stm32f4discovery/include/arduino_board.h

Board specific configuration for the Arduino API.

ARDUINO_LED
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(2)
const gpio.h::gpio_t arduino_pinmap()
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= {
    ARDUINO_PIN_0,
    ARDUINO_PIN_1,
    ARDUINO_PIN_2,
    ARDUINO_PIN_3,
    ARDUINO_PIN_4,
    ARDUINO_PIN_5,
    ARDUINO_PIN_6,
    ARDUINO_PIN_7,
}
const adc.h::adc_t arduino_analog_map()

Look-up table for the Arduino’s analog pins. 

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= {
    ARDUINO_A0,
    ARDUINO_A1,
    ARDUINO_A2,
    ARDUINO_A3,
}