Possible to use JTAG pins as GPIOs?

(3 posts) (2 voices)

Mars Saxman
Member

I am working on a project which would be well suited for the STM32F103. I would like to use a bunch of Maple boards, since the programming environment is so nice, but the Maple board itself only offers access to 37 of the STM's GPIOs, and my project needs at least 40 (41 would be nice).

My idea is to use the JTAG pins as additional IOs: PA13-PA15 and PB3-PB4.

Before I go digging around in libmaple trying to figure out how it would react to such a usage, has anyone tried this? Any stories of success or failure to relate?

Posted 3 years ago #
x893
Member

What's a problem ? Use gpio remap.

Posted 3 years ago #
Mars Saxman
Member

Of course it's no problem if I'm coding on the bare metal, which is why I am thinking to do it - I just don't know enough about libmaple's internals to know whether it would find such usage problematic.

Posted 3 years ago #

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