• I’ll investigate a bit more , Signed up to Udemy course on interfaces in embedded c, for stm32 !!! but no promises.

    Out of interest , and maybe mid term answer to my problem, have you decided if, the new Espruino Wi-fi Board might support USB host ! Or use hardware that could. ? If one was going to invest time in this maybe it be better spent that way.

    Thanks again for considered response.
    And Happy new year.