bluetooth serial port access on raspberry pi 3b

Hi, I created a sample bluetooth controlled led using piduino library. Below is the code is executed. How can I include rfcomm in the below code ? I am able to run the code, but not able to control the LED using android via bluetooth.

#include <Piduino.h>

int led = 21;
int data = 0;

void setup()

{

pinMode(led, OUTPUT);
Serial.begin(9600);

}

void loop()
{

data = Serial.read();
if(data == '1')
{
digitalWrite(led, HIGH);
}

if(data == '0')
{
digitalWrite(led, LOW);
}

}

[epsilonrt]

I think that a test is missing if Serial.available (), but it should still work because the read () function is non-blocking and returns -1 if nothing is available.
Are you sure you have configured the serial port correctly (by default it is used to display kernel messages):
https://www.raspberrypi.org/documentation/configuration/uart.md
The first thing to do is to watch with minicom if you receive the serial port information ...
With Codelite you can put a breakpoint and see what your program does.
Could you copy me the result of pinfo?

Here is my pinfo result

Name : RaspberryPi 3B
Family : RaspberryPi
Database Id : 27
Manufacturer : Sony
Board Revision : 0xa02082
SoC : Bcm2710 (Broadcom)
Memory : 1024MB
GPIO Id : 3
PCB Revision : 1.2
Serial Ports : /dev/ttyAMA0

Yes, I removed the console=serial0,115200 from my cmdline.txt file but still I was not able to send data to my pi with android.

instead of Serial.begin() can i use the rfcomm in the code ? If yes, how ?

I want to use RPi 3 bluetooth to receive data instead of using a HC-05. And from what I know is, Serial.read() is used to receive data from a serial bluetooth device like HC-05. How can I use my rfcomm port to receive data using Piduino library ?

[epsilonrt]

Okay,
Do characters appear in minicom?
minicom -b9600 -D /dev/ttyAMA0

I haven't checked minicom, but I connect my android to rfcomm and I executed cat /dev/rfcomm0, I saw characters

How can I open rfcomm in arduino code instead of Serial.read() ?

[epsilonrt]

Can you confirm that the characters are coming to /dev/ttyAMA0 ? Serial is by default connected to ttyAMA0 ...

[epsilonrt]

As long as you do not confirm that the characters are displayed in minicom on the raspberry pi, we can not progress ...

Should I change any commands in cmdline.txt and config.txt to make minicom work properly ?

Do I need any serial adapter or can I use my HC-05 module ?

[epsilonrt]

Could you explain to me clearly what are the raspberry pi UART0_TXD and UART0_RXD pins connected to?

[epsilonrt]

That's the result of

ASCIIPing on a Raspberry Pi 3 (same model as yours). Piduino works very well.

[epsilonrt]

Sur le raspberry pi 3, UART0 est utilisé par défaut pour le bluetooth pour le désactiver il faut avoir ça dans /boot/config.txt :

#enable_uart=1
dtoverlay=pi3-disable-bt

No, I want to communicate via raspberry pi bluetooth