| .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later |
| |
| .. _FE_ENABLE_HIGH_LNB_VOLTAGE: |
| |
| ******************************** |
| ioctl FE_ENABLE_HIGH_LNB_VOLTAGE |
| ******************************** |
| |
| Name |
| ==== |
| |
| FE_ENABLE_HIGH_LNB_VOLTAGE - Select output DC level between normal LNBf voltages or higher LNBf - voltages. |
| |
| |
| Synopsis |
| ======== |
| |
| .. c:function:: int ioctl( int fd, FE_ENABLE_HIGH_LNB_VOLTAGE, unsigned int high ) |
| :name: FE_ENABLE_HIGH_LNB_VOLTAGE |
| |
| |
| Arguments |
| ========= |
| |
| ``fd`` |
| File descriptor returned by :ref:`open() <frontend_f_open>`. |
| |
| ``high`` |
| Valid flags: |
| |
| - 0 - normal 13V and 18V. |
| |
| - >0 - enables slightly higher voltages instead of 13/18V, in order |
| to compensate for long antenna cables. |
| |
| |
| Description |
| =========== |
| |
| Select output DC level between normal LNBf voltages or higher LNBf |
| voltages between 0 (normal) or a value grater than 0 for higher |
| voltages. |
| |
| |
| Return Value |
| ============ |
| |
| On success 0 is returned. |
| |
| On error -1 is returned, and the ``errno`` variable is set |
| appropriately. |
| |
| Generic error codes are described at the |
| :ref:`Generic Error Codes <gen-errors>` chapter. |
