forked from Seeed-Studio/GPRS_SIM900
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GPRS_Shield_Arduino.cpp
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GPRS_Shield_Arduino.cpp
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/*
GPRS_Shield_Arduino.cpp
A library for SeeedStudio seeeduino GPRS shield
Copyright (c) 2015 seeed technology inc.
Website : www.seeed.cc
Author : lawliet zou
Create Time: April 2015
Change Log :
The MIT License (MIT)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#include <stdio.h>
#include "GPRS_Shield_Arduino.h"
GPRS* GPRS::inst = NULL;
GPRS::GPRS(uint8_t tx, uint8_t rx, uint32_t baudRate): gprsSerial(tx, rx) {
inst = this;
sim900_init(&gprsSerial, baudRate);
}
SimStatus GPRS::getSimStatus() {
char gprsBuffer[32];
sim900_clean_buffer(gprsBuffer, 32);
sim900_send_cmd("AT+CPIN?\r\n");
sim900_read_buffer(gprsBuffer, 32, DEFAULT_TIMEOUT);
if (strstr(gprsBuffer, "+CPIN: READY")) {
return SimStatus::READY;
} else if (strstr(gprsBuffer, "+CPIN: SIM PIN")) {
return SimStatus::PIN_REQUIRED;
} else if (strstr(gprsBuffer, "+CPIN: SIM PUK")) {
return SimStatus::PUK_REQUIRED;
} else if (strstr(gprsBuffer, "+CPIN: SIM PIN2")) {
return SimStatus::PIN2_REQUIRED;
} else if (strstr(gprsBuffer, "+CPIN: SIM PUK2")) {
return SimStatus::PUK2_REQUIRED;
} else {
return SimStatus::UNKNOWN; // unknown / not supported status
}
}
bool GPRS::enterPin(const char *pin) {
SimStatus simStatus = getSimStatus();
char grpsBuffer[32];
if (simStatus == SimStatus::PUK_REQUIRED || simStatus == SimStatus::PUK2_REQUIRED) {
DEBUG(F("Status not compatible with pin unlock"));
return false;
}
sim900_send_cmd(F("AT+CPIN=\""));
sim900_send_cmd(pin);
sim900_send_cmd("\"\r\n");
sim900_clean_buffer(grpsBuffer, 32);
sim900_read_buffer(grpsBuffer, 32, DEFAULT_TIMEOUT);
if (!strstr(grpsBuffer, "OK"))
{
DEBUG(F("Failed to unlock sim"));
DEBUG(grpsBuffer);
return false;
}
return true;
}
bool GPRS::initMms(const char *mmsUrl, const char *mmsGw, uint8_t port, const char *apn, MmsValidity validity = MmsValidity::NOT_SET, MmsPriority priority = MmsPriority::NOT_SET) {
char gprsBuffer[32];
if (!sim900_check_with_cmd(F("AT+CMMSINIT\r\n"), "OK", CMD, 10000, 10000)) {
DEBUG(F("Failed to init MMS, but well"));
termMms();
return false;
}
char *cmmsUrlCmd = (char*)calloc(50, sizeof(char));
sprintf(cmmsUrlCmd, "AT+CMMSCURL=\"%s\"\r\n", mmsUrl);
bool successCmmsUrl = sim900_check_with_cmd(cmmsUrlCmd, "OK", CMD);
if (!successCmmsUrl) {
DEBUG(F("Failed to configure MMS url"));
termMms();
return false;
}
if (!sim900_check_with_cmd(F("AT+CMMSCID=1\r\n"), "OK", CMD)) {
DEBUG(F("Failed to set MMSCID"));
termMms();
return false;
}
char *mmsProtoCmd = (char*)calloc(50, sizeof(char));
sprintf(mmsProtoCmd, "AT+CMMSPROTO=\"%s\",%d\r\n", mmsGw, port);
bool successMmsProto = sim900_check_with_cmd(mmsProtoCmd, "OK", CMD);
free(mmsProtoCmd);
if (!successMmsProto) {
DEBUG(F("Failed to set GW and port"));
termMms();
return false;
}
sim900_clean_buffer(gprsBuffer, 32);
char *cMmsSendCfgCmd = (char*)calloc(31, sizeof(char));
sprintf(cMmsSendCfgCmd, "AT+CMMSSENDCFG=%d,%d,0,0,2,4,2,0\r\n", (byte)validity, (byte)priority);
bool successMmsSendCfg = sim900_check_with_cmd(cMmsSendCfgCmd, "OK", CMD);
free(cMmsSendCfgCmd); // free it here, to avoid omission in case of edit of this part
if (!successMmsSendCfg) {
DEBUG(F("Failed to configure send MMS"));
termMms();
return false;
}
if (!sim900_check_with_cmd(F("AT+SAPBR=3,1,\"Contype\",\"GPRS\"\r\n"), "OK", CMD)) {
DEBUG(F("Failed to set Contype"));
termMms();
return false;
}
char *sapbrApnCmd = (char*)calloc(50, sizeof(char));
sprintf(sapbrApnCmd, "AT+SAPBR=3,1,\"APN\",\"%s\"\r\n", apn);
bool successApnCmd = sim900_check_with_cmd(sapbrApnCmd, "OK", CMD);
free(sapbrApnCmd);
if (!successApnCmd) {
DEBUG(F("Failed to set APN"));
termMms();
return false;
}
delay(1000);
if (!sim900_check_with_cmd(F("AT+SAPBR=1,1\r\n"), "OK", CMD, DEFAULT_TIMEOUT, 30000)) {
DEBUG(F("Failed to activate bearer context"));
termMms();
return false;
}
if (!sim900_check_with_cmd(F("AT+SAPBR=2,1\r\n"), "OK", CMD)) {
DEBUG(F("Failed to do SAPBR=2,1"));
termMms();
return false;
}
return true;
}
void GPRS::termMms() {
sim900_send_cmd(F("AT+CMMSTERM\r\n"));
}
bool GPRS::sendMMS(const char *dstNumber, byte (*nextByteFn)(), uint32_t bodySize) {
if (!sim900_check_with_cmd(F("AT+CMMSEDIT=1\r\n"), "OK", CMD)) {
DEBUG(F("Failed to MMSEDIT"));
termMms();
return false;
}
char *mmsDownCmd = (char*)calloc(40, sizeof(char));
sprintf(mmsDownCmd, "AT+CMMSDOWN=\"PIC\",%d,300000\r\n", bodySize);
bool successMmsDownCmd = sim900_check_with_cmd(mmsDownCmd, "CONNECT", CMD);
free(mmsDownCmd);
if (!successMmsDownCmd) {
DEBUG(F("Failed to initiate MMS down"));
termMms();
return false;
}
for (uint32_t byteSent = 0; byteSent < bodySize; byteSent++) {
byte byte = nextByteFn();
sim900_send_byte(byte);
}
if (!sim900_wait_for_resp("OK", CMD)) {
DEBUG(F("Failed to transfer all data"));
termMms();
return false;
}
char *setRecpCmd = (char*)calloc(50, sizeof(char));
sprintf(setRecpCmd, "AT+CMMSRECP=\"%s\"\r\n", dstNumber);
bool successSetRecp = sim900_check_with_cmd(setRecpCmd, "OK", CMD);
free(setRecpCmd);
if (!successSetRecp) {
DEBUG(F("Failed to set recipient"));
termMms();
return false;
}
sim900_send_cmd(F("AT+CMMSVIEW\r\n"));
delay(500);
sim900_flush_serial();
if (!sim900_check_with_cmd(F("AT+CMMSSEND\r\n"), "OK", CMD, 300000, 900000)) {
DEBUG(F("Failed to send MMS"));
termMms();
return false;
}
sim900_send_cmd(F("AT+CMMSEDIT=0\r\n")); // clear current MMS
termMms();
return true;
}
bool GPRS::init(void) {
if (!sim900_check_with_cmd(F("AT\r\n"), "OK\r\n", CMD)) {
return false;
}
if (!sim900_check_with_cmd(F("AT+CMEE=2\r\n"), "OK", CMD)) {
return false;
}
if (!sim900_check_with_cmd(F("AT+CFUN=1\r\n"), "OK\r\n", CMD)) {
return false;
}
//180822 Set SMS to text mode
if (!sim900_check_with_cmd(F("AT+CMGF=1\r\n"), "OK\r\n", CMD)) { // Set message mode to ASCII
return false;
}
//delay(500); It is not necessary, as we have time before next command
// set New Message Indicator
if (!sim900_check_with_cmd(F("AT+CNMI=1,1,0,0,0\r\n"), "OK\r\n", CMD)) { // Set message mode to ASCII
return false;
}
if (!checkSIMStatus()) {
return false;
}
return true;
}
bool GPRS::checkPowerUp(void) {
return sim900_check_with_cmd(F("AT\r\n"), "OK\r\n", CMD);
//We dont need here any pin, as this library has to work also with SIM800L
}
void GPRS::powerUpDown(uint8_t pin) {
// power on pulse for SIM900 Shield
digitalWrite(pin, LOW);
delay(1000);
digitalWrite(pin, HIGH);
delay(2000);
digitalWrite(pin, LOW);
delay(3000);
}
void GPRS::powerReset(uint8_t pin) {
// reset for SIM800L board.
// RST pin has to be OUTPUT, LOW and with a NPN transistor
digitalWrite(pin, HIGH);
delay(1000);
digitalWrite(pin, LOW);
delay(3000);
}
bool GPRS::checkSIMStatus(void) {
char gprsBuffer[32];
int count = 0;
sim900_clean_buffer(gprsBuffer, 32);
while (count < 3) {
sim900_send_cmd(F("AT+CPIN?\r\n"));
sim900_read_buffer(gprsBuffer, 32, DEFAULT_TIMEOUT);
if ((NULL != strstr(gprsBuffer, "+CPIN: READY"))) {
break;
}
count++;
delay(300);
}
if (count == 3) {
return false;
}
return true;
}
bool GPRS::isNetworkRegistered(void) {
char gprsBuffer[32];
int count = 0;
sim900_clean_buffer(gprsBuffer, 32);
while (count < 3) {
sim900_send_cmd(F("AT+CREG?\r\n"));
sim900_read_buffer(gprsBuffer, 32, DEFAULT_TIMEOUT);
//Check if home network (0,1) ir roaming (0,5) is enabled
if ((NULL != strstr(gprsBuffer, "+CREG: 0,1")) || (NULL != strstr(gprsBuffer, "+CREG: 0,5"))) {
break;
}
count++;
delay(300);
}
if (count == 3) {
return false;
}
return true;
}
bool GPRS::sendSMS(const char* number, const char* data) {
//180822 In the init function
//if(!sim900_check_with_cmd(F("AT+CMGF=1\r\n"), "OK\r\n", CMD)) { // Set message mode to ASCII
// return false;
//}
//delay(500);
sim900_flush_serial();
sim900_send_cmd(F("AT+CMGS=\""));
sim900_send_cmd(number);
//sprintf(cmd,"AT+CMGS=\"%s\"\r\n", number);
//snprintf(cmd, sizeof(cmd),"AT+CMGS=\"%s\"\r\n", number);
// if(!sim900_check_with_cmd(cmd,">",CMD)) {
if (!sim900_check_with_cmd(F("\"\r\n"), ">", CMD)) {
return false;
}
delay(1000);
sim900_send_cmd(data);
delay(500);
sim900_send_End_Mark();
return sim900_wait_for_resp("OK\r\n", CMD, 20U, 5000U);
}
char GPRS::isSMSunread() {
char gprsBuffer[48]; //48 is enough to see +CMGL:
char* s;
//List of all UNREAD SMS and DON'T change the SMS UNREAD STATUS
sim900_send_cmd(F("AT+CMGL=\"REC UNREAD\",1\r\n"));
/* If you want to change SMS status to READ you will need to send:
AT+CMGL=\"REC UNREAD\"\r\n
This command will list all UNREAD SMS and change all of them to READ
If there is not SMS, response is (30 chars)
AT+CMGL="REC UNREAD",1 --> 22 + 2
--> 2
OK --> 2 + 2
If there is SMS, response is like (>64 chars)
AT+CMGL="REC UNREAD",1
+CMGL: 9,"REC UNREAD","XXXXXXXXX","","14/10/16,21:40:08+08"
Here SMS text.
OK
or
AT+CMGL="REC UNREAD",1
+CMGL: 9,"REC UNREAD","XXXXXXXXX","","14/10/16,21:40:08+08"
Here SMS text.
+CMGL: 10,"REC UNREAD","YYYYYYYYY","","14/10/16,21:40:08+08"
Here second SMS
OK
*/
sim900_clean_buffer(gprsBuffer, 31);
sim900_read_buffer(gprsBuffer, 30, DEFAULT_TIMEOUT);
//Serial.print("Buffer isSMSunread: ");Serial.println(gprsBuffer);
if (NULL != (s = strstr(gprsBuffer, "OK"))) {
//In 30 bytes "doesn't" fit whole +CMGL: response, if recieve only "OK"
// means you don't have any UNREAD SMS
delay(50);
return 0;
} else {
//More buffer to read
//We are going to flush serial data until OK is recieved
sim900_wait_for_resp("OK\r\n", CMD);
//sim900_flush_serial();
//We have to call command again
sim900_send_cmd(F("AT+CMGL=\"REC UNREAD\",1\r\n"));
sim900_clean_buffer(gprsBuffer, 48);
sim900_read_buffer(gprsBuffer, 47, DEFAULT_TIMEOUT);
//Serial.print("Buffer isSMSunread 2: ");Serial.println(gprsBuffer);
if (NULL != (s = strstr(gprsBuffer, "+CMGL:"))) {
//There is at least one UNREAD SMS, get index/position
s = strstr(gprsBuffer, ":");
if (s != NULL) {
//We are going to flush serial data until OK is recieved
sim900_wait_for_resp("OK\r\n", CMD);
return atoi(s + 1);
}
} else {
return -1;
}
}
return -1;
}
bool GPRS::readSMS(int messageIndex, char* message, int length, char* phone, char* datetime) {
/* Response is like:
AT+CMGR=2
+CMGR: "REC READ","XXXXXXXXXXX","","14/10/09,17:30:17+08"
SMS text here
So we need (more or lees), 80 chars plus expected message length in buffer. CAUTION FREE MEMORY
*/
int i = 0;
char gprsBuffer[80 + length];
//char cmd[16];
char num[4];
char* p, *p2, *s;
//180822 In the init function
//if(!sim900_check_with_cmd(F("AT+CMGF=1\r\n"), "OK\r\n", CMD)) { // Set message mode to ASCII
// return false;
//}
//delay(1000);
//sprintf(cmd,"AT+CMGR=%d\r\n",messageIndex);
//sim900_send_cmd(cmd);
sim900_send_cmd(F("AT+CMGR="));
itoa(messageIndex, num, 10);
sim900_send_cmd(num);
sim900_send_cmd(F("\r\n"));
sim900_clean_buffer(gprsBuffer, sizeof(gprsBuffer));
sim900_read_buffer(gprsBuffer, sizeof(gprsBuffer));
if (NULL != (s = strstr(gprsBuffer, "+CMGR:"))) {
// Extract phone number string
p = strstr(s, ",");
p2 = p + 2; //We are in the first phone number character
p = strstr((char*)(p2), "\"");
if (NULL != p) {
i = 0;
while (p2 < p) {
phone[i++] = *(p2++);
}
phone[i] = '\0';
}
// Extract date time string
p = strstr((char*)(p2), ",");
p2 = p + 1;
p = strstr((char*)(p2), ",");
p2 = p + 2; //We are in the first date time character
p = strstr((char*)(p2), "\"");
if (NULL != p) {
i = 0;
while (p2 < p) {
datetime[i++] = *(p2++);
}
datetime[i] = '\0';
}
if (NULL != (s = strstr(s, "\r\n"))) {
i = 0;
p = s + 2;
while ((*p != '\r') && (i < length - 1)) {
message[i++] = *(p++);
}
message[i] = '\0';
}
return true;
}
return false;
}
bool GPRS::readSMS(int messageIndex, char* message, int length) {
int i = 0;
char gprsBuffer[100];
//char cmd[16];
char num[4];
char* p, *s;
//180822 In the init function
//if(!sim900_check_with_cmd(F("AT+CMGF=1\r\n"), "OK\r\n", CMD)) { // Set message mode to ASCII
// return false;
//}
//delay(1000);
sim900_send_cmd(F("AT+CMGR="));
itoa(messageIndex, num, 10);
sim900_send_cmd(num);
sim900_send_cmd(F("\r\n"));
// sprintf(cmd,"AT+CMGR=%d\r\n",messageIndex);
// sim900_send_cmd(cmd);
sim900_clean_buffer(gprsBuffer, sizeof(gprsBuffer));
sim900_read_buffer(gprsBuffer, sizeof(gprsBuffer), DEFAULT_TIMEOUT);
if (NULL != (s = strstr(gprsBuffer, "+CMGR:"))) {
if (NULL != (s = strstr(s, "\r\n"))) {
p = s + 2;
while ((*p != '\r') && (i < length - 1)) {
message[i++] = *(p++);
}
message[i] = '\0';
return true;
}
}
return false;
}
bool GPRS::deleteSMS(int index) {
//char cmd[16];
char num[4];
//sprintf(cmd,"AT+CMGD=%d\r\n",index);
sim900_send_cmd(F("AT+CMGD="));
itoa(index, num, 10);
sim900_send_cmd(num);
//snprintf(cmd,sizeof(cmd),"AT+CMGD=%d\r\n",index);
//sim900_send_cmd(cmd);
//return 0;
// We have to wait OK response
//return sim900_check_with_cmd(cmd,"OK\r\n",CMD);
return sim900_check_with_cmd(F("\r"), "OK\r\n", CMD);
}
bool GPRS::callUp(char* number) {
//char cmd[24];
if (!sim900_check_with_cmd(F("AT+COLP=1\r\n"), "OK\r\n", CMD)) {
return false;
}
delay(1000);
//HACERR quitar SPRINTF para ahorar memoria ???
//sprintf(cmd,"ATD%s;\r\n", number);
//sim900_send_cmd(cmd);
sim900_send_cmd(F("ATD"));
sim900_send_cmd(number);
sim900_send_cmd(F(";\r\n"));
return true;
}
bool GPRS::answer(void) {
return sim900_check_with_cmd(F("ATA\r\n"), "OK\r\n", CMD);
}
bool GPRS::hangup(void) {
return sim900_check_with_cmd(F("ATH\r\n"), "OK\r\n", CMD);
}
bool GPRS::disableCLIPring(void) {
return sim900_check_with_cmd(F("AT+CLIP=0\r\n"), "OK\r\n", CMD);
}
bool GPRS::getSubscriberNumber(char* number) {
//AT+CNUM --> 7 + CR = 8
//+CNUM: "","+628157933874",145,7,4 --> CRLF + 45 + CRLF = 49
// -->
//OK --> CRLF + 2 + CRLF = 6
byte i = 0;
char gprsBuffer[65];
char* p, *s;
sim900_flush_serial();
sim900_send_cmd(F("AT+CNUM\r\n"));
sim900_clean_buffer(gprsBuffer, 65);
sim900_read_buffer(gprsBuffer, 65, DEFAULT_TIMEOUT);
//Serial.print(gprsBuffer);
if (NULL != (s = strstr(gprsBuffer, "+CNUM:"))) {
s = strstr((char*)(s), ",");
s = s + 2; //We are in the first phone number character
p = strstr((char*)(s), "\""); //p is last character """
if (NULL != s) {
i = 0;
while (s < p) {
number[i++] = *(s++);
}
number[i] = '\0';
}
return true;
}
return false;
}
bool GPRS::isCallActive(char* number) {
char gprsBuffer[64]; //46 is enough to see +CPAS: and CLCC:
char* p, *s;
int i = 0;
sim900_send_cmd(F("AT+CPAS\r\n"));
/* Result code:
0: ready
2: unknown
3: ringing
4: call in progress
AT+CPAS --> 7 + 2 = 9 chars
--> 2 char
+CPAS: 3 --> 8 + 2 = 10 chars
--> 2 char
OK --> 2 + 2 = 4 chars
AT+CPAS
+CPAS: 0
OK
*/
sim900_clean_buffer(gprsBuffer, 64);
sim900_read_string_until(gprsBuffer, 64, "OK", 2);
if (NULL != (s = strstr(gprsBuffer, "+CPAS:"))) {
s = s + 7;
if (*s != '0') {
//There is something "running" (but number 2 that is unknow)
if (*s != '2') {
//3 or 4, let's go to check for the number
delay(5);
sim900_send_cmd(F("AT+CLCC\r\n"));
/*
AT+CLCC --> 9
+CLCC: 1,1,4,0,0,"656783741",161,""
OK
Without ringing:
AT+CLCC
OK
*/
sim900_clean_buffer(gprsBuffer, 64);
sim900_read_string_until(gprsBuffer, 64, "OK", 2);
if (NULL != (s = strstr(gprsBuffer, "+CLCC:"))) {
//There is at least one CALL ACTIVE, get number
s = strstr((char*)(s), "\"");
s = s + 1; //We are in the first phone number character
p = strstr((char*)(s), "\""); //p is last character """
if (NULL != s) {
i = 0;
while (s < p) {
number[i++] = *(s++);
}
number[i] = '\0';
}
} else {
return false;
}
return true;
}
}
}
return false;
}
bool GPRS::getDateTime(char* buffer) {
//If it doesn't work may be for two reasons:
// 1. Your carrier doesn't give that information
// 2. You have to configurate the SIM900 IC.
// - First with SIM900_Serial_Debug example try this AT command: AT+CLTS?
// - If response is 0, then it is disabled.
// - Enable it by: AT+CLTS=1
// - Now you have to save this config to EEPROM memory of SIM900 IC by: AT&W
// - Now, you have to power down and power up again the SIM900
// - Try now again: AT+CCLK?
// - It should work
//AT+CCLK? --> 8 + CR = 9
//+CCLK: "14/11/13,21:14:41+04" --> CRLF + 29+ CRLF = 33
//
//OK --> CRLF + 2 + CRLF = 6
byte i = 0;
char gprsBuffer[50];
char* p, *s;
sim900_flush_serial();
sim900_send_cmd(F("AT+CCLK?\r"));
sim900_clean_buffer(gprsBuffer, 50);
sim900_read_string_until(gprsBuffer, sizeof(gprsBuffer), "OK\r\n");
if (NULL != (s = strstr(gprsBuffer, "+CCLK:"))) {
s = strstr((char*)(s), "\"");
s = s + 1; //We are in the first phone number character
p = strstr((char*)(s), "\""); //p is last character """
if (NULL != s) {
i = 0;
while (s < p) {
buffer[i++] = *(s++);
}
buffer[i] = '\0';
}
return true;
}
return false;
}
bool GPRS::getVcc(char* buffer) {
//AT+CBC --> 6 + CR
//+CBC: 0,100,4241 --> CRLF + 16 + CRLF
//
//OK --> CRLF + 2 + CRLF
byte i = 0;
char gprsBuffer[50];
char* p, *s;
sim900_flush_serial();
sim900_send_cmd(F("AT+CBC\r"));
sim900_clean_buffer(gprsBuffer, 50);
sim900_read_buffer(gprsBuffer, 50, DEFAULT_TIMEOUT);
if (NULL != (s = strstr(gprsBuffer, "+CBC:"))) {
s = strstr((char*)(s), ",");
s = s + 1;
s = strstr((char*)(s), ",");
s = s + 1; //We are in the first Vcc character
p = s + 4; //p is last character
if (NULL != s) {
i = 0;
while (s < p) {
buffer[i++] = *(s++);
}
buffer[i] = '\0';
}
return true;
}
return false;
}
bool GPRS::getSignalStrength(int* buffer) {
//AT+CSQ --> 6 + CR = 10
//+CSQ: <rssi>,<ber> --> CRLF + 5 + CRLF = 9
//OK --> CRLF + 2 + CRLF = 6
byte i = 0;
char gprsBuffer[26];
char* p, *s;
char buffers[4];
sim900_flush_serial();
sim900_send_cmd(F("AT+CSQ\r"));
sim900_clean_buffer(gprsBuffer, 26);
sim900_read_buffer(gprsBuffer, 26, DEFAULT_TIMEOUT);
if (NULL != (s = strstr(gprsBuffer, "+CSQ:"))) {
s = strstr((char*)(s), " ");
s = s + 1; //We are in the first phone number character
p = strstr((char*)(s), ","); //p is last character """
if (NULL != s) {
i = 0;
while (s < p) {
buffers[i++] = *(s++);
}
buffers[i] = '\0';
}
*buffer = atoi(buffers);
return true;
}
return false;
}
bool GPRS::sendUSSDSynchronous(char* ussdCommand, char* resultcode, char* response) {
//AT+CUSD=1,"{command}"
//OK
//
//+CUSD:1,"{response}",{int}
byte i = 0;
char gprsBuffer[200];
char* p, *s;
sim900_clean_buffer(response, sizeof(response));
sim900_flush_serial();
sim900_send_cmd(F("AT+CUSD=1,\""));
sim900_send_cmd(ussdCommand);
sim900_send_cmd(F("\"\r"));
if (!sim900_wait_for_resp("OK\r\n", CMD)) {
return false;
}
sim900_clean_buffer(gprsBuffer, 200);
sim900_read_buffer(gprsBuffer, 200, DEFAULT_TIMEOUT);
if (NULL != (s = strstr(gprsBuffer, "+CUSD: "))) {
*resultcode = *(s + 7);
resultcode[1] = '\0';
if (!('0' <= *resultcode && *resultcode <= '2')) {
return false;
}
s = strstr(s, "\"");
s = s + 1; //We are in the first phone number character
p = strstr(s, "\""); //p is last character """
if (NULL != s) {
i = 0;
while (s < p) {
response[i++] = *(s++);
}
response[i] = '\0';
}
return true;
}
return false;
}
bool GPRS::cancelUSSDSession(void) {
return sim900_check_with_cmd(F("AT+CUSD=2\r\n"), "OK\r\n", CMD);
}
bool GPRS::getBookEntry(int index, char* number, int* type, char* name) {
//AT+GPBR=? => +CPBR:(1-250),40,17 +CPBR: (range phone book),number length, name length
static const int numMax = 40;
static const int nameMax = 17;
char gprsBuffer[100];
char tmp[4];
sim900_send_cmd(F("AT+CPBR="));
itoa(index, tmp, 10);
sim900_send_cmd(tmp);
sim900_send_cmd(F("\r\n"));
sim900_clean_buffer(gprsBuffer, sizeof(gprsBuffer));
sim900_read_buffer(gprsBuffer, sizeof(gprsBuffer), DEFAULT_TIMEOUT);
//+CPBR: <index>,<number>,<type>,<text>
char* beg, *end, *idx, *num, *typ;
if (NULL == (beg = strstr(gprsBuffer, "+CPBR: "))) {
return false;
}
if (NULL == (end = strstr(beg, "\r\n"))) {
return false;
}
if (NULL == (idx = strchr(beg, ','))) {
return false;
}
strncpy(tmp, beg + 7, (idx - (beg + 7)) <= 3 ? (idx - (beg + 7)) : 3);
tmp[(idx - (beg + 7)) <= 3 ? (idx - (beg + 7)) : 3] = '\0';
if (strtol(tmp, NULL, 10) != index) {
return false;
}
if (NULL == (num = strchr(idx + 1, ','))) {
return false;
}
strncpy(number, idx + 2, (num - (idx + 3)) <= numMax ? (num - (idx + 3)) :
numMax); // We also remove " from the number so we increment idx
number[(num - (idx + 3)) <= numMax ? (num - (idx + 3)) : numMax] = '\0';
if (NULL == (typ = strchr(num + 1, ','))) {
return false;
}
strncpy(tmp, num + 1, (typ - (num + 1)) <= 3 ? (typ - (num + 1)) : 3);
tmp[(typ - (num + 1)) <= 3 ? (typ - (num + 1)) : 3] = '\0';
if (strtol(tmp, NULL, 10) == 0) {
return false;
} else {
*type = strtol(tmp, NULL, 10);
}
strncpy(name, typ + 2, (end - (typ + 3)) <= nameMax ? (end - (typ + 3)) :
nameMax); // We also remove " from the name so we increment typ
name[(end - (typ + 3)) <= nameMax ? (end - (typ + 3)) : nameMax] = '\0';
return true;
}
bool GPRS::delBookEntry(int index) {
char indexStr[4];
itoa(index, indexStr, 10);
sim900_flush_serial();
sim900_send_cmd(F("AT+CPBW="));
sim900_send_cmd(indexStr);
return sim900_check_with_cmd(F("\r"), "OK\r\n", CMD);
}
bool GPRS::addBookEntry(int index, const char* number, int type, const char* name) {
char num[4];
sim900_send_cmd(F("AT+CPBW="));
if (index != -1) {
itoa(index, num, 10);
sim900_send_cmd(num);
}
sim900_send_cmd(F(",\""));
sim900_send_cmd(number);
sim900_send_cmd(F("\","));
itoa(type, num, 10);
sim900_send_cmd(num);
sim900_send_cmd(F(",\""));
sim900_send_cmd(name);
sim900_send_cmd(F("\""));
return sim900_check_with_cmd(F("\r"), "OK\r\n", CMD);
}
bool GPRS::sleep(void) {
return sim900_check_with_cmd(F("AT+CSCLK=2\r\n"), "OK\r\n", CMD);
}
bool GPRS::wake(void) {
unsigned long timerStart;
bool ok = false;
//First, send AT dummy command to wake up
sim900_send_cmd(F("AT\r\n"));
//Second delay almost 100 ms
delay(200);
sim900_flush_serial();
//Third, send the second AT command to check that it is alive
timerStart = millis();
while (!ok && ((unsigned long)(millis() - timerStart) < 3000UL)) { //Until 3 seconds maximum
ok = sim900_check_with_cmd(F("AT\r\n"), "OK", CMD);
delay(300);
}
if (ok) {
//Four, exit sleep mode
return sim900_check_with_cmd(F("AT+CSCLK=0\r\n"), "OK", CMD);
} else {
return false;
}
}
//Here is where we ask for APN configuration, with F() so we can save MEMORY
bool GPRS::join(const __FlashStringHelper* apn, const __FlashStringHelper* userName,
const __FlashStringHelper* passWord) {
byte i;
char* p, *s;
char ipAddr[32];
//Select multiple connection
//sim900_check_with_cmd("AT+CIPMUX=1\r\n","OK",DEFAULT_TIMEOUT,CMD);
//set APN. OLD VERSION
//snprintf(cmd,sizeof(cmd),"AT+CSTT=\"%s\",\"%s\",\"%s\"\r\n",_apn,_userName,_passWord);
//sim900_check_with_cmd(cmd, "OK\r\n", DEFAULT_TIMEOUT,CMD);
//It is the user who need to call gprs.close and gprs.disconnect
//sim900_check_with_cmd("AT+CIPSHUT\r\n", "SHUT OK\r\n", CMD, 2000, 1000); /**Reset the IP session if any**/
sim900_send_cmd(F("AT+CSTT=\""));
if (apn) {
sim900_send_cmd(apn);
}
sim900_send_cmd(F("\",\""));
if (userName) {
sim900_send_cmd(userName);
}
sim900_send_cmd(F("\",\""));
if (passWord) {
sim900_send_cmd(passWord);
}
if (!sim900_check_with_cmd(F("\"\r\n"), "OK\r\n", CMD)) {
return false;
}
//Brings up wireless connection
if (!sim900_check_with_cmd(F("AT+CIICR\r\n"), "OK\r\n", CMD)) {
return false;
}
//Get local IP address
sim900_send_cmd(F("AT+CIFSR\r\n"));
sim900_clean_buffer(ipAddr, 32);
sim900_read_buffer(ipAddr, 32);
//Response:
//AT+CIFSR\r\n --> 8 + 2
//\r\n --> 0 + 2
//10.160.57.120\r\n --> 15 + 2 (max) : TOTAL: 29
//Response error:
//AT+CIFSR\r\n
//\r\n
//ERROR\r\n
if (NULL != strstr(ipAddr, "ERROR")) {
return false;
}
s = ipAddr + 11;
p = strstr((char*)(s), "\r\n"); //p is last character \r\n
if (NULL != s) {
i = 0;
while (s < p) {
ip_string[i++] = *(s++);
}
ip_string[i] = '\0';
}
_ip = str_to_ip(ip_string);
if (_ip != 0) {
return true;
}
return false;
}
void GPRS::disconnect() {
sim900_check_with_cmd(F("AT+CIPSHUT\r\n"), "SHUT OK\r\n", CMD);
}
bool GPRS::connect(Protocol ptl, const char* host, int port, int timeout, int chartimeout) {
//char cmd[64];
char num[4];
char resp[96];
//sim900_clean_buffer(cmd,64);
if (ptl == TCP) {