Linux和android平台的GSM/GPRS模組測試

        這裡記錄一種在普通的LINUX或安卓智能手機平台上，用快捷的方法測試MODEM模組的驅動是否正常工作。需要注意的是：程式的運行依賴於交叉編譯器版本，必須是帶串口操作庫函數的編譯器，比如2008q3。編譯完成後執行，即可顯示一系列待輸入選項，進行測試專案。

（1）主函數

// 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，交叉編一起必須帶這種庫#include <fcntl.h>#include <sys/select.h>#include <sys/time.h>#include <sys/types.h>#define FUNC_RUN0#define FUNC_NOT_RUN1//測試專案#define SIMPLE_TEST 1#define READ_SIM_CARD_ID 2#define GSM_GPRS_SIGNAL3#define MAKE_A_CALL 4#define WAIT_A_CALL 5#define SHORT_MESSAGE 6#define POWER_MANAGE 7#define FUNC_QUIT 8//短訊息測試子項目#define SEND_SHORT_MESSAGE1#define READ_SHORT_MESSAGE2#define CONFIG_SHORT_MESSAGE_ENV        3#define QUIT_SHORT_MESSAGE4#define DEVICE_TTYS "/dev/s3c2410_serial1"//modem分配的UART口#define MAX_LEN_OF_SHORT_MESSAGE140#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 5int main(void){        int fd;        printf("\nGSM/GPRS TESTS\n\n");        fd = open(DEVICE_TTYS, O_RDWR);//開啟TTY裝置         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的函數

void init_ttyS(int fd){struct termios options;bzero(&options, sizeof(options));       // clear optionscfsetispeed(&options,B115200);            // setup baud ratecfsetospeed(&options,B115200);options.c_cflag |= (CS8 | CREAD);options.c_iflag = IGNPAR;tcflush(fd, TCIFLUSH);tcsetattr(fd, TCSANOW, &options);}

       MODEM測試模組主函數

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，但不會退出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");                        }                }        }}

       給出的文本提示選項：

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）各個測試子選項AT命令控制細節：case SIMPLE_TEST

void GSM_simple_test(int fd){char *send_buf="at\r";GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S);} 

      螢幕回顯：

at
OK

（3）用到的公用函數

        發送AT命令並讀結果

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 readbzero(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");}} 

        發送AT命令

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;} 

       讀AT應答的結果

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 bufwhile (1){         FD_ZERO(&rfds);                  FD_SET(fd, &rfds);                  retval = select(fd+1 , &rfds, NULL, NULL, &tv);                  if (retval == -1){ //逾時                        perror("select()");                        break;                  }else if (retval) {//判斷是否還有資料                        ret = read(fd, rcv_buf+pos, 2048);                        pos += ret;//讀出的資料長度                        if (rcv_buf[pos-2] == '\r' && rcv_buf[pos-1] == '\n'){//如果讀到字串末尾                                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，讀SIM卡EF-CCID，case READ_SIM_CARD_ID

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);} 

       螢幕回顯：

at+ccid
89860076190753501064

（5）獲得網路參數case GSM_GPRS_SIGNAL

void GSM_gprs_signal(int fd){         char *send_buf="at+creg?\r";//網路註冊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";//訊號品質GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S);         send_buf="at+cops?\r";//電訊廠商資訊GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S);} 

螢幕回顯：

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）撥號case MAKE_A_CALL

void GSM_call(int fd){char send_buf[17];//發送緩衝區char *send_cmd_ath = "ath\r";//掛機命令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[i]=getchar();//從標準輸入裝置“鍵盤”擷取輸入                if (send_buf[i]=='\n') break;                i++;        }        send_buf[i]=';';//發送命令後加符號;        send_buf[i+1]='\r';// end input telphone number// send cmdGSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_1S);//撥號        //quit call        printf("press ENTER for quit:");        getchar();//按任意鍵退出撥號        // send cmdGSM_GPRS_send_cmd_read_result(fd,send_cmd_ath,RECEIVE_BUF_WAIT_1S);//掛機}

     螢幕回顯：

please input telephone number:112
112
atd112;
OK
（7）等待電話case WAIT_A_CALL

void GSM_wait_call(int fd){char rcv_buf[2048];char *send_cmd_ath = "ath\r";//掛機         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);//等待應答                  }                  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");}

      螢幕回顯如下：有電話撥入則顯示RING

No data

RING

No data

No data

No data

RING

No data

No data

No data

RING

ath
OK

quit wait_call

（8）簡訊息服務case SHORT_MESSAGE

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");//短訊息中心                printf ("4 : quit\n");                printf (">");                scanf("%d",&flag_sm_select);//輸入選擇選項                getchar();//等待鍵盤輸入       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，首先配置簡訊息中心

void GSM_Conf_Message(int fd){char *send_buf="at+cmgf=1\r";//設定SMS的控制方式char *send_center_buf="at+csca=\"+8613800755500\"\r";//簡訊服務中心地址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");}

回顯：

at+cmgf=1
OK

at+csca="+8613800571500"
OK

end config short message env

     B， 發送資訊

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傳送簡訊息命令        printf ("please input telephone number:");        i = 9;        while (1)        {                cmd_buf[i]=getchar();                if (cmd_buf[i]=='\n') break;                i++;//輸入號碼        }cmd_buf[i]='"';         cmd_buf[i+1]='\r';cmd_buf[i+2]='\0';//加上結束符         // 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[i] = getchar();                if (short_message_buf[i]=='\n') break;                i++;        }        short_message_buf[i] = 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");} 

      回顯：

send short message:
please input telephone number:13800138000
at+cmgs="13800138000"
OK

please input short message:teset
teset
teset
OK

       C，讀SIM卡的簡訊息

void GSM_Read_Message(int fd){char *send_buf="at+cmgl=\"ALL\"\r";//讀出SIM卡的簡訊息char rcv_buf[2048];         GSM_GPRS_send_cmd_read_result(fd,send_buf,RECEIVE_BUF_WAIT_3S);printf("end read all short message\n");} 

      回顯：

at+cmgl="ALL"
+CMGL: 1,"REC READ","+8613800138000",,"11/03/17,21:44:39+32" 後面接著顯示大量資訊。完畢。