Commit graph

4 commits

Author SHA1 Message Date
krzychb
31eda99136 More detailed description of ADC API 2017-09-11 21:00:09 +02:00
Darian Leung
88b05f9391 esp_adc_cal: Added ADC calibration component
Added component containg API that is able to correct raw ADC readings
into a voltage in mV. Also provided a helper function that combines
the process of getting the raw ADC1 reading then converting it to a
voltage in mV. In doing so, the adc1_get_voltage() function of the ADC
driver has been deprecated. Instead there is now adc1_get_raw to obtain
the raw ADC1 reading, and adc1_to_voltage() that gets the raw reading
and converts all in one function. Functions using the deprecated
adc1_get_voltage() have also been updated to use adc1_get_raw().

Conversion is based on ADC characteristics. The characteristics are based
on the ADC's v_ref, herefore the appropriate structure and functions have
been provided to obtain the ADC characteristics.

The existing ADC driver has also been modified by adding a function to
route the internal ADC reference voltage to a GPIO allowing users to measure
it manually.

Relevant documentation has also been updated
2017-08-29 18:43:14 +08:00
krzychb
c0cd79c9a9 Changed adc GPIO pin 32, that is not broken out on header in ESP-WROVER-KIT, to 34 2017-07-18 21:11:22 +02:00
Chu Shu Chen
bab7a2df80 add adc1 example 2017-03-20 14:46:41 +08:00