Omega Engineering OME-PIO-D96 manual Interrupt Polarity Control Register, INV3 INV2 INV1 INV0

3.3.6Interrupt Polarity Control Register

(Read/Write): wBase+0x2A

Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
0	0	0	0	INV3	INV2	INV1	INV0

Note. Refer to Sec. 3.1 for more information about wBase.

INV0=1Æ select the non-inverted signal from P2C0

INV0=0Æ select the inverted signal from P2C0

outportb(wBase+0x2a,0x0f);	/* select the non-inverted input P2/5/8/11C0	*/
outportb(wBase+0x2a,0x00);	/* select the inverted input of P2/5/8/11C0	*/
outportb(wBase+0x2a,0x0e); /* select the inverted input of P2C0		*/
	/* select the non-inverted input P5/8/11C0	*/
outportb(wBase+0x2a,0x0c); /* select the inverted input of P2/5C0		*/
	/* select the non-inverted input P8/11C0	*/

Refer to Sec. 2.5 for more information.

Refer to DEMO5.C for more information.

OME-PIO-D96 User Manual (Ver.1.1, Mar/2003) ---- 33