29 lines
540 B
Markdown
29 lines
540 B
Markdown
# Blue Pill Notes
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## Baseline
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- Board: STM32F103C8T6 Blue Pill
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- Core: Cortex-M3
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- Default target: `thumbv7m-none-eabi`
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## LED
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- Most Blue Pill boards wire the onboard LED to `PC13`
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- It is usually active-low
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- `set_low()` usually turns it on
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- `set_high()` usually turns it off
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## Button Assumption
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- The repo button examples use `PA0`
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- Assumed wiring:
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- button between `PA0` and `3V3`
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- firmware enables internal pull-down
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## Probe Wiring
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- `SWDIO` -> `SWDIO`
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- `SWCLK` -> `SWCLK`
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- `GND` -> `GND`
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- `3V3` -> `3V3` reference
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