Updated MCU HAL to support other chips in the ESP32 family

[lonelycorn]

in this pull request, the MCU HALL to support other chips in the ESP32 family which have different capabilities than ESP32:

• not all of them support LEDC_HIGH_SPEED_MODE: PWM speed mode is additionally guarded by SOC_LEDC_SUPPORT_HS_MODE
• some has fixed ADC resolution (e.g. 12-bit): ADC is configured to run with max resolution, and the results are converted to 10-bit using bitshift

[Paciente8159]

Awesome job. Thanks.

Just one question regarding ADC. Wouldn't be preferable to simply set the ADC to ADC_WIDTH_BIT_12 and then bit-shift 2 bits? The SDK seems to indicate the higher bit-width ADC are available.

    ADC_WIDTH_BIT_9  = 0, /*!< ADC capture width is 9Bit. */
    ADC_WIDTH_BIT_10 = 1, /*!< ADC capture width is 10Bit. */
    ADC_WIDTH_BIT_11 = 2, /*!< ADC capture width is 11Bit. */
    ADC_WIDTH_BIT_12 = 3, /*!< ADC capture width is 12Bit. */
#elif SOC_ADC_MAX_BITWIDTH == 12
    ADC_WIDTH_BIT_12 = 3, /*!< ADC capture width is 12Bit. */
#elif SOC_ADC_MAX_BITWIDTH == 13
    ADC_WIDTH_BIT_13 = 4, /*!< ADC capture width is 13Bit. */
#endif
    ADC_WIDTH_MAX,

This is transversal to ESP32, ESP32C3, ESP32S2 and ESP32S3. They all seem to support the ADC_WIDTH_BIT_12 definition. Are newer variants that have other definitions?

[lonelycorn]

@Paciente8159 I was just getting started with ESP32 family and playing with a ESP32S3 dev board which only supports 12-bit ADC. I also read that "10bit ADC" is sort of a "breaking change" introduced in v1.8. So I decided to keep the output of mcu_get_analog() in the same range of [0, 4095] just in case.

I did not verify if ADC_WIDTH_BIT_12 was available on all current MCU's of this family. That said, the logic implemented in this PR should work regardless, which IMO is a bit more future-proof?

[Paciente8159]

Yes. I applied the same logic to attenuation too. Thanks