linux c语言使用sim900打电话发短信

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GPRS模块：sim900

开发板：fl2440

内核版本：linux3.0

交叉编译器：arm-Linux  4.5.4

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   使用C语言编写的一个简单的控制sim900打电话和发送短信，下面是代码

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#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);  /*该函数与设备文件绑定*/  

 22                 options.c_cflag |= ( CLOCAL | CREAD ); /*这两个保证程序不会成为终端的所有者，用于本地接受和发送*/  

 23                 options.c_cflag &= ~CSIZE; /*字符大小屏蔽*/  

 24                 options.c_cflag &= ~CRTSCTS;/*不使用数据控制流，RTS/CTS流控制  rts ctc 是一种通信协议*/  

 25                 options.c_cflag |= CS8;  /* 把数据设置为8位*/  

 26                 options.c_cflag &= ~CSTOPB; /*空格校验*/  

 27                 options.c_iflag |= IGNPAR; /*忽略奇偶错字符*/  

 28                 options.c_oflag = 0;  

 29                 options.c_lflag = 0;  

 30                 cfsetispeed(&options, B115200); /*设置端口的输入波特率*/  

 31                 cfsetospeed(&options, B115200);  /*设置端口的输出波特率*/  

 32                 tcsetattr(fd,TCSANOW,&options); /*激活配置，使其生效，第二个参数为 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();  /*把缓冲区的回车吃掉*/  

 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 }