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feat(adc): added an API to flush the continuous driver pool

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Armando 2023-08-08 20:45:00 +08:00 committed by Armando (Dou Yiwen)
parent eb8883cc20
commit 73c9182581
2 changed files with 31 additions and 2 deletions
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17
components/esp_adc/adc_continuous.c
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@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2016-2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2016-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@ -613,6 +613,21 @@ esp_err_t adc_continuous_register_event_callbacks(adc_continuous_handle_t handle
return ESP_OK;
}
esp_err_t adc_continuous_flush_pool(adc_continuous_handle_t handle)
{
ESP_RETURN_ON_FALSE(handle, ESP_ERR_INVALID_ARG, ADC_TAG, "invalid argument");
ESP_RETURN_ON_FALSE(handle->fsm == ADC_FSM_INIT, ESP_ERR_INVALID_STATE, ADC_TAG, "ADC continuous mode isn't in the init state, it's started already");
size_t actual_size = 0;
uint8_t *old_data = NULL;
while ((old_data = xRingbufferReceiveUpTo(handle->ringbuf_hdl, &actual_size, 0, handle->ringbuf_size))) {
vRingbufferReturnItem(handle->ringbuf_hdl, old_data);
}
return ESP_OK;
}
esp_err_t adc_continuous_io_to_channel(int io_num, adc_unit_t * const unit_id, adc_channel_t * const channel)
{
return adc_io_to_channel(io_num, unit_id, channel);

16
components/esp_adc/include/esp_adc/adc_continuous.h
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@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@ -198,6 +198,20 @@ esp_err_t adc_continuous_stop(adc_continuous_handle_t handle);
*/
esp_err_t adc_continuous_deinit(adc_continuous_handle_t handle);
/**
* @brief Flush the driver internal pool
*
* @note This API is not supposed to be called in an ISR context
*
* @param[in] handle ADC continuous mode driver handle
*
* @return
* - ESP_ERR_INVALID_STATE Driver state is invalid, you should call this API when it's in init state
* - ESP_ERR_INVALID_ARG: Invalid arguments
* - ESP_OK On success
*/
esp_err_t adc_continuous_flush_pool(adc_continuous_handle_t handle);
/**
* @brief Get ADC channel from the given GPIO number
*