sdalib.c

Vxworks的培训教程,大家分享下啊,

#include "daLib.h"

IMPORT DAADIO daadio;

STATUS dac (channel, volts)
	int channel;
	double volts;
	{


	/* Error checking */
	if (daadio.initialized == FALSE)
		{
		printf ("Daadio not initialized\n");
		return (ERROR);
		}
	if (channel < 0 || channel > DA_MAX_CHANNELS)
		{
		printf ("Channel number out of range\n");
		return (ERROR);
		}
	if (volts < MIN_VOLTAGE || volts > MAX_VOLTAGE)
		{
		printf ("volts out of range\n");
		return (ERROR);
		}
	
	/* ???????????????????? */

	return (OK);
	}