unable to detect my devices in the pc tool and sometimes displaying as “unknown devices”.

This could happen for multiple reasons – like the device drivers are not installed properly or USB/UART issues on the PC used for this evaluation demonstration.

Please go through the following list to make sure you have the correct setup from the beginning:

• Check the drivers for the USB-SWD/UART-EMUZ board are installed properly for the PC to detect the hardware.
• The drivers for USB-SWD/UART-EMUZ boards are available in the CD/USB stick that comes with the kit or can be downloaded from the links provided in the “AD6LoWPAN-All-in-One-GettingStartedGuide” document. (“Things to Acquire before Starting” section). Install these drivers and reconnect the board. Make sure the USB is detected (by checking the device with PC device manager).
• Make sure the node is not connected to any other tools (teraterm or any other serial communication tool).
• Check the UART status section in Monitor and Control window if it show any of the following errors please restart the ADWSN_UI tool.
  • UART_ERR_OPEN
  • UART_ERR_WRITE
  • UART_PACKET_LOST

Devices may be detected as “unknown devices” due to UART communication error also. Click “Find Devices” again or power cycle/reset the boards (that are connected to the ADWSN-UI-Tool) and try again.