gps-watch.git
4 years agocommon: Rename TimeAndPos::latitude to latitude_deg.
Tilman Sauerbeck [Sun, 19 Jan 2020 20:11:29 +0000 (21:11 +0100)]
common: Rename TimeAndPos::latitude to latitude_deg.

Same for longitude.

4 years agoapplication: Show distance travelled while recording.
Tilman Sauerbeck [Sun, 19 Jan 2020 11:16:48 +0000 (12:16 +0100)]
application: Show distance travelled while recording.

4 years agocommon: Implement TimeAndPos::distance_cm().
Tilman Sauerbeck [Sun, 19 Jan 2020 18:57:42 +0000 (19:57 +0100)]
common: Implement TimeAndPos::distance_cm().

Calculates the distance between two points in cm.

4 years agocommon: Store GPS coordinates in radians, too.
Tilman Sauerbeck [Sun, 19 Jan 2020 11:20:16 +0000 (12:20 +0100)]
common: Store GPS coordinates in radians, too.

Use the Q15.49 fixed point format to store those values.

4 years agocommon: Add the fixed15_49 module.
Tilman Sauerbeck [Sun, 19 Jan 2020 11:24:07 +0000 (12:24 +0100)]
common: Add the fixed15_49 module.

Implements Q15.49 fixed point math.

4 years agotest: Order arguments to assert_eq!() consistently.
Tilman Sauerbeck [Sat, 18 Jan 2020 18:51:02 +0000 (19:51 +0100)]
test: Order arguments to assert_eq!() consistently.

The expected value comes first.

4 years agocommon: Include the recordings' size in the listing.
Tilman Sauerbeck [Mon, 13 Jan 2020 07:27:02 +0000 (08:27 +0100)]
common: Include the recordings' size in the listing.

The size is only approximate (i.e. multiples of sectors used).

4 years agocommon: Avoid duplicated recordings shown in Logger::list_recordings().
Tilman Sauerbeck [Sun, 12 Jan 2020 11:56:56 +0000 (12:56 +0100)]
common: Avoid duplicated recordings shown in Logger::list_recordings().

This is achieved by simplifying the way we sort our sector indices,
which unfortunately also comes with a performance hit.

4 years agocommon: Use slice.swap() to clean up SectorHeaderIter::sort().
Tilman Sauerbeck [Sun, 12 Jan 2020 09:41:40 +0000 (10:41 +0100)]
common: Use slice.swap() to clean up SectorHeaderIter::sort().

4 years agocommon: Factor out the SectorHeaderIter::sort() method.
Tilman Sauerbeck [Sun, 12 Jan 2020 09:28:58 +0000 (10:28 +0100)]
common: Factor out the SectorHeaderIter::sort() method.

4 years agotest: Verify Logger::list_recordings()'s behavior with empty storage.
Tilman Sauerbeck [Sat, 11 Jan 2020 13:18:53 +0000 (14:18 +0100)]
test: Verify Logger::list_recordings()'s behavior with empty storage.

We expect no output in that case.

4 years agotest: Make Logger test's pipe non-blocking.
Tilman Sauerbeck [Sat, 11 Jan 2020 10:33:22 +0000 (11:33 +0100)]
test: Make Logger test's pipe non-blocking.

There are cases where we need to verify that the pipe is empty.

4 years agotest: Add a first test for Logger::list_recordings().
Tilman Sauerbeck [Sat, 11 Jan 2020 09:43:51 +0000 (10:43 +0100)]
test: Add a first test for Logger::list_recordings().

4 years agotools: Import the gpxify program.
Tilman Sauerbeck [Fri, 10 Jan 2020 10:31:34 +0000 (11:31 +0100)]
tools: Import the gpxify program.

gpxify takes as input an recording retrieved from the GPS watch
and converts it to GPX format.

4 years agotools: Add license header to update-firmware.
Tilman Sauerbeck [Fri, 10 Jan 2020 09:11:51 +0000 (10:11 +0100)]
tools: Add license header to update-firmware.

4 years agocommon: Implement the "ls" shell command.
Tilman Sauerbeck [Thu, 9 Jan 2020 22:40:50 +0000 (23:40 +0100)]
common: Implement the "ls" shell command.

Shows a listing of the stored recordings.

4 years agocommon: Implement Logger::list_recordings().
Tilman Sauerbeck [Thu, 9 Jan 2020 22:40:23 +0000 (23:40 +0100)]
common: Implement Logger::list_recordings().

4 years agocommon: Make Logger::read_sector_header() read the start_time field.
Tilman Sauerbeck [Fri, 10 Jan 2020 22:17:27 +0000 (23:17 +0100)]
common: Make Logger::read_sector_header() read the start_time field.

This is necessary so that we can show the date and time when a
recording was done.

4 years agotest: Use a pipe to back the write buffer for the Logger test.
Tilman Sauerbeck [Fri, 10 Jan 2020 22:20:28 +0000 (23:20 +0100)]
test: Use a pipe to back the write buffer for the Logger test.

4 years agocommon: Silence compiler warnings about ignored Result return values.
Tilman Sauerbeck [Thu, 9 Jan 2020 20:19:57 +0000 (21:19 +0100)]
common: Silence compiler warnings about ignored Result return values.

Note that we still don't handle potential errors from Storage::write().

4 years agocommon: Implement the "get" shell command.
Tilman Sauerbeck [Thu, 9 Jan 2020 14:18:25 +0000 (15:18 +0100)]
common: Implement the "get" shell command.

Retrieves a recording in yenc format.

4 years agoapplication: Start and stop recordings by pressing the play button.
Tilman Sauerbeck [Thu, 9 Jan 2020 14:14:40 +0000 (15:14 +0100)]
application: Start and stop recordings by pressing the play button.

4 years agocommon: Implement Logger::has_recording().
Tilman Sauerbeck [Thu, 9 Jan 2020 14:14:13 +0000 (15:14 +0100)]
common: Implement Logger::has_recording().

4 years agocontrib: Add udev rules file.
Tilman Sauerbeck [Thu, 9 Jan 2020 13:25:12 +0000 (14:25 +0100)]
contrib: Add udev rules file.

4 years agocommon: Add missing Write Enable command to Mx25L::program_page().
Tilman Sauerbeck [Thu, 9 Jan 2020 11:42:53 +0000 (12:42 +0100)]
common: Add missing Write Enable command to Mx25L::program_page().

Without a write enable, the flash memory doesn't take our data.

4 years agoapplication: Set up a Logger instance.
Tilman Sauerbeck [Thu, 9 Jan 2020 11:05:07 +0000 (12:05 +0100)]
application: Set up a Logger instance.

This also passes a mutable Logger reference to Shell::update()
since we no longer can pass another mutable Storage reference to it:
doing so would break the requirement of only having one
mutable reference to any instance at any time, and Logger requires
a mutable storage reference, too.

4 years agocommon: Make Logger::storage public.
Tilman Sauerbeck [Thu, 9 Jan 2020 11:03:07 +0000 (12:03 +0100)]
common: Make Logger::storage public.

This is required to avoid some multiple mutable borrow issues
in the upcoming changesets.

4 years agocommon: Implement Logger::get_recording().
Tilman Sauerbeck [Thu, 9 Jan 2020 10:39:54 +0000 (11:39 +0100)]
common: Implement Logger::get_recording().

4 years agocommon: Synchronize sector headers after a recording is finished.
Tilman Sauerbeck [Thu, 9 Jan 2020 10:02:21 +0000 (11:02 +0100)]
common: Synchronize sector headers after a recording is finished.

This is necessary to be able to retrieve the recording without
restarting the device.

4 years agocommon: Factor out Logger::read_sector_header().
Tilman Sauerbeck [Thu, 9 Jan 2020 10:00:28 +0000 (11:00 +0100)]
common: Factor out Logger::read_sector_header().

4 years agotest: Add tests for the logger module.
Tilman Sauerbeck [Wed, 8 Jan 2020 21:13:48 +0000 (22:13 +0100)]
test: Add tests for the logger module.

4 years agocommon: Add the logger module.
Tilman Sauerbeck [Sun, 5 Jan 2020 21:22:41 +0000 (22:22 +0100)]
common: Add the logger module.

4 years agotest: Add tests for the gps module.
Tilman Sauerbeck [Wed, 8 Jan 2020 17:36:47 +0000 (18:36 +0100)]
test: Add tests for the gps module.

4 years agocommon: Make Gps::update() access UART0's receive buffer via a closure.
Tilman Sauerbeck [Wed, 8 Jan 2020 17:30:19 +0000 (18:30 +0100)]
common: Make Gps::update() access UART0's receive buffer via a closure.

This will allow us to write tests for Gps without providing a fake
implementation of the UART reader function in the test.

4 years agobuild: Add infrastructure for building automated tests.
Tilman Sauerbeck [Wed, 8 Jan 2020 16:40:32 +0000 (17:40 +0100)]
build: Add infrastructure for building automated tests.

4 years agobuild: Split SConscript.libcommon in two.
Tilman Sauerbeck [Wed, 8 Jan 2020 13:32:29 +0000 (14:32 +0100)]
build: Split SConscript.libcommon in two.

Split it in SConscript.libcommon.c, dealing with the C code
that's used to build libcommon.a, and SConscript.libcommon.rs,
used to build libcommon.rlib.

This will be useful for native builds used for testing in the future.

4 years agocommon: Implement the "dump_storage" shell command.
Tilman Sauerbeck [Wed, 8 Jan 2020 11:44:09 +0000 (12:44 +0100)]
common: Implement the "dump_storage" shell command.

Lists the mx25l flash's contents in the yencode format.

4 years agocommon: Implement Storage::size() in Mx25l.
Tilman Sauerbeck [Wed, 8 Jan 2020 11:43:14 +0000 (12:43 +0100)]
common: Implement Storage::size() in Mx25l.

4 years agocommon: Implement the "clear_storage" shell command.
Tilman Sauerbeck [Wed, 8 Jan 2020 10:52:36 +0000 (11:52 +0100)]
common: Implement the "clear_storage" shell command.

Erases all of the mx25l flash's contents.

4 years agoapplication: Integrate flash storage via Mx25l.
Tilman Sauerbeck [Wed, 8 Jan 2020 10:50:50 +0000 (11:50 +0100)]
application: Integrate flash storage via Mx25l.

4 years agocommon: Implement Storage::clear() in Mx25l.
Tilman Sauerbeck [Wed, 8 Jan 2020 10:45:29 +0000 (11:45 +0100)]
common: Implement Storage::clear() in Mx25l.

4 years agoapplication: Integrate the shell.
Tilman Sauerbeck [Wed, 8 Jan 2020 10:20:32 +0000 (11:20 +0100)]
application: Integrate the shell.

4 years agocommon: Implement Mx25l::erase_all().
Tilman Sauerbeck [Wed, 8 Jan 2020 09:40:49 +0000 (10:40 +0100)]
common: Implement Mx25l::erase_all().

4 years agocommon: Implement Storage::write() in Mx25l.
Tilman Sauerbeck [Wed, 8 Jan 2020 09:48:31 +0000 (10:48 +0100)]
common: Implement Storage::write() in Mx25l.

4 years agocommon: Implement Mx25l::program_page().
Tilman Sauerbeck [Wed, 8 Jan 2020 09:46:18 +0000 (10:46 +0100)]
common: Implement Mx25l::program_page().

4 years agocommon: Implement Mx25l::erase_sector().
Tilman Sauerbeck [Wed, 8 Jan 2020 09:45:03 +0000 (10:45 +0100)]
common: Implement Mx25l::erase_sector().

4 years agocommon: Add the varint module.
Tilman Sauerbeck [Wed, 8 Jan 2020 11:05:50 +0000 (12:05 +0100)]
common: Add the varint module.

4 years agocommon: Add the yencode module.
Tilman Sauerbeck [Sun, 5 Jan 2020 14:49:55 +0000 (15:49 +0100)]
common: Add the yencode module.

4 years agocommon: Implement Time::fmt_date().
Tilman Sauerbeck [Sun, 5 Jan 2020 21:28:07 +0000 (22:28 +0100)]
common: Implement Time::fmt_date().

4 years agocommon: Add the shell module.
Tilman Sauerbeck [Wed, 8 Jan 2020 10:09:36 +0000 (11:09 +0100)]
common: Add the shell module.

It implements no useful functionality yet.

4 years agobootloader: Stay in bootloader when the middle left push button is held.
Tilman Sauerbeck [Sun, 5 Jan 2020 18:51:22 +0000 (19:51 +0100)]
bootloader: Stay in bootloader when the middle left push button is held.

4 years agoapplication: Make system reset less likely do be run by accident.
Tilman Sauerbeck [Sun, 5 Jan 2020 18:48:54 +0000 (19:48 +0100)]
application: Make system reset less likely do be run by accident.

System reset is now triggered by holding the upper left and the
lower right push button at the same time.

4 years agoapplication: Configure the remaining push buttons.
Tilman Sauerbeck [Sun, 5 Jan 2020 18:46:08 +0000 (19:46 +0100)]
application: Configure the remaining push buttons.

4 years agoapplication: Factor out the configure_push_buttons() function.
Tilman Sauerbeck [Sun, 5 Jan 2020 18:33:32 +0000 (19:33 +0100)]
application: Factor out the configure_push_buttons() function.

4 years agoapplication: Factor out the reset_requested() function.
Tilman Sauerbeck [Sun, 5 Jan 2020 18:23:39 +0000 (19:23 +0100)]
application: Factor out the reset_requested() function.

No change in behavior.

4 years agoapplication: Set up pins for the MX25L flash memory.
Tilman Sauerbeck [Sun, 5 Jan 2020 18:18:26 +0000 (19:18 +0100)]
application: Set up pins for the MX25L flash memory.

This configures SPI0 as well as the GPIO used as the flash's
chip select line.

4 years agocommon: Implement Storage::read() in Mx25l.
Tilman Sauerbeck [Sun, 5 Jan 2020 17:53:58 +0000 (18:53 +0100)]
common: Implement Storage::read() in Mx25l.

4 years agocommon: Add the storage module.
Tilman Sauerbeck [Mon, 6 Jan 2020 09:44:21 +0000 (10:44 +0100)]
common: Add the storage module.

4 years agoapplication: Perform system reset from panic handler if requested.
Tilman Sauerbeck [Sat, 4 Jan 2020 18:29:57 +0000 (19:29 +0100)]
application: Perform system reset from panic handler if requested.

This is untested; I'm not sure if it would work at all.

4 years agocommon: Add the mx25l module.
Tilman Sauerbeck [Sat, 4 Jan 2020 18:19:02 +0000 (19:19 +0100)]
common: Add the mx25l module.

Provides access to the status register and device ID only for now.

4 years agocommon: Accept DGPS fix information.
Tilman Sauerbeck [Sat, 4 Jan 2020 18:15:08 +0000 (19:15 +0100)]
common: Accept DGPS fix information.

We used to reject differential GPS (DGPS) fixes as invalid, but they
are actually more accurate than standard GPS fixes.

4 years agocommon: Increase size of the UART receive ringbuffer.
Tilman Sauerbeck [Sat, 4 Jan 2020 17:24:44 +0000 (18:24 +0100)]
common: Increase size of the UART receive ringbuffer.

The GPS module sends about ~380 bytes per second, which led to
overflows of our 256 byte sized ringbuffer.

4 years agocommon: Add the spi module.
Tilman Sauerbeck [Sat, 4 Jan 2020 11:00:25 +0000 (12:00 +0100)]
common: Add the spi module.

4 years agocommon: Restart NMEA message parsing when a '$' character is seen.
Tilman Sauerbeck [Fri, 3 Jan 2020 20:42:24 +0000 (21:42 +0100)]
common: Restart NMEA message parsing when a '$' character is seen.

The GPS module sometimes sends incomplete NMEA messages such as this:
  $GP$GGA...*
This changeset makes it so we'd only parse the second, complete message
in that example.

4 years agotools: Pad final chunks with 0xff if necessary.
Tilman Sauerbeck [Fri, 3 Jan 2020 15:33:15 +0000 (16:33 +0100)]
tools: Pad final chunks with 0xff if necessary.

The bootloader only accepts chunks whose size is a multiple of four.

4 years agocommon: Move panic handler out of libcommon.
Tilman Sauerbeck [Fri, 3 Jan 2020 15:09:53 +0000 (16:09 +0100)]
common: Move panic handler out of libcommon.

This allows us to do a native build of libcommon which is useful for
unit testing.

4 years agoapplication: Show current time on the display if we have a GPS fix.
Tilman Sauerbeck [Tue, 31 Dec 2019 12:32:48 +0000 (13:32 +0100)]
application: Show current time on the display if we have a GPS fix.

4 years agocommon: Implement Time::fmt_time().
Tilman Sauerbeck [Thu, 2 Jan 2020 12:32:26 +0000 (13:32 +0100)]
common: Implement Time::fmt_time().

Formats time as HH:MM:SS.

4 years agocommon: Add the time module.
Tilman Sauerbeck [Thu, 2 Jan 2020 12:28:59 +0000 (13:28 +0100)]
common: Add the time module.

This currently only contains the equivalent of gmtime(), which was
adapted from Rich Felker's musl.

4 years agocommon: Add the fmt module.
Tilman Sauerbeck [Tue, 31 Dec 2019 12:35:35 +0000 (13:35 +0100)]
common: Add the fmt module.

4 years agocommon: Implement screen::clear() and screen::draw_text().
Tilman Sauerbeck [Mon, 30 Dec 2019 18:51:46 +0000 (19:51 +0100)]
common: Implement screen::clear() and screen::draw_text().

This also imports (a subset of) Frederic Cambus' spleen font,
used by screen::draw_text().

4 years agocommon: Tweak bit order of screen data.
Tilman Sauerbeck [Mon, 30 Dec 2019 17:18:08 +0000 (18:18 +0100)]
common: Tweak bit order of screen data.

The left-most pixel is now defined by the most significant bit.
This is a more intuitive representation than what we had before.

4 years agoapplication: Visualize GPS fix state using the satellite icons.
Tilman Sauerbeck [Tue, 31 Dec 2019 11:03:50 +0000 (12:03 +0100)]
application: Visualize GPS fix state using the satellite icons.

As long as we are waiting for a GPS fix, we animate the satellite
icons.

4 years agoapplication: Manage whether or not we have valid GPS fix information.
Tilman Sauerbeck [Tue, 31 Dec 2019 10:28:58 +0000 (11:28 +0100)]
application: Manage whether or not we have valid GPS fix information.

Expire such information after about 1.5s.

4 years agoapplication: Blink heart icon to indicate liveness.
Tilman Sauerbeck [Tue, 31 Dec 2019 09:51:45 +0000 (10:51 +0100)]
application: Blink heart icon to indicate liveness.

4 years agocommon: Implement display::show_icon() and display::hide_icon().
Tilman Sauerbeck [Tue, 31 Dec 2019 08:17:08 +0000 (09:17 +0100)]
common: Implement display::show_icon() and display::hide_icon().

This only supports the alarm, heart and satellite icons for now,
but not the battery meter icon.

4 years agoapplication: Extract time and position from GPS NMEA messages.
Tilman Sauerbeck [Mon, 30 Dec 2019 10:39:26 +0000 (11:39 +0100)]
application: Extract time and position from GPS NMEA messages.

4 years agocommon: Add the gps module.
Tilman Sauerbeck [Mon, 30 Dec 2019 09:41:00 +0000 (10:41 +0100)]
common: Add the gps module.

4 years agoapplication: Set up pins for the GPS.
Tilman Sauerbeck [Mon, 30 Dec 2019 10:42:42 +0000 (11:42 +0100)]
application: Set up pins for the GPS.

This configures UART0 as well as the GPS' reset line.

4 years agoapplication: Define UART0_IRQHandler().
Tilman Sauerbeck [Sun, 29 Dec 2019 00:31:08 +0000 (01:31 +0100)]
application: Define UART0_IRQHandler().

Writes received data to the global uart0_rx_buf ringbuffer.

4 years agocommon: Add Rust glue for the ringbuf module.
Tilman Sauerbeck [Sat, 28 Dec 2019 22:11:09 +0000 (23:11 +0100)]
common: Add Rust glue for the ringbuf module.

For now this only allows us to access a ringbuffer from Rust
after it has been defined in C code.

4 years agocommon: Add the uart module.
Tilman Sauerbeck [Sat, 28 Dec 2019 18:54:46 +0000 (19:54 +0100)]
common: Add the uart module.

4 years agoapplication: Enable OSC0.
Tilman Sauerbeck [Mon, 30 Dec 2019 10:42:18 +0000 (11:42 +0100)]
application: Enable OSC0.

Needed for UART0.

4 years agocommon: Implement clock::enable_osc0().
Tilman Sauerbeck [Sat, 28 Dec 2019 18:49:02 +0000 (19:49 +0100)]
common: Implement clock::enable_osc0().

4 years agobuild: Use rustc to link the binaries instead of gcc.
Tilman Sauerbeck [Sun, 29 Dec 2019 11:55:24 +0000 (12:55 +0100)]
build: Use rustc to link the binaries instead of gcc.

This simplifies the build system by removing the need for
libapplication.a, libbootloader.a and the two start.c copies.

4 years agobootloader: Mark jump_to_application() as noreturn.
Tilman Sauerbeck [Sun, 29 Dec 2019 11:51:25 +0000 (12:51 +0100)]
bootloader: Mark jump_to_application() as noreturn.

4 years agobuild: Link libgcc from the command line instead of the linker script.
Tilman Sauerbeck [Sun, 29 Dec 2019 11:16:49 +0000 (12:16 +0100)]
build: Link libgcc from the command line instead of the linker script.

Pulling it in via the linker script will only work if we use our
C toolchain's linker and would fail if we used the Rust linker.

4 years agobuild: Don't link libraries we don't need.
Tilman Sauerbeck [Sun, 29 Dec 2019 09:56:06 +0000 (10:56 +0100)]
build: Don't link libraries we don't need.

4 years agoapplication: Initialize and clear the display on startup.
Tilman Sauerbeck [Fri, 20 Dec 2019 20:10:18 +0000 (21:10 +0100)]
application: Initialize and clear the display on startup.

4 years agoapplication: Set up pins for the display.
Tilman Sauerbeck [Fri, 20 Dec 2019 20:09:42 +0000 (21:09 +0100)]
application: Set up pins for the display.

This configures I2C0 as well as the GPIO used to control the display's
reset line.

4 years agocommon: Add the display module.
Tilman Sauerbeck [Wed, 18 Dec 2019 08:01:56 +0000 (09:01 +0100)]
common: Add the display module.

It currently can initialize, clear and draw the main area
of the display. Drawing or clearing the icon area is not yet
supported.

4 years agoapplication: Perform a system reset if PTA12 is pressed.
Tilman Sauerbeck [Wed, 18 Dec 2019 09:00:22 +0000 (10:00 +0100)]
application: Perform a system reset if PTA12 is pressed.

4 years agoapplication: Configure PTA12 for push button use.
Tilman Sauerbeck [Wed, 18 Dec 2019 08:59:12 +0000 (09:59 +0100)]
application: Configure PTA12 for push button use.

4 years agocommon: Implement nvic::system_reset().
Tilman Sauerbeck [Wed, 18 Dec 2019 07:46:46 +0000 (08:46 +0100)]
common: Implement nvic::system_reset().

Performs a system reset.

4 years agobootloader: Never auto-start the application in the intermediate bootloader.
Tilman Sauerbeck [Sun, 8 Dec 2019 17:20:04 +0000 (18:20 +0100)]
bootloader: Never auto-start the application in the intermediate bootloader.

Instead, we now always enter bootloader operation. I think this has
less potential of bricking a device in case you don't press PTE24
fast enough after installing the intermediate bootloader.

4 years agocommon: Add the i2c module.
Tilman Sauerbeck [Mon, 18 Nov 2019 06:38:24 +0000 (07:38 +0100)]
common: Add the i2c module.

4 years agobootloader: Call clock::reset() before jumping to the application.
Tilman Sauerbeck [Sun, 17 Nov 2019 20:42:01 +0000 (21:42 +0100)]
bootloader: Call clock::reset() before jumping to the application.

By switching back to FBE clock mode there, we can unconditionally
do the switches to FBE, PBE and PEE in any of our programs.

4 years agocommon: Implement clock::reset().
Tilman Sauerbeck [Sun, 17 Nov 2019 20:34:38 +0000 (21:34 +0100)]
common: Implement clock::reset().

This puts the MCG back into FBE mode.

4 years agocommon: Combine writes to SIM_CLKDIV1 in clock::configure_clkdiv().
Tilman Sauerbeck [Sat, 16 Nov 2019 20:54:50 +0000 (21:54 +0100)]
common: Combine writes to SIM_CLKDIV1 in clock::configure_clkdiv().

By setting both CLKDIV1 and CLKDIV4 at the same time we avoid
running the flash at twice the intended clock rate for a couple
of cycles which has been observed to make it read bad data.

4 years agobootloader: Disable the watchdog.
Tilman Sauerbeck [Sun, 17 Nov 2019 18:05:39 +0000 (19:05 +0100)]
bootloader: Disable the watchdog.

The watchdog gets enabled with a 1s timeout on POR, and I don't
want to deal with that.