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Can JTAG boundary scan cells be accessed with CubeMonitor?

AMabi.1
Associate III

Dear all,

I am desperately trying to access the JTAG's cells registers to monitor PWMs on a STM32F407G-DISC1. I have a few questions :

  1. To my understanding, SWD is connected to the DP (Debug Port) which itself is connected to various debug systems (JTAG, Trace, ...). So, I should be able to access the JTAG using the SWD, right? If not the following is meaningless.
  2. I successfully connected the probe to the CubeMonitor using the SWD protocol, I can monitor variables and peripherals' registers. I also have the possibility to configure the probe for the JTAG protocol. However doing so I have the error "not connected ! Unknown JTAG chain (f6)". What and why? All I found was this : https://community.st.com/s/question/0D53W0000082ZfNSAU/cannot-get-cube-monitor-to-connect-to-stm32g431cb-on-bg431besc1-board-not-connected-unknown-jtag-chain-16 and it does not solve the problem.

If someone is able to shine a light on any of these I would be grateful.

Thanks.

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