5.4.11. ioctl LIRC_SET_REC_CARRIER_RANGE¶
LIRC_SET_REC_CARRIER_RANGE - Set lower bound of the carrier used to modulate IR receive.
ioctl(int fd, LIRC_SET_REC_CARRIER_RANGE, __u32 *frequency)¶
- File descriptor returned by open().
- Frequency of the carrier that modulates PWM data, in Hz.
This ioctl sets the upper range of carrier frequency that will be recognized by the IR receiver.
To set a range use LIRC_SET_REC_CARRIER_RANGE with the lower bound first and later call LIRC_SET_REC_CARRIER with the upper bound.
22.214.171.124. 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
Generic Error Codes chapter.