how to start a "hello world' and connect the board to my mobilephone

[Cong Ma]

I turn on the device, the led turns green. And I use usb to connect it with computer then I  open the nrf connect for desktop, the bluetooth low energy tool,

10:51:05.822

Received status with code 0 PKT_SEND_MAX_RETRIES_REACHED, message: 'No response from device. Tried to send packet 6 times.'

10:51:07.010

serial port COM3 closed.

10:51:07.015

Error occured when opening port. Errorcode: NRF_ERROR_TIMEOUT (0xd)

then this error happened, and I cant find the device on my phone.

How can I start a hello world with my phone?

[Cong Ma]

Hello, 

I have successfully linked the 5340 to my mobile phone and have successfully used the phone to send messages to the device. But I don't know how to use the device to send a message to the phone. I don't know where I can enter text in the visual code. I tried to type HELLO in the terminal but nothing happened.

And I want to test the power of the 5340, can I use the NRF6707? It looks like only works with the NRF51,52 series.

Many thanks

Cong