Linux和android平台的GSM/GPRS模块测试
时间：10-02
整理：3721RD
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这里记录一种在普通的linux或安卓智能手机平台上，用快捷的方法测试Modem模块的驱动是否正常工作。需要注意的是：程序的运行依赖于交叉编译器版本，必须是带串口操作库函数的编译器，比如2008q3。编译完成后执行，即可显示一系列待输入选项，进行测试项目。
（1）主函数
[cpp] view plaincopy- // this is a test about GPRS
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
- #include <fcntl.h>
- #include <unistd.h>
- #include <termios.h> // set baud rate，交叉编一起必须带这种库
- #include <fcntl.h>
- #include <sys/select.h>
- #include <sys/time.h>
- #include <sys/types.h>
- #define FUNC_RUN 0
- #define FUNC_NOT_RUN 1
- //测试项目
- #define SIMPLE_TEST 1
- #define READ_SIM_CARD_ID 2
- #define GSM_GPRS_SIGNAL 3
- #define MAKE_A_CALL 4
- #define WAIT_A_CALL 5
- #define SHORT_MESSAGE 6
- #define power_MANAGE 7
- #define FUNC_QUIT 8
- //短消息测试子项目
- #define SEND_SHORT_MESSAGE 1
- #define READ_SHORT_MESSAGE 2
- #define CONFIG_SHORT_MESSAGE_ENV 3
- #define QUIT_SHORT_MESSAGE 4
- #define DEVICE_TTYS "/dev/s3c2410_serial1" //modem分配的UART口
- #define MAX_LEN_OF_SHORT_MESSAGE 140
- #define RECEIVE_BUF_WAIT_1S 1
- #define RECEIVE_BUF_WAIT_2S 2
- #define RECEIVE_BUF_WAIT_3S 3
- #define RECEIVE_BUF_WAIT_4S 4
- #define RECEIVE_BUF_WAIT_5S 5
- int main(void)
- {
- int fd;
- printf("\nGSM/GPRS TESTS\n\n");
- fd = open(DEVICE_TTYS, O_RDWR); //打开TTY设备
- if (fd == -1)
- {
- printf("open device %s error\n",DEVICE_TTYS);
- }
- else
- {
- init_ttyS(fd); // init device
- func_GSM(fd); // GSM/GPRS functions
- if (close(fd)！=0)
- printf("close device %s error",DEVICE_TTYS);
- }
- return 0;
- }
配置tty的函数
[cpp] view plaincopy
- void init_ttyS(int fd)
- {
- struct termios options;
- bzero(&options, sizeof(options)); // clear options
- cfsetispeed(&options,B115200); // setup baud rate
- cfsetospeed(&options,B115200);
- options.c_cflag |= (CS8 | CREAD);
- options.c_iflag = IGNPAR;
- tcflush(fd, TCIFLUSH);
- tcsetattr(fd, TCSANOW, &options);
- }
MODEM测试模块主函数
[cpp] view plaincopy
- void func_GSM(int fd)
- {
- int flag_func_run;
- int flag_select_func;
- ssize_t ret;
- flag_func_run = FUNC_RUN;
- while (flag_func_run == FUNC_RUN)
- {
- print_pROMpt(); // print select functions txt
- scanf("%d",&flag_select_func); // user input select
- getchar();
- switch(flag_select_func)
- {
- case SIMPLE_TEST : {GSM_simple_test(fd); break;}
- case READ_SIM_CARD_ID : {GSM_read_sim_card_id(fd); break;}
- case GSM_GPRS_SIGNAL : {GSM_gprs_signal(fd); break;}
- case MAKE_A_CALL : {GSM_call(fd); break;}
- case WAIT_A_CALL : {GSM_wait_call(fd); break;}
- case SHORT_MESSAGE : {GSM_short_mesg(fd); break;}
- case POWER_MANAGE : {GSM_Power_Manage(fd); break;} //break退出switch，但不会退出while
- case FUNC_QUIT :
- {
- flag_func_run = FUNC_NOT_RUN;
- printf("Quit GSM/GPRS function. byebye\n");
- break;
- }
- default :
- {
- printf("please input your select use 1 to 7\n");
- }
- }
- }
- }
给出的文本提示选项：
[cpp] view plaincopy- void print_prompt(void)
- {
- printf ("Select what you want to do:\n");
- printf ("1 : Simple Test\n");
- printf ("2 : Read SIM CARD ID\n");
- printf ("3 : Test GSM/GPRS signal\n");
- printf ("4 : Make A Call\n");
- printf ("5 : Wait A Call\n");
- printf ("6 : Short message\n");
- printf ("7 : Power manage\n");
- printf ("8 : Quit\n");
- printf (">");
- } // end print_prompt
（2）各个测试子选项AT命令控制细节：case SIMPLE_TEST
[cpp] view plaincopy- void GSM_simple_test(int fd)
- {
- char *send_buf="at\r";
- GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S);
- }
屏幕回显：
at
OK
（3）用到的公共函数
发送AT命令并读结果
[cpp] view plaincopy- void GSM_GPRS_send_cmd_read_result(int fd, char *send_buf, int rcv_wait)
- {
- char rcv_buf[2048];
- if((send_buf==NULL) || (send_GSM_GPRS_cmd(fd,send_buf))){ // send success , then read
- bzero(rcv_buf,sizeof(rcv_buf));
- if (read_GSM_GPRS_datas(fd,rcv_buf,rcv_wait)){
- printf ("%s\n",rcv_buf);
- }
- else{
- printf ("read error\n");
- }
- }
- else{
- printf("write error\n");
- }
- }
发送AT命令
[cpp] view plaincopy- int send_GSM_GPRS_cmd(int fd, char *send_buf)
- {
- ssize_t ret;
- ret = write(fd,send_buf,strlen(send_buf));
- if (ret == -1)
- {
- printf ("write device %s error\n", DEVICE_TTYS);
- return -1;
- }
- return 1;
- }
读AT应答的结果
[cpp] view plaincopy- int read_GSM_GPRS_datas(int fd, char *rcv_buf,int rcv_wait)
- {
- int retval;
- fd_set rfds;
- struct timeval tv;
- int ret,pos;
- tv.tv_sec = rcv_wait; // wait 2.5s
- tv.tv_usec = 0;
- pos = 0; // point to rceeive buf
- while (1) {
- FD_ZERO(&rfds);
- FD_SET(fd, &rfds);
- retval = select(fd+1 , &rfds, NULL, NULL, &tv);
- if (retval == -1){ //超时
- perror("select()");
- break;
- }
- else if (retval)
- { //判断是否还有数据
- ret = read(fd, rcv_buf+pos, 2048);
- pos += ret; //读出的数据长度
- if (rcv_buf[pos-2] == '\r' && rcv_buf[pos-1] == '\n'){ //如果读到字符串末尾
- FD_ZERO(&rfds);
- FD_SET(fd, &rfds);
- retval = select(fd+1 , &rfds, NULL, NULL, &tv);
- if (！retval) break; // no datas, break
- }
- }
- else{
- printf("No data\n");
- break;
- }
- }
- return 1;
- }
（4）接2，读SIM卡EF-CCID，case READ_SIM_CARD_ID
[cpp] view plaincopy- void GSM_read_sim_card_id(int fd)
- {
- char *send_buf="at+ccid\r";
- GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S);
- }
屏幕回显：
at+ccid
89860076190753501064
（5）获得网络参数case GSM_GPRS_SIGNAL
[cpp] view plaincopy- void GSM_gprs_signal(int fd)
- {
- char *send_buf="at+creg?\r"; //网络注册
- GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S);
- send_buf="at+cgreg?\r";
- GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S);
- send_buf="at+csq\r"; //信号质量
- GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S);
- send_buf="at+cops?\r"; //运营商信息
- GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S);
- }
屏幕回显：
at+creg?
+CREG: 0,1
OK
at+cgreg?
+CGREG: 0,1
OK
at+csq
+CSQ: 25,0
OK
at+cops?
+COPS: 0,0,"CHINA MOBILE"
OK
（6）拨号case MAKE_A_CALL
[cpp] view plaincopy- void GSM_call(int fd)
- {
- char send_buf[17]; //发送缓冲区
- char *send_cmd_ath = "ath\r"; //挂机命令
- int i;
- // input telephone number
- bzero(send_buf,sizeof(send_buf));
- send_buf[0]='a';
- send_buf[1]='t';
- send_buf[2]='d';
- send_buf[16] = '\0';
- printf("please input telephone number:");
- i = 3;
- while (1)
- {
- send_buf=getchar(); //从标准输入设备“键盘”获取输入
- if (send_buf=='\n') break;
- i++;
- }
- send_buf=';'; //发送命令后加符号;
- send_buf[i+1]='\r';
- // end input telphone number
- // send cmd
- GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S); //拨号
- //quit call
- printf("press ENTER for quit:");
- getchar(); //按任意键退出拨号
- // send cmd
- GSM_GPRS_send_cmd_read_result(fd,send_cmd_ath,RECEIVE_BUF_WAIT_1S); //挂机
- }
屏幕回显：
please input telephone number:112
112
atd112;
OK
（7）等待电话case WAIT_A_CALL
- void GSM_wait_call(int fd)
- {
- char rcv_buf[2048];
- char *send_cmd_ath = "ath\r"; //挂机
- int wait_RING;
- wait_RING = 10; //等待10次
- while (wait_RING！=0)
- {
- bzero(rcv_buf,sizeof(rcv_buf));
- if (read_GSM_GPRS_datas(fd,rcv_buf,RECEIVE_BUF_WAIT_1S)){
- printf ("%s\n",rcv_buf); //等待应答
- }
- else{
- printf ("read error\n");
- }
- wait_RING--;
- }
- GSM_GPRS_send_cmd_read_result(fd,send_cmd_ath,RECEIVE_BUF_WAIT_1S);
- printf("quit wait_call\n");
- }
屏幕回显如下：有电话拨入则显示RING
No data
RING
No data
No data
No data
RING
No data
No data
No data
RING
ath
OK
quit wait_call
（8）短信息服务case SHORT_MESSAGE
[cpp] view plaincopy- void GSM_short_mesg(int fd)
- {
- int flag_sm_run, flag_sm_select;
- flag_sm_run = FUNC_RUN;
- while (flag_sm_run == FUNC_RUN)
- {
- printf ("\n Select:\n");
- printf ("1 : Send short message \n");
- printf ("2 : Read all short message \n");
- printf ("3 : Config short message env\n"); //短消息中心
- printf ("4 : quit\n");
- printf (">");
- scanf("%d",&flag_sm_select); //输入选择选项
- getchar(); //等待键盘输入
- switch (flag_sm_select)
- {
- case SEND_SHORT_MESSAGE : { GSM_Send_Message(fd); break; }
- case READ_SHORT_MESSAGE : { GSM_Read_Message(fd); break; }
- case CONFIG_SHORT_MESSAGE_ENV : { GSM_Conf_Message(fd); break; }
- case QUIT_SHORT_MESSAGE : { flag_sm_run = FUNC_NOT_RUN; break; }
- default :
- {
- printf("please input your select use 1 to 3\n");
- }
- }
- }
- printf ("\n");
- } // end GSM_send_mesg
A，首先配置短信息中心
[cpp] view plaincopy- void GSM_Conf_Message(int fd)
- {
- char *send_buf="at+cmgf=1\r"; //设定SMS的控制方式
- char *send_center_buf="at+csca=\"+8613800755500\"\r"; //短信服务中心地址
- GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S);
- // set short message center number
- GSM_GPRS_send_cmd_read_result(fd,send_center_buf,RECEIVE_BUF_WAIT_1S);
- printf("end config short message env\n");
- }
回显：
at+cmgf=1
OK
at+csca="+8613800571500"
OK
end config short message env
B， 发送信息
[cpp] view plaincopy- void GSM_Send_Message(int fd)
- {
- char cmd_buf[23];
- char short_message_buf[MAX_LEN_OF_SHORT_MESSAGE];
- int i;
- char rcv_buf;
- bzero(cmd_buf,sizeof(cmd_buf));
- bzero(short_message_buf,sizeof(short_message_buf));
- printf ("send short message:\n");
- cmd_buf[0]='a';
- cmd_buf[1]='t';
- cmd_buf[2]='+';
- cmd_buf[3]='c';
- cmd_buf[4]='m';
- cmd_buf[5]='g';
- cmd_buf[6]='s';
- cmd_buf[7]='=';
- cmd_buf[8]='"'; //AT+CMGS发送短信息命令
- printf ("please input telephone number:");
- i = 9;
- while (1)
- {
- cmd_buf=getchar();
- if (cmd_buf=='\n') break;
- i++; //输入号码
- }
- cmd_buf='"';
- cmd_buf[i+1]='\r';
- cmd_buf[i+2]='\0'; //加上结束符
- // send cmd : at+cmgs="(telephone number)"
- GSM_GPRS_send_cmd_read_result(fd,cmd_buf,RECEIVE_BUF_WAIT_1S);
- // input short message
- printf("please input short message:");
- i = 0;
- while(i < MAX_LEN_OF_SHORT_MESSAGE-2)
- {
- short_message_buf = getchar();
- if (short_message_buf=='\n') break;
- i++;
- }
- short_message_buf = 0x1A;
- short_message_buf[i+1] = '\r';
- short_message_buf[i+2] = '\0';
- // send short message
- GSM_GPRS_send_cmd_read_result(fd, short_message_buf,RECEIVE_BUF_WAIT_4S);
- printf("\nend send short message\n");
- }
回显：
send short message:
please input telephone number:13800138000
at+cmgs="13800138000"
OK
please input short message:teset
teset
teset32
OK
C，读SIM卡的短信息
[cpp] view plaincopy- void GSM_Read_Message(int fd)
- {
- char *send_buf="at+cmgl=\"ALL\"\r"; //读出SIM卡的短信息
- char rcv_buf[2048];
- GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_3S);
- printf("end read all short message\n");
- }
回显：
at+cmgl="ALL"
+CMGL: 1,"REC READ","+8613800138000",,"11/03/17,21:44:39+32" 后面接着显示大量信息。完毕。