key.c

来自「基于tms320c5509下的key和lcd编程」· C语言 代码 · 共 55 行

#include "myapp.h"
#include "ICETEK-VC5509-EDU.h"
#include "scancode.h"

int nCursorCount;

main()
{
	
	int dbScanCode,tKey,cKey,nKeyCode,nCount;

	CLK_init();
	SDRAM_init();
	for ( nCount=0;nCount<8;nCount++ )
	{
		ledbuf[nCount]=0x0ff;		// 显示为空白
		ledx[nCount]=(nCount<<4);	// 生成显示列控制字
	}
	InitCTR();
	
    CTRLR=0x0c1;	// 打开发光二极管阵列

	RefreshLEDArray();

	for (;;)
	{
		dbScanCode=GetKey();
		dbScanCode&=0x0ff;
		if ( dbScanCode!=0 && dbScanCode!=0x0ff )
		{
			if( dbScanCode==SCANCODE_Enter)
			{
				tKey=CTRCLKEY;
				break;
			}
			else
			{
				cKey=ConvertScanToChar(dbScanCode);
				if ( cKey!=0 && cKey>='0' && cKey<='9' )
				{
					nKeyCode=cKey-'0';
					SetLEDArray(nKeyCode);
				}
			}
		}
		Delay1(16);
		nCursorCount++; nCursorCount%=4;
		if ( nCursorCount==0 )	ledbuf[7]^=0x80;
		
	}
	CloseCTR();
	exit(0);
}