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Forum Post: Problem with cc2540 usb dongle

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Hi,

I have recently bought a CC2540DK-MINI and I have tried to follow the basics that is described in the user's guide but when I tried to connect the usb dongle to the pc it don't sees it at all.

I have searched some solutions that tell me to flash the hex file CC2540_USBDongle_HostTestRelease_All.hex, but it doesn't seem to make anything. The usb dongle just have a green led and it switch to red and disconnects when I press one of the buttons. I have tried too to flash an old hex file, from version 1.1. With that the pc sees the dongle and I can connect to BTool, but it has always a red led turn on and the data that it shows on BTool isn't correct.

Can someone help me please? Is that some issue from version 1.3?


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