STM32F105RCT6

brt2015 · ‎2024-09-07

in the process of or at least i want to backup the mcu data and transfer it over to another mcu, i can connect and see the mcu with my pe cyclone fx but when i read and dump the data i get a empty file 768kb.

S3150800000000000000000000000000000000000000E2
S3150800001000000000000000000000000000000000D2
S3150800002000000000000000000000000000000000C2
S3150800003000000000000000000000000000000000B2
S3150800004000000000000000000000000000000000A2
S315080000500000000000000000000000000000000092
S315080000600000000000000000000000000000000082
S315080000700000000000000000000000000000000072
S315080000800000000000000000000000000000000062
S315080000900000000000000000000000000000000052
S315080000A00000000000000000000000000000000042
S315080000B00000000000000000000000000000000032
S315080000C00000000000000000000000000000000022
S315080000D00000000000000000000000000000000012
S315080000E00000000000000000000000000000000002

TDK · ‎2024-09-07

That would explain what you're seeing. It would help if you told us what the RDP option byte is set at. Shouldn't have to guess.

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Tesla DeLorean · ‎2024-09-07

Not sure what you're looking for from the presentation here.

Can you do this with an ST-LINK and STM32 Cube Programmer?

Any indication of a connection error, failure or protection in place?

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SofLit · ‎2024-09-07

Hello,

@brt2015 wrote:

in the process of or at least i want to backup the mcu data and transfer it over to another mcu,

What process did you follow?

@brt2015 wrote:

i can connect and see the mcu with my pe cyclone fx

Did you try with reading the content using STM32CubeProgrammer over ST-LINK?

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brt2015 · ‎2024-09-07

I have a stm32 nucleo-64 stm32f103 and i tried to use the swd port to connect to the target board via pin 1-6 and could not, is this the correct board do i need another one?

brt2015 · ‎2024-09-07

i can connect fine with my pe cyclone fx no errors i don't mind using the stlink i already have if i can get some help on how to set it up to read the target board via pin 1-6. i want to back up all the data on the f105 and put it on another mcu.

brt2015 · ‎2024-09-07

i can see and connect to the mcu see the option bytes and dump the flash file just that's its empty and has no data, could it be locked in a away it allows connection in debug mode but not dump the files?

Tesla DeLorean · ‎2024-09-07

For the NUCLEO to connect to an external target you must pull the jumpers to disconnect the local target.

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Tesla DeLorean · ‎2024-09-07

I'd expect to see data at 0x08000000 if present.

I would expect to see some errors if RDP was enabled.

Being all zeros is odd, does the part work properly otherwise?

Could it have blanked itself? ie aggressive protection mechanism.

Can you get an image from the vendor?

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brt2015 · ‎2024-09-07

what pins do i remove to make it read external target?

SofLit · ‎2024-09-07

Did you de-attach this part?

If not, connect a USB cable on CN1 and use CubeProgrammer to connect to the MCU.

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