Important changes to forums and questions
All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.
Problem with Serial console on NRF52-DK
Topic last updated 11 Dec 2018, by 
Henryk Szal.
1 reply
Henryk Szal.
1 reply
Hi,
I am currently developing software on the NRF52-DK and have a "simple" problem. I am using Serial class to communicate with a PC. Unfortunately, there is some bug in initializing UART on NRF52-DK. Everything works fine if the card is powered on. When the card is turned off and next on (power off / power on), random characters appear on the input. The observed effect not depend on the baud rate or port configuration (hardware handshake on or off). It seems that USB enumeration process disrupts the UART state and generates (several!) random characters. So every time you turn on the card, you need to run the debugger to perform a reset. Its very cumbersome and prevents launching demo software just after board startup.
Any idea for a rescue? TIA