Connect the simulator to a serial port on your computer

[jflamy]

The serial device is currently unsupported and undocumented.

Opening the serial device opens a webserial connection in Chrome (or Edge). This allows a program running com0com version 2.2 on Windows, or socat on a Mac to connect to the device.

One use for this is Firmata, which is a protocol used by several libraries. The Firmata firmare is loaded once on the board. A driver program is written in JavaScript, Java, Python whatever language, and talks Firmata to the Arduino.

It would be very nice if it could be supported.

[urish]

Thanks! Opened this for voting

[urish]

This one got popular really fast - 210 votes in a day!

[drf5n]

Is it the one in

https://wokwi.com/projects/306534287811805760

with this json:

{
  "version": 1,
  "author": "Uri Shaked",
  "editor": "wokwi",
  "parts": [
    {
      "type": "wokwi-arduino-uno",
      "id": "uno",
      "top": 0,
      "left": 0,
      "attrs": {}
    },
    {
      "id": "serial",
      "type": "wokwi-serial-port",
      "attrs": { "baud": "115200" }
    }
  ],
  "connections": [
    ["$serialMonitor:RX", "serial:TX", ""],
    ["$serialMonitor:TX", "serial:RX", ""]
  ],
  "serialMonitor": {
    "display": "always"
  }
}

[urish]

Yes

[rvxfahim]

I am trying to use this project, I can receive from my computer to the serial monitor (mcu) but sending Serial.println commands doesn't come to my serial monitor in the computer. Using com0com for redirecting com8 <>com7 simulator connects to com8 pc connects to com7

p.s com0com works fine with a offline simulator like Proteus.

[dqj999]

I am trying to use this project, I can receive from my computer to the serial monitor (mcu) but sending Serial.println commands doesn't come to my serial monitor in the computer. Using com0com for redirecting com8 <>com7 simulator connects to com8 pc connects to com7

Ditto here - how can you output from the simulation to com0com?

[rvxfahim]

I am trying to use this project, I can receive from my computer to the serial monitor (mcu) but sending Serial.println commands doesn't come to my serial monitor in the computer. Using com0com for redirecting com8 <>com7 simulator connects to com8 pc connects to com7

Ditto here - how can you output from the simulation to com0com?

com0com installs 2 virtual serial ports in windows, in this case it is com 8 and com 7. the wokwi simulator, when it wants to connect to a serial port in windows will ask chrome and chrome pops up a dialog box with available serial ports in my computer including the virtual serial ports installed by com0com. Hence, the idea is to connect wokwi with com 8 using chrome. Then you can connect to virtual com 7 using hterm/realterm and receive what wokwi is sending through com 8, you can also send anything through com 7 using hterm/realterm and wokwi should receive it from com 8.

[egikaza]

Hi all, The same with VCP ports COMx<=>COMy when connected to TERMITE serial.read and print - not working. Is it possible to read/write to/from serial port data in simulator from/to VCP port PC without SerialMonitor? Many thanks for help and answer?

[PtrTella]

Hi, is it possible to upload directly an hex file (like compiled prooject on ArduinoIDE or better PlatformIO), using serial and com0com like in offline simulator? i would be amazing

[drf5n]

Hi, is it possible to upload directly an hex file (like compiled prooject on ArduinoIDE or better PlatformIO), using serial and com0com like in offline simulator? i would be amazing

This thread is more about connecting code running in the simulator to serial in the outside world. But within the online simulator there's a "F1 / Upload Firmware and Start Simulation."

[egikaza]

Hi, I implemented Homeduino protocol on simulator https://wokwi.com/projects/376047882939385857 it works from SerialMonitor at Simulator from web page. I need to have serial connection to simulator from my pc via VCP port using any terminal application (without internal serialmonitor). Is it possible, who knows?

[markaren]

I am trying to use this project, I can receive from my computer to the serial monitor (mcu) but sending Serial.println commands doesn't come to my serial monitor in the computer. Using com0com for redirecting com8 <>com7 simulator connects to com8 pc connects to com7

Ditto here - how can you output from the simulation to com0com?

Has anyone been able to get reading serial output from wokwi to work? I am able to let Wokwi recieive input, but not the other way around. I'm using com0com.

EDIT: Found some info on discord and added

 [ "uno:1", "serial:RX", "", [] ],
 [ "uno:0", "serial:TX", "", [] ],

to connections. Then it worked. This is awsome! I can control my visualisation based on either a real Arduino or a virtual one!

[gsingh93]

Has anyone gotten this working with virtual serial ports with socat or any other tool on macOS or Linux? I can create the ports just fine (socat -d -d pty,raw,echo=0 pty,raw,echo=0), but they don't show up when Chrome asks for a serial port.