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add time related function. 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1082 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong@gmail.com 2010-11-21 23:55:44 +00:00
parent a90c2712ed
commit d57496b78c
2 changed files with 30 additions and 0 deletions
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29
components/libc/newlib/libc.c
View File

@ -2,6 +2,27 @@
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/time.h>
struct timeval _timevalue;
static void libc_system_time_init()
{
rt_device_t device;
time_t time;
rt_tick_t tick;
time = 0; tick = 0;
device = rt_device_find("rtc");
if (device != RT_NULL)
{
rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time);
}
tick = rt_tick_get();
_timevalue.tv_sec = time;
_timevalue.tv_usec = (1000000UL * tick)/RT_TICK_PER_SECOND;
}
void libc_system_init(const char* tty_name)
{
@ -20,3 +41,11 @@ void libc_system_init(const char* tty_name)
putenv("HOME=/");
}
int libc_time_to_tick(const struct timespec *time)
{
int tick;
tick = RT_WAITING_FOREVER;
return tick;
}

1
components/libc/newlib/libc.h
View File

@ -2,5 +2,6 @@
#define __RTT_LIBC_H__
void libc_system_init(const char* tty_name);
int libc_time_to_tick(const struct timespec *time);
#endif