# How can I UART initializtion?

**URL:** <https://discuss.px4.io/t/how-can-i-uart-initializtion/5846>\
**Category:** Uncategorized\
**Created:** [February 26, 2018, 6:23am UTC](https://discuss.px4.io/t/how-can-i-uart-initializtion/5846 "2018-02-26T06:23:50Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![HTaeHyeon](https://discuss.px4.io/letter_avatar_proxy/v4/letter/h/22d042/32.png) [@HTaeHyeon](https://discuss.px4.io/u/HTaeHyeon)\
**Post date:** [February 26, 2018, 6:23am UTC](https://discuss.px4.io/t/how-can-i-uart-initializtion/5846/1 "2018-02-26T06:23:50Z")

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Hello,

I am newbie about px4.

I have had some problems.

I want to connect from px4 to computer.

so I did be programming serial transmit program.

And then I successed about open serial. But I couldn’t receive any data.

Just I could see “Timout out”.

So I had to connect using qgroundcontrol and then exit it. After that, I could receive px4 data.

My option is Port is COM4, BaudRate is 57600, DataBits is 8, and so on.

How can I UART initializtion??