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The STM32 is the third ARM family by STMicroelectronics. It follows their earlier STR9 family based on the ARM9E core, and STR7 family based on the ARM7TDMI core. The STM32 is based on the ARM Cortex-M family of cores.
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How to disable Tx line of USB to Serial converter?
This can be solved using a simple switch, but I would like to avoid having to flip one when I plug in the stm32 board. … When the stm32 board is powered the CH340's Tx line should be "disconnected" from the Rx pin and the stm32's Tx pin should be connected to it, regardless of whether the CH340 is powered or not. …