6.5.10. ioctl LIRC_SET_REC_CARRIER¶
LIRC_SET_REC_CARRIER - Set carrier used to modulate IR receive.
int ioctl(int fd, LIRC_SET_REC_CARRIER, __u32 *frequency)
File descriptor returned by open().
Frequency of the carrier that modulates PWM data, in Hz.
Set receive carrier used to modulate IR PWM pulses and spaces.
If called together with ioctl LIRC_SET_REC_CARRIER_RANGE, this ioctl sets the upper bound frequency that will be recognized by the device.
220.127.116.11. 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.