Maxim-integrated 73M1822/73M1922 Control Module Manual de usuario descargar pdf (Pagina 40)

73M1822/73M1922 Control Module User Guide UG_1x22_053

40 Rev. 1.0

6.3.6 M1X22_ATDP_PARAM

Description

This IOCTL is used to modify or read the following default pulse dial parameters:

• On hook duration (default = 60 ms)

• Off hook duration (default = 40 ms)

• Inter-digit duration (default = 1 sec)

The command field in the M1X22_PULSE_DIAL_PARAM_t structure indicates whether it is a read or a

write operation. For reading the driver returns the parameters in the structure, while for writing the driver

expects the new pulse dial parameters to be written in the structure.

#define M1X22_ATDP_PARAM _IOWR(0xA4,0xAD,unsigned int)

Prototype

int ioctl (

int chan_fd,

int M1X22_ATDP_PARAM,

unsigned long param );

Parameters

Data Type Name Description

int

chan_fd

Channel descriptor.

int

M1X22_ATDP_PARAM

I/O control identifier for this operation.

unsigned long

param

Pointer to the

M1X22_PULSE_DIAL_PARAM_t

structure.

Return Values

Data Type Description

int

Always returns 0.

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Maxim-integrated 73M1822/73M1922 Control Module Manual de usuario Pagina 40