HC-05_example.cpp

/* HC-05 Serial pass through

The following AT-commands are supported:
  AT-command          Description
  ----------          ----------------------------------
  AT+ROLE             Output the current role (1=master/0=slave)
  AT+UART             Output UART com settings
  AT+UART=115200,0,0  Setup comms to be 115200 baud
  AT+ADDR?            Check device address
  AT+PSWD             Check current connection password
  AT+PSWD:"1234"      Sets connection password to 1234
  AT+NAME?            Check current Bluetooth device name
  AT+NAME:xxx         Sets Bluetooth device name to xxx
  AT+VERSION          Returns the device's version (e.g. "linvorV1")
  AT+RNAME?           Check name of the connected device
  AT+RESET            Reset and exit AT mode
  AT+ORGL             Restore factory settings
  AT+MRAD?            Get the address of the most recent BT device

  Data Mode Baud Rate: 9600, 8, N, 1/* HC-05 Serial pass through

The following AT-commands are supported:
  AT-command          Description
  ----------          ----------------------------------
  AT+ROLE             Output the current role (1=master/0=slave)
  AT+UART             Output UART com settings
  AT+UART=115200,0,0  Setup comms to be 115200 baud
  AT+ADDR?            Check device address
  AT+PSWD             Check current connection password
  AT+PSWD:"1234"      Sets connection password to 1234
  AT+NAME?            Check current Bluetooth device name
  AT+NAME:xxx         Sets Bluetooth device name to xxx
  AT+VERSION          Returns the device's version (e.g. "linvorV1")
  AT+RNAME?           Check name of the connected device
  AT+RESET            Reset and exit AT mode
  AT+ORGL             Restore factory settings
  AT+MRAD?            Get the address of the most recent BT device

  This is our default config:
  AT+NAME:MYTHING   Sets Bluetooth device name to JAINSPECT
  AT+PSWD:"1233"      Sets connection password to 6465
  AT+UART=115200,0,0  Setup comms to be 115200 baud, no parity, 1 stop bit

  Data Mode Baud Rate: 9600, 8, N, 1
  Command Mode Baud Rate: 38400, 8, N, 1
*/

#include <SoftwareSerial.h>
SoftwareSerial mySerial(8, 9);

int counter = 0;
char command[100];

void setup()
{
  delay(500);
  Serial.begin(115200);
  mySerial.begin(115200);
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop()
{
  /* send everything received from the hardware uart to usb serial & vv */
  if (Serial.available() > 0) {
    Serial.print("Sent: ");
    delay(50);
    while( Serial.available() > 0 ){
      char ch = Serial.read();
      Serial.print(ch);
      mySerial.print(ch);
    }
  }
  
  if (mySerial.available() > 0) {
    Serial.print("Received: ");
    delay(50);
    int index = 0;
    while( mySerial.available() ){
      char ch = mySerial.read();
      if( ch ){
        command[index] = ch;
        index++;
      }
    }
    // Terminate string received
    command[index] = '\0';
    Serial.println(command);
  }

  /* Show that we're alive */
  counter++;
  if( counter%50000 == 0 ){
    digitalWrite(LED_BUILTIN,!digitalRead(LED_BUILTIN));
  }
}