Blynk App Example Code

examples/Blynk_App/Blynk_App.ino

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+// TTGO T-Call pin definitions
+#define MODEM_RST            5
+#define MODEM_PWKEY          4
+#define MODEM_POWER_ON       23
+#define MODEM_TX             27
+#define MODEM_RX             26
+#define I2C_SDA              21
+#define I2C_SCL              22
+
+#define BLYNK_PRINT Serial    
+#define BLYNK_HEARTBEAT 30
+#define TINY_GSM_MODEM_SIM800
+
+#include <TinyGsmClient.h>
+#include <BlynkSimpleSIM800.h>
+
+#include <Wire.h>
+// #include <TinyGsmClient.h>
+#include "utilities.h"
+
+// Set serial for debug console (to the Serial Monitor, default speed 115200)
+#define SerialMon Serial
+
+// Hardware Serial on Mega, Leonardo, Micro
+#define SerialAT Serial1
+
+
+const char apn[]  = "YourAPN";
+const char user[] = "";
+const char pass[] = "";
+
+// You should get Auth Token in the Blynk App.
+// Go to the Project Settings (nut icon).
+const char auth[] = "Auth Token";
+
+TinyGsm modem(SerialAT);
+
+void setup()
+{
+  // Set console baud rate
+  SerialMon.begin(115200);
+  delay(10);
+
+  // Keep power when running from battery
+  Wire.begin(I2C_SDA, I2C_SCL);
+  bool   isOk = setPowerBoostKeepOn(1);
+  SerialMon.println(String("IP5306 KeepOn ") + (isOk ? "OK" : "FAIL"));
+
+  // Set-up modem reset, enable, power pins
+  pinMode(MODEM_PWKEY, OUTPUT);
+  pinMode(MODEM_RST, OUTPUT);
+  pinMode(MODEM_POWER_ON, OUTPUT);
+
+  digitalWrite(MODEM_PWKEY, LOW);
+  digitalWrite(MODEM_RST, HIGH);
+  digitalWrite(MODEM_POWER_ON, HIGH);
+
+  // Set GSM module baud rate and UART pins
+  SerialAT.begin(115200, SERIAL_8N1, MODEM_RX, MODEM_TX);
+  delay(3000);
+
+  // Restart takes quite some time
+  // To skip it, call init() instead of restart()
+  SerialMon.println("Initializing modem...");
+  modem.restart();
+
+  String modemInfo = modem.getModemInfo();
+  SerialMon.print("Modem: ");
+  SerialMon.println(modemInfo);
+
+  // Unlock your SIM card with a PIN
+  //modem.simUnlock("1234");
+
+   SerialMon.print("Waiting for network...");
+  if (!modem.waitForNetwork(240000L)) {
+    SerialMon.println(" fail");
+    delay(10000);
+    return;
+  }
+  SerialMon.println(" OK");
+
+  if (modem.isNetworkConnected()) {
+    SerialMon.println("Network connected");
+  }
+
+  SerialMon.print(F("Connecting to APN: "));
+  SerialMon.print(apn);
+  if (!modem.gprsConnect(apn, user, pass)) {
+    SerialMon.println(" fail");
+    delay(10000);
+    return;
+  }
+  SerialMon.println(" OK");
+
+  Blynk.begin(auth, modem, apn, user, pass);
+}
+
+void loop()
+{
+  Blynk.run();
+}

examples/Blynk_App/utilities.h

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+#define IP5306_ADDR          0x75
+#define IP5306_REG_SYS_CTL0  0x00
+
+bool setPowerBoostKeepOn(int en)
+{
+  Wire.beginTransmission(IP5306_ADDR);
+  Wire.write(IP5306_REG_SYS_CTL0);
+  if (en) {
+    Wire.write(0x37); // Set bit1: 1 enable 0 disable boost keep on
+  } else {
+    Wire.write(0x35); // 0x37 is default reg value
+  }
+  return Wire.endTransmission() == 0;
+}