Downloading binary using Bootloader Mode using USART

[KGane.1]

I have STM32H753XI-EVAL2 board with CN2(USART1) connected to PC. Switch 1 position is set to 1(Sys Mem).

I am getting error when tried to connect using STM32 CubeProgrammer.

19:43:22 : RTS low

 19:43:22 : DTR low

 19:43:22 : Serial Port COM18 is successfully opened.

 19:43:22 : Port configuration: parity = even, baudrate = 9600, data-bit = 8,           stop-bit = 1.0, flow-control = off

 19:43:24 : Timeout error occured while waiting for acknowledgement.

 19:43:24 : Timeout error occured while waiting for acknowledgement.

 19:43:24 : Error: Activating device: KO. Please, verify the boot mode configuration and check the serial port configuration. Reset your device then try again... 

Did anyone observe the same?

[thundertronics.com]

Have you checked JP3 note in user manual, also check option byte values using ST-Link.

[KGane.1]

Yes. Tried with JP3 and switch. But doesn't work. Timeout for acknowledgement.

[mƎALLEm]

Dear @KGane.1​ ,

Did you try different baudrates? Could you please try with 115200 baud?

SofLit

[KGane.1]

Tried with range of baudrates. 2800 to 115K. But doesn't work. Timeout for acknowledgement.

[KGane.1]

Seems there are open issues in H7 System Bootloader. I am seeing problem in both H743/53 and F769 EVAL boards. I have F407 which works fine.

Based on the discussion thread

https://community.st.com/s/feed/0D50X0000A4pWrISQU

The recovery is to use STLINK and then try USART1 to program. Unfortunately I don't have STLINK right now. I have to wait till I get one..

[Pavel A.]

STM32H753XI-EVAL2 board has a ST-LINK built in.

[KGane.1]

@Pavel A.​ Thank You!

I can connect using STLINK and USB DFU. But USART1 is failing still.

As mentioned in other thread, should i have to disconnect pull-up USB pins, in order to use USART1?