dsp281x_sci.c

来自「一个28系列dsp应用的程序,包括adc,cpu_timer,pwm,gpio,」· C语言 代码 · 共 57 行

//###########################################################################
//
// FILE:	DSP281x_Sci.c
//
// TITLE:	DSP281x SCI Initialization & Support Functions.
//
//###########################################################################
//
//  Ver | dd mmm yyyy | Who  | Description of changes
// =====|=============|======|===============================================
//  1.00| 11 Sep 2003 | L.H. | No change since previous version (v.58 Alpha)
//###########################################################################

#include "DSP281x_Device.h"     // DSP281x Headerfile Include File
#include "DSP281x_Examples.h"   // DSP281x Examples Include File

//---------------------------------------------------------------------------
// InitSPI: 
//---------------------------------------------------------------------------
// This function initializes the SPI(s) to a known state.
//
void InitSci(void)
{
		// Initialize SCI-A:
	SciaRegs.SCICCR.all = 0x07;   //1 stop bit,no parity,unenable parity,8bit
	
	SciaRegs.SCICTL1.all = 0x03;  //enable txd and rxd
	SciaRegs.SCICTL2.all = 0x02;  //enable txd and rxd intrrupt
	
	SciaRegs.SCIHBAUD = 0x00;     //baudrate38400
	SciaRegs.SCILBAUD = 0x79;
	

	
	SciaRegs.SCIFFTX.all=0xC000;
    SciaRegs.SCIFFCT.all=0x0010;
    
 	SciaRegs.SCICTL1.all = 0x23;   //enable scia   
    
    SciaRegs.SCIFFTX.bit.TXFIFOXRESET=1;

    
	PieCtrlRegs.PIEIER9.bit.INTx1 = 1;  //enable rxd intrrupt
	PieCtrlRegs.PIEIER9.bit.INTx2 = 0;  //unable txd intrrupt

	//tbd...
 	

	// Initialize SCI-B:

	//tbd...
}	
	
//===========================================================================
// No more.
//===========================================================================