用户手册-开发板10、ps2键盘

PS2键PS2键盘是非常常用一中输入设备，广泛运用于大型电子设备中。在小型设备中PS2键盘也被广泛的使用，这个程序就是一个PS2的键盘程序，把PS2的按键码转换成相应的ASCII码。*#include<intrinsics.h>#include<stdio.h>#include<iolpc2103.h>#include"KU.h"//OSC#define //Coreclk#define //Perclk#define //Timertickper#defineTICK_PER_SEC #defineTIM_PER_S(Val)(PCCLK/Val)#defineMAX_TICK_PER #defineMIN_TICK_PER //TimerDeltaperiod#define #define #defineFosc#define (FOSC* (1~32)，且#defineFcco (Fcclk*4) 16倍，范围为156MHz~320MHz#defineFpclk (Fcclk/4)*1 4倍#define #define #define #define #defineKey_Data #define #defineU8unsignedchar#defineU16unsignedshort#defineU32unsignedintstaticU8Key_UP=0,BF=staticU8KeyV=0; //接收键盘数据变量通码变量接受连续通码变量staticU8IntNum=0;//中数次数中断控制变量缓冲区数组缓冲区指针staticU8key=0; staticU8voiddelay(U32{while(--} voidUART0_Init(){U16U0LCR=0x83; //DLAB=1，可设置波特率Fdiv=(Fpclk/16)/UART_BPS; //设置波特率U0DLM=Fdiv/256;U0DLL=Fdiv%256;U0LCR=0x03;} voidUART0_PutChar(U32data){U0THR // //} UART0_PutString(char*str){{}}FunctionName:Parameters:Return:#pragma armvoidirq_handler{unsignedintvector;vector=VICVectAddr; //Gerrupt_function=(void(*)())vector;if(interrupt_function!=NULL){ //Callvectoredinterrupt}{ //Clearinterruptin}}FunctionName:Parameters:Return:Description:KeySPEEDinterruptvoidKey2IntHandler{//clearinterruptflagEXTINT=1;if((IOSET&LED1CON)==IOSET IOCLR= if((IntNum>0)&&(IntNum<9)){KeyV=KeyV>>1; ) }while //PS/2CLK{IntNum BF=1; Decode()则所Decode中所调用的所有函数要为再入函数} }FunctionName:Parameters:Return:Description:InitvoidKeysInit{//SettoEXTInterruptPINSEL1_bit.P0_16=1;//SerruptedgetosensitivemodeEXTMODE=0x5;//FallingEdgeEXTPOLAR=0;//Set//AssigntoIRQ//SetVICVectAddr0=(unsignedint)Key2IntHandler;tl0_bit.NUMBER=VIC_EINT0;tl0_bit.ENABLED=1;EXTINT=0x5;//Enableinterrupts}void{/**/PLLCON=1;#if((Fcclk/4)/Fpclk)==APBDIV=#if((Fcclk/4)/Fpclk)==VPBDIV=#if((Fcclk/4)/Fpclk)==VPBDIV=#if(Fcco/Fcclk)==PLLCFG=((Fcclk/Fosc)-1)|(0<<#if(Fcco/Fcclk)==PLLCFG=((Fcclk/Fosc)-1)|(1<<#if(Fcco/Fcclk)==PLLCFG=((Fcclk/Fosc)-1)|(2<<#if(Fcco/Fcclk)==PLLCFG=((Fcclk/Fosc)-1)|(3<<PLLFEED=0xaa;PLLFEED=PLLCON=3;PLLFEED=0xaa;PLLFEED=//Memorymapinitflashmemoryismapedon0address#ifdefFLASH}void{//InitPINSEL0=PINSEL1=PINSEL0 ////DisablefastIO//SetpinsconnecttoLEDsasoutputsIODIR=LED1CON;//AllLEDsoff}voidDecode(unsignedcharScanCode注意:如SHIFT+G为12H34HF0H34HF0H12H，也就是说shift的通码+G的通码+shift的断码+G的断码{U8KeyV BF=if //当键盘{switch{case //0xF0，Key_UP1Key_UP=1;case0x12: //SHIFTShift=1;case0x59: //SHIFTShift=1; { key=} {key=}}}{Key_UP=switchScanCodeG34HF0H34