This enables optional support for the hardware UART to use the RTS and/or
CTS pins for flow control.
The new "flow" constructor keyword specifies a bitmask of RTS and/or CTS.
This matches the interface used by machine.UART on stm32 and rp2.
Previously on ESP32 it was possible to specify which pins to use for the
RTS and CTS signals, but hardware flow control was never functional: CTS
was not checked before transmitting bytes, and RTS was always driven high
(signalling no buffer space available). With this patch, CTS and RTS both
operate as expected.
This also includes an update to the machine.UART documentation.
Signed-off-by: Will Sowerbutts <will@sowerbutts.com>
The QR decoder has a single item that is 8908 bytes big and placed
on the stack. (struct datastream)
Without enlarging the stack, this will reliably crash.
* Removes VectorShape from user python interactions
* Re-integrates vectorio with displayio behind draw protocol implementations
* Implements draw protocol with VectorShape
* Composes VectorShape behaviors into Rectangle, Circle and Polygon
* Fixes terrible pixel garbage being left behind
* Improves redraw performance (heuristically) by tracking dirty area separately from current area.
Known Issues:
It does not work with transposed views.
Call `supervisor.disable_ble_workflow()` and the BLE workflow will
be disabled until the chip is reset.
This also includes a couple fixes:
1. Terminals can now be deinit by setting the tilegrid to NULL. This
prevents using the tilegrid before display is init.
2. Fix BLE serial send amount when sending more than a single packet.
Fixes#5049
A pointer to the FIL structure was kept after it went out of scope.
Apparently this happened to work until cf97793 added the `result`
variable that clobbered it.
Fixes#5062
This is a breaking change with previous palette semantic with respect to python code that uses vectorio.
Displayio has breaking changes in cpy 7 for Group's removal of max_size parameter so this is as good a
time as any to break everything.
Currently:
To color vectorio shapes correctly you have to pass in a palette with length 2. Palette[0] must be set transparent and palette[1] must be the color you want.
New:
To color vectorio shapes correctly you pass in a palette with length >= 1. Palette[0] will be the color of the shape.
Also improves pixels per second when skipping areas that aren't covered by the shape.
