periph/gpio: enable API usage for expanders #9690
Description
This issue aims to track the progress on the definitions for the GPIO API extensions, and its implementations on the corresponding CPUs.
- API proposal (#9582)
- periph API interception and CPU support (periph/gpio: support for extension API #9860, periph/dac: support for DAC extension API #10512, periph/adc: support for ADC extension API #10527, periph/pwm: support for PWM extension API #10533 )
- Redirection code implementation (periph/gpio: support for extension API (part 2) #9958, periph/dac: support for DAC extension API #10512, periph/adc: support for ADC extension API #10527, periph/pwm: support for PWM extension API #10533)
- Tests (periph/gpio: support for extension API #9860 and periph/gpio: support for extension API (part 2) #9958)
- GPIO expander support (WIP drivers/pca95xx: support for I2C GPIO expanders #9054 and WIP drivers: add PCF857X I2C I/O expander driver #10430)
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Area: Device driversThe contributors require help from other members of the communityThe issue/PR is used as a discussion starting point about the item of the issue/PRIntegration Process: PR contains or issue proposes an API change. Should be handled with care.State: Tell state-bot to ignore this issueThe issue suggests enhanceable parts / The PR enhances parts of the codebase / documentation