uart.c

合众达SEED-DTK2812 光盘内容 DSP源码 用户指南 实验手册

/******************************************************************************/
/*  Copyright 2004 by SEED Electronic Technology LTD.                         */
/*  All rights reserved. SEED Electronic Technology LTD.                      */
/*  Restricted rights to use, duplicate or disclose this code are             */
/*  granted through contract.                                                 */
/*  MODULE NAME... DARAM on board											  */
/*  FILENAME...... DEC5416_SRAM.c											  */
/*  PROJECT....... Read and write on-board daram memory of TMS320VC5502	      */
/*  作者: gao		                                                          */
/*  版本:1.0                                                                  */
/*  日期:06.11.10                                                             */
/******************************************************************************/

#include "DSP28_Device.h"

#define UART_INT	1

unsigned int uart_sendtype ;
unsigned int Sci_VarRx[100];
unsigned int i,j;
unsigned int Send_Flag;

void main(void)
{

	/*初始化系统*/
	InitSysCtrl();

	/*关中断*/
	DINT;
	IER = 0x0000;
	IFR = 0x0000;

	/*初始化PIE中断*/
	InitPieCtrl();

	/*初始化PIE中断矢量表*/
	InitPieVectTable();	
	
	/*初始化SCIA寄存器*/
    InitSci();
    for(i = 0; i < 100; i++)
    {
    	Sci_VarRx[i] = 0;
    }
    i = 0;
    j = 0;
    Send_Flag = 0;
    
    #if UART_INT
	/*设置中断服务程序入口地址*/
	EALLOW;	// This is needed to write to EALLOW protected registers
	PieVectTable.TXAINT = &SCITXINTA_ISR;
	PieVectTable.RXAINT = &SCIRXINTA_ISR;
	EDIS;   // This is needed to disable write to EALLOW protected registers

	/*开中断*/
	IER |= M_INT9;
	#endif
	EINT;   // Enable Global interrupt INTM
	ERTM;	// Enable Global realtime interrupt DBGM

	for(;;)
	{
		if((SciaTx_Ready() == 1) && (Send_Flag == 1))
		{
			SciaRegs.SCITXBUF = Sci_VarRx[i];
			Send_Flag = 0;
			i++;
			if(i == j)
			{
				i = 0;
				j = 0;
			}
		}

		
		#if !UART_INT
		if(SciaRx_Ready() == 1)
		{
			Sci_VarRx[j] = SciaRegs.SCIRXBUF.all;
			Send_Flag = 1;
			j++;
			if(j == 100)
			{
				j = 0;
			}
		}
		#endif
	}

} 	


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