DA1468x / latest BSP.
I am facing a bug while putting my system into extended sleep.
The function ad_uart_read, if called at the same moment than the system is switched to extended_sleep mode, sends the entire circular buffer. After wake-up new calls to ad_uart_read does not succeed and return no chars while they can be seen on the hardware bus.
I tried to switch back to SOFTWARE FIFO using the exact same code and the behavior is OK.
Good luck !