Buttons

H1 has two onboard buttons.

Upload button

• Located closest to the STM32 chip.
• Held down while plugging in H1 → boots into Upload Mode.
• Released, or not pressed at all when H1 boots → boots into Attack Mode.
• During script execution, this same button is read by the WAIT_FOR_BUTTON_PRESS instruction, so a script can pause and wait for a physical press before continuing.

Reset button

• Restarts the device in place, without unplugging and replugging it.
• On restart, H1 re-checks the Upload button state — hold Upload and press Reset to jump into Upload Mode without unplugging.