This commit updates the ADC to use the new driver `esp_adc/adc_oneshot.h`.
There are several errata notes about not being able to change the bit-width
of the ADCs certain chips. The only chip that can switch resolution to a
lower one is the normal ESP32. ESP32 C2 and S3 are stuck at 12 bits, while
S2 is at 13 bits.
On the S2, you can change the resolution, but it has no effect on the
resolution, rather, it prevents attenuation from working at all!
The resolution is set to the maximum possible for each SoC, with the ESP32
being the only one not throwing errors when trying to set the bit-width to
9, 10, 11 or 12 bits using `ADC.width(bits)`.
Signed-off-by: Damian Nowacki (purewack) bobimaster15@gmail.com
This updates esp32 code where appropriate to replace ifdef's based on a
list of specific chips with a feature SOC_* definition. This should
simplify adding new esp32-* chips in future, deferring chip feature support
to the IDF.
Signed-off-by: Andrew Leech <andrew@alelec.net>
Replaces the deprecated ESP32 calibration API with the "line" method
instead.
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
This is a code factoring to have the Python bindings in one location, and
all the ports use those same bindings. At this stage only esp32 implements
this class, so the code for the bindings comes from that port.
The documentation is also updated to reflect the esp32's behaviour of
ADCBlock.connect().
Signed-off-by: Damien George <damien@micropython.org>
