[SIM800][WIP] Added SIM800 files

examples/SIM800/SIM800_SMS_Send/SIM800_SMS_Send.ino

@@ -0,0 +1,41 @@
+/*
+   RadioLib SIM800 Send SMS Example
+*/
+
+// include the library
+#include <RadioLib.h>
+
+// SIM800 module is in slot A on the shield
+SIM800 gsm = RadioShield.ModuleA;
+
+void setup() {
+  Serial.begin(9600);
+
+  // initialize SIM800 with default settings
+  Serial.print(F("[SIM800] Initializing ... "));
+  // baudrate:  9600 baud
+  // PIN:       "1234"
+  int state = gsm.begin(9600);
+  if (state == ERR_NONE) {
+    Serial.println(F("success!"));
+  } else {
+    Serial.print(F("failed, code "));
+    Serial.println(state);
+    while (true);
+  }
+}
+
+void loop() {
+  // send SMS to number 0123456789
+  Serial.print(F("[SIM800] Sending SMS ... "));
+  int state = gsm.sendSMS("0123456789", "Hello World!");
+  if (state == ERR_NONE) {
+    Serial.println(F("success!"));
+  } else {
+    Serial.print(F("failed, code "));
+    Serial.println(state);
+  }
+
+  // wait 10 seconds before sending again
+  delay(10000);
+}

src/RadioLib.h

@@ -47,6 +47,7 @@
 #include "modules/RFM95.h"
 #include "modules/RFM96.h"
 #include "modules/RFM97.h"
+#include "modules/SIM800.h"
 #include "modules/SX1231.h"
 #include "modules/SX1261.h"
 #include "modules/SX1262.h"

src/modules/SIM800.cpp

@@ -0,0 +1,59 @@
+#include "SIM800.h"
+
+SIM800::SIM800(Module* module) {
+  _mod = module;
+}
+
+int16_t SIM800::begin(long speed, const char* pin) {
+  // set module properties
+  _mod->AtLineFeed = "\r\n";
+  _mod->baudrate = speed;
+  _mod->init(USE_UART, INT_0);
+  
+  // empty UART buffer (garbage data)
+  _mod->ATemptyBuffer();
+  
+  // power on
+  pinMode(_mod->getInt0(), OUTPUT);
+  digitalWrite(_mod->getInt0(), LOW);
+  delay(1000);
+  pinMode(_mod->getInt0(), INPUT);
+  
+  // test AT setup
+  if(!_mod->ATsendCommand("AT")) {
+    return(ERR_AT_FAILED);
+  }
+  
+  // set phone functionality
+  if(!_mod->ATsendCommand("AT+CFUN=1")) {
+    return(ERR_AT_FAILED);
+  }
+  
+  // set SMS message format
+  if(!_mod->ATsendCommand("AT+CMFG=1")) {
+    return(ERR_AT_FAILED);
+  }
+  
+  // set PIN code
+  char cmd[14];
+  strcat(cmd, "AT+CPIN=\"");
+  strcat(cmd, pin);
+  strcat(cmd, "\"");
+  if(!_mod->ATsendCommand(cmd)) {
+    return(ERR_AT_FAILED);
+  }
+  
+  return(ERR_NONE);
+}
+
+void SIM800::shutdown() {
+  // power off
+  pinMode(_mod->getInt0(), OUTPUT);
+  digitalWrite(_mod->getInt0(), LOW);
+  delay(1500);
+  pinMode(_mod->getInt0(), INPUT);
+}
+
+int16_t SIM800::sendSMS(const char* num, const char* msg) {
+
+}

src/modules/SIM800.h

@@ -0,0 +1,20 @@
+#ifndef _RADIOLIB_SIM800_H
+#define _RADIOLIB_SIM800_H
+
+#include "Module.h"
+
+class SIM800 {
+  public:
+    // constructor
+    SIM800(Module* module);
+    
+    // basic methods
+    int16_t begin(long speed, const char* pin = "1234");
+    void shutdown();
+    int16_t sendSMS(const char* num, const char* msg);
+  
+  private:
+    Module* _mod;
+};
+
+#endif