Pre-commit: Fixed compilation error for other ESP32C3/ESP32S3/ESP32H2 boards
Review comment: Removed the self->pin NULL check
Review comment: Using raise_ValueError_invalid_pin when adc_index is not ADC_UNIT1 for ESP32
Review comment: Optimized the code to set data in buffer from DMA results
Fix: For ESP32C3 boards continuing collecting samples after channel mismatch as DMA runs in alternating UNIT mode
Fix: For ESP32S3 and ESP32H2 setting conversion mode to type2
This 2-in-1 PR started with the goal of support the Bangle.js 2
smartwatch with *no USB*.
* Adds "secure" DFU build support with a committed private key.
* Adds 3-bit color support with one dummy bit for the JDI memory display
* Allows nrf boards to have a board_background_task() run in RUN_BACKGROUND_TASK.
This is needed because the Bangle.js 2 uses the watchdog to reset.
* Renamed port_background_task() to port_background_tick() to indicate it
runs on tick, not RUN_BACKGROUND_TASK.
* Marks serial connected when the display terminal is inited. This means
that safe mode messages show up on the display.
ACep, 7-color epaper displays also pack 3 bits in 4. So, I added that
support as well.
* Adds 3-bit ACeP color support for 7-color e-paper displays. (Not
watch related but similar due to color depth.)
* Allows a refresh sequence instead of a single int command. The 7" ACeP
display requires a data byte for refresh.
* Adds optional delay after resetting the display. The ACeP displays
need this. (Probably to load LUTs from flash.)
* Adds a cleaning phase for ACeP displays before the real refresh.
For both:
* Add dither support to Palette.
* Palette no longer converts colors when set. Instead, it caches
converted colors at each index.
* ColorConverter now caches the last converted color. It should make
conversions faster for repeated colors (not dithering.)
I was having trouble flashing CircuitPython to the Seeed xiao
esp32c3 using the make flash option. With the help of DAN and
Neradoc I was able to perform a manual flash and use the make
flash option to flash an Adafruit_qtpy_esp32c3 bin but when I
went back and attempted to use make flash on the seeed bin it didn't
work. Comparing the builds, the flash mode was different and after
making this change the seeed build now flashes properly using make
flash.
