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Hi, I have STM32H503 mounted on my board and to trying flash the code via SWD line. However, the tool says target not detected. The supply lines show 3.3V and boot pin is grounded.  I am using pins- SWDIO, SWCLK, RESET and GND. 
Originally a reply here: https://community.st.com/t5/stm32-mcus-products/using-swd-pins-to-flash-code/td-p/759046Split to a new thread as this is a new question.Thank you for the solution. However, I have another doubt here. While referring to: STM32...
Hi, I am using STM32H503 controller and wanted to understand if SWDIO pin can be used to flash the code.
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