spi_test.c

在ccs调试通过的,TI公司TMS320C2812 dsp的测试程序：gpio

#include "DSP28_Device.h"
unsigned int Spi_VarRx[100];
unsigned int i,j;
//interrupt void ISRSciaTx(void);
//interrupt void ISRSciaRx(void);

void main(void)
{
	/*初始化系统*/
	InitSysCtrl();
	/* 关中断 */
	DINT;
	IER = 0x0000;
	IFR = 0x0000;
	/* 初始化PIE控制寄存器 */
	InitPieCtrl();
	/* 初始化PIE参数表 */
	InitPieVectTable();	
	/* 初始化外设寄存器 */
	InitPeripherals();
//    	init_spi();
    	for(i = 0; i < 100; i++)
    	{
    		Spi_VarRx[i] = 0;
    	}
    	i = 0;
    	j = 0;
    #if	Spi_Int
	EALLOW;	// This is needed to write to EALLOW protected registers
	PieVectTable.SPITXINTA = &SPITXINTA_ISR;
	PieVectTable.SPIRXINTA = &SPIRXINTA_ISR;
	EDIS;   // This is needed to disable write to EALLOW protected registers
	
	/* 设置IER寄存器 */
	IER |= M_INT6;
	#endif
	
	/* 开中断 */
	EINT;   // Enable Global interrupt INTM
	ERTM;	// Enable Global realtime interrupt DBGM

	for(;;)
	{
		if(Spi_TxReady() == 1)
		{
			SpiaRegs.SPITXBUF = i;
			i++;
			if(i == 100)
			{
				i = 0;
			}
		}
		
		#if	!Spi_Int
		if(Spi_RxReady() == 1)
		{
			Spi_VarRx[j] = SpiaRegs.SPIRXBUF;
			j++;
			if(j == 100)
			{
				j = 0;
			}
		}
		#endif
	}

} 	


/*
interrupt void ISRSciaTx(void)
{
	PieCtrl.PIEACK.bit.ACK6 = 1;	
	EINT;
}

interrupt void ISRSciaRx(void)
{
	PieCtrl.PIEACK.bit.ACK6 = 1;
	if(Spi_RxReady() == 1)
	{
		Spi_VarRx[j] = SpiaRegs.SPIRXBUF;
		j++;
		if(j == 100)
		{
			j = 0;
		}
	}
	EINT;
}
*/
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// No more.
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