/**************************************************************************

	switchchar.c
 	Z-World, 2002
 	
	This program is used with BL2500 series controllers and demo boards.
	
	Description
	===========
  	This program transmits and then receives an ASCII string on serial 
	ports E and F. It also displays the serial data received from both
	ports in STDIO window.

	Board Connections
  	=======================
   Place wire jumpers on RS232 connector:
   
     	   TXE <---> RXF 
         RXE <---> TXF

                  
	Demo Board Connections
  	=======================
	Make the following connections:
			
	Controller		Demo Board
	----------		----------
						Jumper H2 pins 3-5						
						Jumper H2 pins 4-6						
			IN00 <->	SW1
			IN01 <->	SW2
	 J11 pin 9 <-> GND
	  J7 pin 3 <-> +K (not to exceed 18V)

	  
  	Instructions
   ============
   1. Compile and Run this program.
   2. Press and release SW1 and SW2 on the proto-board.
	3. View data sent between serial ports in the STDIO window.
	  
**************************************************************************/

#define IN00 0
#define IN01 1
#define DS3 2			//controller led
#define DS4 3			//controller led
#define ON	0
#define OFF 1

// The input and output buffers sizes are defined here. If these
// are not defined to be (2^n)-1, where n = 1...15, or they are
// not defined at all, they will default to 31 and a compiler
// warning will be displayed.

#define EINBUFSIZE 	255
#define EOUTBUFSIZE 	255

#define FINBUFSIZE 	255
#define FOUTBUFSIZE  255

nodebug
void msDelay(unsigned int delay)
{
	auto unsigned long done_time;
	
	done_time = MS_TIMER + delay;
   while( (long) (MS_TIMER - done_time) < 0 );
} 

///////////////////////////////////////////////////////////////////////////
main()
{
	auto int i, ch;
	auto char buffer[64];	//buffer used for serial data
	auto int sw1, sw2, led1, led2;
	
	const char string1[] = {"This message has been Rcv'd from serial port F !!!\n\n\r"};
	const char string2[] = {"This message has been Rcv'd from serial port E !!!\n\n\r"};

	//---------------------------------------------------------------------
	//	Initialize the controller
	//---------------------------------------------------------------------
	brdInit();							//initialize board for this demo

	led1=led2=1;						//initialize led to off value 
	sw1=sw2=0;							//initialize switch to false value 
	
	// Initialize serial port F, set baud rate to 19200
 	serFopen(19200);
	serFwrFlush();
 	serFrdFlush();

  	// Initialize serial port E, set baud rate to 19200
   serEopen(19200);
   serEwrFlush();
   serErdFlush();   
  
	// Clear data buffer
   memset(buffer, 0x00, sizeof(buffer));
   
   printf("\nStart of Sample Program!!!\n\n\n\r");
   //---------------------------------------------------------------------
   // Do continuous loop transmitting data between serial ports E and F	
   //---------------------------------------------------------------------
   for(;;)
   {
		costate
		{	
			if (digIn(IN00))					//wait for switch S1 press
				abort;
			waitfor(DelayMs(50));			//switch press detected if got to here
			if (digIn(IN00))					//wait for switch release
			{
				sw1=!sw1;						//set valid switch
				abort;
			}
		}

		costate
		{	
			if (digIn(IN01))					//wait for switch S2 press
				abort;
			waitfor(DelayMs(50));			//switch press detected if got to here
			if (digIn(IN01))					//wait for switch release
			{
				sw2=!sw2;						//set valid switch
				abort;
			}
		}
		
		costate
		{	// toggle DS3 upon valid S2 press/release
			if (sw1)
			{
				ledOut(DS3, ON);   		//turn on DS3 led
				sw1=!sw1;
				
   			// Transmit an ascii string from serial port E to serial port F
				memcpy(buffer, string2, strlen(string2));
   			serEputs(buffer);
				memset(buffer, 0x00, sizeof(buffer));
		
   			// Get the data string that was transmitted by port E
		    	i = 0;
		     	while((ch = serFgetc()) != '\r')
     			{
		     		// Copy only valid RCV'd characters to the buffer
					if(ch != -1)
					{
						buffer[i++] = ch;
					}
				}
				buffer[i++] = ch;			 //copy '\r' to the data buffer
     			buffer[i]   = '\0';      //terminate the ascii string

		     	// Display ascii string received from serial port E
     			printf("%s", buffer);

		  		// Clear buffer
				memset(buffer, 0x00, sizeof(buffer));
				ledOut(DS3, OFF);		//turn off DS3
			}
		}
		
		costate
		{	// toggle DS4 upon valid S3 press/release
			if (sw2)
			{
				ledOut(DS4, ON);		//turn on DS4 led
				sw2=!sw2;

		   	// Transmit an ascii string from serial port F to serial port E
				memcpy(buffer, string1, strlen(string1));
     			serFputs(buffer);
		     	memset(buffer, 0x00, sizeof(buffer));

				// Get the data string that was transmitted by serial port F
     			i = 0;
		     	while((ch = serEgetc()) != '\r')
     			{
					// Copy only valid RCV'd characters to the buffer
					if(ch != -1)
					{
						buffer[i++] = ch;	
					}
				}
		     	buffer[i++] = ch; 		//copy '\r' to the data buffer
		     	buffer[i]   = '\0';     //terminate the ascii string

	     		// Display ascii string received from serial port F
		   	printf("%s", buffer);
				ledOut(DS4, OFF);		//turn off DS4
			} //endif
		} //endcostate
	} //end for
}
///////////////////////////////////////////////////////////////////////////
