unable to enumerate USB device ?

[tits]

Hello,
I just receive my mini ultra board, thanks !
I setup the environment and start with the blink example, it was working fine !
Then tried the LoRa chip with arduino-lmic and after building and uploading the code to it … it stop working. When I plug it, I get :

[ 2080.055889] usb 3-1.2: new full-speed USB device number 11 using ehci-pci
[ 2080.127894] usb 3-1.2: device descriptor read/64, error -32
[ 2080.303965] usb 3-1.2: device descriptor read/64, error -32
[ 2080.479991] usb 3-1.2: new full-speed USB device number 12 using ehci-pci
[ 2080.888161] usb 3-1.2: device not accepting address 12, error -32
[ 2080.960221] usb 3-1.2: new full-speed USB device number 13 using ehci-pci

Do you know what could happened ?
I’ve maybe done a mistake because by default, the mapping on the library is done as :

const lmic_pinmap lmic_pins = {
    .nss = 6,
    .rxtx = LMIC_UNUSED_PIN,
    .rst = 5,
    .dio = {2, 3, 4},
};

Was it my mistake to upload this code on the board ?
Do you have an idea about what happens ?
Is there a way to solve the problem ?

Thanks a lot,
Best,
Titouan

• This topic was modified 8 years, 2 months ago by tits.

[LIM PHANG MOH]

Hi,
Are you running on a Mac?
It shouldn’t unless there’s a code specific in the sketch that doesn’t use the USB port. Try double press the reset button in quick manner.

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