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/**
* @file
*
* Real time clock shell command.
*/
/*
* Copyright (c) 2009
* embedded brains GmbH
* Obere Lagerstr. 30
* D-82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#include <stdio.h>
#include <inttypes.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <rtems.h>
#include <rtems/rtc.h>
#include <rtems/error.h>
#include <rtems/shell.h>
#define RTEMS_RTC_SHELL_ERROR( fmt, ...) \
do { \
printf( "error: " fmt "\n", ##__VA_ARGS__); \
return -1; \
} while (0)
#define RTEMS_RTC_SHELL_ERROR_SC( sc, fmt, ...) \
if ((sc) != RTEMS_SUCCESSFUL) { \
printf( "error: " fmt ": %s\n", ##__VA_ARGS__, rtems_status_text( sc)); \
return -1; \
}
static const char rtems_rtc_shell_usage [] =
"real time clock read and set\n"
"\n"
"rtc\n"
"\tprints the current time of day\n"
"\n"
"rtc YYYY-MM-DD [HH:MM:SS [TICKS]]\n"
"\tsets the time of day and real time clock";
static int rtems_rtc_shell_main( int argc, char **argv)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
rtems_time_of_day tod = {
.year = 1988,
.month = 1,
.day = 1,
.hour = 0,
.minute = 0,
.second = 0,
.ticks = 0
};
if (argc == 1) {
sc = rtems_clock_get_tod( &tod);
RTEMS_RTC_SHELL_ERROR_SC( sc, "get time of day");
printf(
"%04" PRIu32 "-%02" PRIu32 "-%02" PRIu32
" %02" PRIu32 ":%02" PRIu32 ":%02" PRIu32
" %02" PRIu32 "\n",
tod.year,
tod.month,
tod.day,
tod.hour,
tod.minute,
tod.second,
tod.ticks
);
} else if (argc > 1 && argc < 5) {
int rv = 0;
int fd = 0;
ssize_t n = 0;
uint32_t v [3];
if (argc > 1) {
rv = sscanf(
argv [1],
"%04" PRIu32 "-%02" PRIu32 "-%02" PRIu32,
v,
v + 1,
v + 2
);
if (rv == 3) {
tod.year = v [0];
tod.month = v [1];
tod.day = v [2];
} else {
RTEMS_RTC_SHELL_ERROR( "unexpected YYYY-MM-DD input: %s", argv [1]);
}
}
if (argc > 2) {
rv = sscanf(
argv [2],
"%04" PRIu32 ":%02" PRIu32 ":%02" PRIu32,
v,
v + 1,
v + 2
);
if (rv == 3) {
tod.hour = v [0];
tod.minute = v [1];
tod.second = v [2];
} else {
RTEMS_RTC_SHELL_ERROR( "unexpected HH:MM:SS input: %s", argv [2]);
}
}
if (argc > 3) {
rv = sscanf( argv [3], "%" PRIu32, v);
if (rv == 1) {
tod.ticks = v [0];
} else {
RTEMS_RTC_SHELL_ERROR( "unexpected TICKS input: %s", argv [3]);
}
}
sc = rtems_clock_set( &tod);
RTEMS_RTC_SHELL_ERROR_SC( sc, "set time of day");
fd = open( RTC_DEVICE_NAME, O_WRONLY);
if (fd < 0) {
perror( "error: open " RTC_DEVICE_NAME);
return -1;
}
n = write( fd, &tod, sizeof( tod));
if (n != (ssize_t) sizeof( tod)) {
perror( "error: write to " RTC_DEVICE_NAME);
close( fd);
return -1;
}
rv = close( fd);
if (rv != 0) {
perror( "error: close " RTC_DEVICE_NAME);
return -1;
}
} else {
puts( rtems_rtc_shell_usage);
return -1;
}
return 0;
}
struct rtems_shell_cmd_tt rtems_shell_RTC_Command = {
.name = "rtc",
.usage = rtems_rtc_shell_usage,
.topic = "misc",
.command = rtems_rtc_shell_main,
.alias = NULL,
.next = NULL
};
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