求大神幫助，關(guān)于單片機(jī)驅(qū)動(dòng)ps/2鍵盤(pán)

ID:99049 · 發(fā)表于 2016-6-18 21:30

為什么會(huì)有幾個(gè)鍵讀出的值一樣？

ID:1 · 發(fā)表于 2016-6-18 22:02

肯定是程序的問(wèn)題看看你的程序

ID:99049 · 發(fā)表于 2016-6-19 08:57

admin 發(fā)表于 2016-6-18 22:02
肯定是程序的問(wèn)題看看你的程序

/*
* GccApplication1.c
*
* Created: 2016/6/17 19:31:04
* Author: lenovo
*/

#include <avr/io.h>
#include <util/delay.h>
#include"12864.h"
#include <avr/interrupt.h>
#define data1 PORTD|=(1<<6)
#define data0 PORTD&=~(1<<6)
#define data_d PIND&(1<<6)
#define SCLK PIND&(1<<2)

#define uchar unsigned char
#define uint unsigned int
uint num=0,zhi;
uchar keyv=0,BF=0,key_up=0;

void keyscan()//把讀到的數(shù)據(jù)轉(zhuǎn)化成整型，用12864顯示
{

zhi=(uint)(keyv);
send_cmd(0x90);
send_data(0x30+zhi/100);
send_data(0x30+zhi%100/10);
send_data(0x30+zhi%10);

BF=0;
}

int main(void)
{
DDRD&=~(1<<2);
DDRB|=(1<<0)|(1<<1);
DDRD&=~(1<<6);
MCUCR|=(1<<ISC00);
GICR|=(1<<INT0);
sei();
init_12864();
//send_cmd(0x80);
//send_data(0x32);
while(1)
{
if(BF)
keyscan();
else
sei();

}
}

SIGNAL(SIG_INTERRUPT0)
{

if(num>0&&num<9)
{

keyv=keyv>>1;

if(data_d)
{
keyv|=0x80;
}
}
num++;
while(!SCLK);
if(num>10)
{
num=0;
BF=1;
cli();
}
}

ID:123289 · 發(fā)表于 2016-6-19 09:41

畫(huà)個(gè)流程圖看看,畫(huà)好了,也許就自解了.
畫(huà)細(xì)一點(diǎn).

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求大神幫助，關(guān)于單片機(jī)驅(qū)動(dòng)ps/2鍵盤(pán)

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