1、一個(gè)在linux下的串口程序例子用于mini2440與周立功非接觸式ic卡模塊的通信頭文件#include #include #include #include #include #include #include #include #include #include #include class cardreader : public qthreadq_objectpublic:cardreader();int fd_port;int open_port(int comport);int set_opt(int fd,int nspeed, int nbits, char nevent, i

2、nt nstop);int initcardreader(int fd_port);unsigned int checkcard(int fd_port);unsigned int readcardid (int fd_port);int beep(int fd_port);void autorun(void);void sendmessage(int data);signals:void message(qstring);protected:private:;cpp文件#include cardreader.hcardreader:cardreader()int cardreader:ope

3、n_port(int comport)/* 打開端口 成功返回文件描述符 失敗返回0*/*open com port*/* comport=1 open com1 comport=2 open com2 comport=3 open com3*/char *dev=/dev/ttysac0,/dev/ttysac1,/dev/ttysac2;longvdisable;int fd;if (comport=1)fd = open( /dev/ttysac0, o_rdwr|o_noctty|o_ndelay);if (0 = fd)emit message(open port error 1);

4、return(0); else if(comport=2)fd = open( /dev/ttysac1, o_rdwr|o_noctty|o_ndelay);if (0 = fd) emit message(open port error 1);return(0);else if (comport=3)fd = open( /dev/ttysac2, o_rdwr|o_noctty|o_ndelay);if (0 = fd) emit message(open port error 1);return(0);if(fcntl(fd, f_setfl, 0)1000)/等待超時(shí)則退出retur

5、n 0; while (readnum=0);if (buffer0!=0x06)return 0;/發(fā)送 0x00 0x52 0x00 0xad 0x03/usleep(40*1000);/等待40msbuffer0=0x00;buffer1=0x52;buffer2=0x00;buffer3=0xad;buffer4=0x03;write(fd_port,buffer,5);/等待0x20回應(yīng) 否則出錯(cuò)退出usleep(40*1000);/等待50msmemset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0timer=0;doreadnum=read(fd_

6、port,buffer,sizeof(buffer);usleep(100);timer+;if (timer1500)/等待超時(shí)則退出return 0; while (readnum=0);if (buffer0!=0x20)return 0;/發(fā)送0x06buffer0=0x06;write(fd_port,buffer,1);/等待0x00 0x00 0x00 0xff 0x03回應(yīng) 否則出錯(cuò)退出usleep(40*1000);/等待40msmemset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0timer=0;doreadnum=read(fd_port

7、,buffer,sizeof(buffer);usleep(100);timer+;if (timer1000)/等待超時(shí)則退出return 0; while (readnum=0);if (buffer0!=0x00)|(buffer1!=0x00)|(buffer2!=0x00)|(buffer3!=0xff)|(buffer4!=0x03)return 0;/發(fā)送開始符 0x20buffer0=0x20;write(fd_port,buffer,1);/等待0x06回應(yīng) 否則出錯(cuò)退出usleep(40*1000);/等待40msmemset(buffer,0,sizeof(buffer)

8、;/buffer 緩沖區(qū)清0timer=0;doreadnum=read(fd_port,buffer,sizeof(buffer);usleep(100);timer+;if (timer1000)/等待超時(shí)則退出return 0; while (readnum=0);if (buffer0!=0x06)return 0;/發(fā)送 00 4c 08 00 00 ff ff ff ff ff ff bb 03buffer0=0x00;buffer1=0x4c;buffer2=0x08;buffer3=0x00;buffer4=0x00;buffer5=0xff;buffer6=0xff;buff

9、er7=0xff;buffer8=0xff;buffer9=0xff;buffer10=0xff;buffer11=0xbb;buffer12=0x03;write(fd_port,buffer,13);/等待0x20回應(yīng) 否則出錯(cuò)退出usleep(40*1000);/等待40msmemset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0timer=0;doreadnum=read(fd_port,buffer,sizeof(buffer);usleep(100);timer+;if (timer1000)/等待超時(shí)則退出return 0; while (read

10、num=0);if (buffer0!=0x20)return 0;/發(fā)送0x06buffer0=0x06;write(fd_port,buffer,1);/等待0x00 0x00 0x00 0xff 0x03回應(yīng) 否則出錯(cuò)退出usleep(40*1000);/等待40msmemset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0timer=0;doreadnum=read(fd_port,buffer,sizeof(buffer);usleep(100);timer+;if (timer1000)/等待超時(shí)則退出return 0; while (readnum=

11、0);if (buffer0!=0x00)|(buffer1!=0x00)|(buffer2!=0x00)|(buffer3!=0xff)|(buffer4!=0x03)return 0;return 1;unsigned int cardreader:checkcard(int fd_port)/* 檢查天線范圍內(nèi)有無卡，有返回1，無或失敗返回0 */unsigned char buffer32;int readnum;unsigned int timer;memset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0/發(fā)送開始符 0x20buffer0=0x20;

12、write(fd_port,buffer,1);/等待0x06回應(yīng) 否則出錯(cuò)退出usleep(40*1000);/等待40mstimer=0;memset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0doreadnum=read(fd_port,buffer,sizeof(buffer);usleep(100);timer+;if (timer1000)/等待超時(shí)則退出 /emit message(card found error 1);return 0; while (readnum=0);if (buffer0!=0x06)emit message(card

13、found error 2);return 0;/發(fā)送 00 41 01 01 be 03buffer0=0x00;buffer1=0x41;buffer2=0x01;buffer3=0x01;buffer4=0xbe;buffer5=0x03;write(fd_port,buffer,6);/等待0x20回應(yīng) 否則出錯(cuò)退出usleep(40*1000);/等待50msmemset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0timer=0;doreadnum=read(fd_port,buffer,sizeof(buffer);usleep(100);timer

14、+;if (timer1000)/等待超時(shí)則退出return 0; while (readnum=0);if (buffer0!=0x20)emit message(card found error 3);return 0;/發(fā)送0x06buffer0=0x06;write(fd_port,buffer,1);/等待0x00 0x00 0x02 0x04 0x00 0xf9 0x03回應(yīng)usleep(50*1000);/等待40msmemset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0timer=0;doreadnum=read(fd_port,buffer,

15、sizeof(buffer);usleep(100);timer+;if (timer1000)/等待超時(shí)則退出emit message(card found error 4);return 0; while (readnum=0);if (buffer0!=0x00)|(buffer1!=0x00)|(buffer2!=0x02)|(buffer3!=0x04)|(buffer4!=0x00)|(buffer5!=0xf9)|(buffer6!=0x03)/emit message(card found error 5);return 0;return 1;unsigned int card

16、reader:readcardid (int fd_port)/* 讀取卡id號(hào)碼，成功返回32位整數(shù)，無或失敗返回0 */unsigned char buffer32;int readnum;unsigned int timer;unsigned int result;memset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0/發(fā)送開始符 0x20buffer0=0x20;write(fd_port,buffer,1);/等待0x06回應(yīng) 否則出錯(cuò)退出usleep(40*1000);/等待40mstimer=0;memset(buffer,0,sizeof(bu

17、ffer);/buffer 緩沖區(qū)清0doreadnum=read(fd_port,buffer,sizeof(buffer);usleep(100);timer+;if (timer1000)/等待超時(shí)則退出return 0; while (readnum=0);if (buffer0!=0x06)return 0;/發(fā)送 00 71 02 00 00 8c 03buffer0=0x00;buffer1=0x71;buffer2=0x02;buffer3=0x00;buffer4=0x00;buffer5=0x8c;buffer6=0x03;write(fd_port,buffer,7);/

18、等待0x20回應(yīng) 否則出錯(cuò)退出usleep(40*1000);/等待50msmemset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0timer=0;doreadnum=read(fd_port,buffer,sizeof(buffer);usleep(100);timer+;if (timer1000)/等待超時(shí)則退出return 0; while (readnum=0);if (buffer0!=0x20)return 0;/發(fā)送0x06buffer0=0x06;write(fd_port,buffer,1);/等待0x00 0x00 0x04 0x04 .

19、0x03回應(yīng)usleep(40*1000);/等待40msmemset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0timer=0;doreadnum=read(fd_port,buffer,sizeof(buffer);usleep(100);timer+;if (timer1000)/等待超時(shí)則退出return 0; while (readnum=0);if (buffer0!=0x00)|(buffer1!=0x00)|(buffer2!=0x04)|(buffer8!=0x03)return 0;result=0;result=buffer3;result

20、+=buffer48;result+=buffer516;result+=buffer61000)/等待超時(shí)則退出return 0; while (readnum=0);if (buffer0!=0x06)return 0;/發(fā)送 00 60 04 0a 19 19 01 90 03buffer0=0x00;buffer1=0x60;buffer2=0x04;buffer3=0x0a;buffer4=0x19;buffer5=0x19;buffer6=0x01;buffer7=0x90;buffer8=0x03;write(fd_port,buffer,9);/等待0x20回應(yīng) 否則出錯(cuò)退出usleep(40*1000);/等待50msmemset(buffer,0,sizeof(buffer);/buffer 緩沖區(qū)清0timer=0;doreadnum=read(fd_port,buffer,sizeof(buffer);usleep(100);timer+;if (timer1000)/等待超時(shí)則退出return 0; while (readnum=0);if (buffer0!=0x20)return 0;/發(fā)送0x06buffe