/dev (macOS 10.13) : CP2102 device unlisted

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So, I'm using the ESP32 board with Silicon Labs CP2102 controller which, when connected to my MacBook, fetches the details about the device using the command system_profiler SPUSBDataType. The issue here is that it is not listed in /dev as a VSP so communication isn't possible with it.

    CP2102 USB to UART Bridge Controller:

      Product ID: 0xea60
      Vendor ID: 0x10c4  (Silicon Laboratories, Inc.)
      Version: 1.00
      Serial Number: 0001
      Speed: Up to 12 Mb/sec
      Manufacturer: Silicon Labs
      Location ID: 0x14200000 / 5
      Current Available (mA): 500
      Current Required (mA): 100
      Extra Operating Current (mA): 0

The driver I'm using is downloaded from https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers.

Any ideas how to make it visible in /dev?

Jan 31 in IoT (Internet of Things) by Upasana
• 7,600 points
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1 answer to this question.

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You may try the following steps: 

  1. Navigate to System Preferences > Security & Privacy
  2. In the bottom of the window, you will see a message System software from developer "SiLabs" was blocked from loading."
  3. Click on the Allow button
  4. Restart Mac

Now your device is listed as /dev/cu.SLAB_USBtoUART.

Good Luck.

answered Jan 31 by Shubham
• 12,230 points

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