Add serial_flush function

Closes #164

See merge request card10/firmware!314

serial_flush() allows flushing the serial buffer from anywhere in
Epicardium.

- When run from thread mode it will flush to UART, CDC-ACM and BLE.
  This is similar to what the serial task would do once it is
  rescheduled.
- When run inside an exception handler, it will only flush to UART
  because CDC-ACM and BLE cannot be flushed from an ISR.  Note that
  characters flushed this way will never appear on the other outputs,
  even if the serial task is scheduled at some point afterwards.

The main use of this function is to ensure output of messages even in
cases of critical failures.

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

Also decrease the time needed to update the LEDs

Closes #50

Closes #109

Due to a known issue (#133) the first call to bhy_mapping_matrix_set
can fail. This is a quick fix.

See merge request card10/firmware!313

Also modifies the PMIC UI code to be more intuitive

Add a few missing instances of locking

See merge request card10/firmware!312

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

See merge request !299

See merge request !309

Fixes #155

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

Fixes #156

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

See merge request !305

l0dables: fix CRT to allow overriding handlers

See merge request !307

default font less ibm/more foss

See merge request !302

Fixes the side led flashlight and display reset.

See merge request !300

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

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

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

See merge request !73

Florian Kargl authored 5 years ago and rahix committed 5 years ago

Modify PB callback interface to allow distinction between up/down
events.

Florian Kargl authored 5 years ago and rahix committed 5 years ago

- Add portexpander interrupt handling
- Prevent redundant interrupts between polling portexpander

See merge request card10/firmware!239

markus authored 5 years ago and rahix committed 5 years ago

commit a9c3712ca591b56248f9934493e6946c503ec395
Author: Markus <markus@muc.ccc.de>
Date:   Sat Aug 24 01:29:03 2019 +0000

    Code formatting

commit b69c586cd2c535cf480c2b45ebad4900c6d637e1
Author: Markus <markus@muc.ccc.de>
Date:   Fri Aug 23 23:15:15 2019 +0000

    Remove unused variable

commit a83ff3c0ea8028957361df2a9949bd66530a1e3c
Author: Markus <markus@muc.ccc.de>
Date:   Fri Aug 23 23:06:04 2019 +0000

    Make time setting more appealing

commit 469815237b8e8a8c6588d1c76ed02cff1e4f2a85
Author: Markus <markus@muc.ccc.de>
Date:   Fri Aug 23 23:01:25 2019 +0000

    Add wait time to loop

commit 6b58b587c0fb147c5b794285c27b4d0a84d0bd8a
Author: Markus <markus@muc.ccc.de>
Date:   Fri Aug 23 22:56:40 2019 +0000

    Give user time to release button

commit 823c00a72712c9e4a98b0103ab7736cab581e2c5
Author: Markus <markus@muc.ccc.de>
Date:   Fri Aug 23 22:44:48 2019 +0000

    Add option to set time

commit 927d3057bcb90118a16a0b35f573ae753f8a4cd9
Author: Markus <markus@muc.ccc.de>
Date:   Fri Aug 23 22:44:25 2019 +0000

    Remove obsolete lines

commit e2dbfe81e36b9c6f7f214da361ad0be4d518cd77
Author: Markus <markus@muc.ccc.de>
Date:   Fri Aug 23 21:37:42 2019 +0000

    Model localtime as parameter to update function

commit ad560d6c5067044a21c5bfaa6d9feb2eaca66228
Author: Markus <markus@muc.ccc.de>
Date:   Fri Aug 23 21:29:09 2019 +0000

    Remove obsolete drawImage()

commit 018f911b63e53738cc9e08aa83fb8e21786c5a44
Author: Markus <markus@muc.ccc.de>
Date:   Fri Aug 23 21:28:04 2019 +0000

    Fix button_pressed

commit d9b5e26a3b0a50c25caa2c4636b4c33d79b9eb65
Author: Markus <markus@muc.ccc.de>
Date:   Fri Aug 23 21:17:19 2019 +0000

    Remove obsolete Time dummy class

See merge request card10/firmware!291

See merge request card10/firmware!293

See merge request !282