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The ``GPIOHANDLE_REQUEST_ACTIVE_LOW`` flag controls the mapping between physical values (high/low) and logical values (active/inactive). If ``GPIOHANDLE_REQUEST_ACTIVE_LOW`` is not set then high is active and low is inactive. If ``GPIOHANDLE_REQUEST_ACTIVE_LOW`` is set then low is active and high is inactive.”h]”(hŒSThe values returned are logical, indicating if the line is active or inactive. The ”…””}”(hj×h²hh³Nh´Nubj±)”}”(hŒ!``GPIOHANDLE_REQUEST_ACTIVE_LOW``”h]”hŒGPIOHANDLE_REQUEST_ACTIVE_LOW”…””}”(hjßh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j°hj×ubhŒg flag controls the mapping between physical values (high/low) and logical values (active/inactive). If ”…””}”(hj×h²hh³Nh´Nubj±)”}”(hŒ!``GPIOHANDLE_REQUEST_ACTIVE_LOW``”h]”hŒGPIOHANDLE_REQUEST_ACTIVE_LOW”…””}”(hjñh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j°hj×ubhŒ8 is not set then high is active and low is inactive. If ”…””}”(hj×h²hh³Nh´Nubj±)”}”(hŒ!``GPIOHANDLE_REQUEST_ACTIVE_LOW``”h]”hŒGPIOHANDLE_REQUEST_ACTIVE_LOW”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j°hj×ubhŒ0 is set then low is active and high is inactive.”…””}”(hj×h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hñh³hÇh´K'hj¸h²hubhò)”}”(hŒ6The values of both input and output lines may be read.”h]”hŒ6The values of both input and output lines may be read.”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hñh³hÇh´K.hj¸h²hubhò)”}”(hXFor output lines, the value returned is driver and configuration dependent and may be either the output buffer (the last requested value set) or the input buffer (the actual level of the line), and depending on the hardware and configuration these may differ.”h]”hXFor output lines, the value returned is driver and configuration dependent and may be either the output buffer (the last requested value set) or the input buffer (the actual level of the line), and depending on the hardware and configuration these may differ.”…””}”(hj)h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hñh³hÇh´K0hj¸h²hubhò)”}”(hŒÙThis ioctl can also be used to read the line value for line events, substituting the ``event_fd`` for the ``handle_fd``. 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