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adc_i2s: solve the i2s_adc issue when using wifi

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This commit is contained in:
Cao Sen Miao
2020-12-03 13:58:24 +08:00
parent 24b910916a
commit 5490dbcaf7
7 changed files with 203 additions and 36 deletions
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24
components/driver/include/driver/adc.h
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@@ -228,14 +228,32 @@ int adc1_get_voltage(adc1_channel_t channel) __attribute__((deprecated));
/**
* @brief Enable ADC power
* @deprecated Use adc_power_acquire and adc_power_release instead.
*/
void adc_power_on();
void adc_power_on(void) __attribute__((deprecated));
/**
* @brief Power off SAR ADC
* This function will force power down for ADC
* @deprecated Use adc_power_acquire and adc_power_release instead.
* This function will force power down for ADC.
* This function is deprecated because forcing power ADC power off may
* disrupt operation of other components which may be using the ADC.
*/
void adc_power_off();
void adc_power_off(void) __attribute__((deprecated));
/**
* @brief Increment the usage counter for ADC module.
* ADC will stay powered on while the counter is greater than 0.
* Call adc_power_release when done using the ADC.
*/
void adc_power_acquire(void);
/**
* @brief Decrement the usage counter for ADC module.
* ADC will stay powered on while the counter is greater than 0.
* Call this function when done using the ADC.
*/
void adc_power_release(void);
/**
* @brief Initialize ADC pad

4
components/driver/include/driver/gpio.h
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@@ -276,9 +276,11 @@ 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);
*