From a6ed1742539c62186fb903017b52dd48f145ae4f Mon Sep 17 00:00:00 2001
From: Vasil Zlatanov <v@skozl.com>
Date: Wed, 3 May 2017 16:30:16 +0100
Subject: Add template and build environment.

---
 ext/rtc_time.h | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 ext/rtc_time.h

(limited to 'ext/rtc_time.h')

diff --git a/ext/rtc_time.h b/ext/rtc_time.h
new file mode 100644
index 0000000..94af2c9
--- /dev/null
+++ b/ext/rtc_time.h
@@ -0,0 +1,85 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Implementation of the C time.h functions
+ *
+ * Provides mechanisms to set and read the current time, based
+ * on the microcontroller Real-Time Clock (RTC), plus some
+ * standard C manipulation and formating functions.
+ *
+ * Example:
+ * @code
+ * #include "mbed.h"
+ *
+ * int main() {
+ *     set_time(1256729737);  // Set RTC time to Wed, 28 Oct 2009 11:35:37
+ *
+ *     while(1) {
+ *         time_t seconds = time(NULL);
+ *
+ *         printf("Time as seconds since January 1, 1970 = %d\n", seconds);
+ *
+ *         printf("Time as a basic string = %s", ctime(&seconds));
+ *
+ *         char buffer[32];
+ *         strftime(buffer, 32, "%I:%M %p\n", localtime(&seconds));
+ *         printf("Time as a custom formatted string = %s", buffer);
+ *
+ *         wait(1);
+ *     }
+ * }
+ * @endcode
+ */
+
+/** Set the current time
+ *
+ * Initialises and sets the time of the microcontroller Real-Time Clock (RTC)
+ * to the time represented by the number of seconds since January 1, 1970
+ * (the UNIX timestamp).
+ *
+ * @param t Number of seconds since January 1, 1970 (the UNIX timestamp)
+ *
+ * Example:
+ * @code
+ * #include "mbed.h"
+ *
+ * int main() {
+ *     set_time(1256729737); // Set time to Wed, 28 Oct 2009 11:35:37
+ * }
+ * @endcode
+ */
+void set_time(time_t t);
+
+/** Attach an external RTC to be used for the C time functions
+ *
+ * Do not call this function from an interrupt while an RTC read/write operation may be occurring 
+ *
+ * @param read_rtc pointer to function which returns current UNIX timestamp
+ * @param write_rtc pointer to function which sets current UNIX timestamp, can be NULL
+ * @param init_rtc pointer to funtion which initializes RTC, can be NULL
+ * @param isenabled_rtc pointer to function wich returns if the rtc is enabled, can be NULL
+ */
+void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void));
+
+#ifdef __cplusplus
+}
+#endif
-- 
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