(Page 4 of 7 in this chapter)
4.3 Sending a Pattern
- swiSendPattern allows you to send a fixed eight-bit pattern out of an output terminus of the switch block.
- For example, to provide battery to the operator stations on an S-Connect board, you would send the pattern SWI_A_BIT_ON to the operator stations on local bus stream 3.
- Figure 8 illustrates the state of the switch block before the pattern is sent.
Figure 8. MVIP Switches Before the Pattern is Sent
- The following code shows how to provide battery to the operator stations on an
S-Connect board by sending the pattern SWI_A_BIT_ON to the operator stations on local bus stream 3:
/* Provide battery to the S-Connect operator stations */
void mySendOffhook(SWIHD cxhd)
{
SWI_TERMINUS outputs[24];
BYTE patterns[24];
unsigned count;
/* SendPattern out to operator interfaces via local:3:timeslot */
for (count = 0; count < 24; count++)
{
outputs[count].bus = MVIP95_LOCAL_BUS;
outputs[count].stream = 3;
outputs[count].timeslot = (DWORD)count;
patterns[count] = SWI_A_BIT_ON;
}
swiSendPattern(cxhd, patterns, outputs, count);
}
- Figure 9 illustrates the state of the switch block after the pattern is sent:
Figure 9. MVIP Switches After the Pattern is Sent
- The demonstration program prt2prt demonstrates sending patterns. Refer to Section 10.3, Port to Port Program: prt2prt.
(Page 4 of 7 in this chapter)
tech_support@nmss.com
Copyright © 1997, Natural MicroSystems, Inc. All rights
reserved.