# \#stm32f4disc **URL:** https://forum.midibox.org/tag/stm32f4disc/1222.md [Latest](https://forum.midibox.org/latest.md) · [Categories](https://forum.midibox.org/categories.md) · [Tags](https://forum.midibox.org/tags.md) --- ## [Understand MIOS32\_SYS\_STM\_PINGET](https://forum.midibox.org/t/understand-mios32-sys-stm-pinget/20702)
**Author:** [@prusaga](https://forum.midibox.org/u/prusaga)\ **Replies:** 2\ **Last updated:** [February 5, 2020, 11:57pm UTC](https://forum.midibox.org/t/understand-mios32-sys-stm-pinget/20702 "2020-02-05T23:57:50Z")
Hello, I am trying to implement foot controller with some tactile switches. I am trying to capture a button press and send MIDI data. I have trying to use the tutorial polling\_j5\_pins. I have changed the user button (PA…