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-rw-r--r--components/drivers/rtc/rtc.c347
1 files changed, 174 insertions, 173 deletions
diff --git a/components/drivers/rtc/rtc.c b/components/drivers/rtc/rtc.c
index 72756e4c50..af67f40a48 100644
--- a/components/drivers/rtc/rtc.c
+++ b/components/drivers/rtc/rtc.c
@@ -1,173 +1,174 @@
-/*
- * File : rtc.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE
- *
- * Change Logs:
- * Date Author Notes
- * 2012-01-29 aozima first version.
- * 2012-04-12 aozima optimization: find rtc device only first.
- * 2012-04-16 aozima add scheduler lock for set_date and set_time.
- */
-
-#include <time.h>
-#include <string.h>
-#include <rtthread.h>
-
-/** \brief returns the current time.
- *
- * \param time_t * t the timestamp pointer, if not used, keep NULL.
- * \return time_t return timestamp current.
- *
- */
-/* for IAR 6.2 later Compiler */
-#if defined (__IAR_SYSTEMS_ICC__) && (__VER__) >= 6020000
-#pragma module_name = "?time"
-time_t (__time32)(time_t *t) /* Only supports 32-bit timestamp */
-#else
-time_t time(time_t* t)
-#endif
-{
- static rt_device_t device = RT_NULL;
- time_t time_now = 0;
-
- /* optimization: find rtc device only first. */
- if (device == RT_NULL)
- {
- device = rt_device_find("rtc");
- }
-
- /* read timestamp from RTC device. */
- if (device != RT_NULL)
- {
- if (rt_device_open(device, 0) == RT_EOK)
- {
- rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time_now);
- rt_device_close(device);
- }
- }
-
- /* if t is not NULL, write timestamp to *t */
- if (t != RT_NULL)
- {
- *t = time_now;
- }
-
- return time_now;
-}
-
-/** \brief set system date(time not modify).
- *
- * \param rt_uint32_t year e.g: 2012.
- * \param rt_uint32_t month e.g: 12 (1~12).
- * \param rt_uint32_t day e.g: e.g: 31.
- * \return rt_err_t if set success, return RT_EOK.
- *
- */
-rt_err_t set_date(rt_uint32_t year, rt_uint32_t month, rt_uint32_t day)
-{
- time_t now;
- struct tm * p_tm;
- struct tm tm_new;
- rt_device_t device;
- rt_err_t ret = RT_ERROR;
-
- /* get current time */
- now = time(RT_NULL);
-
- /* lock scheduler. */
- rt_enter_critical();
- /* converts calendar time time into local time. */
- p_tm = localtime(&now);
- /* copy the statically located variable */
- memcpy(&tm_new, p_tm, sizeof(struct tm));
- /* unlock scheduler. */
- rt_exit_critical();
-
- /* update date. */
- tm_new.tm_year = year - 1900;
- tm_new.tm_mon = month - 1; /* tm_mon: 0~11 */
- tm_new.tm_mday = day;
-
- /* converts the local time in time to calendar time. */
- now = mktime(&tm_new);
-
- device = rt_device_find("rtc");
- if (device == RT_NULL)
- {
- return RT_ERROR;
- }
-
- ret = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &now);
-
- /* update to RTC device. */
- return ret;
-}
-
-/** \brief set system time(date not modify).
- *
- * \param rt_uint32_t hour e.g: 0~23.
- * \param rt_uint32_t minute e.g: 0~59.
- * \param rt_uint32_t second e.g: 0~59.
- * \return rt_err_t if set success, return RT_EOK.
- *
- */
-rt_err_t set_time(rt_uint32_t hour, rt_uint32_t minute, rt_uint32_t second)
-{
- time_t now;
- struct tm * p_tm;
- struct tm tm_new;
- rt_device_t device;
- rt_err_t ret = RT_ERROR;
-
- /* get current time */
- now = time(RT_NULL);
-
- /* lock scheduler. */
- rt_enter_critical();
- /* converts calendar time time into local time. */
- p_tm = localtime(&now);
- /* copy the statically located variable */
- memcpy(&tm_new, p_tm, sizeof(struct tm));
- /* unlock scheduler. */
- rt_exit_critical();
-
- /* update time. */
- tm_new.tm_hour = hour;
- tm_new.tm_min = minute;
- tm_new.tm_sec = second;
-
- /* converts the local time in time to calendar time. */
- now = mktime(&tm_new);
-
- device = rt_device_find("rtc");
- if (device == RT_NULL)
- {
- return RT_ERROR;
- }
-
- ret = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &now);
-
- /* update to RTC device. */
- return ret;
-}
-
-#ifdef RT_USING_FINSH
-#include <finsh.h>
-#include <rtdevice.h>
-void list_date(void)
-{
- time_t now;
-
- now = time(RT_NULL);
- rt_kprintf("%s\n", ctime(&now));
-}
-FINSH_FUNCTION_EXPORT(list_date, show date and time.)
-
-FINSH_FUNCTION_EXPORT(set_date, set date. e.g: set_date(2010,2,28))
-FINSH_FUNCTION_EXPORT(set_time, set time. e.g: set_time(23,59,59))
-#endif
+/*
+ * File : rtc.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date Author Notes
+ * 2012-01-29 aozima first version.
+ * 2012-04-12 aozima optimization: find rtc device only first.
+ * 2012-04-16 aozima add scheduler lock for set_date and set_time.
+ */
+
+#include <time.h>
+#include <string.h>
+#include <rtthread.h>
+
+/** \brief returns the current time.
+ *
+ * \param time_t * t the timestamp pointer, if not used, keep NULL.
+ * \return time_t return timestamp current.
+ *
+ */
+/* for IAR 6.2 later Compiler */
+#if defined (__IAR_SYSTEMS_ICC__) && (__VER__) >= 6020000
+#pragma module_name = "?time"
+time_t (__time32)(time_t *t) /* Only supports 32-bit timestamp */
+#else
+time_t time(time_t *t)
+#endif
+{
+ static rt_device_t device = RT_NULL;
+ time_t time_now = 0;
+
+ /* optimization: find rtc device only first. */
+ if (device == RT_NULL)
+ {
+ device = rt_device_find("rtc");
+ }
+
+ /* read timestamp from RTC device. */
+ if (device != RT_NULL)
+ {
+ if (rt_device_open(device, 0) == RT_EOK)
+ {
+ rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time_now);
+ rt_device_close(device);
+ }
+ }
+
+ /* if t is not NULL, write timestamp to *t */
+ if (t != RT_NULL)
+ {
+ *t = time_now;
+ }
+
+ return time_now;
+}
+
+/** \brief set system date(time not modify).
+ *
+ * \param rt_uint32_t year e.g: 2012.
+ * \param rt_uint32_t month e.g: 12 (1~12).
+ * \param rt_uint32_t day e.g: e.g: 31.
+ * \return rt_err_t if set success, return RT_EOK.
+ *
+ */
+rt_err_t set_date(rt_uint32_t year, rt_uint32_t month, rt_uint32_t day)
+{
+ time_t now;
+ struct tm *p_tm;
+ struct tm tm_new;
+ rt_device_t device;
+ rt_err_t ret = -RT_ERROR;
+
+ /* get current time */
+ now = time(RT_NULL);
+
+ /* lock scheduler. */
+ rt_enter_critical();
+ /* converts calendar time time into local time. */
+ p_tm = localtime(&now);
+ /* copy the statically located variable */
+ memcpy(&tm_new, p_tm, sizeof(struct tm));
+ /* unlock scheduler. */
+ rt_exit_critical();
+
+ /* update date. */
+ tm_new.tm_year = year - 1900;
+ tm_new.tm_mon = month - 1; /* tm_mon: 0~11 */
+ tm_new.tm_mday = day;
+
+ /* converts the local time in time to calendar time. */
+ now = mktime(&tm_new);
+
+ device = rt_device_find("rtc");
+ if (device == RT_NULL)
+ {
+ return -RT_ERROR;
+ }
+
+ /* update to RTC device. */
+ ret = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &now);
+
+ return ret;
+}
+
+/** \brief set system time(date not modify).
+ *
+ * \param rt_uint32_t hour e.g: 0~23.
+ * \param rt_uint32_t minute e.g: 0~59.
+ * \param rt_uint32_t second e.g: 0~59.
+ * \return rt_err_t if set success, return RT_EOK.
+ *
+ */
+rt_err_t set_time(rt_uint32_t hour, rt_uint32_t minute, rt_uint32_t second)
+{
+ time_t now;
+ struct tm *p_tm;
+ struct tm tm_new;
+ rt_device_t device;
+ rt_err_t ret = -RT_ERROR;
+
+ /* get current time */
+ now = time(RT_NULL);
+
+ /* lock scheduler. */
+ rt_enter_critical();
+ /* converts calendar time time into local time. */
+ p_tm = localtime(&now);
+ /* copy the statically located variable */
+ memcpy(&tm_new, p_tm, sizeof(struct tm));
+ /* unlock scheduler. */
+ rt_exit_critical();
+
+ /* update time. */
+ tm_new.tm_hour = hour;
+ tm_new.tm_min = minute;
+ tm_new.tm_sec = second;
+
+ /* converts the local time in time to calendar time. */
+ now = mktime(&tm_new);
+
+ device = rt_device_find("rtc");
+ if (device == RT_NULL)
+ {
+ return -RT_ERROR;
+ }
+
+ /* update to RTC device. */
+ ret = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &now);
+
+ return ret;
+}
+
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+#include <rtdevice.h>
+
+void list_date(void)
+{
+ time_t now;
+
+ now = time(RT_NULL);
+ rt_kprintf("%s\n", ctime(&now));
+}
+FINSH_FUNCTION_EXPORT(list_date, show date and time.)
+
+FINSH_FUNCTION_EXPORT(set_date, set date. e.g: set_date(2010,2,28))
+FINSH_FUNCTION_EXPORT(set_time, set time. e.g: set_time(23,59,59))
+#endif
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