rust-stm32/docs/hardware/blue-pill.md

Blue Pill Notes

Baseline

• Board: STM32F103C8T6 Blue Pill
• Core: Cortex-M3
• Default target: thumbv7m-none-eabi

LED

• Most Blue Pill boards wire the onboard LED to PC13
• It is usually active-low
• set_low() usually turns it on
• set_high() usually turns it off

Button Assumption

• The repo button examples use PA0
• Assumed wiring:
  • button between PA0 and 3V3
  • firmware enables internal pull-down

Probe Wiring

• SWDIO -> SWDIO
• SWCLK -> SWCLK
• GND -> GND
• 3V3 -> 3V3 reference