#include
void IRQ_Handler(void) __irq;			//	IRQ Funtion Prototype 
char i;	
char received_data[30];


int main(void) {

	GP4DAT = 0x04000000;			// P4.2 configured as an output. LED is turned on	
	IRQEN = SPI_SLAVE_BIT;

	GP1CON = 0x22220000;				// configure SPI on SPM
	SPICON = 0x1409;					// enable SPI slave mode
	
while (1) {

	}			
}


/********************************************************************/
/*                                                                  */
/*		Interrupt Service Rountine									*/
/*                                                                  */
/********************************************************************/

void IRQ_Handler() __irq {
	GP4DAT ^= 0x00040000;		// Complement P4.2
	if ((IRQSTA & SPI_SLAVE_BIT) != 0) {
		received_data[i] = SPIRX;
		i++;
		SPITX = i;
		if (i==30) i=0;
	}
	return ;
}