Maxim-integrated 73M1866B/73M1966B Infineon TAPI High-Level Driver Uživatelský manuál stáhnout pdf (Strana 23)

UG_1x66B_021 73M1866B/73M1966B TAPI High-Level Driver User Guide

Rev. 2.2 23

3.20 IFX_TAPI_FXO_POLARITY_ GET

Description

Receives line polarity status from the FXO interface.

#define IFX_TAPI_FXO_POLARITY_GET _IOW(IFX_TAPI_IOC_MAGIC, 0xE1, int)

Prototype

int ioctl (

int chan_fd,

int IFX_TAPI_FXO_POLARITY_GET,

unsigned long param );

Parameters

Data Type Name Description

int

chan_fd

Channel descriptor.

int

IFX_TAPI_FXO_POLARITY_GET

I/O control identifier for this operation.

unsigned long

param

Points to IFX_boolean_t type,

• IFX_TRUE reflects normal polarity,

• IFX_FALSE reflects reversed polarity

Return Values

Data Type Description

int

IFX_ERROR – Failed to read polarity status.

IFX_SUCCESS – Successful.

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Maxim-integrated 73M1866B/73M1966B Infineon TAPI High-Level Driver Uživatelský manuál Strana 23