BlueSaab 6.1 - No Response from Target

[sdaly17]

Hi,

I just finished assembling my first BlueSaab 6.1 board, and I'm not sure if the board is functioning correctly. Currently, I only get a solid red power LED, a solid green LED on the board, and an error stating that there is no response from the target when I attempt to flash it from Windows.

The only change I made from the provided BOM was swapping the STM32F103RBT7 for an STM32F103RBT6 that I removed from an STM Nucleo board due to the chip shortage.

I am not sure if the issue would be related to the microchip itself or another problem on the board.

Any help would be greatly appreciated!

[homerisback]

Hi,
I don't thing swap of STM32 could prevent it from working.
Did you follow the STM32 programming process ? You need to put chip into upload mode to accept incoming comms from progamming tool. Here are the steps :

1. Press and hold BOOT0 button
2. While holding BOOT0, press and release RESET button
3. Release BOOT0 button

Now STM32 should be in DFU mode and accept firmware over UART1.

[sdaly17]

Hi,

I did try following that procedure and still get the same error. Is there supposed to be any visual indication on the board that it is in DFU mode?

Thank you!

[Edma]

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