00001 /* ---------------------------------------------------------------------------- */ 00002 /* Atmel Microcontroller Software Support */ 00003 /* SAM Software Package License */ 00004 /* ---------------------------------------------------------------------------- */ 00005 /* Copyright (c) 2015, Atmel Corporation */ 00006 /* */ 00007 /* All rights reserved. */ 00008 /* */ 00009 /* Redistribution and use in source and binary forms, with or without */ 00010 /* modification, are permitted provided that the following condition is met: */ 00011 /* */ 00012 /* - Redistributions of source code must retain the above copyright notice, */ 00013 /* this list of conditions and the disclaimer below. */ 00014 /* */ 00015 /* Atmel's name may not be used to endorse or promote products derived from */ 00016 /* this software without specific prior written permission. */ 00017 /* */ 00018 /* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR */ 00019 /* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ 00020 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */ 00021 /* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, */ 00022 /* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */ 00023 /* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */ 00024 /* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */ 00025 /* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */ 00026 /* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ 00027 /* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ 00028 /* ---------------------------------------------------------------------------- */ 00029 00030 /** 00031 * \file 00032 * 00033 * \par Purpose 00034 * 00035 * Interface for Real Time Timer (RTT) controller. 00036 * 00037 * \par Usage 00038 * 00039 * -# Changes the prescaler value of the given RTT and restarts it 00040 * using \ref RTT_SetPrescaler(). 00041 * -# Get current value of the RTT using \ref RTT_GetTime(). 00042 * -# Enables the specified RTT interrupt using \ref RTT_EnableIT(). 00043 * -# Get the status register value of the given RTT using \ref RTT_GetStatus(). 00044 * -# Configures the RTT to generate an alarm at the given time 00045 * using \ref RTT_SetAlarm(). 00046 */ 00047 00048 #ifndef _RTT_ 00049 #define _RTT_ 00050 00051 /*---------------------------------------------------------------------------- 00052 * Headers 00053 *----------------------------------------------------------------------------*/ 00054 00055 #include "chip.h" 00056 00057 #include <stdint.h> 00058 00059 /*---------------------------------------------------------------------------- 00060 * Exported functions 00061 *----------------------------------------------------------------------------*/ 00062 00063 #ifdef __cplusplus 00064 extern "C" { 00065 #endif 00066 00067 extern void RTT_SetPrescaler(Rtt *pRtt, uint16_t wPrescaler); 00068 00069 extern uint32_t RTT_GetTime(Rtt *pRtt); 00070 00071 extern void RTT_EnableIT(Rtt *pRtt, uint32_t dwSources); 00072 00073 extern uint32_t RTT_GetStatus(Rtt *pRtt); 00074 00075 extern void RTT_SetAlarm(Rtt *pRtt, uint32_t dwTime); 00076 00077 #ifdef __cplusplus 00078 } 00079 #endif 00080 00081 #endif /* #ifndef RTT_H */ 00082