com.c

adios在windows的实现

/*******************************
 * AdiOS Com Port Example      *
 * For use with an echo device *
 * com.c                       *
 * 21-10-2001                  *
 *******************************/

// Entry point and kernel API defined here
#include "..\kernapi.h"

void * appmain(__int32 param)
{
	long x;				// Data written/read count
	unsigned char C;	// The character we will output
	char InBuf[2];		// Input buffer

	C = 64;				// Set the character ready to be incremented

	// Print the name of the program
	PrintCR("Com port echo example.");

	// I like my infinite loops :)
	while(1){
		// Increment the letter, and if it is beyond Z, set it back to A
		if (++C == 91) C = 65;

		// Write the letter to the com port
		x = WriteCom(&C, 1);
		if (x == 1){
			// If it was written ok, read it back
			x = ReadCom(InBuf, 1);
			if(x == 1){
				// If data was read ok, fix the string with a null zero
				InBuf[1] = 0;
				// Print it to the console
				Print(InBuf);
				//WriteCom(InBuf, 1);
			} else Print("_");
		} else Print(" ");
	}

	return 0; // Just to keep the compiler happy
}