uarttest.c

异步串行口编程

/*
 *  Copyright 2005 by SEED.
 *  All rights reserved. Property of SEED.
 *  Restricted rights to use, duplicate or disclose this code are
 *  granted through contract.
 *  
 */
/*
 *  ======== uarttest.c ========
 */

#include <std.h>

#include <log.h>
#include <gio.h>
#include <iom.h>

#ifdef _6x_
extern far LOG_Obj trace;
#else
extern LOG_Obj trace;
#endif
 
Char        buf[32] = "Hello World ";
Char        buf1[32] = "Hello World ";

/*
 *  ======== main ========
 */
Void main()
{
    LOG_printf(&trace, "UART Test started!");
}

/*
 *  ======== echo =========
 */   
Void echo()
{
    GIO_Handle  inChan, outChan;

    Uns         size = 16;
    Int         status;

    inChan = GIO_create("/uart", IOM_INPUT, NULL, NULL, NULL);
    outChan = GIO_create("/uart", IOM_OUTPUT, NULL, NULL, NULL);

    if (inChan == NULL || outChan == NULL) {
        LOG_printf(&trace, "GIO_create failed");
        SYS_abort("GIO_create");
    }

    for (;;) 
    {
		
        status = GIO_read(inChan, buf, &size);

        if (status < 0) 
        {
            LOG_printf(&trace, "GIO_write error");
            SYS_abort("GIO_read");
        }
//        for(;;){}
//        for(;;)
//    	{
        	status = GIO_write(outChan, buf, &size);
	
        	if (status < 0) 
        	{
            	LOG_printf(&trace, "GIO_write error");
            	SYS_abort("GIO_write");
        	}
//     	}
    }
}
Void e1()
{
    GIO_Handle  inChan1, outChan1;
    Uns         size = 16;
    Int         status;
    
    inChan1 = GIO_create("/uart1", IOM_INPUT, NULL, NULL, NULL);
    outChan1 = GIO_create("/uart1", IOM_OUTPUT, NULL, NULL, NULL);
    
    if (inChan1 == NULL || outChan1 == NULL) 
    {
        LOG_printf(&trace, "GIO_create failed");
        SYS_abort("GIO_create");
    }

    for (;;) 
    {
		
        status = GIO_read(inChan1, buf1, &size);

        if (status < 0) 
        {
            LOG_printf(&trace, "GIO_write error");
            SYS_abort("GIO_read");
        }
//        for(;;){}
//        for(;;)
//    	{
        	status = GIO_write(outChan1, buf1, &size);
	
        	if (status < 0) 
        	{
            	LOG_printf(&trace, "GIO_write error");
            	SYS_abort("GIO_write");
        	}
//     	}
    }
}