| .. -*- coding: utf-8; mode: rst -*- | |
| .. _lirc_set_send_duty_cycle: | |
| ****************************** | |
| ioctl LIRC_SET_SEND_DUTY_CYCLE | |
| ****************************** | |
| Name | |
| ==== | |
| LIRC_SET_SEND_DUTY_CYCLE - Set the duty cycle of the carrier signal for | |
| IR transmit. | |
| Synopsis | |
| ======== | |
| .. c:function:: int ioctl( int fd, LIRC_SET_SEND_DUTY_CYCLE, __u32 *duty_cycle) | |
| :name: LIRC_SET_SEND_DUTY_CYCLE | |
| Arguments | |
| ========= | |
| ``fd`` | |
| File descriptor returned by open(). | |
| ``duty_cycle`` | |
| Duty cicle, describing the pulse width in percent (from 1 to 99) of | |
| the total cycle. Values 0 and 100 are reserved. | |
| Description | |
| =========== | |
| Get/set the duty cycle of the carrier signal for IR transmit. | |
| Currently, no special meaning is defined for 0 or 100, but this | |
| could be used to switch off carrier generation in the future, so | |
| these values should be reserved. | |
| 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 <gen-errors>` chapter. |