Victor Tolosana
ghrh
Diff: GPRS.cpp
- Revision:
- 8:1ee8ba65061a
- Parent:
- 5:ac2342f162fa
- Child:
- 9:2f5445178940
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/GPRS.cpp Tue May 13 14:28:31 2014 +0000
@@ -0,0 +1,332 @@
+/*
+ gprs.cpp
+ 2013 Copyright (c) Seeed Technology Inc. All right reserved.
+
+ Author:lawliet.zou@gmail.com
+ 2013-11-14
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+#include "GPRS.h"
+
+int GPRS::readBuffer(char *buffer,int count)
+{
+ int i = 0;
+ timeCnt.start(); // start timer
+ while(1) {
+ while (gprsSerial.readable()) {
+ char c = gprsSerial.getc();
+ if (c == '\r' || c == '\n') c = '$';
+ buffer[i++] = c;
+ if(i > count)break;
+ }
+ if(i > count)break;
+ if(timeCnt.read() > DEFAULT_TIMEOUT) {
+ timeCnt.stop();
+ timeCnt.reset();
+ break;
+ }
+ }
+ wait(0.5);
+ while(gprsSerial.readable()) { // display the other thing..
+ char c = gprsSerial.getc();
+ }
+ return 0;
+}
+
+void cleanBuffer(char *buffer, int count)
+{
+ for(int i=0; i < count; i++) {
+ buffer[i] = '\0';
+ }
+}
+
+void GPRS::sendCmd(char *cmd)
+{
+ gprsSerial.puts(cmd);
+}
+
+int GPRS::waitForResp(char *resp, int timeout)
+{
+ int len = strlen(resp);
+ int sum=0;
+ timeCnt.start();
+
+ while(1) {
+ if(gprsSerial.readable()) {
+ char c = gprsSerial.getc();
+ sum = (c==resp[sum]) ? sum+1 : 0;
+ if(sum == len)break;
+ }
+ if(timeCnt.read() > timeout) { // time out
+ timeCnt.stop();
+ timeCnt.reset();
+ return -1;
+ }
+ }
+ timeCnt.stop(); // stop timer
+ timeCnt.reset(); // clear timer
+ while(gprsSerial.readable()) { // display the other thing..
+ char c = gprsSerial.getc();
+ }
+
+ return 0;
+}
+
+int GPRS::sendCmdAndWaitForResp(char *cmd, char *resp, int timeout)
+{
+ sendCmd(cmd);
+ return waitForResp(resp,timeout);
+}
+
+int GPRS::init(void)
+{
+ if(0 != checkSIMStatus()) {
+ return -1;
+ }
+ if(checkSignalStrength()<1) {
+ return -1;
+ }
+ if(0 != settingSMS()) {
+ return -1;
+ }
+ return 0;
+}
+
+int GPRS::checkSIMStatus(void)
+{
+ char gprsBuffer[30];
+ int count = 0;
+ cleanBuffer(gprsBuffer,30);
+ while(count < 3) {
+ sendCmd("AT+CPIN?\r\n");
+ readBuffer(gprsBuffer,30);
+ if((NULL != strstr(gprsBuffer,"+CPIN: READY"))) {
+ break;
+ }
+ count++;
+ wait(1);
+ }
+
+ if(count == 3) {
+ return -1;
+ }
+ return 0;
+}
+
+int GPRS::checkSignalStrength(void)
+{
+ char gprsBuffer[100];
+ int index,count = 0;
+ cleanBuffer(gprsBuffer,100);
+ while(count < 3) {
+ sendCmd("AT+CSQ\r\n");
+ readBuffer(gprsBuffer,25);
+ if(sscanf(gprsBuffer, "AT+CSQ$$$$+CSQ: %d", &index)>0) {
+ break;
+ }
+ count++;
+ wait(1);
+ }
+ if(count == 3) {
+ return -1;
+ }
+ return index;
+}
+
+int GPRS::settingSMS(void)
+{
+ if(0 != sendCmdAndWaitForResp("AT+CNMI=2,2\r\n", "OK", DEFAULT_TIMEOUT)) {
+ return -1;
+ }
+ if(0 != sendCmdAndWaitForResp("AT+CMGF=1\r\n", "OK", DEFAULT_TIMEOUT)) {
+ return -1;
+ }
+ return 0;
+}
+
+int GPRS::sendSMS(char *number, char *data)
+{
+ char cmd[64];
+ while(gprsSerial.readable()) {
+ char c = gprsSerial.getc();
+ }
+ snprintf(cmd, sizeof(cmd),"AT+CMGS=\"%s\"\r\n",number);
+ if(0 != sendCmdAndWaitForResp(cmd,">",DEFAULT_TIMEOUT)) {
+ return -1;
+ }
+ wait(1);
+ gprsSerial.puts(data);
+ gprsSerial.putc((char)0x1a);
+ return 0;
+}
+
+int GPRS::readSMS(char *message, int index)
+{
+ int i = 0;
+ char gprsBuffer[100];
+ char *p,*s;
+ gprsSerial.printf("AT+CMGR=%d\r\n",index);
+ cleanBuffer(gprsBuffer,100);
+ readBuffer(gprsBuffer,100);
+ if(NULL == ( s = strstr(gprsBuffer,"+CMGR"))) {
+ return -1;
+ }
+ if(NULL != ( s = strstr(gprsBuffer,"+32"))) {
+ p = s + 6;
+ while((*p != '$')&&(i < SMS_MAX_LENGTH-1)) {
+ message[i++] = *(p++);
+ }
+ message[i] = '\0';
+ }
+ return 0;
+}
+
+int GPRS::deleteSMS(int index)
+{
+ char cmd[32];
+ snprintf(cmd,sizeof(cmd),"AT+CMGD=%d\r\n",index);
+ sendCmd(cmd);
+ return 0;
+}
+
+int GPRS::getSMS(char* message)
+{
+ if(NULL != messageBuffer) {
+ strncpy(message,messageBuffer,SMS_MAX_LENGTH);
+ }
+ return 0;
+}
+
+int GPRS::callUp(char *number)
+{
+ if(0 != sendCmdAndWaitForResp("AT+COLP=1\r\n","OK",5)) {
+ return -1;
+ }
+ wait(1);
+ gprsSerial.printf("\r\nATD%s;\r\n",NULL==number?phoneNumber:number);
+ return 0;
+}
+
+int GPRS::answer(void)
+{
+ gprsSerial.printf("ATA\r\n");
+ return 0;
+}
+
+int GPRS::loopHandle(void)
+{
+ char gprsBuffer[100];
+ int i = 0;
+ char *s = NULL;
+ cleanBuffer(gprsBuffer,100);
+ while(gprsSerial.readable()) {
+ char c = gprsSerial.getc();
+ }
+ wait(1);
+START:
+ while(1) {
+ if(gprsSerial.readable()) {
+ break;
+ }
+ wait(1);
+ }
+ timeCnt.start(); // start timer
+ while(1) {
+ while (gprsSerial.readable()) {
+ char c = gprsSerial.getc();
+ if (c == '\r' || c == '\n') c = '$';
+ gprsBuffer[i] = c;
+ i++;
+ if(i > 100) {
+ i = 0;
+ break;
+ }
+ }
+ if(timeCnt.read() > 5) { // time out
+ timeCnt.stop();
+ timeCnt.reset();
+ break;
+ }
+ }
+ if(NULL != strstr(gprsBuffer,"RING")) {
+ return MESSAGE_RING;
+ } else if(NULL != (s = strstr(gprsBuffer,"+CMT"))) { //SMS: $$+CMTI: "SM",24$$
+ if(NULL != (s = strstr(gprsBuffer,"+32"))) {
+ s += 6;
+ int i = 0;
+ cleanBuffer(messageBuffer,SMS_MAX_LENGTH);
+ while((*s != '$')&&(i < SMS_MAX_LENGTH-1)) {
+ messageBuffer[i++] = *(s++);
+ }
+ messageBuffer[i] = '\0';
+ return MESSAGE_SMS;
+ } else {
+ goto START;
+ }
+ } else {
+ goto START;
+ }
+}
+
+int GPRS::networkInit(char* apn, char* userName, char* passWord)
+{
+ char cstt[64];
+ snprintf(cstt,sizeof(cstt),"AT+CSTT=\"%s\",\"%s\",\"%s\"\r\n",apn,userName,passWord);
+ if(0 != sendCmdAndWaitForResp(cstt, "OK", DEFAULT_TIMEOUT)) {
+ return -1;
+ }
+ return 0;
+}
+
+int GPRS::connectTCP(char *ip, char *port)
+{
+ char cipstart[64];
+#if 0
+ if(0 != sendCmdAndWaitForResp("AT+CSTT=\"CMNET\",\"\",\"\"\r\n", "OK", 5)) {
+ return -1;
+ }
+#endif
+ sprintf(cipstart, "AT+CIPSTART=\"TCP\",\"%s\",\"%s\"\r\n", ip, port);
+ if(0 != sendCmdAndWaitForResp(cipstart, "OK", DEFAULT_TIMEOUT)) {
+ return -1;
+ }
+ return 0;
+}
+int GPRS::sendTCPData(char *data)
+{
+ char cmd[64];
+ int len = strlen(data);
+ snprintf(cmd,sizeof(cmd),"AT+CIPSEND=%d\r\n",len);
+ if(0 != sendCmdAndWaitForResp(cmd,">",DEFAULT_TIMEOUT)) {
+ return -1;
+ }
+ if(0 != sendCmdAndWaitForResp(data,"OK",DEFAULT_TIMEOUT)) {
+ return -1;
+ }
+ return 0;
+}
+
+int GPRS::closeTCP(void)
+{
+ sendCmd("AT+CIPCLOSE\r\n");
+ return 0;
+}
+
+int GPRS::shutTCP(void)
+{
+ sendCmd("AT+CIPSHUT\r\n");
+ return 0;
+}