5.3.12. ioctl LIRC_SET_REC_CARRIER_RANGE

5.3.12.1. Name

LIRC_SET_REC_CARRIER_RANGE - Set lower bond of the carrier used to modulate IR receive.

5.3.12.2. Synopsis

int ioctl(int fd, LIRC_SET_REC_CARRIER_RANGE, __u32 *frequency)

5.3.12.3. Arguments

fd

File descriptor returned by open().

frequency

Frequency of the carrier that modulates PWM data, in Hz.

5.3.12.4. Description

This ioctl sets the upper range of carrier frequency that will be recognized by the IR receiver.

Note

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.

5.3.12.5. 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.