As discussed in !316, this commit prevents I2C lockup by
discarding overflowing samples instead of blocking until they have been
read.  This is not ideal as the samples read will not be the most recent
ones.  A deeper refactor of the sensor-stream internal API can fix this
in the future.

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

See merge request card10/firmware!285 and card10/firmware#146

Ferdinand Bachmann authored 5 years ago and rahix committed 5 years ago

Squashed commits:

e94f7bf9 epicardium/rtc: add monotonic time
e0691c6d pycardium/modules/utime.c: add bindings for monotonic time
756c13df epicardium/rtc: fix numerically unstable subsecond decoding

         the subsecond encoding function from epic_rtc_set_milliseconds
         and the corresponding decoding function from
         epic_rtc_get_milliseconds are not numerically stable.

         i.e., encoding 5 milliseconds to 20 subsecs and immediately
         afterwards decoding that yields 4 milliseconds.

         Adding a bias of 999 (0.24 milliseconds) to the decoding
         function makes it numerically stable, while never decoding any
         subsecond value to more than 999 milliseconds.

e99e278b epicardium/rtc: only poll time once for calculating monotonic_offset
18936b7e pycardium/modules/utime.c: run clang-format
869ac617 epicardium/rtc: add explanation comment for numerically stable subsecond decode

See merge request card10/firmware!126

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

See merge request card10/firmware!298

Jakob Haufe authored 5 years ago and rahix committed 5 years ago

There are several common CRC implementations for Python with the currently
used one (crc16) not being available in e.g. Debian.

crcmod and/or crcelk are readily available on several distributions.

See merge request card10/firmware!295

Merge (full or partial) of !173, !219, and !303.

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

Astro authored 5 years ago and rahix committed 5 years ago

Partial merge of !303

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

joe landa authored 5 years ago and rahix committed 5 years ago

Update overview.rst for easier understanding/usage of the Pycardium
debugger and console.  For people like me who had no idea how to use it
before.

Manual merge for !219

Michael Huebler authored 5 years ago and rahix committed 5 years ago

Update how-to-build.rst - Added another hint for macOS, for the common
problem that strip fails on mpy-cross with "malformed object (unknown
load command 9)"

Manual merge for !173

See merge request card10/firmware!315

The task_backtrace (aliased as tbt) command allows viewing the backtrace
of a task which is currently not running.

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

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 card10/firmware!299

See merge request card10/firmware!309

Fixes #155

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

Fixes #156

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

See merge request card10/firmware!305

l0dables: fix CRT to allow overriding handlers

See merge request card10/firmware!307

default font less ibm/more foss

See merge request card10/firmware!302