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Function rc_gpio_get_value

Function Documentation

int rc_gpio_get_value(int chip, int pin)

Reads the value of a GPIO pin when in input mode or output mode.

Must call rc_gpio_init first.

Parameters

  • chip – [in] The chip number, /dev/gpiochipX

  • pin – [in] The pin ID

Returns

1 if pin is high, 0 if pin is low, -1 on error