projects / deliverable / linux.git / blame
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|---|---|---|
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1 | .. -*- coding: utf-8; mode: rst -*- |
| 2 | ||
| 3 | .. _lirc_set_wideband_receiver: | |
| 4 | ||
| 5 | ******************************** | |
| 6 | ioctl LIRC_SET_WIDEBAND_RECEIVER | |
| 7 | ******************************** | |
| 8 | ||
| 9 | Name | |
| 10 | ==== | |
| 11 | ||
| 12 | LIRC_SET_WIDEBAND_RECEIVER - enable wide band receiver. | |
| 13 | ||
| 14 | Synopsis | |
| 15 | ======== | |
| 16 | ||
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17 | .. c:function:: int ioctl( int fd, LIRC_SET_WIDEBAND_RECEIVER, __u32 *enable ) |
| 18 | :name: LIRC_SET_WIDEBAND_RECEIVER | |
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19 | |
| 20 | Arguments | |
| 21 | ========= | |
| 22 | ||
| 23 | ``fd`` | |
| 24 | File descriptor returned by open(). | |
| 25 | ||
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26 | ``enable`` |
| 27 | enable = 1 means enable wideband receiver, enable = 0 means disable | |
| 28 | wideband receiver. | |
| 29 | ||
| 30 | ||
| 31 | Description | |
| 32 | =========== | |
| 33 | ||
| 34 | Some receivers are equipped with special wide band receiver which is | |
| 35 | intended to be used to learn output of existing remote. This ioctl | |
| 36 | allows enabling or disabling it. | |
| 37 | ||
| 38 | This might be useful of receivers that have otherwise narrow band receiver | |
| 39 | that prevents them to be used with some remotes. Wide band receiver might | |
| 40 | also be more precise. On the other hand its disadvantage it usually | |
| 41 | reduced range of reception. | |
| 42 | ||
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43 | .. note:: |
| 44 | ||
| 45 | Wide band receiver might be implictly enabled if you enable | |
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46 | carrier reports. In that case it will be disabled as soon as you disable |
| 47 | carrier reports. Trying to disable wide band receiver while carrier | |
| 48 | reports are active will do nothing. | |
| 49 | ||
| 50 | ||
| 51 | Return Value | |
| 52 | ============ | |
| 53 | ||
| 54 | On success 0 is returned, on error -1 and the ``errno`` variable is set | |
| 55 | appropriately. The generic error codes are described at the | |
| 56 | :ref:`Generic Error Codes <gen-errors>` chapter. |