以下代码是通过串口发送AT指令：
atcmd.c:
#include
#include
#include "atcmd.h"
static HANDLE hCom;
static char com_name[32] = {0};
static int BaudRate;
FILE *fp;
int AT_ComOpen()
{
fp = fopen("debug.txt", "w");
fputs("AT_ComOpen:", fp);
fputs(com_name, fp);
fputs("\n", fp);
fclose(fp);
hCom = SerialOpen(com_name, M_ASYNC);
if(!hCom)
{
printf("串口端口打开失败\n");
return -1;
}
SerialSet(hCom, BaudRate);
return 0;
}
int AT_ComClose()
{
SerialClose(hCom);
return 0;
}
int AT_SendCmd(char *cmd, int len)
{
if(SerialSend(hCom, cmd, len, M_ASYNC) <0)
{
printf("SendCmd Failed\n");
return -1;
}
return 0;
}
int AT_RecvData(char *rdata)
{
SerialRecv(hCom, rdata, M_ASYNC);
return 0;
}
static int ConverToUnicode(char *indata, char *outdata)
{
int len = strlen(indata);
int wlen = sizeof(wchar_t)*len;
int i=0;
char buf[1024];
wchar_t *wch = (wchar_t *)malloc(wlen);
memset(wch, 0, wlen);
MultiByteToWideChar(CP_ACP, 0, indata, len, wch, wlen);
memset(buf, 0, sizeof(buf));
for(i=0; i { if(wch[i] == 0) continue; sprintf(buf+strlen(buf), "%04x", wch[i]); } sprintf(outdata, "%02x", strlen(buf)/2); strcat(outdata, buf); free(wch); return 0; } static int phonenum_parity_exchange(char *indata, char *outdata) { int i=0; int len = strlen(indata); char tmp[16]; int ret = len%2; memset(tmp, 0, sizeof(tmp)); strcpy(tmp, indata); if(ret != 0) { strcat(tmp, "f"); len = len + 1; } for(i=0; i { outdata[i] = tmp[i+1]; outdata[i+1] = tmp[i]; } return 0; } static int get_sms_center(char *sm) { char SendData[32]; char rdata[64]; char *num_start; char *num_end; int num_len; char tmp[16]; sprintf(SendData, "%s\r", "AT+CSCA?"); if(AT_SendCmd(SendData, strlen(SendData)) <0) { printf("set pdumode Failed\n"); AT_ComClose(); return -1; } memset(rdata, 0, sizeof(rdata)); AT_RecvData(rdata); printf("rdata:%s\n", rdata); num_start = strchr(rdata, '"'); if(num_start == NULL) return -1; else *num_start = '\0'; printf("rdata num:%s\n", num_start+1); num_end = strchr(num_start+1, '"'); if(num_end == NULL) return -1; else *num_end = '\0'; printf("rdata start:%s\n", num_start+2); memset(tmp, 0, sizeof(tmp)); phonenum_parity_exchange(num_start+2, tmp); num_len = (strlen(tmp) + 2)/2; sprintf(sm, "%02x%s%s", num_len, "91", tmp); return 0; } static int get_sms_dest(char *phonenum, char *dest) { char tmp[16]; int num_len = strlen(phonenum); memset(tmp, 0, sizeof(tmp)); if(strchr(phonenum, '+')) { num_len = num_len -1; phonenum_parity_exchange(phonenum+1, tmp); sprintf(dest, "%s%02x%s", "1100", num_len, "91"); } else { phonenum_parity_exchange(phonenum, tmp); sprintf(dest, "%s%02x%s", "1100", num_len, "81"); } strcat(dest, tmp); strcat(dest, "000800"); return 0; } int AT_ComConfig(char *name, int rate) { strcpy(com_name, name); BaudRate = rate; if(AT_ComOpen()) return -1; AT_ComClose(); return 0; } int AT_ApnConfig(char *apn) { char SendData[512] = {0}; int cid=1; char *pdp_type="ip"; if(AT_ComOpen()) return -1; /* apn config cmd:at+CGDCONT=[ sprintf(SendData, "at+cgdcont=%d,\"%s\", \"%s\"", cid, pdp_type, apn); if(AT_SendCmd(SendData, strlen(SendData)) <0) { AT_ComClose(); return -1; } AT_ComClose(); return 0; } int SMS_TextMode(char *phonenum, char *msg) { char SendData[512] = {0}; char RecvData[256] = {0}; /* 设置短信发送格式为文本格式 */ sprintf(SendData, "%s\r", "AT+CMGF=1"); if(AT_SendCmd(SendData, strlen(SendData)) <0) { printf("set textmode Failed\n"); AT_ComClose(); return -1; } #if 0 // for debug Sleep(2); SerialRecv(hCom, RecvData, M_ASYNC); printf("Recv data:%s\n", RecvData); #endif /* 设置短信发送号码 */ sprintf(SendData,"AT+CMGS=\"%s\"\r", phonenum); if(SerialSend(hCom, SendData, strlen(SendData), M_ASYNC) <0) { printf("send phone number Failed\n"); AT_ComClose(); return -1; } /* 发送短信内容 */ printf("send msg:%s\n", msg); sprintf(SendData, "%s", msg); strcat(SendData, "\x1a"); if(SerialSend(hCom, SendData, strlen(SendData), M_ASYNC) <0) { printf("send msg Failed\n"); AT_ComClose(); return -1; } return 0; } int SMS_PduMode(char *phonenum, char *msg) { char SendData[2048] = {0}; char RecvData[256] = {0}; char sms_dest[32]; char sms_center[32]; //char *center = "0891683110102105f0"; char pdumsg[1024]; int len; /* 设置短信发送格式为pdu格式 */ sprintf(SendData, "%s\r", "AT+CMGF=0"); if(AT_SendCmd(SendData, strlen(SendData)) <0) { printf("set pdumode Failed\n"); AT_ComClose(); return -1; } memset(RecvData, 0, sizeof(RecvData)); AT_RecvData(RecvData); if(!strstr(RecvData, "OK")) { AT_ComClose(); return -1; } /* get the service message center address */ memset(sms_center, 0, sizeof(sms_center)); if(get_sms_center(sms_center) !=0) strcpy(sms_dest, "0891683110102105f0"); printf("sms_center:%s\n", sms_center); /*get message send address */ memset(sms_dest, 0, sizeof(sms_dest)); get_sms_dest(phonenum, sms_dest); /* convert gb2312 to unicode */ ConverToUnicode(msg, pdumsg); printf("pdumsg:%s\n", pdumsg); len = (strlen(pdumsg) + strlen(sms_dest))/2; printf("the msg len:%d\n", len); /* 设置短信发送号码 */ sprintf(SendData,"AT+CMGS=%d\r", len); if(AT_SendCmd(SendData, strlen(SendData)) <0) { printf("send phone number Failed\n"); AT_ComClose(); return -1; } /* 发送短信内容 */ sprintf(SendData, "%s%s%s", sms_center, sms_dest, pdumsg); printf("send msg:%s, len=%d\n", SendData, strlen(SendData)); strcat(SendData, "\x1a"); if(AT_SendCmd(SendData, strlen(SendData)) <0) { printf("send msg Failed\n"); AT_ComClose(); return -1; } // for debug Sleep(2); SerialRecv(hCom, RecvData, M_ASYNC); printf("Recv data:%s\n", RecvData); return 0; } int AT_SendSMS(char *phonenum, char *msg, int msg_len) { if(AT_ComOpen()) return -1; SMS_PduMode(phonenum, msg); AT_ComClose(); return 0; } int AT_GetFlux(char *rdata, int buf_len) { char SendData[32]; char RecvData[512]; char *ptr; *rdata = '\0'; if(AT_ComOpen()) return -1; /* 获取流量信息 */ sprintf(SendData, "%s\r", "AT^DSFLOWQRY"); if(AT_SendCmd(SendData, strlen(SendData)) <0) { printf("send get flux cmd Failed\n"); AT_ComClose(); return -1; } memset(RecvData, 0, sizeof(RecvData)); AT_RecvData(RecvData); printf("get flux read:%s\n", RecvData); ptr = strchr(RecvData, ':'); if(ptr == NULL) { AT_ComClose(); return -1; } else strncpy(rdata, ptr+1, buf_len); AT_ComClose(); return 0; } int AT_GetCi(char *rdata, int buf_len) { char SendData[32]; char RecvData[64]; char *ptr; *rdata = '\0'; if(AT_ComOpen()) return -1; Sleep(1); /* 设置允许获取位置信息 */ sprintf(SendData, "%s\r", "AT+CREG=2"); if(AT_SendCmd(SendData, strlen(SendData)) <0) { printf("set get cell id Failed\n"); AT_ComClose(); return -2; } memset(RecvData, 0, sizeof(RecvData)); AT_RecvData(RecvData); if(!strstr(RecvData, "OK")) { AT_ComClose(); return -3; } /* 获取位置信息 */ sprintf(SendData, "%s\r", "AT+CREG?"); if(AT_SendCmd(SendData, strlen(SendData)) <0) { printf("Get cell id Failed\n"); AT_ComClose(); return -4; } AT_RecvData(RecvData); printf("getci read:%s\n", RecvData); ptr = strrchr(RecvData, ','); if(ptr == NULL) { AT_ComClose(); return -5; } else strncpy(rdata, ptr+1, buf_len); AT_ComClose(); return 0; } int at_test(char *wdata, char *rdata, int len) { char *tmp; strcpy(rdata, "at_test======"); strcat(rdata, wdata); return len; } atcmd.h: #ifndef _ATCMD_H_ #define _ATCMD_H_ #ifdef __cplusplus extern "C" { #endif #include #define M_SYNC (0) #define M_ASYNC (1) #pragma comment(lib, "libcomm.lib") /* 串口动态链接库接口*/ _declspec(dllimport) HANDLE SerialOpen(char *name, int type); _declspec(dllimport) int SerialSet(HANDLE fd, int rate); _declspec(dllimport) int SerialSend(HANDLE fd, char *data, int len, int method); _declspec(dllimport) int SerialSendWithTimeout(HANDLE fd, char *data, int timeout); _declspec(dllimport) int SerialRecv(HANDLE fd, char *data, int method); _declspec(dllimport) int SerialRecvWithTimeout(HANDLE fd, char *data, int timeout); _declspec(dllimport) int SerialClose(HANDLE fd); /* AT 指令对外接口*/ _declspec(dllexport) AT_ComConfig(char *name, int rate); _declspec(dllexport) AT_ApnConfig(char *apn); _declspec(dllexport) AT_SendSMS(char *phonenum, char *msg, int len); _declspec(dllexport) AT_GetFlux(char *rdata, int buf_len); _declspec(dllexport) AT_GetCi(char *rdata, int buf_len); _declspec(dllexport) at_test(char *wdata, char *rdata, int len); #ifdef __cplusplus } #endif #endif 以上代码在实际项目中编译通过。