├── GPRS_Post_Tests
    └── GPRS_Post_Tests.ino
└── README.md


/GPRS_Post_Tests/GPRS_Post_Tests.ino:
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  1 | #include <SoftwareSerial.h>
  2 | 
  3 | #define DEBUG 1
  4 | #define SIM800_TX_PIN 8
  5 | #define SIM800_RX_PIN 7
  6 | 
  7 | SoftwareSerial serialSIM800(SIM800_TX_PIN,SIM800_RX_PIN);
  8 | char responseBuffer[256];
  9 | 
 10 | char *gprsStart[]     = {
 11 |                           (char *)"AT+SAPBR=3,1,\"Contype\", \"GPRS\"\r\n", // Configure bearer profile
 12 |                           (char *)"AT+SAPBR=3,1,\"APN\",\"internet\"\r\n",
 13 |                           (char *)"AT+SAPBR=1,1\r\n", // Open a GPRS context
 14 |                           (char *)"AT+SAPBR=2,1\r\n" // Query the GPRS context
 15 |                         };
 16 | char *gprsEnd[]       = { (char *)"AT+SAPBR=0,1\r\n" }; // Close a GPRS context
 17 | 
 18 | char *httpStart[]     = {
 19 |                           (char *)"AT+HTTPINIT\r\n", // Init HTTP service
 20 |                           (char *)"AT+HTTPPARA=\"CID\",1\r\n", // Set parameters for HTTP session
 21 |                           (char *)"AT+HTTPPARA=\"URL\",\"83.212.82.144:8888/upload\"\r\n",
 22 |                           (char *)"AT+HTTPPARA=\"CONTENT\",\"image\"\r\n",
 23 |                           (char *)"AT+HTTPDATA=5,10000\r\n", // POST the data, params (size as bytes, input latency time ms)
 24 |                           (char *)"DEBUG", // POST Data
 25 |                           (char *)"AT+HTTPACTION=1\r\n", // POST Session start
 26 |                           (char *)"AT+HTTPREAD\r\n" // Read the data
 27 |                         };
 28 | char *httpEnd[]       = { (char *)"AT+HTTPTERM\r\n" }; // Terminate HTTP Service
 29 | 
 30 | char *locationQuery[] = { (char *)"AT+CIPGSMLOC=1,1\r\n" }; // Base station Location: 1)type = 1, get longitude and latitude
 31 | 
 32 | 
 33 | void setup() {
 34 |   Serial.begin(9600);
 35 |   while(!Serial);
 36 |   serialSIM800.begin(9600);
 37 | 
 38 |   if(DEBUG) Serial.println("SETUP");
 39 |   delay(3000);
 40 |   setGprs();
 41 |   postData();
 42 |   terminateHttp();
 43 |   getLocation();
 44 |   endGprs();
 45 | }
 46 | 
 47 | void loop() {
 48 | 
 49 | }
 50 | 
 51 | void setGprs() {
 52 |   if(DEBUG) Serial.println("setGprs");
 53 |   writeToSim(gprsStart, sizeof(gprsStart)/sizeof(*gprsStart));
 54 | }
 55 | 
 56 | void endGprs() {
 57 |   if(DEBUG) Serial.println("endGprs");
 58 |   writeToSim(gprsEnd, sizeof(gprsEnd)/sizeof(*gprsEnd));
 59 | }
 60 | 
 61 | void postData() { // TODO Insert payload
 62 |   if(DEBUG) Serial.println("postData");
 63 |   writeToSim(httpStart, sizeof(httpStart)/sizeof(*httpStart));
 64 | }
 65 | 
 66 | void terminateHttp() {
 67 |   if(DEBUG) Serial.println("terminateHttp");
 68 |   writeToSim(httpEnd, sizeof(httpEnd)/sizeof(*httpEnd));
 69 | }
 70 | 
 71 | void getLocation() {
 72 |   if(DEBUG) Serial.println("getLocation");
 73 |   writeToSim(locationQuery, sizeof(locationQuery)/sizeof(*locationQuery));
 74 |   // TODO Scanf coordinates from responseBuffer
 75 |   Serial.println(readSim(responseBuffer, 5000));
 76 | }
 77 | 
 78 | void writeToSim(char *commands[], int size) {
 79 |   for(int i = 0; i < size; i++) {
 80 |     serialSIM800.write(commands[i]);
 81 |     if(DEBUG) { Serial.print("Writing: "); Serial.println(commands[i]); }
 82 |     delay(1000);
 83 |   }
 84 | 
 85 |   while(serialSIM800.available()) serialSIM800.read(); // Ignore written commands
 86 | }
 87 | 
 88 | // Read Sim response until timeout
 89 | char* readSim(char* buffer, int timeout) {
 90 |   unsigned long timeStart = millis();
 91 |   int charCount = 0;
 92 | 
 93 |   while(1) {
 94 |     if(serialSIM800.available()) buffer[charCount++] = serialSIM800.read();
 95 | 
 96 |     if(millis() - timeStart > timeout) break;
 97 |   }
 98 |   buffer[charCount++] = 0;
 99 |   return buffer;
100 | }
101 | 


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/README.md:
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1 | # SIM800L-ESP8266
2 | Setup with GPRS and WiFi connectivity
3 | 


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