I have an applications that was using NCS 1.7.1 in its west manifest. I am going through the process of upgrading to 1.9.1
My application using zero latency IRQs and sets the config:
CONFIG_ZERO_LATENCY_IRQS=y
This work OK in in 1.7.1 but I get a static assertion failure in 1.9.1
C:/ELI/machine_mailbox/nrf/lib/nrf_modem_lib/nrf_modem_os.c: In function 'read_task_create':
C:/ELI/machine_mailbox/zephyr/include/toolchain/gcc.h:61:36: error: static assertion failed: "Invalid interrupt priority. Values must not exceed IRQ_PRIO_LOWEST"
61 | #define BUILD_ASSERT(EXPR, MSG...) _Static_assert(EXPR, "" MSG)
| ^~~~~~~~~~~~~~
C:/ELI/machine_mailbox/zephyr/include/arch/arm/aarch32/irq.h:97:2: note: in expansion of macro 'BUILD_ASSERT'
97 | BUILD_ASSERT((flags_p & IRQ_ZERO_LATENCY) || \
| ^~~~~~~~~~~~
C:/ELI/machine_mailbox/zephyr/include/arch/arm/aarch32/irq.h:127:2: note: in expansion of macro '_CHECK_PRIO'
127 | _CHECK_PRIO(priority_p, flags_p) \
| ^~~~~~~~~~~
C:/ELI/machine_mailbox/zephyr/include/irq.h:112:2: note: in expansion of macro 'ARCH_IRQ_DIRECT_CONNECT'
112 | ARCH_IRQ_DIRECT_CONNECT(irq_p, priority_p, isr_p, flags_p)
| ^~~~~~~~~~~~~~~~~~~~~~~
C:/ELI/machine_mailbox/nrf/lib/nrf_modem_lib/nrf_modem_os.c:334:2: note: in expansion of macro 'IRQ_DIRECT_CONNECT'
334 | IRQ_DIRECT_CONNECT(NRF_MODEM_APPLICATION_IRQ,
| ^~~~~~~~~~~~~~~~~~
[4/22] Building C object modules/nrf/lib/nrf_modem_lib/CMakeFiles/..__nrf__lib__nrf_modem_lib.dir/nrf_modem_lib.c.obj
ninja: build stopped: subcommand failed.The issue is :
IRQ_DIRECT_CONNECT(NRF_MODEM_APPLICATION_IRQ,
NRF_MODEM_APPLICATION_IRQ_PRIORITY,
rpc_proxy_irq_handler, UNUSED_FLAGS);
in nrf_modem_os.c
NRF_MODEM_APPLICATION_IRQ is set to a value of 6 in in both version. Maybe this has something to do w/ Zephyr changing how it checks priorities at build time?
Setting NRF_MODEM_APPLICATION_IRQ to 5 pass the assertion check. Can someone at Nordic take a look?
