Manual Inspecta Software

2.4.6.2 mvfg_IntSource (), mfg_IntSource ()
Synopsis: void mvfg_IntSource ( DWORD irqsource );
Software
Description: ‘mvfg_IntSource()’ defines the source of an interrupt. Use this function in
conjunction with mvfg_IntCallback () to define, how often the user supplied
programme should be called.
Returns: --
The parameter irqsource is the same as in function mvfg_isr (). Bits 10-12
define the source of an interrupt.
‘irqsource’ can have the following values:
Bits: 0..7 = 0
Bits: 8..9 = 0
10 = ISRC0 interrupt source 0
11 = ISRC1 interrupt source 1
12 = ISRC2 interrupt source 1
Bits: 13..32 = 0
irqsource = 0x000 ; hor. freq/128
0x400 ; falling edge of VSYNC analog
0x800 ; start/stop flipflop is set
0xC00 ; falling edge of HSYNC analog
0x1400 ; falling edge of VSYNC digital
0x1C00 ; falling edge of HSYNC digital
Example: Call the application programme with every VSYNC.
// define (VSYNC) as interrupt source.
mvfg_IntSource ( 0x0400 );
// initialize MVFG-Callback function.
mvfg_IntCallback( (DWORD) myCallBackFkt, 0 );
INSPECTA Software Rev. 1.47 Page 56