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#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <termios.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <linux/input.h>
#include <pthread.h>
 
#define CMD_CHANGLE "\xEE\xB1\x00\x00\x01\xFF\xFC\xFF\xFF"
int salesman_num=6;
int fd;
int key_cond = 0;
int set_opt(int,int,int,char,int);
static pthread_mutex_t key_lock;
void key_run();
 
void main(int argc, char* argv[])
{
    int ret,flag = 0;
    int i=0;
    pthread_t key_id;
    char uart[] = {"/dev/ttySAC3"};
     
     
    unsigned char cmd[9] = { 0xEE, 0xB1, 0x00, 0x00, 0x00, 0xFF, 0xFC, 0xFF, 0xFF}; 
    unsigned char buf[16]={0};
    //sprintf(cmd,"%H %H %H %H %H %H %H %H %H","EE", "B1", "00", "00", flag++, "FF", "FC", "FF", "FF");
    //printf("%s\n",cmd);
    printf("%s\n",uart);
    pthread_mutex_init(&key_lock, NULL);
    if((fd = open(uart, O_RDWR))<0)
    {   
        printf("open %s is failed\n", uart);    
        return;
    }
    else{
        set_opt(fd, 9600, 8, 'N', 1);
        //set_opt(fd, 115200, 8, 'N', 1); 
        ret = pthread_create(&key_id,NULL,(void *)key_run,NULL);
        if(ret!=0){
        printf("Create pthread error!\n");
        exit(1);
        }
        sleep(5);
        while(1){
            if(key_cond){
                pthread_mutex_lock(&key_lock);
                key_cond=0;
                pthread_mutex_unlock(&key_lock);
                //sleep(5);
                continue;
            }
            if(flag > 5 ){
                flag = 1;
                //cmd[4] = salesman_num;            
            }
            cmd[4] = flag;
            write(fd,cmd,9);
            printf("%x\n",cmd[4]);
            sleep(3);
            memset(buf,0,16);
            read(fd,buf,9);
            for(i=0;i<9;i++ )
                printf("%x ,",buf[i]);
            printf("\n");
            flag++;
        }
    }
}
 
 
 
int set_opt(int fd,int nSpeed, int nBits, char nEvent, int nStop)
{
    struct termios newtio,oldtio;
    if  ( tcgetattr( fd,&oldtio)  !=  0) { 
        perror("SetupSerial 1");
        return -1;
    }
    bzero( &newtio, sizeof( newtio ) );
    newtio.c_cflag  |=  CLOCAL | CREAD;
    newtio.c_cflag &= ~CSIZE;
 
    switch( nBits )
    {
    case 7:
        newtio.c_cflag |= CS7;
        break;
    case 8:
        newtio.c_cflag |= CS8;
        break;
    }
 
    switch( nEvent )
    {
    case 'O':
        newtio.c_cflag |= PARENB;
        newtio.c_cflag |= PARODD;
        newtio.c_iflag |= (INPCK | ISTRIP);
        break;
    case 'E': 
        newtio.c_iflag |= (INPCK | ISTRIP);
        newtio.c_cflag |= PARENB;
        newtio.c_cflag &= ~PARODD;
        break;
    case 'N':  
        newtio.c_cflag &= ~PARENB;
        break;
    }
 
    switch( nSpeed )
    {
    case 2400:
        cfsetispeed(&newtio, B2400);
        cfsetospeed(&newtio, B2400);
        break;
    case 4800:
        cfsetispeed(&newtio, B4800);
        cfsetospeed(&newtio, B4800);
        break;
    case 9600:
        cfsetispeed(&newtio, B9600);
        cfsetospeed(&newtio, B9600);
        break;
    case 115200:
        cfsetispeed(&newtio, B115200);
        cfsetospeed(&newtio, B115200);
        break;
    case 460800:
        cfsetispeed(&newtio, B460800);
        cfsetospeed(&newtio, B460800);
        break;
    case 921600:
        printf("B921600\n");
        cfsetispeed(&newtio, B921600);
                cfsetospeed(&newtio, B921600);
        break;
    default:
        cfsetispeed(&newtio, B9600);
        cfsetospeed(&newtio, B9600);
        break;
    }
    if( nStop == 1 )
        newtio.c_cflag &=  ~CSTOPB;
    else if ( nStop == 2 )
    newtio.c_cflag |=  CSTOPB;
    newtio.c_cc[VTIME]  = 0;
    newtio.c_cc[VMIN] = 0;
    tcflush(fd,TCIFLUSH);
    if((tcsetattr(fd,TCSANOW,&newtio))!=0)
    {
        perror("com set error");
        return -1;
    }
    return 0;
}
 
void key_run(){
    int fd_key;
    int version;
    int ret;
    unsigned char cmd[9] = { 0xEE, 0xB1, 0x00, 0x00, 0x00, 0xFF, 0xFC, 0xFF, 0xFF};
    struct input_event ev;
    fd_key = open("/dev/input/event0", O_RDONLY);
    if (fd < 0) {
        printf("open file failed\n");
        exit(1);
    }
    ioctl(fd_key, EVIOCGVERSION, &version);
    printf("evdev driver version is 0x%x: %d.%d.%d\n",version, version>>16, (version>>8) & 0xff, version & 0xff);
 
    while (1) {
        ret = read(fd_key, &ev, sizeof(struct input_event));
        if (ret < 0) {
            printf("read event error!\n");
            exit(1);
        }
        if (ev.type == EV_KEY){
            printf("type %d,code %d, value %d\n", ev.type, ev.code, ev.value);
            if(ev.value){
                pthread_mutex_lock(&key_lock);
                key_cond=1;
                pthread_mutex_unlock(&key_lock);
                if(salesman_num >=15){
                    salesman_num = 6;
                }else{
                    salesman_num++;
                }
                cmd[4] = salesman_num;
                write(fd,cmd,9);
            }
            //cmd [4] = salesman_num;
            //write(fd,cmd,9);
        }
    }
}

#CC = /usr/local/arm/4.3.2/bin/arm-linux-gcc
#CFLAGS = -I/usr/local/arm/4.3.2/arm-none-linux-gnueabi/libc/usr/include
 
CC = /usr/local/arm/arm-2009q3/bin/arm-none-linux-gnueabi-gcc
CFLAGS = -I/usr/local/arm/arm-2009q3/arm-none-linux-gnueabi/libc/usr/include
 
uarttest: uarttest.c
    $(CC) $(CFLAGS) -o uarttest uarttest.c -static -lpthread
clean:
    rm -rf uarttest