GitLab

Also reduce interrupt time to zero as browsers have a minimum delay anyway.

Use RETURN_ON_EXCEPTION macro to check for exception and return
after all function calls that may return with an exception.

Asyncify seems to prevent ccalls such as the ticker during emscripten_sleep.
To get around this issue, only briefly call emscripten_sleep in mp_hal_delay_ms,
and check ticks passed to return at correct time.

The nRF API is partially implemented in order to support the ticker,
with most methods being stubbed out. The ticker is implemented using
a javascript timeout function that calls the handler. Due to the
unreliability of javascript's timing, the handler is called more
frequently than is necessary for the slow ticker, and the time that
has passed is checked.
The nrf_gpio API calls directly into mbed's gpio API.
Implementing the pin API allows the display to run, though the light
sensor is not yet implemented.