mirror of
https://github.com/espressif/esp-idf.git
synced 2025-11-03 22:08:28 +00:00
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// Internal header for calibration, don't use in app
|
|
|
|
#include "sdkconfig.h"
|
|
#include "esp_err.h"
|
|
#include "hal/adc_hal.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#if !CONFIG_IDF_TARGET_ESP32
|
|
|
|
/**
|
|
* @brief Calibrate the offset of ADC. (Based on the pre-stored efuse or actual calibration)
|
|
*
|
|
* @param adc_n ADC unit to calibrate
|
|
* @param channel Target channel if really do calibration
|
|
* @param atten Attenuation to use
|
|
* @return Always ESP_OK
|
|
*/
|
|
extern esp_err_t adc_cal_offset(adc_ll_num_t adc_n, adc_channel_t channel, adc_atten_t atten);
|
|
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|