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atspi-trim: utility to set the crystal trimming capacitors.

Browse Source 
- atrf/tools/Makefile: added atspi-trim
- atrf/tools/atspi-trim/Makefile, atrf/tools/atspi-trim/atspi-trim.c: show
  and adjust the capacitors to trim the crystal oscillator
- atrf/tools/atspi-rssi/atspi-rssi.c: removed left-over FROM_DEV and TO_DEV
This commit is contained in:
Werner Almesberger 2010-08-23 21:49:20 -03:00
parent 5514c336a5
commit b7700518d9
4 changed files with 84 additions and 5 deletions
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2
atrf/tools/Makefile
View File

@ -11,6 +11,6 @@
#
DIRS=atspi-id atspi-reset atspi-rssi
DIRS=atspi-id atspi-reset atspi-rssi atspi-trim
include ../../Makefile.recurse

4
atrf/tools/atspi-rssi/atspi-rssi.c
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@ -21,10 +21,6 @@
#include "atspi.h"
#define FROM_DEV ATSPI_FROM_DEV(0)
#define TO_DEV ATSPI_TO_DEV(0)
static struct timeval t0;

21
atrf/tools/atspi-trim/Makefile Normal file
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@ -0,0 +1,21 @@
#
# atspi-trim/Makefile - Build the oscillator trim utility
#
# Written 2010 by Werner Almesberger
# Copyright 2010 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.
#
F32XBASE = ../../../../f32xbase
MAIN = atspi-trim
include $(F32XBASE)/lib/Makefile.common
CFLAGS += -I../../fw/include -I../include
LDLIBS += -L../lib -latspi

62
atrf/tools/atspi-trim/atspi-trim.c Normal file
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@ -0,0 +1,62 @@
/*
* atspi-trim/atspi-trim.c - AF86RF230 oscillator trim utility
*
* Written 2010 by Werner Almesberger
* Copyright 2010 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 <usb.h>
#include <sys/time.h>
#include "at86rf230.h"
#include "atspi/ep0.h"
#include "atspi.h"
static void usage(const char *name)
{
fprintf(stderr, "%s [trim_value]\n", name);
exit(1);
}
int main(int argc, const char **argv)
{
usb_dev_handle *dev;
int trim = -1;
char *end;
switch (argc) {
case 1:
break;
case 2:
trim = strtoul(argv[1], &end, 0);
if (*end || trim > 15)
usage(*argv);
break;
default:
usage(*argv);
}
dev = atspi_open();
if (!dev)
return 1;
if (trim == -1) {
trim = atspi_reg_read(dev, REG_XOSC_CTRL) & XTAL_TRIM_MASK;
printf("%d (%d.%d pF)\n", trim, trim*3/10, trim*3 % 10);
} else {
atspi_reg_write(dev, REG_XOSC_CTRL,
(XTAL_MODE_INT << XTAL_MODE_SHIFT) | trim);
}
return 0;
}