I'm just trying this sample: nrfx_uarte tx_rx_non_blocking, but this is what I can see in the terminal. Why those errors?
[00:00:00.253,479] <inf> NRFX_EXAMPLE: Starting nrfx_uarte non-blocking example.
[00:00:00.261,322] <inf> NRFX_EXAMPLE: Content of TX buffer: Nordic Semiconductor
[00:00:00.261,352] <inf> NRFX_EXAMPLE: Content of RX buffer:
[00:00:00.275,421] <inf> NRFX_EXAMPLE: UARTE event: 3
ASSERTION FAIL [p_cb->state == NRFX_DRV_STATE_INITIALIZED] @ WEST_TOPDIR/modules/hal/nordic/nrfx/drivers/src/nrfx_uarte.c:1628
[00:00:00.275,970] <err> os: r0/a1: 0x00000004 r1/a2: 0x0000065c r2/a3: 0x00000002
[00:00:00.275,970] <err> os: r3/a4: 0x00000000 r12/ip: 0x00000014 r14/lr: 0x000077d1
[00:00:00.276,000] <err> os: xpsr: 0x69000000
[00:00:00.276,000] <err> os: Faulting instruction address (r15/pc): 0x0000ade2
[00:00:00.276,031] <err> os: >>> ZEPHYR FATAL ERROR 4: Kernel panic on CPU 0
[00:00:00.276,062] <err> os: Current thread: 0x20000860 (unknown)