How to programming ROP option byte via swim?

[yskim2]

Posted on March 17, 2011 at 04:09

How to programming ROP option byte via swim?

#programmer #stm8

[brazov22]

Posted on May 17, 2011 at 15:12

to write on option byte area you need to set7reset bit 7 of FLASH_CR2/FLASH_NCR2 register. Remenber to enter keys on FLASH_DUKR register before.

If ROP is activated, remove it writing 00h on 4800h then reprogram option bytes as you prefer. Note that removing ROP, whole program memory is erased.

brazov2

[yskim2]

Posted on May 17, 2011 at 15:12

Thanks Mr brazov.

I Solved this problem

STM8L15x devices are some different than others. My code is below.   swim_enter();   delay_10xus(Time_us(10000));   icp_eeprom_unlock();      swim_write_register(STM8_FLASH_CR2, (STM8_FLASH_CR2_ERASE));    swim_write_register(0x4800, 0x00);      delay_10xus(Time_us(6000));       swim_write_register(STM8_FLASH_CR2, (STM8_FLASH_CR2_OPT));   swim_write_register(0x4800, 0xAA); Thanks a lot..

[ajacobo]

Posted on May 17, 2011 at 15:12

Hi Kim yongsu,

Please could I have a copy of your code, I am trying to make my own programmer but I cannot make it yet, I would like to know if you can share your code to implement it in my programmer. Thank you very much

[ncliv2001]

Posted on May 17, 2011 at 15:12

Hello,

Do you have any schematic for such a STM8 programmer? I'd like to build one for me. Thanks

[pripoy08]

Posted on October 18, 2013 at 12:00

Hello!

Help please!STM8S003F3The sequence of operations Read out protection ENABLED'' write_Byte(FLASH_DUKR,0xAE);  write_Byte(FLASH_DUKR,0x56); write_Byte(FLASH_CR2,0x80);     write_Byte(FLASH_NCR2,0x7F); uint32_t time_set = 3000;    while(time_set-- != 0)    {      if(read_Byte(FLASH_IAPSR)&(1<<3))      {        wait_time(2000);        write_Byte(OPTION_BYTE,0xAA);      }    }''Upon reboot, the MC, reading OPTION_BYTE returns 0xAA,after the restart, reading OPTION_BYTE and the Flash returns 0x71The sequence of operations Read Out Protection DISABLED'' write_Byte(FLASH_DUKR,0xAE);  write_Byte(FLASH_DUKR,0x56); write_Byte(FLASH_CR2,0x80);     write_Byte(FLASH_NCR2,0x7F); uint32_t time_set = 3000;    while(time_set-- != 0)    {      if(read_Byte(FLASH_IAPSR)&(1<<3))      {        wait_time(2000);        write_Byte(OPTION_BYTE,0x00);      }    }''After recording OPTION_BYTE MC stop responding to any action. SWIM interface does not work.