Arduino DUE as a FTDI programmer

Hardware Arduino Due
1

Hi,

I want to use Arduino DUE board as a FTDI programmer.

The task is to program ESP32 module which is connected to the Arduino Serial port.

I can use only DUE Native port. There is no DUE programming port in my design.

Thank you very much.

2

Which ESP32 module?
Exactly how is it connected to the Due?

3

I'm using ESP32-WROOM-32 module.

Here is my code uploaded to the DUE:

void setup() {
// put your setup code here, to run once:
Serial3.begin(115200);
SerialUSB.begin(115200);
pinMode(50, OUTPUT);
pinMode(52, OUTPUT);
digitalWrite(50, LOW);
digitalWrite(52, LOW); // LOW ESP32 program
delay(1000);
digitalWrite(50, HIGH); // ESP32 EN on
delay(1000);

}
}

void loop() {
// put your main code here, to run repeatedly:
uint8_t c;

if(Serial3.available()){
c = Serial3.read();
SerialUSB.write(c);
}

if(SerialUSB.available()){
Serial3.write(SerialUSB.read());
}

}

ESP32 module is connected to the DUE serial port.
After programming DUE I select ESP32 Dev Module from the board list and trying to program ESP32 module.

I got the following error:
esptool.py v2.0-dev
Connecting...

A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header
A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header

4

Any luck with this?