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- /*
- * V36_Device_Use.c
- *
- * This is an example of using the serial device.
- * First, we will attempt to create a message port with CreateMsgPort()
- * Next, we will attempt to create the I/O request with CreateIORequest()
- * Then, we will attempt to open the serial device with OpenDevice()
- * If successful, we will send the SDCMD_QUERY command to it
- * and reverse our steps.
- * If we encounter an error at any time, we will gracefully exit.
- *
- * Compile with SAS C 5.10 lc -cfistq -v -y -L
- *
- * Requires Kickstart V36 or greater.
- *
- * Run from CLI only
- */
-
- #include <exec/types.h>
- #include <exec/memory.h>
- #include <exec/io.h>
- #include <devices/serial.h>
-
- #include <clib/exec_protos.h>
- #include <clib/alib_protos.h>
-
- #include <stdio.h>
-
- #ifdef LATTICE
- int CXBRK(void) { return(0); } /* Disable SAS CTRL/C handling */
- int chkabort(void) { return(0); } /* really */
- #endif
-
- void main(void)
- {
- struct MsgPort *SerialMP; /* pointer to our message port */
- struct IOExtSer *SerialIO; /* pointer to our I/O request */
-
- /* Create the message port */
- if (SerialMP=CreateMsgPort())
- {
- /* Create the I/O request */
- if (SerialIO = CreateIORequest(SerialMP,sizeof(struct IOExtSer)))
- {
- /* Open the serial device */
- if (OpenDevice(SERIALNAME,0,(struct IORequest *)SerialIO,0L))
-
- /* Inform user that it could not be opened */
- printf("Error: %s did not open\n",SERIALNAME);
- else
- {
- /* device opened, send query command to it */
- SerialIO->IOSer.io_Command = SDCMD_QUERY;
- if (DoIO((struct IORequest *)SerialIO))
-
- /* Inform user that query failed */
- printf("Query failed. Error - %d\n",SerialIO->IOSer.io_Error);
- else
- /* Print serial device status - see include file for meaning */
- printf("\n\tSerial device status: %x\n\n",SerialIO->io_Status);
-
- /* Close the serial device */
- CloseDevice((struct IORequest *)SerialIO);
- }
- /* Delete the I/O request */
- DeleteIORequest(SerialIO);
- }
- else
- /* Inform user that the I/O request could be created */
- printf("Error: Could create I/O request\n");
-
- /* Delete the message port */
- DeleteMsgPort(SerialMP);
- }
- else
- /* Inform user that the message port could not be created */
- printf("Error: Could not create message port\n");
- }
-
-
-