Hi Rysard Suboc,
I have test the FSEC byte modification in the KSDK2.0_FRDM-KL82 mdk project.
1. modify 0X40C address data to 0XBF in the start file
2. Download the code to the board
3. use the JLINK Commander to check the data
You can find the 0X40C is 0XBF now.
You also can check it in our official ksdk2.0 sample code.
Wish it helps you!
If you still have question, please let me know!
Have a great day,
Kerry
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Hi Rysard Suboc,
1. Download the newest JLINK driver and install it.
SEGGER - The Embedded Experts - Downloads
2 Please change your board's debugger firmware with the newest JLINK firmware.
(1) unplug the board
(2) press the RESET button, hold on it, then plug the board to your PC, you will find your board is a device named as "BOOTLOADER", release the button.
(3) Send the newest JLINK firmware .bin file to your board:
SEGGER - The Embedded Experts - Downloads
(4) unplug the board, then plug it again, your board will be a device named as "FRDM=KL82ZJ"
3. Use MDK project, modify FSEC to 0xbf in the startup_mkl82z7.s
Before you download the code, please generate the hex file
Then build it, open the hex file from folder:SDK_2.0_FRDM-KL82Z\boards\frdmkl82z\demo_apps\hello_world\mdk\debug
Check 0X40C address:
Whether it is 0XBF?
Please also tell me your MDK IDE reversion.
Please try it again on your side, any test result, please let me know!
Have a great day,
Kerry
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Hi Rysard Suboc,
You just add the project, no source file.
But it doesn't matter, because you hex file is correct, I think it should caused by the download configuration in the IDE.
Please check the following picture:
Choose erase sectors instead of erase full chip.
Please try it again on your side.
Wish it helps you!
Any test result, please let me know!
Have a great day,
Kerry
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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Hi Rysard Suboc,
Another way to check your flash address 0x40c, you can add the printf 0x40c code in your helloworld like this:
int main(void)
{
char ch;
/* Init board hardware. */
BOARD_InitPins();
BOARD_BootClockRUN();
BOARD_InitDebugConsole();
PRINTF("hello world.\r\n");
PRINTF("0x40c data = %x.\r\n", *(uint8_t *)(0x40c));
while (1)
{
ch = GETCHAR();
PUTCHAR(ch);
}
}
Then you will get the uart data in the PC after reset:
You can find the 0X40C data is 0xbf.
After the chip is secured, the SWD port cannot access the memory resources of the MCU.
So, after power off the board, then power on the board again, and connect with the jlink command, I think the JLINK demand can't acces the memory, so it do the mass erase function automatically.
Wish it helps you!
Have a great day,
Kerry
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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