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peripherals-from-datasheet

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Use when reading MCU datasheets or reference manuals in documentation-reading mode for pinouts, electrical limits, register maps, clock trees, timing, or errata, or writing a register-level peripheral driver in driver-writing mode: source locations, init sequence, bit definitions, and bounded waits.

.devin/skills/peripherals-from-datasheet/SKILL.md

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Sep 28, 2026
License
Apache-2.0

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# MCU peripheral documentation and drivers

## Contract

| Field | Bound contract |
|---|---|
| Trigger | Documentation for a target MCU peripheral must be read for a pin, register, clock, timing, or erratum fact, or a register-level driver must be written without a vendor HAL, ported between MCU families, or checked against the reference manual after an example "should work" does not. |
| Authority | Read-only: reads the supplied vendor documents and emits source-located facts in documentation-reading mode, or a register struct, bit definitions, init sequence, and driver skeleton in driver-writing mode, to chat; the user places any driver code in the project. Rollback is not needed because no file is written. No remote mutation. |
| Side effect | Chat output only. |
| Done | Documentation-reading mode reports every requested fact with its document, section, table or figure, value, conditions, and applicable erratum; driver-writing mode matches register offsets and cited bit tables, follows the manual's bring-up order starting with the bus clock, and bounds every busy-wait with a named flag and timeout. |

## Inputs

- Mode: `documentation-reading` for source-located fact extraction, or `driver-writing` for a register-level driver.
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