In drawFace, majorLine could be left uninitialised if style was invalid
(although this couldn't happen with the current code).
Also cleaned up the WIDGETSTYLE tests.
(and fixed a few spelling errors in comments)
- Use fast pin change macros for RESET, SS and DC.
- Implement MVSPI.packetBegin() and MVSPI.packetEnd() to allow sending
multiple byte "packets" while SS remains enabled.
- Add 2 and 3 byte command() functions to send multiple command bytes in
one packet.
- Modify clear() and display() functions to send commands and data in
packets.
- Do the "wait for SPI transfer complete" just before sending the next
byte (plus after the last or only byte) in a packet, so code can be
executed while bytes are being sent.
- Disable SPI mode when not transmitting, so MOSI (and SCK) will go low.
- Keep DC low except when sending data bytes.
- Change MVSPI.transfer() to void since nothing can be received from
the display.
- Fixed use of = instead of == in "if" statment.
- Fixed uninitialised count variable in "for" loop.
- Removed unused variables.
- Replaced line splice characters (backslash) at end of comments.
- added defines to map ports and bits for RESET, DC and SS.
- added macros to quickly control RESET, DC and SS using
the internal weak pullup for high.
OK, this version is actually worth looking at. Previous had more bugs
than you could shake a stick at.
vert_slider_test.ino illustrates the two slider styles, vertical
versions of the two existing styles
Added WIDGETSTYLE2 (like 0, but vertical) and WIDGETSTYLE3 (like 1, but
vertical). NOTE: I don't have a build environment, so I can't even
promise this will compile! So if it's crap, just treat it as a concept
for an enhancement request!
* created MICROVIEWWIDGET class
* added routines to draw widget
* added slider widget
* merged MicroViewWidget into MicroView
* merged SPI.h into MicroView
