.. -*- coding: utf-8; mode: rst -*- .. _lirc_set_rec_carrier_range: ******************************** ioctl LIRC_SET_REC_CARRIER_RANGE ******************************** Name ==== LIRC_SET_REC_CARRIER_RANGE - Set lower bound of the carrier used to modulate IR receive. Synopsis ======== .. c:function:: int ioctl( int fd, LIRC_SET_REC_CARRIER_RANGE, __u32 *frequency ) :name: LIRC_SET_REC_CARRIER_RANGE Arguments ========= ``fd`` File descriptor returned by open(). ``frequency`` Frequency of the carrier that modulates PWM data, in Hz. Description =========== This ioctl sets the upper range of carrier frequency that will be recognized by the IR receiver. .. note:: To set a range use :ref:`LIRC_SET_REC_CARRIER_RANGE ` with the lower bound first and later call :ref:`LIRC_SET_REC_CARRIER ` with the upper bound. Return Value ============ On success 0 is returned, on error -1 and the ``errno`` variable is set appropriately. The generic error codes are described at the :ref:`Generic Error Codes ` chapter.