This avoids an implusive change in base value and makes the waveform a
little more interesting.
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
The paths passed to the preprocessor are currently wrong. Fix them!
Fixes: 64afca1 ("Makefile: fix make sim (allow BOARD to be unset)")
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
The heart rate analysis step is still a work in progress but the current
app allows us to visualize the the results of the signal conditioning.
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
The original approach is *really* bad at drawing vertical lines (it ends
up working a pixel at a time and works the chip select for each one.
Optimize both the pixel fill and the use of the line buffer. The result
is 20% faster for quarter screen fills, 3x for horizontal lines and 6x
for vertical lines.
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
The preprocess to create watch.py was hard coded for PineTime so changed to $(BOARD)
This will be required for other watches like the P8
Signed-off-by: Steve Amor <steveamor@users.noreply.github.com>
We also change the colour scheme slightly because the increased size of
the clock interferes visually with the main display when it is bright
white.
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
There nothing in the docs to give the delay time required after a
reset. Currently we use 200ms because that appears on some older
code for BMA423 but is removed in more recent drivers. 50ms is still
a long time (for hardware) and has held up in testing.
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
Currently when the the bootloader is modified if fails to build because
the wildcard in the hex merge picks up both the old and new binaries.
Fix this by explicitly deleting the old one.
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
Currently there's no fancy algorithms to estimate stride length. Just
pure simple step counting directly from the hardware's "intelligence
engine".
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
The logo module is currently unused but it simply sits there consuming
flash. Let's shift it to the demo app to is can consume RAM instead (but
only when we upload the demo to the watch).
sx is measured in pixels (2-bytes) and len(display.linebuffer) gives
a value in bytes so the divisor isn't right.
Whilst we are here let's make sure we use integer division too.
Fixes: #18
