Freeze into semtech_loramac_send call (pkg/semtech-loramac)

[donsez]

"Freeze" into semtech_loramac_send call (pkg/semtech-loramac)

https://github.com/airqualitystation/firmware_for_bmx280_pms7003/blob/524e911ff5e0fc2e727f7584021776aa828c6222/main.c#L370

duration varies between 3 secs to 20 minutes.

Description

The current tested board is lora-e5-dev (mini version)
https://github.com/airqualitystation/firmware_for_bmx280_pms7003/blob/524e911ff5e0fc2e727f7584021776aa828c6222/images/wiring.png

Steps to reproduce the issue

The freeze can be observed several times in the grafana dashboard (red circles into the fCnt plot)

Has anyone observed this phenomenon?

I try to disable Duty Cycle but without success

Expected results

No freeze

Actual results

Freeze

Versions

RIOT]> gmake print-versions

Operating System Environment
----------------------------
         Operating System: macOS 12.6
                   Kernel: Darwin 21.6.0 x86_64 i386
./dist/tools/ci/print_toolchain_versions.sh: line 78: realpath: command not found
             System shell:  (probably dash)
             make's shell: GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin21)

Installed compiler toolchains
-----------------------------
               native gcc: Apple clang version 14.0.0 (clang-1400.0.29.102)
        arm-none-eabi-gcc: arm-none-eabi-gcc (GNU Tools for Arm Embedded Processors 8-2018-q4-major) 8.2.1 20181213 (release) [gcc-8-branch revision 267074]
                  avr-gcc: missing
           msp430-elf-gcc: missing
       riscv-none-elf-gcc: missing
  riscv64-unknown-elf-gcc: missing
     riscv-none-embed-gcc: missing
     xtensa-esp32-elf-gcc: missing
   xtensa-esp8266-elf-gcc: missing
                    clang: Apple clang version 14.0.0 (clang-1400.0.29.102)

Installed compiler libs
-----------------------
     arm-none-eabi-newlib: "3.0.0"
        msp430-elf-newlib: missing
    riscv-none-elf-newlib: missing
riscv64-unknown-elf-newlib: missing
  riscv-none-embed-newlib: missing
  xtensa-esp32-elf-newlib: missing
xtensa-esp8266-elf-newlib: missing
                 avr-libc: missing (missing)

Installed development tools
---------------------------
                   ccache: ccache version 4.6.1
                    cmake: cmake version 3.22.0
                 cppcheck: missing
                  doxygen: 1.9.2
                      git: git version 2.38.1
                     make: GNU Make 3.81
                  openocd: Open On-Chip Debugger 0.11.0
                   python: Python 3.10.6
                  python2: missing
                  python3: Python 3.10.6
                   flake8: error: /Users/donsez/miniforge3/bin/python3: No module named flake8
               coccinelle: missing