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feat(driver/gpio): funtion to read pin-holders (IDFGH-14020) #14843

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feat(driver/gpio): funtion to read pin-holders (IDFGH-14020) #14843

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12 changes: 12 additions & 0 deletions components/esp_driver_gpio/include/driver/gpio.h
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Original file line number Diff line number Diff line change
Expand Up @@ -429,6 +429,18 @@ esp_err_t gpio_hold_en(gpio_num_t gpio_num);
*/
esp_err_t gpio_hold_dis(gpio_num_t gpio_num);

/**
* @brief Get gpio pad hold function.
*
* @param gpio_num GPIO number, only support output-capable GPIOs
* @param out pointer
*
* @return
* - ESP_OK Success
* - ESP_ERR_NOT_SUPPORTED Not support pad hold function
*/
esp_err_t gpio_hold_get(gpio_num_t gpio_num, bool * out);

#if SOC_GPIO_SUPPORT_HOLD_IO_IN_DSLP && !SOC_GPIO_SUPPORT_HOLD_SINGLE_IO_IN_DSLP
/**
* @brief Enable all digital gpio pads hold function during Deep-sleep.
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20 changes: 20 additions & 0 deletions components/esp_driver_gpio/src/gpio.c
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Original file line number Diff line number Diff line change
Expand Up @@ -753,6 +753,26 @@ esp_err_t gpio_hold_dis(gpio_num_t gpio_num)
return ret;
}

esp_err_t gpio_hold_get(gpio_num_t gpio_num, bool * out)
{
GPIO_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(gpio_num), "Only output-capable GPIO support this function", ESP_ERR_NOT_SUPPORTED);
int ret = ESP_OK;

if (rtc_gpio_is_valid_gpio(gpio_num)) {
#if SOC_RTCIO_HOLD_SUPPORTED
ret = ESP_ERR_NOT_SUPPORTED;
#endif
} else if (GPIO_HOLD_MASK[gpio_num]) {
portENTER_CRITICAL(&gpio_context.gpio_spinlock);
*out = gpio_hal_is_digital_io_hold(gpio_context.gpio_hal, gpio_num);
portEXIT_CRITICAL(&gpio_context.gpio_spinlock);
} else {
ret = ESP_ERR_NOT_SUPPORTED;
}

return ret;
}

#if SOC_GPIO_SUPPORT_HOLD_IO_IN_DSLP && !SOC_GPIO_SUPPORT_HOLD_SINGLE_IO_IN_DSLP
void gpio_deep_sleep_hold_en(void)
{
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