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** [tickets:#266] Bad config value stm32h7x.cfg**
**Status:** new
**Milestone:** 0.9.0
**Created:** Wed May 27, 2020 08:32 AM UTC by Dion Dokter
**Last Updated:** Wed May 27, 2020 08:32 AM UTC
**Owner:** nobody
When trying to use ITM with the STM32H743VIT6, the SWO pin would not generate a
signal. After some searching and getting a tip, it seems like OpenOCD sets some
bits that are no longer supported by STM.
See this comment:
https://github.com/stm32-rs/stm32h7xx-hal/issues/7#issuecomment-634135079
When changing this line
(https://sourceforge.net/p/openocd/code/ci/master/tree/tcl/target/stm32h7x.cfg#l153)
to 'stm32h7x_dbgmcu_mmw 0x004 0x00000007 0', then ITM works again.
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