is there any external tool that could access EEPROM?

vicki19880929 · ‎2014-05-04

Posted on May 05, 2014 at 04:37

Hi all,

I'm using stm32l152rtc6 with built-in eeprom (8k). I wonder if there's any tool at the host side that allows me to read/write the eeprom other than using ST library code for the mcu? (STM32L1xx_StdPeriph_Lib_V1.2.0\Project\STM32L1xx_StdPeriph_Examples\FLASH\Data_Program) In this way, the administrator could write data to eeprom, while the MCU user could not write but only read.

I did some search online, but haven't found a good tool for my purpose. :( Hopefully it could be something like dfu-util.

Thanks,

Shan

vicki19880929 · ‎2014-05-05

Posted on May 06, 2014 at 04:46

I found that for Atmel user they could use avrdude terminal to dump the EEPROM message. Any ideas for STM32L? Thanks.

Tesla DeLorean · ‎2014-05-05

Posted on May 06, 2014 at 05:04

Well one could presumably use the System Loader, either via the protocol directly, or with a simple applet to access the EEPROM, or other external memories.

Keil offers the ''STM32L1xx Data EEPROM'' as one of the core applets

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vicki19880929 · ‎2014-05-05

Posted on May 06, 2014 at 05:58

Thanks clive,

I'll download Keil and give it a try. Could you also point me to any applets for linux users as well if possible? Really appreciated.

de_koepi · ‎2014-05-06

Posted on May 06, 2014 at 15:05

I don't know if this is useful for you, but for my STM32F103 dev board I use USB-to-RS232/UART communication on the USART1 pins. I have to set a switch (Boot0) and reset the board so that the firmware is in bootloader mode and doesn't start the user code. Then I can flash my code with

https://code.google.com/p/stm32flash/

Works on Mac OS X, should work as well on Linux.

os_kopernika · ‎2014-05-06

Posted on May 06, 2014 at 23:13

There is an STM32 ST-link Utility available. It also supports the command line interface (easy to integrate with makefile)

vicki19880929 · ‎2014-05-06

Posted on May 07, 2014 at 04:47

Thanks a lot, Brutte!

Didn't notice that stlink has such functionality. I tried their software on Windows and am able to read/write EEPROM data. I'll test it on Linux as well.

Really appreciated. 🙂

vicki19880929 · ‎2014-05-06

Posted on May 07, 2014 at 08:10

Hi all,

With ST-LINK Utility, I can read/write EEPROM using ST_LINK_CLI.exe on Windows.

ST_LINK_CLI.exe -w32 0x08080000 0x77FF
ST_LINK_CLI.exe -r8 0x08080000 10

I tested with

https://github.com/texane/stlink

on Linux and was able to read EEPROM using st-flash.

st-flash read eeprom.hex 0x08080000 10

However, when I try to write the EEPROM with st-flash, there was an error:

[root@localhost stlink]$ st-flash write eeprom.hex 0x08080000

2014-05-07T14:03:24 INFO src/stlink-common.c: Loading device parameters....

2014-05-07T14:03:24 INFO src/stlink-common.c: Device connected is: L1 Medium-Plus-density device, id 0x10086427

2014-05-07T14:03:24 INFO src/stlink-common.c: SRAM size: 0x8000 bytes (32 KiB), Flash: 0x40000 bytes (256 KiB) in pages of 256 bytes

stlink_sram_flash() == -1

It seemed like address 0x08080000 (EEPROM starting address) is not accessible by st-flash.

I wonder if there is similar stlink tool like ST_LINK_CLI.exe in Linux? Or did I do anything wrong?

Thanks.