Unsolicited Events

• DTEV_CASTEVT
• DTEV_CASSENDENDEVT

DTEV_CASTEVT

This event type is sent for all unsolicited CAS DTI messages sent to the application. The sr_getevtdatap( ) function must be used to return a pointer to the associated DTCAS_DETECTED_MSG message block. The typedef for the DTCAS_DETECTED_MSG structure is as follows:

typedef struct  t_detected_msg {  
       unsigned char       msg_code;  
       unsigned char       flags;  
       unsigned short      template_id;  
       unsigned short      result;  
       unsigned short      count;  
       unsigned int        timestamp;


} DTCAS_DETECTED_MSG;

Parameter	Description
msg_code	identifies the message type and must be set to NTT_CAS_TEMPLATE_MATCH
flags	is reserved and must be set to zero for future compatibility
template_id	identifies the template detected
count	identifies the number of pulse detected
timestamp	identifies the time of occurrence of this event, and it is a value of the VTRX system clock; each tick represents 1 millisecond, and the granularity of the timestamp is 10; since this is VTRX system clock, this could be used by the application as a relative time

DTEV_CASSENDENDEVT

This event type is sent to the application after an application initiated signal pattern transmission is complete. The sr_getevtdatap( ) function must be used to return a pointer to the associated DTCAS_END_TRANSMIT_MSG message block. The typedef for the DTCAS_END_TRANSMIT_MSG structure is as follows:

typedef struct  t_detected_msg {  
       unsigned char       msg_code;  
       unsigned char       rfu;  
       unsigned short      template_id;  
       unsigned short      pulse_count;  
       unsigned short      sequence_count;  
       unsigned int        timestamp;


} DTCAS_DETECTED_MSG;

Parameter	Description
msg_code	identifies the message type and must be set to NTT_CAS_TEMPLATE_SEND_END
rfu	is reserved and must be set to zero for future compatibility
template_id	identifies the template detected
pulse_count	identifies the number of pulse detected
sequence_count	is reserved for future use and should be ignored by the application
timestamp	identifies the time of occurrence of this event, and it is a value of the VTRX system clock; each tick represents 1 millisecond, and the granularity of the timestamp is 10; since this is VTRX system clock, this could be used by the application as a relative time

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