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45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/*
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* SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <string.h>
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#include <sys/cdefs.h>
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#include "esp_types.h"
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#include "sdkconfig.h"
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#include "esp_err.h"
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#include "esp_log.h"
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#include "esp_check.h"
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#include "esp_heap_caps.h"
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#include "hal/adc_types.h"
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#include "esp_adc/adc_cali.h"
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#include "adc_cali_interface.h"
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const __attribute__((unused)) static char *TAG = "adc_cali";
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esp_err_t adc_cali_check_scheme(adc_cali_scheme_ver_t *scheme_mask)
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{
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ESP_RETURN_ON_FALSE(scheme_mask, ESP_ERR_INVALID_ARG, TAG, "invalid argument: null pointer");
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*scheme_mask = 0;
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#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2
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*scheme_mask |= ADC_CALI_SCHEME_VER_LINE_FITTING;
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#elif CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32S3
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*scheme_mask |= ADC_CALI_SCHEME_VER_CURVE_FITTING;
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#endif
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//Add your custom ADC calibration scheme here
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ESP_RETURN_ON_FALSE((*scheme_mask) != 0, ESP_ERR_NOT_SUPPORTED, TAG, "no supported calibration scheme yet");
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return ESP_OK;
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}
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esp_err_t adc_cali_raw_to_voltage(adc_cali_handle_t handle, int raw, int *voltage)
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{
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ESP_RETURN_ON_FALSE(handle && voltage, ESP_ERR_INVALID_ARG, TAG, "invalid argument: null pointer");
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ESP_RETURN_ON_FALSE(handle->ctx, ESP_ERR_INVALID_STATE, TAG, "no calibration scheme, create a scheme first");
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return handle->raw_to_voltage(handle->ctx, raw, voltage);
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}
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