hibernus.h

00001 /**    Hibernus Library
00002  *     University of Southampton 2017
00003  *
00004  *      Open-source liberary that enable any of your Mbed project work with transient enegy sources.
00005  *      In order to use this library include the "hibernus.h" header file, and use the "Hibernus()" method at the beginning of you main funtion.
00006  *      For more details and example see the "main.cpp" exampe file, and the attached documnetation
00007  *
00008  *
00009  *     Released under the MIT License: http://mbed.org/license/mit
00010  */
00011 #ifndef HIBERNUS_H_
00012 #define HIBERNUS_H_
00013 
00014 #define Fixed_Add_Vars_Offset 0x40          //the Offset added to the first address of RAM, in order to compute the address of first fixed Add variable
00015 #define Fixed_Add_Vars_Size 0x2C                    //size of the all fixed address variables (0x28 = 44(dec) = 4Bytes*(4 flags+3CoreReg+4LoopVar))
00016 #define flash_end  (FLASH_Start + flash_Size)
00017 #define ramToFlash_sectors_number (RAM_Size / sector_Size)      //how many flash sectors do we have to erase, before saving the RAM content to flash
00018 #define flash_ramSection_start (flash_end - RAM_Size)
00019 
00020 // Declare register integers for the SP, LR, and PC
00021 register volatile unsigned int _SP __asm("r13");
00022 register volatile unsigned int _LR __asm("r14");
00023 register volatile unsigned int _PC __asm("r15");
00024 
00025 // Value written to non-volatile flags to indicate that they are set or not
00026 #define Flag_set 0xFFFF0000
00027 #define Flag_erase  0xFFFFFFFF
00028 
00029 // Declare external assembly language function (in a *.s file)
00030 extern "C" void asm_restore(void);
00031 extern "C" volatile unsigned int* getFlag_1(void);
00032 extern "C" volatile unsigned int* getFlag_2(void);
00033 extern "C" volatile unsigned int* getFlag_3(void);
00034 extern "C" volatile unsigned int* getFlag_4(void);
00035 extern "C" volatile unsigned int* getCore_SP(void);
00036 extern "C" volatile unsigned int* getCore_LR(void);
00037 extern "C" volatile unsigned int* getCore_PC(void);
00038 
00039 void Hibernus(void);
00040 void Save_RAM_Regs(void);
00041 void Restore_Regs(void);
00042 void restore(void);
00043 void hibernate(void);
00044 
00045 #endif