学步园

以下程序是结合我的驱动编写的应用层程序,双击,单击,长按都能正确识别,效果很好,不知有哪位大侠有更好的结构和算法程序?想借此抛砖引玉,也愿高手们修改指正!QQ:26451602.

/*<br /> 读取键值，控制LED灯亮。0x80-0x85:灭1-6号灯。0x00-0x05:点亮1-6号灯。<br /> 键值:1-6.<br /> 修改记录:<br /> 2009-10-26: 依据阿潘要求，改为刚按下/按住/释放都要给应用层信号。<br /> 修改标志:ZMF091026<br /> */</p> <p>#include <unistd.h><br /> #include <stdio.h><br /> #include <stdlib.h><br /> #include <string.h><br /> #include <sys/ioctl.h><br /> #include <sys/types.h><br /> #include <sys/stat.h><br /> #include <fcntl.h><br /> #include <sys/select.h><br /> #include <sys/time.h><br /> #include <errno.h><br /> #include <signal.h><br /> #include <pthread.h></p> <p>#include "sysconfig.h"<br /> #include "powercontrolboard.h"<br /> /* keyflag: bit4:y/n longkey; bit0:y/n quickkey; bit1:quickkey valid; bit5: key valid; */<br /> /* keyflag: bit8-bit11: pressed key num:1-15 */<br /> #define QUICKKEYbit 0<br /> #define QUICKKEYVALbit 1<br /> #define LONGKEYbit 4<br /> #define KEYVALIDbit 5</p> <p> volatile key_reg_t keyregdat;<br /> pthread_t g_LedCheckThreadId;</p> <p>int ledrpm_key_reg(int keyfd){<br /> volatile int ret, key_val,keyflag=keyregdat.key_flag;<br /> ret=read(keyfd, (char *)&key_val,sizeof(key_val));<br /> if (ret<0){<br /> perror("ledrpm_key_reg:read");<br /> goto ERRRT;<br /> }<br /> if(ret==0)<br /> return 0;/* 非阻塞读键盘返回0*/<br /> printf("button%x/n",key_val);<br /> if(key_val < 0x1000){ /* 初始值处理 */<br /> if(key_val==keyregdat.keybuf[0]){<br /> SETBIT(keyflag, QUICKKEYVALbit);<br /> }else{<br /> CLRBIT(keyflag, QUICKKEYVALbit);<br /> keyregdat.press_holdtime=0;<br /> keyregdat.keybuf[1]=keyregdat.keybuf[2]=0;<br /> keyregdat.keybuf[0]=key_val;<br /> }<br /> }else if (key_val >= 0x2000){ /* 保持值处理 */<br /> if(keyregdat.keybuf[0]==key_val-0x2000){<br /> keyregdat.keybuf[1]=key_val;<br /> keyregdat.press_holdtime++;<br /> keyregdat.interval_time=14;<br /> }else goto ERRRT;<br /> }else{ /* 释放值处理 */<br /> if(keyregdat.keybuf[0]==key_val-0x1000){ /*释放值和初始值一样 */<br /> /* 先判断是否是长按键 */<br /> if (keyregdat.press_holdtime>=21){<br /> CLRALLBIT(keyflag);<br /> SETBIT(keyflag, LONGKEYbit);<br /> keyflag &=0xf0ff;<br /> keyflag |= ((keyregdat.keybuf[0]&0x000f)<<8);<br /> memset((char *)&keyregdat, 0, sizeof(key_reg_t));<br /> keyregdat.interval_time=14;<br /> goto RIGHTRT;<br /> }else { /* 不是长按键 */<br /> keyregdat.press_holdtime=0;<br /> if (keyregdat.keybuf[2]==0){ /* 若是第一次按下，则不判断是否是双击键 */<br /> keyregdat.keybuf[2]=key_val;<br /> gettimeofday((struct timeval *)&(keyregdat.tv1), NULL);<br /> keyregdat.interval_time=7;<br /> goto RIGHTRT;<br /> }<br /> }<br /> /*以下判断是否是双击键 */<br /> if(keyregdat.keybuf[2]==key_val){ /* 第二次按下释放值一样 */<br /> gettimeofday((struct timeval *)&(keyregdat.tv2), NULL);<br /> ret=1000000*(keyregdat.tv2.tv_sec-keyregdat.tv1.tv_sec)+<br /> keyregdat.tv2.tv_usec-keyregdat.tv1.tv_usec;<br /> if(ret<1000000 && ret>0 && ISSETBIT(keyflag, QUICKKEYVALbit)){<br /> CLRALLBIT(keyflag);<br /> SETBIT(keyflag, QUICKKEYbit);<br /> keyflag &=0xf0ff;<br /> keyflag |= ((keyregdat.keybuf[0]&0x000f)<<8);<br /> memset((char *)&keyregdat, 0, sizeof(key_reg_t));<br /> keyregdat.interval_time=14;<br /> }else {<br /> CLRALLBIT(keyflag);<br /> memset((char *)&keyregdat, 0, sizeof(key_reg_t));<br /> keyregdat.interval_time=14;<br /> }<br /> }else goto ERRRT;/* 初始键值相同，不同释放值*/<br /> }<br /> else goto ERRRT; /* 释放值和初始值不一样，则错误 */<br /> }<br /> RIGHTRT:<br /> keyregdat.key_flag=keyflag;<br /> return 0;<br /> ERRRT:<br /> CLRALLBIT(keyflag);<br /> memset((char *)&keyregdat, 0, sizeof(key_reg_t));<br /> keyregdat.interval_time=14;<br /> keyregdat.key_flag=keyflag;<br /> return -1;<br /> }<br /> void timer1s1_handler(int signo){<br /> if(keyregdat.interval_time <14){<br /> if(++keyregdat.interval_time>=14){<br /> memset((char *)&keyregdat, 0, sizeof(key_reg_t));<br /> keyregdat.interval_time=14;<br /> printf(" clear keyregdat!!/n");<br /> }<br /> }<br /> }<br /> void init_sigaction(void){<br /> struct sigaction act;<br /> act.sa_handler=timer1s1_handler;<br /> act.sa_flags=0; //SA_ONESHOT|SA_NOMASK; /* 只能等于0,否则如后面结果是定时到一次就退出 */<br /> sigemptyset(&act.sa_mask);<br /> if(sigaction(SIGPROF, &act, NULL)==-1)<br /> perror("signaction");<br /> }<br /> void init_time(void){<br /> struct itimerval value;<br /> value.it_value.tv_sec=0;<br /> value.it_value.tv_usec=200000; /* 定时时间改小一点,这样平均误差小一点 */<br /> value.it_interval=value.it_value;<br /> setitimer(ITIMER_PROF, &value, NULL);<br /> }</p> <p>void * ledrpm_fun(void * pa){<br /> int led_fd,key_fd,conf_fd,fifo_fd;<br /> unsigned char write_value[6]={0x81,0x02,0x83,0x04,0x05,0x06};<br /> char dataptr[12];<br /> char * p[4];<br /> char read_value[4]={5,5,5,5};<br /> int i,ret,key_value;</p> <p> i=key_value=0;<br /> key_fd=open(KBDFILE,O_RDONLY|O_NONBLOCK, S_IRWXU|S_IRWXG|S_IROTH);<br /> if(key_fd<0){<br /> perror("cann't open device /dev/keybutton");<br /> exit(1);<br /> }<br /> led_fd = open(LEDFILE, O_RDWR|O_NONBLOCK, S_IRWXU|S_IRWXG|S_IROTH);<br /> if (led_fd < 0) {<br /> perror("cann't open device /dev/ledrpm ");<br /> exit(1);<br /> }<br /> ret = write(led_fd, write_value,4);<br /> if (ret < 0) {<br /> perror("first write led ");<br /> }<br /> conf_fd = open(CONFIGFILE, O_RDWR|O_CREAT|O_NONBLOCK, S_IRWXU|S_IRWXG|S_IROTH);<br /> if (conf_fd < 0)<br /> perror("cann't open config file:");<br /> else{<br /> i=lseek(conf_fd, 0, SEEK_SET);<br /> if(i==-1)<br /> perror("lseek");<br /> if((i=read(conf_fd, dataptr, 12)) != 12 ){<br /> perror("cann't read data to dataptr!");<br /> printf("read num:%d /n", i);<br /> }else{<br /> for (i=0; i<4; i++){<br /> p[i]=strtok((char *)(dataptr+i*3)," "); // 分割空格字符<br /> printf("%s ", p[i]);<br /> write_value[i]=strtoul(p[i],NULL,16); // 转成无符号整型<br /> }<br /> printf("/n write_value:%x,%x,%x,%x /n",write_value[0],write_value[1],write_value[2],write_value[3]);<br /> }<br /> }<br /> ret = read(led_fd, read_value, 4);<br /> if(ret==-1){<br /> printf("init read led1-4 error!!!/n");<br /> exit(1);<br /> }else{<br /> printf("init read led1:%d,led2:%d,led3:%d,led4:%d *_*/n",<br /> read_value[0],read_value[1],read_value[2],read_value[3]);<br /> sleep(3);<br /> if ((ret=write(led_fd, write_value,4)) == -1)<br /> printf("second write led return:%d /n", ret);<br /> }</p> <p> init_sigaction();<br /> init_time();<br /> for (;;) {<br /> if(ledrpm_key_reg(key_fd) == -1)<br /> perror("ledrpm_key_reg");<br /> if(keyregdat.key_flag & 0x01){<br /> ret=(keyregdat.key_flag&0x0f00)>>8;<br /> printf("You pressed quick button:%d/n",ret);<br /> if(ret>=1 && ret<=6 ){<br /> write_value[ret-1] ^=(1<<7);<br /> // if(write(led_fd, &write_value[ret-1],1)==-1)<br /> if(ioctl(led_fd, write_value[ret-1],1)==-1)<br /> printf(" write led%d error!!!/n",ret);<br /> else{<br /> printf(" write led%d successful*_* /n",ret);<br /> fifo_fd=0;<br /> /* if(fifo_fd=open(RPM_FIFO,O_WRONLY|O_NONBLOCK,0755) < 0)<br /> perror("fifo write open");<br /> if(write(fifo_fd,&write_value[ret-1],1)<0 && errno != ENXIO)<br /> perror("fifo write");<br /> else printf("write fifo:0x%x success/n",write_value[ret-1]);<br /> close(fifo_fd); */<br /> }<br /> keyregdat.key_to_sw=write_value[ret-1];<br /> g_PowerControlBoard.Start();<br /> sleep(1);<br /> g_PowerControlBoard.Pause();<br /> }<br /> keyregdat.key_flag=0;<br /> }else if(keyregdat.key_flag & 0x10){<br /> ret=(keyregdat.key_flag&0x0f00)>>8;<br /> printf("You pressed long button:%d/n",ret);<br /> keyregdat.key_flag=0;<br /> }<br /> }<br /> close(conf_fd);<br /> close(led_fd);<br /> close(key_fd);<br /> return 0;<br /> }<br /> int main(int argc, char** argv){</p> <p>/* if((mkfifo(RPM_FIFO,O_CREAT|O_EXCL|O_NONBLOCK)<0)&&(errno!=EEXIST))<br /> printf("cannot create fifoserver/n");<br /> if(errno!=EEXIST)<br /> printf("/ncreat:%s successful!/n",RPM_FIFO); */<br /> g_PowerControlBoard.InitComPort(COM1, B9600);<br /> g_PowerControlBoard.Pause(); /*电源控制板串口通讯线程开始*/<br /> /*LED检测线程,根据LED状态控制电源状态*/<br /> pthread_create((pthread_t *)&g_LedCheckThreadId, NULL, ledrpm_fun, NULL);<br /> while (true)<br /> {<br /> sleep(1000);<br /> }<br /> if(unlink(RPM_FIFO)==-1)<br /> perror("unlink RPM_FIFO");<br /> return 1;<br /> }</p> <p>