linux c語言使用sim900打電話發簡訊
阿新 • • 發佈：2019-02-02
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GPRS模組：sim900
開發板：fl2440
核心版本：linux3.0
交叉編譯器：arm-linux 4.5.4
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使用C語言編寫的一個簡單的控制sim900打電話和傳送簡訊，下面是程式碼
#include <termios.h> 2 #include <stdio.h> 3 #include <stdlib.h> 4 #include <unistd.h> 5 #include <fcntl.h> 6 #include <string.h> 7 #include <sys/types.h> 8 #include <sys/stat.h> 9 struct message_info{ 10 char cnnu[16]; 11 char phnu[16]; 12 char message[128]; 13 }; 14 struct pdu_info { 15 char cnswap[32]; 16 char phswap[32]; 17 }; 18 void serial_init(int fd) 19 { 20 struct termios options; /**/ 21 tcgetattr(fd, &options); /*該函式與裝置檔案繫結*/ 22 options.c_cflag |= ( CLOCAL | CREAD ); /*這兩個保證程式不會成為終端的所有者，用於本地接受和傳送*/ 23 options.c_cflag &= ~CSIZE; /*字元大小遮蔽*/ 24 options.c_cflag &= ~CRTSCTS;/*不使用資料控制流，RTS/CTS流控制 rts ctc 是一種通訊協議*/ 25 options.c_cflag |= CS8; /* 把資料設定為8位*/ 26 options.c_cflag &= ~CSTOPB; /*空格校驗*/ 27 options.c_iflag |= IGNPAR; /*忽略奇偶錯字元*/ 28 options.c_oflag = 0; 29 options.c_lflag = 0; 30 cfsetispeed(&options, B115200); /*設定埠的輸入波特率*/ 31 cfsetospeed(&options, B115200); /*設定埠的輸出波特率*/ 32 tcsetattr(fd,TCSANOW,&options); /*啟用配置，使其生效，第二個引數為 更改立即生效*/ 33 } void swap(char number[],char swap[]) 35 { 36 char ch1[] = "86"; 37 char tmp[16]; 38 int i; 39 memset(swap,0,32); 40 memset(tmp,0,16); 41 strcpy(swap,number); 42 strcat(swap,"f"); 43 strcat(ch1,swap); 44 strcpy(swap,ch1); 45 46 for(i = 0;i <= strlen(swap) - 1;i += 2){ 47 tmp[i + 1] = swap[i]; 48 tmp[i] = swap[i + 1]; 49 } 50 strcpy(swap,tmp); 51 } 52 int send(int fd,char *cmgf,char *cmgs,char *message) 53 { 54 int nread,nwrite; 55 char buff[128]; 56 char reply[128]; 57 memset(buff,0,sizeof(buff)); 58 strcpy(buff,"at\r"); 59 nwrite = write(fd,buff,strlen(buff)); 60 printf("nwrite=%d,%s\n",nwrite,buff); 61 memset(reply,0,sizeof(reply)); 62 sleep(1); 63 nread = read(fd,reply,sizeof(reply)); 64 printf("nread=%d,%s\n",nread,reply); 65 memset(buff,0,sizeof(buff)); 66 strcpy(buff,"AT+CMGF="); 67 strcat(buff,cmgf); 68 strcat(buff,"\r"); 69 nwrite = write(fd,buff,strlen(buff)); 70 printf("nwrite=%d,%s\n",nwrite,buff); 71 memset(reply,0,sizeof(reply)); 72 sleep(1); 73 nread = read(fd,reply,sizeof(reply)); 74 printf("nread=%d,%s\n",nread,reply); 75 memset(buff,0,sizeof(buff)); 76 strcpy(buff,"AT+CMGS=\""); 77 strcat(buff,cmgs); 78 79 strcat(buff,"\""); 80 strcat(buff,"\r"); 81 nwrite = write(fd,buff,strlen(buff)); 82 printf("nwrite=%d,%s\n",nwrite,buff); 83 memset(reply,0,sizeof(reply)); 84 sleep(1); 85 nread = read(fd,reply,sizeof(reply)); 86 printf("nread=%d,%s\n",nread,reply); 87 memset(buff,0,sizeof(buff)); 88 strcpy(buff,message); 89 nwrite = write(fd,buff,strlen(buff)); 90 printf("nwrite=%d,%s\n",nwrite,buff); 91 memset(reply,0,sizeof(reply)); 92 sleep(1); 93 nread = read(fd,reply,sizeof(reply)); 94 printf("nread=%d,%s\n",nread,reply); 95 } 96 int send_en_message(int fd,struct message_info info) 97 { 98 getchar(); /*把緩衝區的回車吃掉*/ 99 char cmgf[] = "1"; 100 int conter = 0; 101 char cmgs[16] = {'\0'}; 102 printf("enter recever phnumber :\n"); 103 gets(info.phnu); 104 while(strlen(info.phnu) != 11){ 105 if(conter >= 3){ 106 printf("conter out !\n"); 107 return -1; 108 } 109 printf("number shuld be --11-- bits ! enter agin :\n"); 110 gets(info.phnu); 111 conter ++; 112 } 113 printf("enter you message !\n"); 114 gets(info.message); 115 strcat(info.message,"\x1a"); 116 strcat(cmgs,info.phnu); 117 send(fd,cmgf,cmgs,info.message); 118 } 119 120 int call_telephone(int fd) 121 { 122 getchar(); 123 int count=0; 124 int num_lenth; 125 char call_num[128]; 126 int nwrite,nread; 127 int * a; 128 int h; 129 char buff[128]; 130 131 132 printf("enter your centre phnumber :\n"); 133 gets(call_num); 134 num_lenth=strlen(call_num); 135 while(num_lenth!=11) 136 { 137 if(count>3) 138 { 139 printf("count out !!\n"); 140 return -1; 141 } 142 143 count++; 144 printf("please input -- 11--bits!\n"); 145 gets(call_num); 146 num_lenth=strlen(call_num); 147 } 148 memset(buff,0,sizeof(buff)); 149 strcpy(buff,"atd"); 150 printf("buff=%s\n",buff); 151 strcat(buff,call_num); 152 strcat(buff,";\r"); 153 nwrite=write(fd,buff,strlen(buff)); 154 sleep(3); 155 memset(buff,0,sizeof(buff)); 156 nread=read(fd,buff,sizeof(buff)); 157 printf("buff=%s\n",buff); 158 printf("++++++++++++++++++++++\n"); 159 160 printf("press 2 hung up\n"); 161 printf("++++++++++++++++++++++\n"); 162 sleep(1); 163 scanf("%d",&h); 164 printf("h=%d",h) ; 165 while(h!=2) 166 { 167 printf("please input currect num\n"); 168 scanf("%d",&h); 169 } 170 memset(buff,0,sizeof(buff)); 171 strcpy(buff,"ATH\r"); 172 write(fd,buff,sizeof(buff)); 173 printf("has hunged up"); 174 return 0; 175 /* while(1) 176 { 177 178 memset(buff,0,sizeof(buff)); 179 nread=read(fd,buff,sizeof(buff)); 180 a=strstr(buff,"BUSY"); 181 return 0; 182 } 183 */ 184 185 186 } 187 188 int main() 189 { 190 int fd; 191 char choice; 192 struct message_info info; 193 fd = open( "/dev/ttyS1", O_RDWR|O_NOCTTY|O_NDELAY); 194 if (-1 == fd){ 195 perror("Can't Open Serial Port"); 196 } 197 serial_init(fd); 198 printf("\n============================================\n"); 199 printf("\tthis is a gprs test program !\n"); 200 printf("============================================\n"); 201 printf("enter your selete :\n"); 202 printf("1.send english message.\n"); 203 printf("2.call telephone\n"); 204 printf("3.exit.\n"); 205 choice = getchar(); 206 switch(choice) 207 { 208 case '1': send_en_message(fd,info); 209 break; 210 case '2': call_telephone(fd); 211 break; 212 case '3': break; 213 default : break; 214 } 215 close(fd); 216 return 0; 217 }