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B: gpio p, Ppendix, Rogramming – NEXCOM NEX 880 User Manual

Page 58: Ample

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NEX 880/890 User Manual

Appendix B: GPIO Programming Sample Code

A

ppendix

B: GpiO p

rOGrAmminG

S

Ample

C

Ode

GPIO Programming Sample Code

#define GPIO_PORT

0x50F

#define GPO1

(1<<3)

#define GPO2

(1<<4)

void main(void)
{
#Set GPO to be low

outportb(GPIO_PORT, (inportb(GPIO_PORT) & (~GPO1) & (~GPO2) ));

# Set GPO to be high

outportb(GPIO_PORT, (inportb(GPIO_PORT) | GPO1 |GPO2 ));

}

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