The 2M phy caused problems when turning on encryption. I'm also
disabling the coded phy as I don't know it it works and need to first
test it with a phone/central which has support.

Closes #172

Adds an option to write a btsnoop compatible log file containing BLE
traffic. A new file is created after each boot if BLE is activated and
the `ble_log_enable` option is set in `card10.cfg`. The last 10 logs are
kept via log rotation.

Mainly to ease development ATM

Not that it really matters much at the moment as we allow bondings at
any point in time, but this will hopefully change soon.

It's 44 years since the release of vi and sadly lots of editors still
don't care about trimming off trailing spaces ...

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

Instead of blocking the triggering task when core 1 is still busy
handling the previous interrupt, offload interrupt dispatching into
a separate task.  This is the first step towards making API-calls
interrupt safe.

Next to the async triggering, the synchroneous mechanism is retained for
special cases where async does not work (e.g. because of spin-locks).
Currently, there is only one such case when resetting core 1 (triggering
EPIC_INT_RESET).

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

api_interrupt_trigger() cannot fail except by a programmer error
(passing an invalid ID) in which case we should raise an assertion.
Thus, make it return `void` instead of `int`.

This is also in preparation for future work to schedule interrupts
asynchroneously.

Signed-off-by: Rahix <rahix@rahix.de>

When opening an ACM device Linux sends the ACM_SET_CONTROL_LINE_STATE
with DTR and CTS high. We can use this re-enable the ACM device on our
side after a lockup.

This speeds up file transfers from Linux machines. Looks like the impact
on power consumption is not too large. Android also does not seem to
take this into account.

I need unit tests :/

Allows to set the string value of a key. Perists the value to the
configuration file.

Introduces a small state machine which parses the file character by
character. This eases the logic around parsing whole lines
significantly.

Now also trims lines, handling all non printable characters correctly.

Jakob authored 5 years ago and Arist committed 5 years ago

Epicardium API for max86150 aligned with latest state of sensor
development on card10.

Co-Authored-by: Arist <aristkojevnikov@gmail.com>