Tracing BLE HCI packets causes hard fault

[idea--list]

Description of defect

Began trying to use trace in my BLE projects to get more insight what is happening behind the scenes.
However if also enable tracing for the Cordio HCI packets, then i get a hard fault.

Target(s) affected by this defect ?

Artemis Thing Plus (have no idea if other chips might be affected or not)

Toolchain(s) (name and version) displaying this defect ?

Mbed Studio V1.4.3

What version of Mbed-os are you using (tag or sha) ?

Mbed OS 6.15.1

What version(s) of tools are you using. List all that apply (E.g. mbed-cli)

ARMC V6.16

How is this defect reproduced ?

Compile and run this official example. Use this mbed_app.json:

{
    "target_overrides": {
        "*": {
            "platform.stdio-baud-rate": 115200,
            "mbed-trace.enable": true,
            "mbed-trace.max-level": "TRACE_LEVEL_DEBUG",
            "cordio.trace-hci-packets": true,
            "cordio.trace-cordio-wsf-traces": true,
            "ble.trace-human-readable-enums": true
        },
        "K64F": {
            "target.components_add": ["BlueNRG_MS"],
            "target.features_add": ["BLE"],
            "target.extra_labels_add": ["CORDIO"]
        },
        "NUCLEO_F401RE": {
            "target.components_add": ["BlueNRG_MS"],
            "target.features_add": ["BLE"],
            "target.extra_labels_add": ["CORDIO"]
        },
        "NRF52840_DK": {
            "target.features_add": ["BLE"]
        },
        "NRF52_DK": {
            "target.features_add": ["BLE"]
        }
    }
}

Then set cordio.trace-hci-packets option to false and the program will execute without hard fault.

[addreas]

This might be the same thing I ran in to a while ago and finally traced down to a set of parameters being swapped around in a macro: addreas@9cf8b08

[idea--list]

Thank you very much!
Your change does the trick. Did you consider making a PR in the official Mbed OS repo?

[addreas]

I did not actually, I'm not sure if this is ambiq specific and didn't want to spend any more time on it. Feel free to make one yourself if you want, though.

I only stumbled across this now as I was browsing through hoping for something new regarding pairing security since that was where I was ultimately getting stuck.