/*
********************************************************************************
SIEMENS C511/C513 STARTER KIT
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PROGRAM 	ssc1_sl
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MODUL NAME	ssc1_sl.c
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DESCRIPTION	This program is an example for a SSC application, running
		on a C511/C513 microcontroller. The controller is configured
		to run in slave mode.
		The controller uses the first byte, received via SSC as a
		multiplier. The following bytes, received via SSC, are
		multiplied with this factor and sent back to the SSC master.
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FUNCTIONS	void main(void) ;
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NOTE		No precautions are implemented for data range overflow.
		No handshake between SSC master and SSC slave is implemented.
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ENVIRONMENT	The program runs on the C511/C513 Starter Kit board miniCON-513.
		The program is dedicated for the SAB-C513A-H microcontroller
		in socket U5. The program can be programmed into its E2PROM
		with prg51x.exe programming monitor.
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VERSION 	V1.0
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COMPILER	Keil PK51 Eval V5.02
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SEE ALSO	ssc1_ma.c
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DATE		16/10/95
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MODIFICATIONS	none
********************************************************************************
*/

/***********************    Compiler Includes	 ******************************/
#include <reg51.h>
/***********************    C513 SFR Includes	 ******************************/
#include "sfr_c513.h"
/***********************    miniCON-513 Includes ******************************/
#include "board513.h"
/***********************    Prototypes		 ******************************/
void main (void);

/***********************    Program Code	 ******************************/

void main(void) {
	int	ssc_receive;
	int	mul_factor;

	/* SSC configuration:
	   SCEN = 1:	SSC subsystem enabled
	   TEN	= 1:	full duplex mode enabled
	   MSTR = 0:	slave mode selected
	   CPOL = 1:	SCLK idle state is high
	   CPHA = 1:	first data bit is shifted  out with first SCLK edge
			and sampled with the second clock edge
	   BRS2-BRS0:	divide factor is set to 8; baudrate = 1.5 MBaud
	*/
	SSCCON	  = 0xD9;

	while (!TC);	      /* wait for completion of first SSC transfer */
	mul_factor = SRB;     /* first SSC receive value is multiplier */
	ssc_receive = 1;      /* initialize ssc_receive to 1, so multiplier
				 is sent back to the SSC master */

	/* endless loop : receive multiplicand via SSC, execute multiplication
	send back result  */

	while (1) {
		STB = ssc_receive * mul_factor;
		while (!TC);
		ssc_receive = SRB;
	}

}