docs: add GPIO pin selection guidelines for Radxa ZERO - #2000
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tangzz-radxa wants to merge 1 commit into
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docs: add GPIO pin selection guidelines for Radxa ZERO#2000tangzz-radxa wants to merge 1 commit into
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Add a new page under zero/zero/app-development with guidelines for selecting GPIO pins, addressing issue radxa-docs#503. Content covers: - Pins shared with other hardware functions (SPI/I2C/PWM) cannot be GPIO - ADC pins (15, 26) cannot be used as GPIO output - Avoid debug console pins (8, 10) - Avoid hardware-revision-dependent pins (35, 38) - Avoid open-drain pins (22, 36) Bilingual zh/en versions included.
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Fixes #503
Summary
Add a new page GPIO Pin Selection Guidelines under
zero/zero/app-development(bilingual zh/en).Background
GitHub issue #503 requested documentation for choosing GPIO pins wisely, using Radxa ZERO as an example. The proposed content was reviewed and verified against the official ZERO 40-pin pinout (
docs/zero/zero/hardware-design/hardware-interface.md):Changes
docs/zero/zero/app-development/gpio-pin-selection.md(zh)i18n/en/docusaurus-plugin-content-docs/current/zero/zero/app-development/gpio-pin-selection.md(en)Docs-only change; no behavior/functionality affected.