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rtc_time.h
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2013 ARM Limited 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 00017 #include <time.h> 00018 00019 #ifdef __cplusplus 00020 extern "C" { 00021 #endif 00022 00023 /** Implementation of the C time.h functions 00024 * 00025 * Provides mechanisms to set and read the current time, based 00026 * on the microcontroller Real-Time Clock (RTC), plus some 00027 * standard C manipulation and formating functions. 00028 * 00029 * Example: 00030 * @code 00031 * #include "mbed.h" 00032 * 00033 * int main() { 00034 * set_time(1256729737); // Set RTC time to Wed, 28 Oct 2009 11:35:37 00035 * 00036 * while(1) { 00037 * time_t seconds = time(NULL); 00038 * 00039 * printf("Time as seconds since January 1, 1970 = %d\n", seconds); 00040 * 00041 * printf("Time as a basic string = %s", ctime(&seconds)); 00042 * 00043 * char buffer[32]; 00044 * strftime(buffer, 32, "%I:%M %p\n", localtime(&seconds)); 00045 * printf("Time as a custom formatted string = %s", buffer); 00046 * 00047 * wait(1); 00048 * } 00049 * } 00050 * @endcode 00051 */ 00052 00053 /** Set the current time 00054 * 00055 * Initialises and sets the time of the microcontroller Real-Time Clock (RTC) 00056 * to the time represented by the number of seconds since January 1, 1970 00057 * (the UNIX timestamp). 00058 * 00059 * @param t Number of seconds since January 1, 1970 (the UNIX timestamp) 00060 * 00061 * Example: 00062 * @code 00063 * #include "mbed.h" 00064 * 00065 * int main() { 00066 * set_time(1256729737); // Set time to Wed, 28 Oct 2009 11:35:37 00067 * } 00068 * @endcode 00069 */ 00070 void set_time(time_t t); 00071 00072 #ifdef __cplusplus 00073 } 00074 #endif
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