2.5.9. ioctl FE_DISEQC_SEND_BURST Name

FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection. Synopsis

int ioctl(int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd *tone) Arguments

File descriptor returned by open().
pointer to enum fe_sec_mini_cmd Description

This ioctl is used to set the generation of a 22kHz tone burst for mini DiSEqC satellite selection for 2x1 switches. This call requires read/write permissions.

It provides support for what’s specified at Digital Satellite Equipment Control (DiSEqC) - Simple “ToneBurst” Detection Circuit specification.

enum fe_sec_mini_cmd
ID Description


Sends a mini-DiSEqC 22kHz ‘0’ Tone Burst to select satellite-A


Sends a mini-DiSEqC 22kHz ‘1’ Data Burst to select satellite-B 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.