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driver(adc): esp32s2 support API adc2_vref_to_gpio

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fuzhibo
2020-06-03 17:38:10 +08:00
parent 934fe37c48
commit 885f8ce484
9 changed files with 180 additions and 78 deletions
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4
docs/en/api-reference/peripherals/adc.rst
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@@ -53,7 +53,7 @@ Then it is possible to read ADC conversion result with :cpp:func:`adc1_get_raw`
This API provides convenient way to configure ADC1 for reading from :doc:`ULP <../../api-guides/ulp>`. To do so, call function :cpp:func:`adc1_ulp_enable` and then set precision and attenuation as discussed above.
There is another specific function :cpp:func:`adc2_vref_to_gpio` used to route internal reference voltage to a GPIO pin. It comes handy to calibrate ADC reading and this is discussed in section :ref:`adc-api-adc-calibration`.
There is another specific function :cpp:func:`adc_vref_to_gpio` used to route internal reference voltage to a GPIO pin. It comes handy to calibrate ADC reading and this is discussed in section :ref:`adc-api-adc-calibration`.
.. todo::
@@ -228,7 +228,7 @@ Routing ADC reference voltage to GPIO, so it can be manually measured (for **Def
...
esp_err_t status = adc2_vref_to_gpio(GPIO_NUM_25);
esp_err_t status = adc_vref_to_gpio(ADC_UNIT_1, GPIO_NUM_25);
if (status == ESP_OK) {
printf("v_ref routed to GPIO\n");
} else {