zephyr/tests/drivers/uart/uart_mix_fifo_poll
Grzegorz Swiderski 13b1cfa5ec boards: nordic: Align with updated Nordic owned memory bindings
Apply the following changes to `nrf54h20dk` and `nrf9280pdk`:

* Convert `perm-*` properties to the newly introduced `nordic,access`,
  both in board files and tests.

* Redefine shared regions to specify multiple access owners per node,
  and ensure that each such region is reserved by one domain at a time.
  `cpuapp_cpurad_ram0x_region` is only enabled by Radiocore, while
  `cpuapp_cpucell_ram0x_region` is only enabled by Application core.

* Divide `shared_ram3x_region` so that each sub-region is owned by a
  different domain. Their addresses must be rounded down to fit the
  current UICR format.

Signed-off-by: Grzegorz Swiderski <grzegorz.swiderski@nordicsemi.no>
2024-10-15 04:11:21 -04:00
..
boards
src
CMakeLists.txt
Kconfig
README.txt
prj.conf
testcase.yaml

README.txt

The purpose of this test is to validate that uart_poll_out call is resilient to
being interrupted by another uart API call. That includes uart_poll_out called
from higher priority context, uart_fifo_fill called from UART interrupt context
and uart_tx called from higher priority context. Preemptions shall not lead to
any bytes being dropped.

This test is establishing 3 context from which uart_poll_out is called:
- main thread
- higher priority thread
- k_timer timeout context

From each context stream of data is being sent. Bytes in streams are encoded as
following: 4 MSB bits contains stream ID, 4 LSB bits are incremented.

Test requires that two pairs of pins are shortened: TX with RX and CTS with RTS.
UART receives loopback data and validates if for each stream (identified by ID)
data is consistent.