Maxim-integrated 73M1866B/73M1966B Reference Driver Manuel d'utilisateur télécharger pdf (Page 46)

73M1866B/73M1966B Reference Driver User Guide UG_1x66B_015

46 Rev. 2.7

6.3.2 M1966_ATH1

Description

Issues the off-hook signal to the FXO interface.

#define M1966_ATH1 _IOWR(0xA4,0xA2,unsigned int)

Note: The driver provides an option to generate a battery status event upon completion of this off-hook

procedure. This option is controlled by the following macro defined in the drv_config_user.h header

file. By default this macro is disabled:

#define SEND_BAT_STATUS_OFFHOOK

It is envisioned that the application layer will use this event to determine if the call establishment should

be proceeded.

Prototype

int ioctl (

int chan_fd,

int M1966_ATH1,

unsigned long param );

Parameters

Data Type Name Description

int

chan_fd

Channel descriptor.

int

M1966_ATH1

I/O control identifier for this operation.

unsigned long

param

N/A.

Return Values

Data Type Description

int

Always returns 0.

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Maxim-integrated 73M1866B/73M1966B Reference Driver Manuel d'utilisateur Page 46