About zgg

@hkayan some update to share with you, I tried to build the libmbed.a from the source based on the public repo of the mbed-os core, and it worked well w/o any issues. Here are some details. Compile mbed-os from source This is useful if the user wants to custom the mbed-os and apply the changes to Arduino core. Prerequisites python 3.x: as a reference, I used 3.9.6 mbed CLI (1.x): as a reference, I used 1.10.5 Step 1 - Clone the repos Clone the ArduinoCore-mbed  mkdir -p ~/Arduino/hardware/arduino cd ~/Arduino/hardware/arduino git clone https://github.com/arduino/ArduinoCore-mbed.git cd ArduinoCore-mbed Clone the Arduino-API repo mkdir -p ~/Arduino cd ~/Arduino git clone git@github.com:arduino/ArduinoCore-API git clone git@github.com:arduino/ArduinoCore-API   cd ~/Arduino/hardware/arduino/ArduinoCore-mbed/cores/arduino  ln -sf ~/Arduino/ArduinoCore-API/api . Clone mbed-os repo export mbed_os_repo=~/prj/mbed-os mkdir -p ~/prj cd ~/prj git clone https://github.com/ARMmbed/mbed-os.git Step 2 - mbed-os-to-arduino [optional] This step is optional and can be tried when something goes wrong in the build process. change the "set -ef" to "set -xf" in file mbed-to-arduino Step 3 - Preparation export arduino_core=~/Arduino/hardware/arduino/ArduinoCore-mbed cd $arduino_core ./mbed-os-to-arduino -a -r $mbed_os_repo NICLA:NICLA Note: in this step, the script  tries to apply some patches to the mbed-os repo, and this might cause some trivial failures (errors such as patches that cannot be applied), and this kind of errors could be ignored. Step 4 - Make Configuration Changes if needed edit the file ./variants/NICLA/conf/mbed_app.json Changes such as stack size etc could be changed. This would affect the libmbed.a generated Step 5 - Build the core (including the libmbed.a) ./mbed-os-to-arduino -r $mbed_os_repo NICLA:NICLA Step 6 - Check result The script should say: "exit 0" at the end of the process, otherwise some errors have occured and should be fixed accordingly. Check the build environement (mbed CLI, python version etc) zg@ZG-TC:~/Arduino/hardware/arduino/ArduinoCore-mbed$ ls -lha variants/NICLA/libs/ total 5.3M drwxrwxr-x 2 zg zg 4.0K Oct 24 20:09 . drwxrwxr-x 4 zg zg 4.0K Oct 24 20:19 .. -rw-rw-r-- 1 zg zg 5.3M Oct 24 20:19 libmbed.a ... View more

@hkayan When I was building the mbed-os lib last time, it was based on repo (same but private at that time) which has fallen behind the public repo quite a lot now. I was basically running the script "./mbed-os-to-arduino " with proper arguments, with BOARD_NAME set as "NICLA". ``` ./mbed-os-to-arduino -a -r ~/prj/mbed-os/ NICLA:NICLA ```  Since it has been a long time since my last build I am not sure the command still works with the public repo.  When I get a chance I will see if I can build the lib with the latest public repo.    ... View more

hi @hkayan The mbed-os library could be compiled using the github repo: https://github.com/arduino/ArduinoCore-mbed You could follow the documentation within the README. Hopefully this helps a little bit and you get a smooth build.         ... View more

@mcmchris Thanks for sharing the info.  based on some  experiments, there is about ~4KB RAM available for storing global variables when you use BLE. One thing that could be tried is to shrink the ML model to lower the memory consumption, not sure if this is possible with the Edge Impulse tools. The other option is to run the ML model on the BHI260AP chip which has larger memory. ... View more