OpCode Labs Remote Lab

Session · Station –, NUCLEO-F446RE Not connected 45:00

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STM32 Remote Lab

Flash, debug and probe a real NUCLEO-F446RE running Zephyr RTOS, live from your browser. Press the user button, watch LD2 and read the signals on a logic analyzer.

NUCLEO-F446RECortex-M4F, 180 MHz
Zephyr RTOSStarter firmware
ST-LINK · OpenOCDGDB on port 3333
Logic analyzerPA5 · PC13

Get started

Connect to your board

Your slot: today, 45 minutes.

1
Start the session

Reserves the board, reflashes the starter firmware and starts the debug server.

Access code
- Board reserved
- Board reflashed with the clean starter firmware
- Debug server listening on port 3333
- Analyzer connected
2
Open the tunnel from your PC

Pick one. SSH needs nothing extra on Windows 10/11.
```
ssh -N -L 3333:10.8.3.N:3333 student@lab.opcode-labs.com
```
Leave this terminal open during the session. Student accounts are not active yet: this command will work once they are.
```
[Interface]
PrivateKey = <generated for this session>
Address = <assigned for this session>

[Peer]
PublicKey = <lab server key>
Endpoint = lab.opcode-labs.com:51820
AllowedIPs = 10.8.3.N/32
```
Paste into the WireGuard app as a new tunnel. It stops working when the session ends.

3

Debug in STM32CubeIDE

Run › Debug Configurations › your project › Debugger tab.

Debug probe	ST-LINK (OpenOCD)
GDB connection	Connect to remote GDB server
Host name	localhost
Port	3333
Startup tab	Keep “Download” checked

Debug server not started

Hardware

Your board

Camera off

Start the session to see your board.

Buttons

Hold to keep B1 pressed, like a real finger.

Target

State: off

Halt, step and breakpoints happen in CubeIDE.

Activity

Signals

Logic analyzer

Waiting for the session to start.

Trigger on B1 press

D0 PA5LD2 LED

D1 PC13B1 button

LED frequency–

LED duty cycle–

B1 presses–

Cursor–