Maxim Integrated 73M1866B/73M1966B Infineon TAPI High-Level Driver - Manual (Page 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.