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driver: add notes about GPIO36/39 issue (ECO 3.11) workaround

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Closes IDFGH-1917
Closes https://github.com/espressif/esp-idf/issues/4117
This commit is contained in:
Ivan Grokhotkov
2020-01-07 09:48:07 +01:00
committed by Cao Sen Miao
parent 80e7252c13
commit d890a516a1
1 changed files with 3 additions and 1 deletions
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4
components/driver/include/driver/gpio.h
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@@ -95,9 +95,11 @@ esp_err_t gpio_set_intr_type(gpio_num_t gpio_num, gpio_int_type_t intr_type);
/**
* @brief Enable GPIO module interrupt signal
*
* @note Please do not use the interrupt of GPIO36 and GPIO39 when using ADC.
* @note Please do not use the interrupt of GPIO36 and GPIO39 when using ADC or Wi-Fi with sleep mode enabled.
* Please refer to the comments of `adc1_get_raw`.
* Please refer to section 3.11 of 'ECO_and_Workarounds_for_Bugs_in_ESP32' for the description of this issue.
* As a workaround, call adc_power_acquire() in the app. This will result in higher power consumption (by ~1mA),
* but will remove the glitches on GPIO36 and GPIO39.
*
* @param gpio_num GPIO number. If you want to enable an interrupt on e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
*