1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _STM32F4XX_RTC_H_ 18 #define _STM32F4XX_RTC_H_ 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 #include <stdint.h> 25 #include <seos.h> 26 27 enum RtcClock 28 { 29 RTC_CLK_LSI, 30 RTC_CLK_LSE, 31 RTC_CLK_LSE_BYPASS, 32 }; 33 34 #define RTC_ERR_TOO_BIG -1 35 #define RTC_ERR_TOO_SMALL -2 36 #define RTC_ERR_INTERNAL -3 37 #define RTC_ERR_ACCURACY_UNMET -4 38 39 void rtcInit(void); 40 int rtcSetWakeupTimer(uint64_t delay); 41 uint64_t rtcGetTime(void); 42 43 #define RTC_NUM_BACKUP_REGS 20 44 uint32_t* rtcGetBackupStorage(void); 45 46 47 #ifdef __cplusplus 48 } 49 #endif 50 51 #endif 52