UART transmission issue

[Alan Ajit]

Dear nordic,

I try to build BLE application everything works fine expect the UART. The UART has transmission issue.

it has no problem in receiving. but when i tried to transmitting nothing will see on terminal but receive from uart has perfectly done. ie,when it transmitting some time it print junk or printing some part of data . i am struggling here i need a urgent help from you. this is my custom board

Is any voltage issue?

I tried my application in nrf52832 (development board) board its perfectly works but its not work in my nrf52840 custom board any one know why this happens i need urgent help. 

[Simon]

On the custom board (and the DK as well), how are you connecting the UART peripheral to the PC? What pins are you using, and how is the wiring done? Are there any differences between the boards regarding this?