);
|
|
if (!dsc)
|
|
return 1;
|
|
|
|
if (trim == -1) {
|
|
trim = atrf_reg_read(dsc, REG_XOSC_CTRL) & XTAL_TRIM_MASK;
|
|
printf("%d (%d.%d pF)\n", trim, trim*3/10, trim*3 % 10);
|
|
} else {
|
|
atrf_reg_write(dsc, REG_XOSC_CTRL,
|
|
(XTAL_MODE_INT << XTAL_MODE_SHIFT) | trim);
|
|
}
|
|
|
|
return 0;
|
|
}
|