How to use an EEPROM emulation library?

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How to use an EEPROM emulation library?

(10 posts) (4 voices)

Started 1 year ago by ss
Latest reply from ss

ss
Member

The Maple doesn’t have EEPROM; it uses flash instead. There is an EEPROM emulation library by x893, but how to use the library?

I download the lib, extract the files to libraries folder, like this:
E:\maple-ide-0.0.12-windowsxp32\libraries\EEPROM

When I compiling the EEROM_example, the IDE display:
cpp:284: error: "EEPROM_START_ADDRESS' was not declared in this scope
cpp:285: error: "EEPROM_PAGE_SIZE' was not declared in this scope

library download
http://akb77.com/g/files/media/EEPROM.rar
see
http://akb77.com/g/stm32/maple-eeprom-emulation-library/

Posted 1 year ago #
gbulmer
Moderator

@ss - How are you trying to build the program? Using the LeafLabs' Maple IDE, or some other way?

(Full Disclosure: I am not a member of LeadLabs staff)

Posted 1 year ago #
ss
Member

I use Maple IDE to compiling.

Posted 1 year ago #
gbulmer
Moderator

@ss - To help track down the bugs, I'd recommend putting the two source files in the same folder (directory) as your project.
Add EEPROM.cpp to the project by creating a new tab for the project within the IDE.

Posted 1 year ago #
x893
Member

You need define EEPROM_START_ADDRESS = where eeprom start in flash (ususally at top of flash) and EEPROM_PAGE_SIZE = flash page size (for 103RE = 0x800)

See more detail here

http://www.st.com/web/catalog/tools/FM147/CL1794/SC961/SS1743/LN1734/PF257846

Posted 1 year ago #
ss
Member

Thank you very much!
Now I can upload the EEROM_example code to the board use USB serial and run it!

My MCU is STM32F103C8T6(not STM32F103CB), and I download the maple_mini_boot.bin to MCU by j-link.
The EEPROM.h has no define of STM32F103C8T6, so I define the EEPROM_PAGE_SIZE and EEPROM_START_ADDRESS like this:

#define EEPROM_PAGE_SIZE (uint16)0x400 /* Page size = 1KByte */
#define EEPROM_START_ADDRESS ((uint32)(0x8000000 + 64 * 1024 - 2 * EEPROM_PAGE_SIZE))
//STM32F103C8T6 has 64k flash, and the maple mini use STM32F103CB has 128k flash.

uncomment like follow:

//#ifndef EEPROM_PAGE_SIZE
// #if defined (MCU_STM32F103RB)
// #define EEPROM_PAGE_SIZE (uint16)0x400 /* Page size = 1KByte */
// #elif defined (MCU_STM32F103ZE) || defined (MCU_STM32F103RE) || defined (MCU_STM32F103RD)
// #define EEPROM_PAGE_SIZE (uint16)0x800 /* Page size = 2KByte */
// #else
// #error "No MCU type specified. Add something like -DMCU_STM32F103RB to your compiler arguments (probably in a Makefile)."
// #endif
//#endif

//#ifndef EEPROM_START_ADDRESS
// #if defined (MCU_STM32F103RB)
// #define EEPROM_START_ADDRESS ((uint32)(0x8000000 + 128 * 1024 - 2 * EEPROM_PAGE_SIZE))
// #elif defined (MCU_STM32F103ZE) || defined (MCU_STM32F103RE)
// #define EEPROM_START_ADDRESS ((uint32)(0x8000000 + 512 * 1024 - 2 * EEPROM_PAGE_SIZE))
// #elif defined (MCU_STM32F103RD)
// #define EEPROM_START_ADDRESS ((uint32)(0x8000000 + 384 * 1024 - 2 * EEPROM_PAGE_SIZE))
// #else
// #error "No MCU type specified. Add something like -DMCU_STM32F103RB to your compiler arguments (probably in a Makefile)."
// #endif
//#endif

Posted 1 year ago #
ss
Member

I run the EEPROM example, and I have some problem:

1.I format the flash then display pages top/bottom, the display 800F800: 0000 0003 is not FFFF FFFF, what's mean?

2.I write/read variable many times, acording the define in EEPROM_example, the "uint16 DataWrite = 0;" and "uint16 AddressWrite = 0x10;", and "++DataWrite" auto increase. But it write start from 800F804 to 800F81C, and the AddressWrite are same(0x10 like a data), like this:

800F800 : 0000 0003
800F804 : 0000 0010
800F808 : 0001 0010
800F80C : 0002 0010
800F810 : 0003 0010
800F814 : 0004 0010
800F818 : 0005 0010
800F81C : 0006 0010

When DataWrite increase to 0x7 or more, the result seems to be lost:
Page 0 Top Page 1
800F800 : 0000 0003 800FC00 : FFFF FFFF
800F804 : 0000 0010 800FC04 : FFFF FFFF
800F808 : 0001 0010 800FC08 : FFFF FFFF
800F80C : 0002 0010 800FC0C : FFFF FFFF
800F810 : 0003 0010 800FC10 : FFFF FFFF
800F814 : 0004 0010 800FC14 : FFFF FFFF
800F818 : 0005 0010 800FC18 : FFFF FFFF
800F81C : 0006 0010 800FC1C : FFFF FFFF
Page 0 Bottom Page 1
800FBE0 : FFFF FFFF 800FFE0 : FFFF FFFF
800FBE4 : FFFF FFFF 800FFE4 : FFFF FFFF
800FBE8 : FFFF FFFF 800FFE8 : FFFF FFFF
800FBEC : FFFF FFFF 800FFEC : FFFF FFFF
800FBF0 : FFFF FFFF 800FFF0 : FFFF FFFF
800FBF4 : FFFF FFFF 800FFF4 : FFFF FFFF
800FBF8 : FFFF FFFF 800FFF8 : FFFF FFFF
800FBFC : FFFF FFFF 800FFFC : FFFF FFFF

What's the virtual address really mean?
How to use Page 0 Bottom, Page 1 Top and Page 1 Bottom?
It seems the AddressWrite is saved like a data.

all the results:
///////////////////////////////////////////////////////////////////////
Press :
0 display configuration
1 set configuration to 0x801F000 / 0x801F800 / 0x400 (RB MCU)
2 set configuration to 0x801F000 / 0x801F800 / 0x800 (ZE/RE MCU)
3 write/read variable
4 increment address
5 display pages top/bottom
6 initialize EEPROM
7 format EEPROM
7
EEPROM.format() : 0
5
Page 0 Top Page 1
800F800 : 0000 0003 800FC00 : FFFF FFFF
800F804 : FFFF FFFF 800FC04 : FFFF FFFF
800F808 : FFFF FFFF 800FC08 : FFFF FFFF
800F80C : FFFF FFFF 800FC0C : FFFF FFFF
800F810 : FFFF FFFF 800FC10 : FFFF FFFF
800F814 : FFFF FFFF 800FC14 : FFFF FFFF
800F818 : FFFF FFFF 800FC18 : FFFF FFFF
800F81C : FFFF FFFF 800FC1C : FFFF FFFF
Page 0 Bottom Page 1
800FBE0 : FFFF FFFF 800FFE0 : FFFF FFFF
800FBE4 : FFFF FFFF 800FFE4 : FFFF FFFF
800FBE8 : FFFF FFFF 800FFE8 : FFFF FFFF
800FBEC : FFFF FFFF 800FFEC : FFFF FFFF
800FBF0 : FFFF FFFF 800FFF0 : FFFF FFFF
800FBF4 : FFFF FFFF 800FFF4 : FFFF FFFF
800FBF8 : FFFF FFFF 800FFF8 : FFFF FFFF
800FBFC : FFFF FFFF 800FFFC : FFFF FFFF
3
EEPROM.write(0x10, 0x0) : Status : 0
EEPROM.read(0x10, &..) = 0x0 : Status : 0
5
Page 0 Top Page 1
800F800 : 0000 0003 800FC00 : FFFF FFFF
800F804 : 0000 0010 800FC04 : FFFF FFFF
800F808 : FFFF FFFF 800FC08 : FFFF FFFF
800F80C : FFFF FFFF 800FC0C : FFFF FFFF
800F810 : FFFF FFFF 800FC10 : FFFF FFFF
800F814 : FFFF FFFF 800FC14 : FFFF FFFF
800F818 : FFFF FFFF 800FC18 : FFFF FFFF
800F81C : FFFF FFFF 800FC1C : FFFF FFFF
Page 0 Bottom Page 1
800FBE0 : FFFF FFFF 800FFE0 : FFFF FFFF
800FBE4 : FFFF FFFF 800FFE4 : FFFF FFFF
800FBE8 : FFFF FFFF 800FFE8 : FFFF FFFF
800FBEC : FFFF FFFF 800FFEC : FFFF FFFF
800FBF0 : FFFF FFFF 800FFF0 : FFFF FFFF
800FBF4 : FFFF FFFF 800FFF4 : FFFF FFFF
800FBF8 : FFFF FFFF 800FFF8 : FFFF FFFF
800FBFC : FFFF FFFF 800FFFC : FFFF FFFF
3
EEPROM.write(0x10, 0x1) : Status : 0
EEPROM.read(0x10, &..) = 0x1 : Status : 0
3
EEPROM.write(0x10, 0x2) : Status : 0
EEPROM.read(0x10, &..) = 0x2 : Status : 0
3
EEPROM.write(0x10, 0x3) : Status : 0
EEPROM.read(0x10, &..) = 0x3 : Status : 0
3
EEPROM.write(0x10, 0x4) : Status : 0
EEPROM.read(0x10, &..) = 0x4 : Status : 0
3
EEPROM.write(0x10, 0x5) : Status : 0
EEPROM.read(0x10, &..) = 0x5 : Status : 0
3
EEPROM.write(0x10, 0x6) : Status : 0
EEPROM.read(0x10, &..) = 0x6 : Status : 0
3
EEPROM.write(0x10, 0x7) : Status : 0
EEPROM.read(0x10, &..) = 0x7 : Status : 0
3
EEPROM.write(0x10, 0x8) : Status : 0
EEPROM.read(0x10, &..) = 0x8 : Status : 0
3
EEPROM.write(0x10, 0x9) : Status : 0
EEPROM.read(0x10, &..) = 0x9 : Status : 0
5
Page 0 Top Page 1
800F800 : 0000 0003 800FC00 : FFFF FFFF
800F804 : 0000 0010 800FC04 : FFFF FFFF
800F808 : 0001 0010 800FC08 : FFFF FFFF
800F80C : 0002 0010 800FC0C : FFFF FFFF
800F810 : 0003 0010 800FC10 : FFFF FFFF
800F814 : 0004 0010 800FC14 : FFFF FFFF
800F818 : 0005 0010 800FC18 : FFFF FFFF
800F81C : 0006 0010 800FC1C : FFFF FFFF
Page 0 Bottom Page 1
800FBE0 : FFFF FFFF 800FFE0 : FFFF FFFF
800FBE4 : FFFF FFFF 800FFE4 : FFFF FFFF
800FBE8 : FFFF FFFF 800FFE8 : FFFF FFFF
800FBEC : FFFF FFFF 800FFEC : FFFF FFFF
800FBF0 : FFFF FFFF 800FFF0 : FFFF FFFF
800FBF4 : FFFF FFFF 800FFF4 : FFFF FFFF
800FBF8 : FFFF FFFF 800FFF8 : FFFF FFFF
800FBFC : FFFF FFFF 800FFFC : FFFF FFFF

Posted 1 year ago #
ss
Member

Sorry! I should read AN2594 Application note first.

1."A header field that occupies the first 16-bit half word of each page indicates the page status."

2."Each variable element is defined by a virtual address and a value to be stored in Flash
memory for subsequent retrieval or update (in the implemented software both virtual
address and data are 16 bits long). When data is modified, the modified data associated
with the earlier virtual address is stored into a new Flash memory location. Data retrieval
returns the modified data in the latest Flash memory location."

To x893: Thank you for your EEPROM emulation library! It is very useful!

Posted 1 year ago #
ala42
Member

//STM32F103C8T6 has 64k flash
According to the datasheet this statement is correct. In reality it has the same 128k flash as the CB version.

Posted 1 year ago #
ss
Member

Awesome! I modify 64k to 128k, and it really work!
Thank you very much, ala42!

//////////////////////////////////////////////////
5\CR\LF
Page 0 Top Page 1\CR\LF
801F800 : 0000 0000 801FC00 : FFFF FFFF\CR\LF
801F804 : 00AA 0055 801FC04 : FFFF FFFF\CR\LF
801F808 : 00AB 0055 801FC08 : FFFF FFFF\CR\LF
801F80C : FFFF FFFF 801FC0C : FFFF FFFF\CR\LF
801F810 : FFFF FFFF 801FC10 : FFFF FFFF\CR\LF
801F814 : FFFF FFFF 801FC14 : FFFF FFFF\CR\LF
801F818 : FFFF FFFF 801FC18 : FFFF FFFF\CR\LF
801F81C : FFFF FFFF 801FC1C : FFFF FFFF\CR\LF
Page 0 Bottom Page 1\CR\LF
801FBE0 : FFFF FFFF 801FFE0 : FFFF FFFF\CR\LF
801FBE4 : FFFF FFFF 801FFE4 : FFFF FFFF\CR\LF
801FBE8 : FFFF FFFF 801FFE8 : FFFF FFFF\CR\LF
801FBEC : FFFF FFFF 801FFEC : FFFF FFFF\CR\LF
801FBF0 : FFFF FFFF 801FFF0 : FFFF FFFF\CR\LF
801FBF4 : FFFF FFFF 801FFF4 : FFFF FFFF\CR\LF
801FBF8 : FFFF FFFF 801FFF8 : FFFF FFFF\CR\LF

Posted 1 year ago #

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