Receiving UART stops working after first transmit

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User20107
Level 1
Level 1
Hi,

I need help resolving a problem regarding UART over the OBD.
I am trying to implement a communication between a XMC4300 RelaxKit (through on-board-debugger of the board) and a laptop.
Receiving UART Messages works fine until after the first UART transmit to the Laptop takes place. After that the reception doesn't seem to work anymore. No UART signals are even reaching the dedicated µC pins. The following error shows up when I use the DAVE debugger:

4633.attach

After resetting the board I can receive and transmit one message before I have to reset it again.
I already installed the latest J-Link Software (V6.85b).
My best guess would be that the Debugging IC is somehow crashing after the transmit thus blocking the UART from reaching the µC.
The Software itself should not be the cause as I used almost the same one on the XMC1400 board without any problems.

Any help would be appreciated

Brandon
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