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--- esp:esp32:esp-idf-environment:serialconnection [2026/08/29 11:42] – oscar
+++ esp:esp32:esp-idf-environment:serialconnection [2026/09/08 14:54] (current) – [Connect with Miniterm] oscar
@@ Line 24: / Line 24: @@
   * original ESP32-Devkit-WROOM --> **/dev/ttyUSB0**
   * ESP32-C3 mini --> **/dev/ttyACM0**
+There are 2 methods to figure out the actually used USB port.
-To find out which port is used, run the following command and unplug/plug the ESP32 board:
+==== Method 1: via udevadm ====
+To find out which port is used, run the following command:
   sudo udevadm monitor -u
+Then unplug/plug the ESP32 board (enabling/disabling via Redirect USB device). This changes show the following output. In this case indicating that the used port is /ttyUSB0.
+<code>
+UDEV  [2304.408314] add      /devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb1/1-3 (usb)
-===== Check port on Linux =====
+UDEV  [2304.408372] add      /devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb1/1-3/1-3:1.0 (usb)
+UDEV  [2304.417209] add      /devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb1/1-3/1-3:1.0/ttyUSB0 (usb-serial)
+UDEV  [2304.423267] add      /devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb1/1-3/1-3:1.0/ttyUSB0/tty/ttyUSB0 (tty)
+UDEV  [2304.431423] bind     /devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb1/1-3/1-3:1.0/ttyUSB0 (usb-serial)
+UDEV  [2304.433667] bind     /devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb1/1-3/1-3:1.0 (usb)
+UDEV  [2304.433728] bind     /devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb1/1-3 (usb)
+</code>
+==== Method 2: via /dev/tty ====
 To check the device name for the serial port of your ESP32 board (or external converter dongle), run this command two times, first with the board / dongle unplugged, then with plugged in. The port which appears the second time is the one you need:
@@ Line 41: / Line 49: @@
 ===== Connect with Miniterm =====
-Connect to the ESP with the miniterm that is part of the ESP-IDF installation:
+Connect to the ESP with the miniterm that is part of the ESP-IDF installation.
-  ~/development/esp32/idf-tools/python_env/idf4.2_py3.7_env/bin/miniterm.py /dev/ttyUSB0 115200
+The used terminal emulator is:
+  ~/development/esp32/idf-tools/python_env/idf6.1_py3.13_env/bin/pyserial-miniterm
+Various examples with different ports and speed:
+<code>
+~/development/esp32/idf-tools/python_env/idf6.1_py3.13_env/bin/pyserial-miniterm /dev/ttyUSB0 74880
+~/development/esp32/idf-tools/python_env/idf6.1_py3.13_env/bin/pyserial-miniterm /dev/ttyUSB1 74880
+~/development/esp32/idf-tools/python_env/idf6.1_py3.13_env/bin/pyserial-miniterm /dev/ttyUSB0 115200
+~/development/esp32/idf-tools/python_env/idf6.1_py3.13_env/bin/pyserial-miniterm /dev/ttyUSB1 115200
+</code>