menu "esp32-ds18b20-example Configuration"

config ONE_WIRE_GPIO
    int "OneWire GPIO number"
	range 0 33
	default 4
	help
		GPIO number (IOxx) to access One Wire Bus.

		Some GPIOs are used for other purposes (flash connections, etc.) and cannot be used.

		GPIOs 34-39 are input-only so cannot be used to drive the One Wire Bus.

config ENABLE_STRONG_PULLUP_GPIO
    bool "Enable strong pull-up controlled by GPIO (MOSFET)"
    default n
    help
        An external circuit can be used to provide a strong pull-up to the One Wire Bus.
        This is useful when the bus has parasitic-powered devices and extra current is
        required to power them, such as during temperature ADC conversions.

        An example of such a circuit for the ESP32 is a P-channel MOSFET (such as the BS250)
        connected Source-to-Drain between a current-limiting resistor (e.g. 270ohm for 12mA
        max at 3.3V), itself connected to VCC, and the One Wire Bus data line. The Gate is
        connected to the GPIO specified here.

config STRONG_PULLUP_GPIO
    int "Strong pull-up GPIO number"
    range 0 33
    default 5
    help
		GPIO number (IOxx) to control the strong pull-up on the One Wire Bus, perhaps
		via a P-channel MOSFET between VCC and the One Wire Bus data line.

		This GPIO will be set as an output and driven high during temperature conversion.
		This would enable the MOSFET providing current to the devices.

		At all other times it will be driven low, switching off the MOSFET and allowing
		the One Wire Bus to operate normally.

		Some GPIOs are used for other purposes (flash connections, etc.) and cannot be used.

		GPIOs 34-39 are input-only so cannot be used to drive the One Wire Bus.
    depends on ENABLE_STRONG_PULLUP_GPIO

endmenu